fixed

videoarchiver/core/base.py

@@ -4,31 +4,68 @@ from __future__ import annotations
 
 import asyncio
 import logging
-from typing import Dict, Any, Optional
+from typing import Dict, Any, Optional, TypedDict, ClassVar, List, Set, Union
 from datetime import datetime
+from pathlib import Path
+
+import discord
 from redbot.core.bot import Red
-from redbot.core.commands import GroupCog
+from redbot.core.commands import GroupCog, Context
 
 from .settings import Settings
-from .lifecycle import LifecycleManager
+from .lifecycle import LifecycleManager, LifecycleState
 from .component_manager import ComponentManager, ComponentState
 from .error_handler import error_manager, handle_command_error
 from .response_handler import response_manager
-from .commands import setup_archiver_commands, setup_database_commands, setup_settings_commands
-from .events import setup_events
+from .commands.archiver_commands import setup_archiver_commands
+from .commands.database_commands import setup_database_commands
+from .commands.settings_commands import setup_settings_commands
+from .events import setup_events, EventManager
+
+from ..processor.core import Processor
+from ..queue.manager import QueueManager
+from ..ffmpeg.ffmpeg_manager import FFmpegManager
+from ..database.video_archive_db import VideoArchiveDB
+from ..config_manager import ConfigManager
+from ..utils.exceptions import (
+    CogError,
+    ErrorContext,
+    ErrorSeverity
+)
 
 logger = logging.getLogger("VideoArchiver")
 
-class CogStatus:
+class CogHealthCheck(TypedDict):
+    """Type definition for health check status"""
+    name: str
+    status: bool
+    last_check: str
+    details: Optional[Dict[str, Any]]
+
+class CogStatus(TypedDict):
+    """Type definition for cog status"""
+    uptime: float
+    last_error: Optional[str]
+    error_count: int
+    command_count: int
+    last_command: Optional[str]
+    health_checks: Dict[str, CogHealthCheck]
+    state: str
+    ready: bool
+
+class StatusTracker:
     """Tracks cog status and health"""
 
-    def __init__(self):
+    HEALTH_CHECK_INTERVAL: ClassVar[int] = 30  # Seconds between health checks
+    ERROR_THRESHOLD: ClassVar[int] = 100  # Maximum errors before health warning
+
+    def __init__(self) -> None:
         self.start_time = datetime.utcnow()
         self.last_error: Optional[str] = None
         self.error_count = 0
         self.command_count = 0
         self.last_command_time: Optional[datetime] = None
-        self.health_checks: Dict[str, bool] = {}
+        self.health_checks: Dict[str, CogHealthCheck] = {}
 
     def record_error(self, error: str) -> None:
         """Record an error occurrence"""
@@ -40,36 +77,70 @@ class CogStatus:
         self.command_count += 1
         self.last_command_time = datetime.utcnow()
 
-    def update_health_check(self, check: str, status: bool) -> None:
+    def update_health_check(
+        self,
+        name: str,
+        status: bool,
+        details: Optional[Dict[str, Any]] = None
+    ) -> None:
         """Update health check status"""
-        self.health_checks[check] = status
+        self.health_checks[name] = CogHealthCheck(
+            name=name,
+            status=status,
+            last_check=datetime.utcnow().isoformat(),
+            details=details
+        )
 
-    def get_status(self) -> Dict[str, Any]:
+    def get_status(self) -> CogStatus:
         """Get current status"""
-        return {
-            "uptime": (datetime.utcnow() - self.start_time).total_seconds(),
-            "last_error": self.last_error,
-            "error_count": self.error_count,
-            "command_count": self.command_count,
-            "last_command": self.last_command_time.isoformat() if self.last_command_time else None,
-            "health_checks": self.health_checks.copy()
-        }
+        return CogStatus(
+            uptime=(datetime.utcnow() - self.start_time).total_seconds(),
+            last_error=self.last_error,
+            error_count=self.error_count,
+            command_count=self.command_count,
+            last_command=self.last_command_time.isoformat() if self.last_command_time else None,
+            health_checks=self.health_checks.copy(),
+            state="healthy" if self.is_healthy() else "unhealthy",
+            ready=True
+        )
+
+    def is_healthy(self) -> bool:
+        """Check if cog is healthy"""
+        if self.error_count > self.ERROR_THRESHOLD:
+            return False
+        return all(check["status"] for check in self.health_checks.values())
 
 class ComponentAccessor:
     """Provides safe access to components"""
 
-    def __init__(self, component_manager: ComponentManager):
+    def __init__(self, component_manager: ComponentManager) -> None:
         self._component_manager = component_manager
 
     def get_component(self, name: str) -> Optional[Any]:
-        """Get a component with state validation"""
+        """
+        Get a component with state validation.
+        
+        Args:
+            name: Component name
+            
+        Returns:
+            Component instance if ready, None otherwise
+        """
         component = self._component_manager.get(name)
         if component and component.state == ComponentState.READY:
             return component
         return None
 
     def get_component_status(self, name: str) -> Dict[str, Any]:
-        """Get component status"""
+        """
+        Get component status.
+        
+        Args:
+            name: Component name
+            
+        Returns:
+            Component status dictionary
+        """
         return self._component_manager.get_component_status().get(name, {})
 
 class VideoArchiver(GroupCog, Settings):
@@ -85,7 +156,19 @@ class VideoArchiver(GroupCog, Settings):
         self.lifecycle_manager = LifecycleManager(self)
         self.component_manager = ComponentManager(self)
         self.component_accessor = ComponentAccessor(self.component_manager)
-        self.status = CogStatus()
+        self.status_tracker = StatusTracker()
+        self.event_manager: Optional[EventManager] = None
+
+        # Initialize task trackers
+        self._init_task: Optional[asyncio.Task] = None
+        self._cleanup_task: Optional[asyncio.Task] = None
+        self._queue_task: Optional[asyncio.Task] = None
+        self._health_tasks: Set[asyncio.Task] = set()
+        
+        # Initialize component storage
+        self.components: Dict[int, Dict[str, Any]] = {}
+        self.update_checker = None
+        self._db = None
 
         # Set up commands
         setup_archiver_commands(self)
@@ -93,42 +176,85 @@ class VideoArchiver(GroupCog, Settings):
         setup_settings_commands(self)
 
         # Set up events
-        setup_events(self)
+        self.event_manager = setup_events(self)
 
         # Register cleanup handlers
         self.lifecycle_manager.register_cleanup_handler(self._cleanup_handler)
 
     async def cog_load(self) -> None:
-        """Handle cog loading"""
+        """
+        Handle cog loading.
+        
+        Raises:
+            CogError: If loading fails
+        """
         try:
             await self.lifecycle_manager.handle_load()
             await self._start_health_monitoring()
         except Exception as e:
-            self.status.record_error(str(e))
-            raise
+            error = f"Failed to load cog: {str(e)}"
+            self.status_tracker.record_error(error)
+            logger.error(error, exc_info=True)
+            raise CogError(
+                error,
+                context=ErrorContext(
+                    "VideoArchiver",
+                    "cog_load",
+                    None,
+                    ErrorSeverity.CRITICAL
+                )
+            )
 
     async def cog_unload(self) -> None:
-        """Handle cog unloading"""
+        """
+        Handle cog unloading.
+        
+        Raises:
+            CogError: If unloading fails
+        """
         try:
+            # Cancel health monitoring
+            for task in self._health_tasks:
+                task.cancel()
+            self._health_tasks.clear()
+
             await self.lifecycle_manager.handle_unload()
         except Exception as e:
-            self.status.record_error(str(e))
-            raise
+            error = f"Failed to unload cog: {str(e)}"
+            self.status_tracker.record_error(error)
+            logger.error(error, exc_info=True)
+            raise CogError(
+                error,
+                context=ErrorContext(
+                    "VideoArchiver",
+                    "cog_unload",
+                    None,
+                    ErrorSeverity.CRITICAL
+                )
+            )
 
-    async def cog_command_error(self, ctx, error):
+    async def cog_command_error(
+        self,
+        ctx: Context,
+        error: Exception
+    ) -> None:
         """Handle command errors"""
-        self.status.record_error(str(error))
+        self.status_tracker.record_error(str(error))
         await handle_command_error(ctx, error)
 
-    async def cog_before_invoke(self, ctx) -> bool:
+    async def cog_before_invoke(self, ctx: Context) -> bool:
         """Pre-command hook"""
-        self.status.record_command()
+        self.status_tracker.record_command()
         return True
 
     async def _start_health_monitoring(self) -> None:
         """Start health monitoring tasks"""
-        asyncio.create_task(self._monitor_component_health())
-        asyncio.create_task(self._monitor_system_health())
+        self._health_tasks.add(
+            asyncio.create_task(self._monitor_component_health())
+        )
+        self._health_tasks.add(
+            asyncio.create_task(self._monitor_system_health())
+        )
 
     async def _monitor_component_health(self) -> None:
         """Monitor component health"""
@@ -136,98 +262,134 @@ class VideoArchiver(GroupCog, Settings):
             try:
                 component_status = self.component_manager.get_component_status()
                 for name, status in component_status.items():
-                    self.status.update_health_check(
+                    self.status_tracker.update_health_check(
                         f"component_{name}",
-                        status["state"] == ComponentState.READY.value
+                        status["state"] == ComponentState.READY.name,
+                        status
                     )
             except Exception as e:
-                logger.error(f"Error monitoring component health: {e}")
-            await asyncio.sleep(60)  # Check every minute
+                logger.error(f"Error monitoring component health: {e}", exc_info=True)
+            await asyncio.sleep(self.status_tracker.HEALTH_CHECK_INTERVAL)
 
     async def _monitor_system_health(self) -> None:
         """Monitor system health metrics"""
         while True:
             try:
                 # Check queue health
-                queue_manager = self.queue_manager
-                if queue_manager:
+                if queue_manager := self.queue_manager:
                     queue_status = await queue_manager.get_queue_status()
-                    self.status.update_health_check(
+                    self.status_tracker.update_health_check(
                         "queue_health",
-                        queue_status["active"] and not queue_status["stalled"]
+                        queue_status["active"] and not queue_status["stalled"],
+                        queue_status
                     )
 
                 # Check processor health
-                processor = self.processor
-                if processor:
+                if processor := self.processor:
                     processor_status = await processor.get_status()
-                    self.status.update_health_check(
+                    self.status_tracker.update_health_check(
                         "processor_health",
-                        processor_status["active"]
+                        processor_status["active"],
+                        processor_status
                     )
 
                 # Check database health
-                db = self.db
-                if db:
+                if db := self.db:
                     db_status = await db.get_status()
-                    self.status.update_health_check(
+                    self.status_tracker.update_health_check(
                         "database_health",
-                        db_status["connected"]
+                        db_status["connected"],
+                        db_status
+                    )
+
+                # Check event system health
+                if self.event_manager:
+                    event_stats = self.event_manager.get_stats()
+                    self.status_tracker.update_health_check(
+                        "event_health",
+                        event_stats["health"],
+                        event_stats
                     )
 
             except Exception as e:
-                logger.error(f"Error monitoring system health: {e}")
-            await asyncio.sleep(30)  # Check every 30 seconds
+                logger.error(f"Error monitoring system health: {e}", exc_info=True)
+            await asyncio.sleep(self.status_tracker.HEALTH_CHECK_INTERVAL)
 
     async def _cleanup_handler(self) -> None:
         """Custom cleanup handler"""
         try:
-            # Perform any custom cleanup
-            pass
+            # Cancel health monitoring tasks
+            for task in self._health_tasks:
+                if not task.done():
+                    task.cancel()
+                    try:
+                        await task
+                    except asyncio.CancelledError:
+                        pass
+            self._health_tasks.clear()
+
         except Exception as e:
-            logger.error(f"Error in cleanup handler: {e}")
+            logger.error(f"Error in cleanup handler: {e}", exc_info=True)
 
     def get_status(self) -> Dict[str, Any]:
-        """Get comprehensive cog status"""
+        """
+        Get comprehensive cog status.
+        
+        Returns:
+            Dictionary containing cog status information
+        """
         return {
-            "cog": self.status.get_status(),
+            "cog": self.status_tracker.get_status(),
             "lifecycle": self.lifecycle_manager.get_status(),
             "components": self.component_manager.get_component_status(),
-            "errors": error_manager.tracker.get_error_stats()
+            "errors": error_manager.tracker.get_error_stats(),
+            "events": self.event_manager.get_stats() if self.event_manager else None
         }
 
     # Component property accessors
     @property
-    def processor(self):
+    def processor(self) -> Optional[Processor]:
         """Get the processor component"""
         return self.component_accessor.get_component("processor")
 
     @property
-    def queue_manager(self):
+    def queue_manager(self) -> Optional[QueueManager]:
         """Get the queue manager component"""
         return self.component_accessor.get_component("queue_manager")
 
     @property
-    def config_manager(self):
+    def config_manager(self) -> Optional[ConfigManager]:
         """Get the config manager component"""
         return self.component_accessor.get_component("config_manager")
 
     @property
-    def ffmpeg_mgr(self):
+    def ffmpeg_mgr(self) -> Optional[FFmpegManager]:
         """Get the FFmpeg manager component"""
         return self.component_accessor.get_component("ffmpeg_mgr")
 
     @property
-    def db(self):
+    def db(self) -> Optional[VideoArchiveDB]:
         """Get the database component"""
-        return self.component_accessor.get_component("db")
+        return self._db
+
+    @db.setter
+    def db(self, value: VideoArchiveDB) -> None:
+        """Set the database component"""
+        self._db = value
 
     @property
-    def data_path(self):
+    def data_path(self) -> Optional[Path]:
         """Get the data path"""
         return self.component_accessor.get_component("data_path")
 
     @property
-    def download_path(self):
+    def download_path(self) -> Optional[Path]:
         """Get the download path"""
         return self.component_accessor.get_component("download_path")
+
+    @property
+    def queue_handler(self):
+        """Get the queue handler from processor"""
+        if processor := self.processor:
+            return processor.queue_handler
+        return None

videoarchiver/core/component_manager.py

@@ -2,33 +2,61 @@
 
 import logging
 import asyncio
-from typing import Dict, Any, Optional, Set, List
-from enum import Enum
+from typing import Dict, Any, Optional, Set, List, TypedDict, ClassVar, Type, Union, Protocol
+from enum import Enum, auto
 from datetime import datetime
+from pathlib import Path
+
+from ..utils.exceptions import (
+    ComponentError,
+    ErrorContext,
+    ErrorSeverity
+)
+from ..utils.path_manager import ensure_directory
 
 logger = logging.getLogger("VideoArchiver")
 
 class ComponentState(Enum):
     """Possible states of a component"""
-    UNREGISTERED = "unregistered"
-    REGISTERED = "registered"
-    INITIALIZING = "initializing"
-    READY = "ready"
-    ERROR = "error"
-    SHUTDOWN = "shutdown"
+    UNREGISTERED = auto()
+    REGISTERED = auto()
+    INITIALIZING = auto()
+    READY = auto()
+    ERROR = auto()
+    SHUTDOWN = auto()
 
-class ComponentDependencyError(Exception):
-    """Raised when component dependencies cannot be satisfied"""
-    pass
+class ComponentHistory(TypedDict):
+    """Type definition for component history entry"""
+    component: str
+    state: str
+    timestamp: str
+    error: Optional[str]
+    duration: float
 
-class ComponentLifecycleError(Exception):
-    """Raised when component lifecycle operations fail"""
-    pass
+class ComponentStatus(TypedDict):
+    """Type definition for component status"""
+    state: str
+    registration_time: Optional[str]
+    initialization_time: Optional[str]
+    dependencies: Set[str]
+    dependents: Set[str]
+    error: Optional[str]
+    health: bool
+
+class Initializable(Protocol):
+    """Protocol for initializable components"""
+    async def initialize(self) -> None:
+        """Initialize the component"""
+        ...
+
+    async def shutdown(self) -> None:
+        """Shutdown the component"""
+        ...
 
 class Component:
     """Base class for managed components"""
 
-    def __init__(self, name: str):
+    def __init__(self, name: str) -> None:
         self.name = name
         self.state = ComponentState.UNREGISTERED
         self.dependencies: Set[str] = set()
@@ -36,33 +64,74 @@ class Component:
         self.registration_time: Optional[datetime] = None
         self.initialization_time: Optional[datetime] = None
         self.error: Optional[str] = None
+        self._health_check_task: Optional[asyncio.Task] = None
 
     async def initialize(self) -> None:
-        """Initialize the component"""
+        """
+        Initialize the component.
+        
+        Raises:
+            ComponentError: If initialization fails
+        """
         pass
 
     async def shutdown(self) -> None:
-        """Shutdown the component"""
-        pass
+        """
+        Shutdown the component.
+        
+        Raises:
+            ComponentError: If shutdown fails
+        """
+        if self._health_check_task:
+            self._health_check_task.cancel()
+            try:
+                await self._health_check_task
+            except asyncio.CancelledError:
+                pass
+
+    def is_healthy(self) -> bool:
+        """Check if component is healthy"""
+        return self.state == ComponentState.READY and not self.error
 
 class ComponentTracker:
     """Tracks component states and relationships"""
 
-    def __init__(self):
-        self.states: Dict[str, ComponentState] = {}
-        self.history: List[Dict[str, Any]] = []
+    MAX_HISTORY: ClassVar[int] = 1000  # Maximum history entries to keep
 
-    def update_state(self, name: str, state: ComponentState, error: Optional[str] = None) -> None:
+    def __init__(self) -> None:
+        self.states: Dict[str, ComponentState] = {}
+        self.history: List[ComponentHistory] = []
+
+    def update_state(
+        self,
+        name: str,
+        state: ComponentState,
+        error: Optional[str] = None
+    ) -> None:
         """Update component state"""
         self.states[name] = state
-        self.history.append({
-            "component": name,
-            "state": state.value,
-            "timestamp": datetime.utcnow(),
-            "error": error
-        })
+        
+        # Add history entry
+        now = datetime.utcnow()
+        duration = 0.0
+        if self.history:
+            last_entry = self.history[-1]
+            last_time = datetime.fromisoformat(last_entry["timestamp"])
+            duration = (now - last_time).total_seconds()
 
-    def get_component_history(self, name: str) -> List[Dict[str, Any]]:
+        self.history.append(ComponentHistory(
+            component=name,
+            state=state.name,
+            timestamp=now.isoformat(),
+            error=error,
+            duration=duration
+        ))
+
+        # Cleanup old history
+        if len(self.history) > self.MAX_HISTORY:
+            self.history = self.history[-self.MAX_HISTORY:]
+
+    def get_component_history(self, name: str) -> List[ComponentHistory]:
         """Get state history for a component"""
         return [
             entry for entry in self.history
@@ -72,12 +141,33 @@ class ComponentTracker:
 class DependencyManager:
     """Manages component dependencies"""
 
-    def __init__(self):
+    def __init__(self) -> None:
         self.dependencies: Dict[str, Set[str]] = {}
         self.dependents: Dict[str, Set[str]] = {}
 
     def add_dependency(self, component: str, dependency: str) -> None:
-        """Add a dependency relationship"""
+        """
+        Add a dependency relationship.
+        
+        Args:
+            component: Component name
+            dependency: Dependency name
+            
+        Raises:
+            ComponentError: If dependency cycle is detected
+        """
+        # Check for cycles
+        if self._would_create_cycle(component, dependency):
+            raise ComponentError(
+                f"Dependency cycle detected: {component} -> {dependency}",
+                context=ErrorContext(
+                    "DependencyManager",
+                    "add_dependency",
+                    {"component": component, "dependency": dependency},
+                    ErrorSeverity.HIGH
+                )
+            )
+
         if component not in self.dependencies:
             self.dependencies[component] = set()
         self.dependencies[component].add(dependency)
@@ -86,6 +176,23 @@ class DependencyManager:
             self.dependents[dependency] = set()
         self.dependents[dependency].add(component)
 
+    def _would_create_cycle(self, component: str, dependency: str) -> bool:
+        """Check if adding dependency would create a cycle"""
+        visited = set()
+
+        def has_path(start: str, end: str) -> bool:
+            if start == end:
+                return True
+            if start in visited:
+                return False
+            visited.add(start)
+            return any(
+                has_path(dep, end)
+                for dep in self.dependencies.get(start, set())
+            )
+
+        return has_path(dependency, component)
+
     def get_dependencies(self, component: str) -> Set[str]:
         """Get dependencies for a component"""
         return self.dependencies.get(component, set())
@@ -95,27 +202,72 @@ class DependencyManager:
         return self.dependents.get(component, set())
 
     def get_initialization_order(self) -> List[str]:
-        """Get components in dependency order"""
-        visited = set()
-        order = []
+        """
+        Get components in dependency order.
+        
+        Returns:
+            List of component names in initialization order
+            
+        Raises:
+            ComponentError: If dependency cycle is detected
+        """
+        visited: Set[str] = set()
+        temp_visited: Set[str] = set()
+        order: List[str] = []
 
         def visit(component: str) -> None:
+            if component in temp_visited:
+                cycle = " -> ".join(
+                    name for name in self.dependencies
+                    if name in temp_visited
+                )
+                raise ComponentError(
+                    f"Dependency cycle detected: {cycle}",
+                    context=ErrorContext(
+                        "DependencyManager",
+                        "get_initialization_order",
+                        {"cycle": cycle},
+                        ErrorSeverity.HIGH
+                    )
+                )
             if component in visited:
                 return
-            visited.add(component)
+
+            temp_visited.add(component)
             for dep in self.dependencies.get(component, set()):
                 visit(dep)
+            temp_visited.remove(component)
+            visited.add(component)
             order.append(component)
 
-        for component in self.dependencies:
-            visit(component)
+        try:
+            for component in self.dependencies:
+                if component not in visited:
+                    visit(component)
+        except RecursionError:
+            raise ComponentError(
+                "Dependency resolution exceeded maximum recursion depth",
+                context=ErrorContext(
+                    "DependencyManager",
+                    "get_initialization_order",
+                    None,
+                    ErrorSeverity.HIGH
+                )
+            )
 
         return order
 
 class ComponentManager:
     """Manages VideoArchiver components"""
 
-    def __init__(self, cog):
+    CORE_COMPONENTS: ClassVar[Dict[str, Tuple[Type[Any], Set[str]]]] = {
+        "config_manager": ("..config_manager.ConfigManager", set()),
+        "processor": ("..processor.core.Processor", {"config_manager"}),
+        "queue_manager": ("..queue.manager.EnhancedVideoQueueManager", {"config_manager"}),
+        "ffmpeg_mgr": ("..ffmpeg.ffmpeg_manager.FFmpegManager", set())
+    }
+
+    def __init__(self, cog: Any) -> None:
         self.cog = cog
         self._components: Dict[str, Component] = {}
         self.tracker = ComponentTracker()
@@ -124,21 +276,41 @@ class ComponentManager:
     def register(
         self,
         name: str,
-        component: Any,
+        component: Union[Component, Any],
         dependencies: Optional[Set[str]] = None
     ) -> None:
-        """Register a component with dependencies"""
+        """
+        Register a component with dependencies.
+        
+        Args:
+            name: Component name
+            component: Component instance
+            dependencies: Optional set of dependency names
+            
+        Raises:
+            ComponentError: If registration fails
+        """
         try:
             # Wrap non-Component objects
             if not isinstance(component, Component):
-                component = Component(name)
+                wrapped = Component(name)
+                if isinstance(component, Initializable):
+                    wrapped.initialize = component.initialize
+                    wrapped.shutdown = component.shutdown
+                component = wrapped
 
             # Register dependencies
             if dependencies:
                 for dep in dependencies:
                     if dep not in self._components:
-                        raise ComponentDependencyError(
-                            f"Dependency {dep} not registered for {name}"
+                        raise ComponentError(
+                            f"Dependency {dep} not registered for {name}",
+                            context=ErrorContext(
+                                "ComponentManager",
+                                "register",
+                                {"component": name, "dependency": dep},
+                                ErrorSeverity.HIGH
+                            )
                         )
                     self.dependency_manager.add_dependency(name, dep)
 
@@ -149,19 +321,33 @@ class ComponentManager:
             logger.debug(f"Registered component: {name}")
 
         except Exception as e:
-            logger.error(f"Error registering component {name}: {e}")
+            error = f"Failed to register component {name}: {str(e)}"
+            logger.error(error, exc_info=True)
             self.tracker.update_state(name, ComponentState.ERROR, str(e))
-            raise ComponentLifecycleError(f"Failed to register component: {str(e)}")
+            raise ComponentError(
+                error,
+                context=ErrorContext(
+                    "ComponentManager",
+                    "register",
+                    {"component": name},
+                    ErrorSeverity.HIGH
+                )
+            )
 
     async def initialize_components(self) -> None:
-        """Initialize all components in dependency order"""
+        """
+        Initialize all components in dependency order.
+        
+        Raises:
+            ComponentError: If initialization fails
+        """
         try:
-            # Get initialization order
-            init_order = self.dependency_manager.get_initialization_order()
-            
             # Initialize core components first
             await self._initialize_core_components()
             
+            # Get initialization order
+            init_order = self.dependency_manager.get_initialization_order()
+            
             # Initialize remaining components
             for name in init_order:
                 if name not in self._components:
@@ -174,88 +360,172 @@ class ComponentManager:
                     component.initialization_time = datetime.utcnow()
                     self.tracker.update_state(name, ComponentState.READY)
                 except Exception as e:
-                    logger.error(f"Error initializing component {name}: {e}")
+                    error = f"Failed to initialize component {name}: {str(e)}"
+                    logger.error(error, exc_info=True)
                     self.tracker.update_state(name, ComponentState.ERROR, str(e))
-                    raise ComponentLifecycleError(
-                        f"Failed to initialize component {name}: {str(e)}"
+                    raise ComponentError(
+                        error,
+                        context=ErrorContext(
+                            "ComponentManager",
+                            "initialize_components",
+                            {"component": name},
+                            ErrorSeverity.HIGH
+                        )
                     )
 
         except Exception as e:
-            logger.error(f"Error during component initialization: {e}")
-            raise ComponentLifecycleError(f"Component initialization failed: {str(e)}")
+            error = f"Component initialization failed: {str(e)}"
+            logger.error(error, exc_info=True)
+            raise ComponentError(
+                error,
+                context=ErrorContext(
+                    "ComponentManager",
+                    "initialize_components",
+                    None,
+                    ErrorSeverity.HIGH
+                )
+            )
 
     async def _initialize_core_components(self) -> None:
-        """Initialize core system components"""
-        from ..config_manager import ConfigManager
-        from ..processor.core import Processor
-        from ..queue.manager import EnhancedVideoQueueManager
-        from ..ffmpeg.ffmpeg_manager import FFmpegManager
+        """
+        Initialize core system components.
+        
+        Raises:
+            ComponentError: If core component initialization fails
+        """
+        try:
+            for name, (component_path, deps) in self.CORE_COMPONENTS.items():
+                module_path, class_name = component_path.rsplit(".", 1)
+                module = __import__(module_path, fromlist=[class_name])
+                component_class = getattr(module, class_name)
+                
+                if name == "processor":
+                    component = component_class(self.cog)
+                elif name == "ffmpeg_mgr":
+                    component = component_class(self.cog)
+                else:
+                    component = component_class()
 
-        core_components = {
-            "config_manager": (ConfigManager(self.cog), set()),
-            "processor": (Processor(self.cog), {"config_manager"}),
-            "queue_manager": (EnhancedVideoQueueManager(), {"config_manager"}),
-            "ffmpeg_mgr": (FFmpegManager(self.cog), set())
-        }
+                self.register(name, component, deps)
 
-        for name, (component, deps) in core_components.items():
-            self.register(name, component, deps)
+            # Initialize paths
+            await self._initialize_paths()
 
-        # Initialize paths
-        await self._initialize_paths()
+        except Exception as e:
+            error = f"Failed to initialize core components: {str(e)}"
+            logger.error(error, exc_info=True)
+            raise ComponentError(
+                error,
+                context=ErrorContext(
+                    "ComponentManager",
+                    "_initialize_core_components",
+                    None,
+                    ErrorSeverity.HIGH
+                )
+            )
 
     async def _initialize_paths(self) -> None:
-        """Initialize required paths"""
-        from pathlib import Path
-        from ..utils.path_manager import ensure_directory
+        """
+        Initialize required paths.
+        
+        Raises:
+            ComponentError: If path initialization fails
+        """
+        try:
+            data_dir = Path(self.cog.bot.data_path) / "VideoArchiver"
+            download_dir = data_dir / "downloads"
 
-        data_dir = Path(self.cog.bot.data_path) / "VideoArchiver"
-        download_dir = data_dir / "downloads"
+            # Ensure directories exist
+            await ensure_directory(data_dir)
+            await ensure_directory(download_dir)
 
-        # Ensure directories exist
-        await ensure_directory(data_dir)
-        await ensure_directory(download_dir)
+            # Register paths
+            self.register("data_path", data_dir)
+            self.register("download_path", download_dir)
 
-        # Register paths
-        self.register("data_path", data_dir)
-        self.register("download_path", download_dir)
+        except Exception as e:
+            error = f"Failed to initialize paths: {str(e)}"
+            logger.error(error, exc_info=True)
+            raise ComponentError(
+                error,
+                context=ErrorContext(
+                    "ComponentManager",
+                    "_initialize_paths",
+                    None,
+                    ErrorSeverity.HIGH
+                )
+            )
 
-    def get(self, name: str) -> Optional[Any]:
+    def get(self, name: str) -> Optional[Component]:
         """Get a registered component"""
-        component = self._components.get(name)
-        return component if isinstance(component, Component) else None
+        return self._components.get(name)
 
     async def shutdown_components(self) -> None:
-        """Shutdown components in reverse dependency order"""
-        shutdown_order = reversed(self.dependency_manager.get_initialization_order())
+        """
+        Shutdown components in reverse dependency order.
         
-        for name in shutdown_order:
-            if name not in self._components:
-                continue
-                
-            component = self._components[name]
-            try:
-                await component.shutdown()
-                self.tracker.update_state(name, ComponentState.SHUTDOWN)
-            except Exception as e:
-                logger.error(f"Error shutting down component {name}: {e}")
-                self.tracker.update_state(name, ComponentState.ERROR, str(e))
+        Raises:
+            ComponentError: If shutdown fails
+        """
+        try:
+            shutdown_order = reversed(self.dependency_manager.get_initialization_order())
+            
+            for name in shutdown_order:
+                if name not in self._components:
+                    continue
+                    
+                component = self._components[name]
+                try:
+                    await component.shutdown()
+                    self.tracker.update_state(name, ComponentState.SHUTDOWN)
+                except Exception as e:
+                    error = f"Error shutting down component {name}: {str(e)}"
+                    logger.error(error, exc_info=True)
+                    self.tracker.update_state(name, ComponentState.ERROR, str(e))
+                    raise ComponentError(
+                        error,
+                        context=ErrorContext(
+                            "ComponentManager",
+                            "shutdown_components",
+                            {"component": name},
+                            ErrorSeverity.HIGH
+                        )
+                    )
+
+        except Exception as e:
+            error = f"Component shutdown failed: {str(e)}"
+            logger.error(error, exc_info=True)
+            raise ComponentError(
+                error,
+                context=ErrorContext(
+                    "ComponentManager",
+                    "shutdown_components",
+                    None,
+                    ErrorSeverity.HIGH
+                )
+            )
 
     def clear(self) -> None:
         """Clear all registered components"""
         self._components.clear()
         logger.debug("Cleared all components")
 
-    def get_component_status(self) -> Dict[str, Any]:
-        """Get status of all components"""
+    def get_component_status(self) -> Dict[str, ComponentStatus]:
+        """
+        Get status of all components.
+        
+        Returns:
+            Dictionary mapping component names to their status
+        """
         return {
-            name: {
-                "state": self.tracker.states.get(name, ComponentState.UNREGISTERED).value,
-                "registration_time": component.registration_time,
-                "initialization_time": component.initialization_time,
-                "dependencies": self.dependency_manager.get_dependencies(name),
-                "dependents": self.dependency_manager.get_dependents(name),
-                "error": component.error
-            }
+            name: ComponentStatus(
+                state=self.tracker.states.get(name, ComponentState.UNREGISTERED).name,
+                registration_time=component.registration_time.isoformat() if component.registration_time else None,
+                initialization_time=component.initialization_time.isoformat() if component.initialization_time else None,
+                dependencies=self.dependency_manager.get_dependencies(name),
+                dependents=self.dependency_manager.get_dependents(name),
+                error=component.error,
+                health=component.is_healthy()
+            )
             for name, component in self._components.items()
         }

videoarchiver/core/error_handler.py

@@ -2,7 +2,8 @@
 
 import logging
 import traceback
-from typing import Dict, Optional, Tuple, Type
+from typing import Dict, Optional, Tuple, Type, TypedDict, ClassVar
+from enum import Enum, auto
 import discord
 from redbot.core.commands import (
     Context,
@@ -13,98 +14,179 @@ from redbot.core.commands import (
     CommandError
 )
 
-from ..utils.exceptions import VideoArchiverError as ProcessingError, ConfigurationError as ConfigError
+from ..utils.exceptions import (
+    VideoArchiverError,
+    ErrorSeverity,
+    ErrorContext,
+    ProcessorError,
+    ValidationError,
+    DisplayError,
+    URLExtractionError,
+    MessageHandlerError,
+    QueueHandlerError,
+    QueueProcessorError,
+    FFmpegError,
+    DatabaseError,
+    HealthCheckError,
+    TrackingError,
+    NetworkError,
+    ResourceExhaustedError,
+    ConfigurationError
+)
 from .response_handler import response_manager
 
 logger = logging.getLogger("VideoArchiver")
 
+class ErrorCategory(Enum):
+    """Categories of errors"""
+    PERMISSION = auto()
+    ARGUMENT = auto()
+    CONFIGURATION = auto()
+    PROCESSING = auto()
+    NETWORK = auto()
+    RESOURCE = auto()
+    DATABASE = auto()
+    VALIDATION = auto()
+    QUEUE = auto()
+    CLEANUP = auto()
+    HEALTH = auto()
+    UNEXPECTED = auto()
+
+class ErrorStats(TypedDict):
+    """Type definition for error statistics"""
+    counts: Dict[str, int]
+    patterns: Dict[str, Dict[str, int]]
+    severities: Dict[str, Dict[str, int]]
+
 class ErrorFormatter:
     """Formats error messages for display"""
 
     @staticmethod
-    def format_permission_error(error: Exception) -> str:
-        """Format permission error messages"""
+    def format_error_message(error: Exception, context: Optional[ErrorContext] = None) -> str:
+        """Format error message with context"""
+        base_message = str(error)
+        if context:
+            return f"{context}: {base_message}"
+        return base_message
+
+    @staticmethod
+    def format_user_message(error: Exception, category: ErrorCategory) -> str:
+        """Format user-friendly error message"""
         if isinstance(error, MissingPermissions):
             return "You don't have permission to use this command."
         elif isinstance(error, BotMissingPermissions):
             return "I don't have the required permissions to do that."
-        return str(error)
-
-    @staticmethod
-    def format_argument_error(error: Exception) -> str:
-        """Format argument error messages"""
-        if isinstance(error, MissingRequiredArgument):
+        elif isinstance(error, MissingRequiredArgument):
             return f"Missing required argument: {error.param.name}"
         elif isinstance(error, BadArgument):
             return f"Invalid argument: {str(error)}"
+        elif isinstance(error, VideoArchiverError):
+            return str(error)
+        elif category == ErrorCategory.UNEXPECTED:
+            return "An unexpected error occurred. Please check the logs for details."
         return str(error)
 
-    @staticmethod
-    def format_processing_error(error: ProcessingError) -> str:
-        """Format processing error messages"""
-        return f"Processing error: {str(error)}"
-
-    @staticmethod
-    def format_config_error(error: ConfigError) -> str:
-        """Format configuration error messages"""
-        return f"Configuration error: {str(error)}"
-
-    @staticmethod
-    def format_unexpected_error(error: Exception) -> str:
-        """Format unexpected error messages"""
-        return "An unexpected error occurred. Check the logs for details."
-
 class ErrorCategorizer:
     """Categorizes errors and determines handling strategy"""
 
-    ERROR_TYPES = {
-        MissingPermissions: ("permission", "error"),
-        BotMissingPermissions: ("permission", "error"),
-        MissingRequiredArgument: ("argument", "warning"),
-        BadArgument: ("argument", "warning"),
-        ConfigError: ("configuration", "error"),
-        ProcessingError: ("processing", "error"),
+    ERROR_MAPPING: ClassVar[Dict[Type[Exception], Tuple[ErrorCategory, ErrorSeverity]]] = {
+        # Discord command errors
+        MissingPermissions: (ErrorCategory.PERMISSION, ErrorSeverity.MEDIUM),
+        BotMissingPermissions: (ErrorCategory.PERMISSION, ErrorSeverity.HIGH),
+        MissingRequiredArgument: (ErrorCategory.ARGUMENT, ErrorSeverity.LOW),
+        BadArgument: (ErrorCategory.ARGUMENT, ErrorSeverity.LOW),
+        
+        # VideoArchiver errors
+        ProcessorError: (ErrorCategory.PROCESSING, ErrorSeverity.HIGH),
+        ValidationError: (ErrorCategory.VALIDATION, ErrorSeverity.MEDIUM),
+        DisplayError: (ErrorCategory.PROCESSING, ErrorSeverity.LOW),
+        URLExtractionError: (ErrorCategory.PROCESSING, ErrorSeverity.MEDIUM),
+        MessageHandlerError: (ErrorCategory.PROCESSING, ErrorSeverity.MEDIUM),
+        QueueHandlerError: (ErrorCategory.QUEUE, ErrorSeverity.HIGH),
+        QueueProcessorError: (ErrorCategory.QUEUE, ErrorSeverity.HIGH),
+        FFmpegError: (ErrorCategory.PROCESSING, ErrorSeverity.HIGH),
+        DatabaseError: (ErrorCategory.DATABASE, ErrorSeverity.HIGH),
+        HealthCheckError: (ErrorCategory.HEALTH, ErrorSeverity.HIGH),
+        TrackingError: (ErrorCategory.PROCESSING, ErrorSeverity.MEDIUM),
+        NetworkError: (ErrorCategory.NETWORK, ErrorSeverity.MEDIUM),
+        ResourceExhaustedError: (ErrorCategory.RESOURCE, ErrorSeverity.HIGH),
+        ConfigurationError: (ErrorCategory.CONFIGURATION, ErrorSeverity.HIGH)
     }
 
     @classmethod
-    def categorize_error(cls, error: Exception) -> Tuple[str, str]:
-        """Categorize an error and determine its severity
-        
-        Returns:
-            Tuple[str, str]: (Error category, Severity level)
+    def categorize_error(cls, error: Exception) -> Tuple[ErrorCategory, ErrorSeverity]:
         """
-        for error_type, (category, severity) in cls.ERROR_TYPES.items():
+        Categorize an error and determine its severity.
+        
+        Args:
+            error: Exception to categorize
+            
+        Returns:
+            Tuple of (Error category, Severity level)
+        """
+        for error_type, (category, severity) in cls.ERROR_MAPPING.items():
             if isinstance(error, error_type):
                 return category, severity
-        return "unexpected", "error"
+        return ErrorCategory.UNEXPECTED, ErrorSeverity.HIGH
 
 class ErrorTracker:
     """Tracks error occurrences and patterns"""
 
-    def __init__(self):
+    def __init__(self) -> None:
         self.error_counts: Dict[str, int] = {}
         self.error_patterns: Dict[str, Dict[str, int]] = {}
+        self.error_severities: Dict[str, Dict[str, int]] = {}
 
-    def track_error(self, error: Exception, category: str) -> None:
-        """Track an error occurrence"""
+    def track_error(
+        self,
+        error: Exception,
+        category: ErrorCategory,
+        severity: ErrorSeverity
+    ) -> None:
+        """
+        Track an error occurrence.
+        
+        Args:
+            error: Exception that occurred
+            category: Error category
+            severity: Error severity
+        """
         error_type = type(error).__name__
+        
+        # Track error counts
         self.error_counts[error_type] = self.error_counts.get(error_type, 0) + 1
         
-        if category not in self.error_patterns:
-            self.error_patterns[category] = {}
-        self.error_patterns[category][error_type] = self.error_patterns[category].get(error_type, 0) + 1
+        # Track error patterns by category
+        if category.value not in self.error_patterns:
+            self.error_patterns[category.value] = {}
+        self.error_patterns[category.value][error_type] = (
+            self.error_patterns[category.value].get(error_type, 0) + 1
+        )
+        
+        # Track error severities
+        if severity.value not in self.error_severities:
+            self.error_severities[severity.value] = {}
+        self.error_severities[severity.value][error_type] = (
+            self.error_severities[severity.value].get(error_type, 0) + 1
+        )
 
-    def get_error_stats(self) -> Dict:
-        """Get error statistics"""
-        return {
-            "counts": self.error_counts.copy(),
-            "patterns": self.error_patterns.copy()
-        }
+    def get_error_stats(self) -> ErrorStats:
+        """
+        Get error statistics.
+        
+        Returns:
+            Dictionary containing error statistics
+        """
+        return ErrorStats(
+            counts=self.error_counts.copy(),
+            patterns=self.error_patterns.copy(),
+            severities=self.error_severities.copy()
+        )
 
 class ErrorManager:
     """Manages error handling and reporting"""
 
-    def __init__(self):
+    def __init__(self) -> None:
         self.formatter = ErrorFormatter()
         self.categorizer = ErrorCategorizer()
         self.tracker = ErrorTracker()
@@ -114,7 +196,8 @@ class ErrorManager:
         ctx: Context,
         error: Exception
     ) -> None:
-        """Handle a command error
+        """
+        Handle a command error.
         
         Args:
             ctx: Command context
@@ -124,24 +207,40 @@ class ErrorManager:
             # Categorize error
             category, severity = self.categorizer.categorize_error(error)
             
-            # Track error
-            self.tracker.track_error(error, category)
+            # Create error context
+            context = ErrorContext(
+                component=ctx.command.qualified_name if ctx.command else "unknown",
+                operation="command_execution",
+                details={
+                    "guild_id": str(ctx.guild.id) if ctx.guild else "DM",
+                    "channel_id": str(ctx.channel.id),
+                    "user_id": str(ctx.author.id)
+                },
+                severity=severity
+            )
             
-            # Format error message
-            error_msg = await self._format_error_message(error, category)
+            # Track error
+            self.tracker.track_error(error, category, severity)
+            
+            # Format error messages
+            log_message = self.formatter.format_error_message(error, context)
+            user_message = self.formatter.format_user_message(error, category)
             
             # Log error details
-            self._log_error(ctx, error, category, severity)
+            self._log_error(log_message, severity)
             
             # Send response
             await response_manager.send_response(
                 ctx,
-                content=error_msg,
-                response_type=severity
+                content=user_message,
+                response_type=severity.name.lower()
             )
 
         except Exception as e:
-            logger.error(f"Error handling command error: {str(e)}")
+            logger.error(
+                f"Error handling command error: {str(e)}\n"
+                f"Original error: {traceback.format_exc()}"
+            )
             try:
                 await response_manager.send_response(
                     ctx,
@@ -151,46 +250,25 @@ class ErrorManager:
             except Exception:
                 pass
 
-    async def _format_error_message(
-        self,
-        error: Exception,
-        category: str
-    ) -> str:
-        """Format error message based on category"""
-        try:
-            if category == "permission":
-                return self.formatter.format_permission_error(error)
-            elif category == "argument":
-                return self.formatter.format_argument_error(error)
-            elif category == "processing":
-                return self.formatter.format_processing_error(error)
-            elif category == "configuration":
-                return self.formatter.format_config_error(error)
-            else:
-                return self.formatter.format_unexpected_error(error)
-        except Exception as e:
-            logger.error(f"Error formatting error message: {e}")
-            return "An error occurred. Please check the logs."
-
     def _log_error(
         self,
-        ctx: Context,
-        error: Exception,
-        category: str,
-        severity: str
+        message: str,
+        severity: ErrorSeverity
     ) -> None:
-        """Log error details"""
+        """
+        Log error details.
+        
+        Args:
+            message: Error message to log
+            severity: Error severity
+        """
         try:
-            if severity == "error":
-                logger.error(
-                    f"Command error in {ctx.command} (Category: {category}):\n"
-                    f"{traceback.format_exc()}"
-                )
+            if severity in (ErrorSeverity.HIGH, ErrorSeverity.CRITICAL):
+                logger.error(f"{message}\n{traceback.format_exc()}")
+            elif severity == ErrorSeverity.MEDIUM:
+                logger.warning(message)
             else:
-                logger.warning(
-                    f"Command warning in {ctx.command} (Category: {category}):\n"
-                    f"{str(error)}"
-                )
+                logger.info(message)
         except Exception as e:
             logger.error(f"Error logging error details: {e}")
 
@@ -198,5 +276,11 @@ class ErrorManager:
 error_manager = ErrorManager()
 
 async def handle_command_error(ctx: Context, error: Exception) -> None:
-    """Helper function to handle command errors using the error manager"""
+    """
+    Helper function to handle command errors using the error manager.
+    
+    Args:
+        ctx: Command context
+        error: Exception to handle
+    """
     await error_manager.handle_error(ctx, error)

videoarchiver/core/events.py

@@ -1,59 +1,147 @@
 """Event handlers for VideoArchiver"""
 
-import logging
-import discord
 import asyncio
+import logging
 import traceback
-from typing import TYPE_CHECKING, Dict, Any, Optional
 from datetime import datetime
+from enum import Enum, auto
+from typing import TYPE_CHECKING, Dict, Any, Optional, TypedDict, ClassVar, List
+
+import discord
 
 from ..processor.constants import REACTIONS
 from ..processor.reactions import handle_archived_reaction
 from .guild import initialize_guild_components, cleanup_guild_components
 from .error_handler import error_manager
 from .response_handler import response_manager
+from ..utils.exceptions import EventError, ErrorContext, ErrorSeverity
 
 if TYPE_CHECKING:
     from .base import VideoArchiver
 
 logger = logging.getLogger("VideoArchiver")
 
+
+class EventType(Enum):
+    """Types of Discord events"""
+    GUILD_JOIN = auto()
+    GUILD_REMOVE = auto()
+    MESSAGE = auto()
+    REACTION_ADD = auto()
+    MESSAGE_PROCESSING = auto()
+    REACTION_PROCESSING = auto()
+
+
+class EventStats(TypedDict):
+    """Type definition for event statistics"""
+    counts: Dict[str, int]
+    last_events: Dict[str, str]
+    errors: Dict[str, int]
+    error_rate: float
+    health: bool
+
+
+class EventHistory(TypedDict):
+    """Type definition for event history entry"""
+    event_type: str
+    timestamp: str
+    guild_id: Optional[int]
+    channel_id: Optional[int]
+    message_id: Optional[int]
+    user_id: Optional[int]
+    error: Optional[str]
+    duration: float
+
+
 class EventTracker:
     """Tracks event occurrences and patterns"""
 
-    def __init__(self):
+    MAX_HISTORY: ClassVar[int] = 1000  # Maximum history entries to keep
+    ERROR_THRESHOLD: ClassVar[float] = 0.1  # 10% error rate threshold
+
+    def __init__(self) -> None:
         self.event_counts: Dict[str, int] = {}
         self.last_events: Dict[str, datetime] = {}
         self.error_counts: Dict[str, int] = {}
+        self.history: List[EventHistory] = []
 
-    def record_event(self, event_type: str) -> None:
+    def record_event(
+        self,
+        event_type: EventType,
+        guild_id: Optional[int] = None,
+        channel_id: Optional[int] = None,
+        message_id: Optional[int] = None,
+        user_id: Optional[int] = None,
+    ) -> None:
         """Record an event occurrence"""
-        self.event_counts[event_type] = self.event_counts.get(event_type, 0) + 1
-        self.last_events[event_type] = datetime.utcnow()
+        event_name = event_type.name
+        self.event_counts[event_name] = self.event_counts.get(event_name, 0) + 1
+        self.last_events[event_name] = datetime.utcnow()
 
-    def record_error(self, event_type: str) -> None:
+        # Add to history
+        self.history.append(
+            EventHistory(
+                event_type=event_name,
+                timestamp=datetime.utcnow().isoformat(),
+                guild_id=guild_id,
+                channel_id=channel_id,
+                message_id=message_id,
+                user_id=user_id,
+                error=None,
+                duration=0.0,
+            )
+        )
+
+        # Cleanup old history
+        if len(self.history) > self.MAX_HISTORY:
+            self.history = self.history[-self.MAX_HISTORY:]
+
+    def record_error(
+        self, event_type: EventType, error: str, duration: float = 0.0
+    ) -> None:
         """Record an event error"""
-        self.error_counts[event_type] = self.error_counts.get(event_type, 0) + 1
+        event_name = event_type.name
+        self.error_counts[event_name] = self.error_counts.get(event_name, 0) + 1
 
-    def get_stats(self) -> Dict[str, Any]:
+        # Update last history entry with error
+        if self.history:
+            self.history[-1].update({"error": error, "duration": duration})
+
+    def get_stats(self) -> EventStats:
         """Get event statistics"""
-        return {
-            "counts": self.event_counts.copy(),
-            "last_events": {k: v.isoformat() for k, v in self.last_events.items()},
-            "errors": self.error_counts.copy()
-        }
+        total_events = sum(self.event_counts.values())
+        total_errors = sum(self.error_counts.values())
+        error_rate = total_errors / total_events if total_events > 0 else 0.0
+
+        return EventStats(
+            counts=self.event_counts.copy(),
+            last_events={k: v.isoformat() for k, v in self.last_events.items()},
+            errors=self.error_counts.copy(),
+            error_rate=error_rate,
+            health=error_rate < self.ERROR_THRESHOLD,
+        )
+
 
 class GuildEventHandler:
     """Handles guild-related events"""
 
-    def __init__(self, cog: "VideoArchiver", tracker: EventTracker):
+    def __init__(self, cog: "VideoArchiver", tracker: EventTracker) -> None:
         self.cog = cog
         self.tracker = tracker
 
     async def handle_guild_join(self, guild: discord.Guild) -> None:
-        """Handle bot joining a new guild"""
-        self.tracker.record_event("guild_join")
-        
+        """
+        Handle bot joining a new guild.
+
+        Args:
+            guild: Discord guild that was joined
+
+        Raises:
+            EventError: If guild initialization fails
+        """
+        start_time = datetime.utcnow()
+        self.tracker.record_event(EventType.GUILD_JOIN, guild_id=guild.id)
+
         if not self.cog.ready.is_set():
             return
 
@@ -61,29 +149,72 @@ class GuildEventHandler:
             await initialize_guild_components(self.cog, guild.id)
             logger.info(f"Initialized components for new guild {guild.id}")
         except Exception as e:
-            self.tracker.record_error("guild_join")
-            logger.error(f"Failed to initialize new guild {guild.id}: {str(e)}")
+            duration = (datetime.utcnow() - start_time).total_seconds()
+            self.tracker.record_error(EventType.GUILD_JOIN, str(e), duration)
+            error = f"Failed to initialize new guild {guild.id}: {str(e)}"
+            logger.error(error, exc_info=True)
+            raise EventError(
+                error,
+                context=ErrorContext(
+                    "GuildEventHandler",
+                    "handle_guild_join",
+                    {"guild_id": guild.id},
+                    ErrorSeverity.HIGH,
+                ),
+            )
 
     async def handle_guild_remove(self, guild: discord.Guild) -> None:
-        """Handle bot leaving a guild"""
-        self.tracker.record_event("guild_remove")
-        
+        """
+        Handle bot leaving a guild.
+
+        Args:
+            guild: Discord guild that was left
+
+        Raises:
+            EventError: If guild cleanup fails
+        """
+        start_time = datetime.utcnow()
+        self.tracker.record_event(EventType.GUILD_REMOVE, guild_id=guild.id)
+
         try:
             await cleanup_guild_components(self.cog, guild.id)
         except Exception as e:
-            self.tracker.record_error("guild_remove")
-            logger.error(f"Error cleaning up removed guild {guild.id}: {str(e)}")
+            duration = (datetime.utcnow() - start_time).total_seconds()
+            self.tracker.record_error(EventType.GUILD_REMOVE, str(e), duration)
+            error = f"Error cleaning up removed guild {guild.id}: {str(e)}"
+            logger.error(error, exc_info=True)
+            raise EventError(
+                error,
+                context=ErrorContext(
+                    "GuildEventHandler",
+                    "handle_guild_remove",
+                    {"guild_id": guild.id},
+                    ErrorSeverity.HIGH,
+                ),
+            )
+
 
 class MessageEventHandler:
     """Handles message-related events"""
 
-    def __init__(self, cog: "VideoArchiver", tracker: EventTracker):
+    def __init__(self, cog: "VideoArchiver", tracker: EventTracker) -> None:
         self.cog = cog
         self.tracker = tracker
 
     async def handle_message(self, message: discord.Message) -> None:
-        """Handle new messages for video processing"""
-        self.tracker.record_event("message")
+        """
+        Handle new messages for video processing.
+
+        Args:
+            message: Discord message to process
+        """
+        self.tracker.record_event(
+            EventType.MESSAGE,
+            guild_id=message.guild.id if message.guild else None,
+            channel_id=message.channel.id,
+            message_id=message.id,
+            user_id=message.author.id,
+        )
 
         # Skip if not ready or if message is from DM/bot
         if not self.cog.ready.is_set() or message.guild is None or message.author.bot:
@@ -99,21 +230,19 @@ class MessageEventHandler:
 
     async def _process_message_background(self, message: discord.Message) -> None:
         """Process message in background to avoid blocking"""
+        start_time = datetime.utcnow()
         try:
             await self.cog.processor.process_message(message)
         except Exception as e:
-            self.tracker.record_error("message_processing")
+            duration = (datetime.utcnow() - start_time).total_seconds()
+            self.tracker.record_error(EventType.MESSAGE_PROCESSING, str(e), duration)
             await self._handle_processing_error(message, e)
 
     async def _handle_processing_error(
-        self,
-        message: discord.Message,
-        error: Exception
+        self, message: discord.Message, error: Exception
     ) -> None:
         """Handle message processing errors"""
-        logger.error(
-            f"Error processing message {message.id}: {traceback.format_exc()}"
-        )
+        logger.error(f"Error processing message {message.id}: {traceback.format_exc()}")
         try:
             log_channel = await self.cog.config_manager.get_channel(
                 message.guild, "log"
@@ -126,24 +255,35 @@ class MessageEventHandler:
                         f"Message ID: {message.id}\n"
                         f"Channel: {message.channel.mention}"
                     ),
-                    response_type="error"
+                    response_type=ErrorSeverity.HIGH,
                 )
         except Exception as log_error:
             logger.error(f"Failed to log error to guild: {str(log_error)}")
 
+
 class ReactionEventHandler:
     """Handles reaction-related events"""
 
-    def __init__(self, cog: "VideoArchiver", tracker: EventTracker):
+    def __init__(self, cog: "VideoArchiver", tracker: EventTracker) -> None:
         self.cog = cog
         self.tracker = tracker
 
     async def handle_reaction_add(
-        self,
-        payload: discord.RawReactionActionEvent
+        self, payload: discord.RawReactionActionEvent
     ) -> None:
-        """Handle reactions to messages"""
-        self.tracker.record_event("reaction_add")
+        """
+        Handle reactions to messages.
+
+        Args:
+            payload: Reaction event payload
+        """
+        self.tracker.record_event(
+            EventType.REACTION_ADD,
+            guild_id=payload.guild_id,
+            channel_id=payload.channel_id,
+            message_id=payload.message_id,
+            user_id=payload.user_id,
+        )
 
         if payload.user_id == self.cog.bot.user.id:
             return
@@ -151,47 +291,80 @@ class ReactionEventHandler:
         try:
             await self._process_reaction(payload)
         except Exception as e:
-            self.tracker.record_error("reaction_processing")
-            logger.error(f"Error handling reaction: {e}")
+            self.tracker.record_error(EventType.REACTION_PROCESSING, str(e))
+            logger.error(f"Error handling reaction: {e}", exc_info=True)
 
-    async def _process_reaction(
-        self,
-        payload: discord.RawReactionActionEvent
-    ) -> None:
-        """Process a reaction event"""
-        # Get the channel and message
-        channel = self.cog.bot.get_channel(payload.channel_id)
-        if not channel:
-            return
-            
-        message = await channel.fetch_message(payload.message_id)
-        if not message:
-            return
+    async def _process_reaction(self, payload: discord.RawReactionActionEvent) -> None:
+        """
+        Process a reaction event.
+
+        Args:
+            payload: Reaction event payload
+
+        Raises:
+            EventError: If reaction processing fails
+        """
+        try:
+            # Get the channel and message
+            channel = self.cog.bot.get_channel(payload.channel_id)
+            if not channel:
+                return
+
+            message = await channel.fetch_message(payload.message_id)
+            if not message:
+                return
+
+            # Check if it's the archived reaction
+            if str(payload.emoji) == REACTIONS["archived"]:
+                # Only process if database is enabled
+                if self.cog.db:
+                    user = self.cog.bot.get_user(payload.user_id)
+                    asyncio.create_task(
+                        handle_archived_reaction(message, user, self.cog.db)
+                    )
+
+        except Exception as e:
+            error = f"Failed to process reaction: {str(e)}"
+            logger.error(error, exc_info=True)
+            raise EventError(
+                error,
+                context=ErrorContext(
+                    "ReactionEventHandler",
+                    "_process_reaction",
+                    {
+                        "message_id": payload.message_id,
+                        "user_id": payload.user_id,
+                        "emoji": str(payload.emoji),
+                    },
+                    ErrorSeverity.MEDIUM,
+                ),
+            )
 
-        # Check if it's the archived reaction
-        if str(payload.emoji) == REACTIONS["archived"]:
-            # Only process if database is enabled
-            if self.cog.db:
-                user = self.cog.bot.get_user(payload.user_id)
-                asyncio.create_task(
-                    handle_archived_reaction(message, user, self.cog.db)
-                )
 
 class EventManager:
     """Manages Discord event handling"""
 
-    def __init__(self, cog: "VideoArchiver"):
+    def __init__(self, cog: "VideoArchiver") -> None:
         self.tracker = EventTracker()
         self.guild_handler = GuildEventHandler(cog, self.tracker)
         self.message_handler = MessageEventHandler(cog, self.tracker)
         self.reaction_handler = ReactionEventHandler(cog, self.tracker)
 
-    def get_stats(self) -> Dict[str, Any]:
+    def get_stats(self) -> EventStats:
         """Get event statistics"""
         return self.tracker.get_stats()
 
-def setup_events(cog: "VideoArchiver") -> None:
-    """Set up event handlers for the cog"""
+
+def setup_events(cog: "VideoArchiver") -> EventManager:
+    """
+    Set up event handlers for the cog.
+
+    Args:
+        cog: VideoArchiver cog instance
+
+    Returns:
+        Configured EventManager instance
+    """
     event_manager = EventManager(cog)
 
     @cog.listener()
@@ -209,3 +382,5 @@ def setup_events(cog: "VideoArchiver") -> None:
     @cog.listener()
     async def on_raw_reaction_add(payload: discord.RawReactionActionEvent) -> None:
         await event_manager.reaction_handler.handle_reaction_add(payload)
+
+    return event_manager

videoarchiver/core/initialization.py

@@ -1,16 +1,102 @@
 """Module for handling VideoArchiver initialization"""
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, Optional, Dict, Any
 import asyncio
+import logging
+
+from ..utils.exceptions import (
+    ComponentError,
+    ErrorContext,
+    ErrorSeverity
+)
+from .lifecycle import LifecycleState
 
 if TYPE_CHECKING:
     from .base import VideoArchiver
 
-# Re-export initialization functions from lifecycle
+logger = logging.getLogger("VideoArchiver")
+
 async def initialize_cog(cog: "VideoArchiver") -> None:
-    """Initialize all components with proper error handling"""
-    await cog.lifecycle_manager.initialize_cog()
+    """
+    Initialize all components with proper error handling.
+    
+    This is a re-export of lifecycle_manager.initialize_cog with additional
+    error context and logging.
+    
+    Args:
+        cog: VideoArchiver cog instance
+        
+    Raises:
+        ComponentError: If initialization fails
+    """
+    try:
+        logger.info("Starting cog initialization...")
+        await cog.lifecycle_manager.initialize_cog()
+        logger.info("Cog initialization completed successfully")
+    except Exception as e:
+        error = f"Failed to initialize cog: {str(e)}"
+        logger.error(error, exc_info=True)
+        raise ComponentError(
+            error,
+            context=ErrorContext(
+                "Initialization",
+                "initialize_cog",
+                {"state": cog.lifecycle_manager.state_tracker.state.name},
+                ErrorSeverity.HIGH
+            )
+        )
 
 def init_callback(cog: "VideoArchiver", task: asyncio.Task) -> None:
-    """Handle initialization task completion"""
-    cog.lifecycle_manager.init_callback(task)
+    """
+    Handle initialization task completion.
+    
+    This is a re-export of lifecycle_manager.init_callback with additional
+    error context and logging.
+    
+    Args:
+        cog: VideoArchiver cog instance
+        task: Initialization task
+    """
+    try:
+        logger.debug("Processing initialization task completion...")
+        cog.lifecycle_manager.init_callback(task)
+        
+        # Log final state
+        state = cog.lifecycle_manager.state_tracker.state
+        if state == LifecycleState.READY:
+            logger.info("Initialization completed successfully")
+        elif state == LifecycleState.ERROR:
+            logger.error("Initialization failed")
+        else:
+            logger.warning(f"Unexpected state after initialization: {state.name}")
+            
+    except Exception as e:
+        logger.error(f"Error in initialization callback: {str(e)}", exc_info=True)
+        # We don't raise here since this is a callback
+
+def get_init_status(cog: "VideoArchiver") -> Dict[str, Any]:
+    """
+    Get initialization status information.
+    
+    Args:
+        cog: VideoArchiver cog instance
+        
+    Returns:
+        Dictionary containing initialization status
+    """
+    return {
+        "state": cog.lifecycle_manager.state_tracker.state.name,
+        "ready": cog.ready.is_set(),
+        "components_initialized": all(
+            hasattr(cog, attr) and getattr(cog, attr) is not None
+            for attr in [
+                "processor",
+                "queue_manager",
+                "update_checker",
+                "ffmpeg_mgr",
+                "components",
+                "db"
+            ]
+        ),
+        "history": cog.lifecycle_manager.state_tracker.get_state_history()
+    }

videoarchiver/core/lifecycle.py

@@ -3,82 +3,195 @@
 import asyncio
 import logging
 import traceback
-from typing import Optional, Dict, Any, Set, List, Callable
-from enum import Enum
+from typing import Optional, Dict, Any, Set, List, Callable, TypedDict, ClassVar, Union
+from enum import Enum, auto
 from datetime import datetime
 
 from .cleanup import cleanup_resources, force_cleanup_resources
-from ..utils.exceptions import VideoArchiverError
+from ..utils.exceptions import (
+    VideoArchiverError,
+    ErrorContext,
+    ErrorSeverity,
+    ComponentError,
+    CleanupError
+)
 
 logger = logging.getLogger("VideoArchiver")
 
 class LifecycleState(Enum):
     """Possible states in the cog lifecycle"""
-    UNINITIALIZED = "uninitialized"
-    INITIALIZING = "initializing"
-    READY = "ready"
-    UNLOADING = "unloading"
-    ERROR = "error"
+    UNINITIALIZED = auto()
+    INITIALIZING = auto()
+    READY = auto()
+    UNLOADING = auto()
+    ERROR = auto()
+
+class TaskStatus(Enum):
+    """Task execution status"""
+    RUNNING = auto()
+    COMPLETED = auto()
+    CANCELLED = auto()
+    FAILED = auto()
+
+class TaskHistory(TypedDict):
+    """Type definition for task history entry"""
+    start_time: str
+    end_time: Optional[str]
+    status: str
+    error: Optional[str]
+    duration: float
+
+class StateHistory(TypedDict):
+    """Type definition for state history entry"""
+    state: str
+    timestamp: str
+    duration: float
+    details: Optional[Dict[str, Any]]
+
+class LifecycleStatus(TypedDict):
+    """Type definition for lifecycle status"""
+    state: str
+    state_history: List[StateHistory]
+    tasks: Dict[str, Any]
+    health: bool
 
 class TaskManager:
     """Manages asyncio tasks"""
 
-    def __init__(self):
+    TASK_TIMEOUT: ClassVar[int] = 30  # Default task timeout in seconds
+
+    def __init__(self) -> None:
         self._tasks: Dict[str, asyncio.Task] = {}
-        self._task_history: Dict[str, Dict[str, Any]] = {}
+        self._task_history: Dict[str, TaskHistory] = {}
 
     async def create_task(
         self,
         name: str,
-        coro,
-        callback: Optional[Callable] = None
+        coro: Callable[..., Any],
+        callback: Optional[Callable[[asyncio.Task], None]] = None,
+        timeout: Optional[float] = None
     ) -> asyncio.Task:
-        """Create and track a task"""
-        task = asyncio.create_task(coro)
-        self._tasks[name] = task
-        self._task_history[name] = {
-            "start_time": datetime.utcnow(),
-            "status": "running"
-        }
+        """
+        Create and track a task.
+        
+        Args:
+            name: Task name
+            coro: Coroutine to run
+            callback: Optional completion callback
+            timeout: Optional timeout in seconds
+            
+        Returns:
+            Created task
+            
+        Raises:
+            ComponentError: If task creation fails
+        """
+        try:
+            task = asyncio.create_task(coro)
+            self._tasks[name] = task
+            self._task_history[name] = TaskHistory(
+                start_time=datetime.utcnow().isoformat(),
+                end_time=None,
+                status=TaskStatus.RUNNING.name,
+                error=None,
+                duration=0.0
+            )
 
-        if callback:
-            task.add_done_callback(lambda t: self._handle_completion(name, t, callback))
-        else:
-            task.add_done_callback(lambda t: self._handle_completion(name, t))
+            if timeout:
+                asyncio.create_task(self._handle_timeout(name, task, timeout))
 
-        return task
+            if callback:
+                task.add_done_callback(lambda t: self._handle_completion(name, t, callback))
+            else:
+                task.add_done_callback(lambda t: self._handle_completion(name, t))
+
+            return task
+
+        except Exception as e:
+            error = f"Failed to create task {name}: {str(e)}"
+            logger.error(error, exc_info=True)
+            raise ComponentError(
+                error,
+                context=ErrorContext(
+                    "TaskManager",
+                    "create_task",
+                    {"task_name": name},
+                    ErrorSeverity.HIGH
+                )
+            )
+
+    async def _handle_timeout(
+        self,
+        name: str,
+        task: asyncio.Task,
+        timeout: float
+    ) -> None:
+        """Handle task timeout"""
+        try:
+            await asyncio.wait_for(asyncio.shield(task), timeout=timeout)
+        except asyncio.TimeoutError:
+            if not task.done():
+                logger.warning(f"Task {name} timed out after {timeout}s")
+                task.cancel()
+                self._update_task_history(
+                    name,
+                    TaskStatus.FAILED,
+                    f"Task timed out after {timeout}s"
+                )
 
     def _handle_completion(
         self,
         name: str,
         task: asyncio.Task,
-        callback: Optional[Callable] = None
+        callback: Optional[Callable[[asyncio.Task], None]] = None
     ) -> None:
         """Handle task completion"""
         try:
             task.result()  # Raises exception if task failed
-            status = "completed"
+            status = TaskStatus.COMPLETED
+            error = None
         except asyncio.CancelledError:
-            status = "cancelled"
+            status = TaskStatus.CANCELLED
+            error = "Task was cancelled"
         except Exception as e:
-            status = "failed"
-            logger.error(f"Task {name} failed: {e}")
+            status = TaskStatus.FAILED
+            error = str(e)
+            logger.error(f"Task {name} failed: {error}", exc_info=True)
 
-        self._task_history[name].update({
-            "end_time": datetime.utcnow(),
-            "status": status
-        })
+        self._update_task_history(name, status, error)
 
         if callback:
             try:
                 callback(task)
             except Exception as e:
-                logger.error(f"Task callback error for {name}: {e}")
+                logger.error(f"Task callback error for {name}: {e}", exc_info=True)
 
         self._tasks.pop(name, None)
 
+    def _update_task_history(
+        self,
+        name: str,
+        status: TaskStatus,
+        error: Optional[str] = None
+    ) -> None:
+        """Update task history entry"""
+        if name in self._task_history:
+            end_time = datetime.utcnow()
+            start_time = datetime.fromisoformat(self._task_history[name]["start_time"])
+            self._task_history[name].update({
+                "end_time": end_time.isoformat(),
+                "status": status.name,
+                "error": error,
+                "duration": (end_time - start_time).total_seconds()
+            })
+
     async def cancel_task(self, name: str) -> None:
-        """Cancel a specific task"""
+        """
+        Cancel a specific task.
+        
+        Args:
+            name: Task name to cancel
+        """
         if task := self._tasks.get(name):
             if not task.done():
                 task.cancel()
@@ -87,7 +200,7 @@ class TaskManager:
                 except asyncio.CancelledError:
                     pass
                 except Exception as e:
-                    logger.error(f"Error cancelling task {name}: {e}")
+                    logger.error(f"Error cancelling task {name}: {e}", exc_info=True)
 
     async def cancel_all_tasks(self) -> None:
         """Cancel all tracked tasks"""
@@ -95,7 +208,12 @@ class TaskManager:
             await self.cancel_task(name)
 
     def get_task_status(self) -> Dict[str, Any]:
-        """Get status of all tasks"""
+        """
+        Get status of all tasks.
+        
+        Returns:
+            Dictionary containing task status information
+        """
         return {
             "active_tasks": list(self._tasks.keys()),
             "history": self._task_history.copy()
@@ -104,42 +222,80 @@ class TaskManager:
 class StateTracker:
     """Tracks lifecycle state and transitions"""
 
-    def __init__(self):
+    def __init__(self) -> None:
         self.state = LifecycleState.UNINITIALIZED
-        self.state_history: List[Dict[str, Any]] = []
+        self.state_history: List[StateHistory] = []
         self._record_state()
 
-    def set_state(self, state: LifecycleState) -> None:
-        """Set current state"""
+    def set_state(
+        self,
+        state: LifecycleState,
+        details: Optional[Dict[str, Any]] = None
+    ) -> None:
+        """
+        Set current state.
+        
+        Args:
+            state: New state
+            details: Optional state transition details
+        """
         self.state = state
-        self._record_state()
+        self._record_state(details)
 
-    def _record_state(self) -> None:
+    def _record_state(
+        self,
+        details: Optional[Dict[str, Any]] = None
+    ) -> None:
         """Record state transition"""
-        self.state_history.append({
-            "state": self.state.value,
-            "timestamp": datetime.utcnow()
-        })
+        now = datetime.utcnow()
+        duration = 0.0
+        if self.state_history:
+            last_state = datetime.fromisoformat(self.state_history[-1]["timestamp"])
+            duration = (now - last_state).total_seconds()
 
-    def get_state_history(self) -> List[Dict[str, Any]]:
+        self.state_history.append(StateHistory(
+            state=self.state.name,
+            timestamp=now.isoformat(),
+            duration=duration,
+            details=details
+        ))
+
+    def get_state_history(self) -> List[StateHistory]:
         """Get state transition history"""
         return self.state_history.copy()
 
 class LifecycleManager:
     """Manages the lifecycle of the VideoArchiver cog"""
 
-    def __init__(self, cog):
+    INIT_TIMEOUT: ClassVar[int] = 60  # 1 minute timeout for initialization
+    UNLOAD_TIMEOUT: ClassVar[int] = 30  # 30 seconds timeout for unloading
+    CLEANUP_TIMEOUT: ClassVar[int] = 15  # 15 seconds timeout for cleanup
+
+    def __init__(self, cog: Any) -> None:
         self.cog = cog
         self.task_manager = TaskManager()
         self.state_tracker = StateTracker()
         self._cleanup_handlers: Set[Callable] = set()
 
-    def register_cleanup_handler(self, handler: Callable) -> None:
-        """Register a cleanup handler"""
+    def register_cleanup_handler(
+        self,
+        handler: Union[Callable[[], None], Callable[[], Any]]
+    ) -> None:
+        """
+        Register a cleanup handler.
+        
+        Args:
+            handler: Cleanup handler function
+        """
         self._cleanup_handlers.add(handler)
 
     async def initialize_cog(self) -> None:
-        """Initialize all components with proper error handling"""
+        """
+        Initialize all components with proper error handling.
+        
+        Raises:
+            ComponentError: If initialization fails
+        """
         try:
             # Initialize components in sequence
             await self.cog.component_manager.initialize_components()
@@ -149,24 +305,47 @@ class LifecycleManager:
             logger.info("VideoArchiver initialization completed successfully")
 
         except Exception as e:
-            logger.error(f"Error during initialization: {str(e)}")
+            error = f"Error during initialization: {str(e)}"
+            logger.error(error, exc_info=True)
             await cleanup_resources(self.cog)
-            raise
+            raise ComponentError(
+                error,
+                context=ErrorContext(
+                    "LifecycleManager",
+                    "initialize_cog",
+                    None,
+                    ErrorSeverity.HIGH
+                )
+            )
 
     def init_callback(self, task: asyncio.Task) -> None:
         """Handle initialization task completion"""
         try:
             task.result()
             logger.info("Initialization completed successfully")
+            self.state_tracker.set_state(LifecycleState.READY)
         except asyncio.CancelledError:
             logger.warning("Initialization was cancelled")
+            self.state_tracker.set_state(
+                LifecycleState.ERROR,
+                {"reason": "cancelled"}
+            )
             asyncio.create_task(cleanup_resources(self.cog))
         except Exception as e:
-            logger.error(f"Initialization failed: {str(e)}\n{traceback.format_exc()}")
+            logger.error(f"Initialization failed: {str(e)}", exc_info=True)
+            self.state_tracker.set_state(
+                LifecycleState.ERROR,
+                {"error": str(e)}
+            )
             asyncio.create_task(cleanup_resources(self.cog))
 
     async def handle_load(self) -> None:
-        """Handle cog loading without blocking"""
+        """
+        Handle cog loading without blocking.
+        
+        Raises:
+            VideoArchiverError: If load fails
+        """
         try:
             self.state_tracker.set_state(LifecycleState.INITIALIZING)
             
@@ -174,7 +353,8 @@ class LifecycleManager:
             await self.task_manager.create_task(
                 "initialization",
                 self.initialize_cog(),
-                self.init_callback
+                self.init_callback,
+                timeout=self.INIT_TIMEOUT
             )
             logger.info("Initialization started in background")
             
@@ -184,14 +364,27 @@ class LifecycleManager:
             try:
                 await asyncio.wait_for(
                     force_cleanup_resources(self.cog),
-                    timeout=15  # CLEANUP_TIMEOUT
+                    timeout=self.CLEANUP_TIMEOUT
                 )
             except asyncio.TimeoutError:
                 logger.error("Force cleanup during load error timed out")
-            raise VideoArchiverError(f"Error during cog load: {str(e)}")
+            raise VideoArchiverError(
+                f"Error during cog load: {str(e)}",
+                context=ErrorContext(
+                    "LifecycleManager",
+                    "handle_load",
+                    None,
+                    ErrorSeverity.HIGH
+                )
+            )
 
     async def handle_unload(self) -> None:
-        """Clean up when cog is unloaded"""
+        """
+        Clean up when cog is unloaded.
+        
+        Raises:
+            CleanupError: If cleanup fails
+        """
         self.state_tracker.set_state(LifecycleState.UNLOADING)
         
         try:
@@ -205,9 +398,10 @@ class LifecycleManager:
             try:
                 cleanup_task = await self.task_manager.create_task(
                     "cleanup",
-                    cleanup_resources(self.cog)
+                    cleanup_resources(self.cog),
+                    timeout=self.UNLOAD_TIMEOUT
                 )
-                await asyncio.wait_for(cleanup_task, timeout=30)  # UNLOAD_TIMEOUT
+                await cleanup_task
                 logger.info("Normal cleanup completed")
                 
             except (asyncio.TimeoutError, Exception) as e:
@@ -220,17 +414,50 @@ class LifecycleManager:
                 try:
                     await asyncio.wait_for(
                         force_cleanup_resources(self.cog),
-                        timeout=15  # CLEANUP_TIMEOUT
+                        timeout=self.CLEANUP_TIMEOUT
                     )
                     logger.info("Force cleanup completed")
                 except asyncio.TimeoutError:
-                    logger.error("Force cleanup timed out")
+                    error = "Force cleanup timed out"
+                    logger.error(error)
+                    raise CleanupError(
+                        error,
+                        context=ErrorContext(
+                            "LifecycleManager",
+                            "handle_unload",
+                            None,
+                            ErrorSeverity.CRITICAL
+                        )
+                    )
                 except Exception as e:
-                    logger.error(f"Error during force cleanup: {str(e)}")
+                    error = f"Error during force cleanup: {str(e)}"
+                    logger.error(error)
+                    raise CleanupError(
+                        error,
+                        context=ErrorContext(
+                            "LifecycleManager",
+                            "handle_unload",
+                            None,
+                            ErrorSeverity.CRITICAL
+                        )
+                    )
 
         except Exception as e:
-            logger.error(f"Error during cog unload: {str(e)}")
-            self.state_tracker.set_state(LifecycleState.ERROR)
+            error = f"Error during cog unload: {str(e)}"
+            logger.error(error, exc_info=True)
+            self.state_tracker.set_state(
+                LifecycleState.ERROR,
+                {"error": str(e)}
+            )
+            raise CleanupError(
+                error,
+                context=ErrorContext(
+                    "LifecycleManager",
+                    "handle_unload",
+                    None,
+                    ErrorSeverity.CRITICAL
+                )
+            )
         finally:
             # Clear all references
             await self._cleanup_references()
@@ -244,7 +471,7 @@ class LifecycleManager:
                 else:
                     handler()
             except Exception as e:
-                logger.error(f"Error in cleanup handler: {e}")
+                logger.error(f"Error in cleanup handler: {e}", exc_info=True)
 
     async def _cleanup_references(self) -> None:
         """Clean up all references"""
@@ -257,10 +484,16 @@ class LifecycleManager:
         self.cog.components.clear()
         self.cog.db = None
 
-    def get_status(self) -> Dict[str, Any]:
-        """Get current lifecycle status"""
-        return {
-            "state": self.state_tracker.state.value,
-            "state_history": self.state_tracker.get_state_history(),
-            "tasks": self.task_manager.get_task_status()
-        }
+    def get_status(self) -> LifecycleStatus:
+        """
+        Get current lifecycle status.
+        
+        Returns:
+            Dictionary containing lifecycle status information
+        """
+        return LifecycleStatus(
+            state=self.state_tracker.state.name,
+            state_history=self.state_tracker.get_state_history(),
+            tasks=self.task_manager.get_task_status(),
+            health=self.state_tracker.state == LifecycleState.READY
+        )

videoarchiver/core/response_handler.py

@@ -1,57 +1,116 @@
 """Module for handling command responses"""
 
 import logging
+from enum import Enum, auto
+from typing import Optional, Union, Dict, Any, TypedDict, ClassVar
+from datetime import datetime
 import discord
-from typing import Optional, Union, Dict, Any
 from redbot.core.commands import Context
 
+from ..utils.exceptions import ErrorSeverity
+
 logger = logging.getLogger("VideoArchiver")
 
+class ResponseType(Enum):
+    """Types of responses"""
+    NORMAL = auto()
+    SUCCESS = auto()
+    ERROR = auto()
+    WARNING = auto()
+    INFO = auto()
+    DEBUG = auto()
+
+class ResponseTheme(TypedDict):
+    """Type definition for response theme"""
+    emoji: str
+    color: discord.Color
+
+class ResponseFormat(TypedDict):
+    """Type definition for formatted response"""
+    content: str
+    color: discord.Color
+    timestamp: str
+
 class ResponseFormatter:
     """Formats responses for consistency"""
 
-    @staticmethod
-    def format_success(message: str) -> Dict[str, Any]:
-        """Format a success message"""
-        return {
-            "content": f"✅ {message}",
-            "color": discord.Color.green()
-        }
+    THEMES: ClassVar[Dict[ResponseType, ResponseTheme]] = {
+        ResponseType.SUCCESS: ResponseTheme(emoji="✅", color=discord.Color.green()),
+        ResponseType.ERROR: ResponseTheme(emoji="❌", color=discord.Color.red()),
+        ResponseType.WARNING: ResponseTheme(emoji="⚠️", color=discord.Color.gold()),
+        ResponseType.INFO: ResponseTheme(emoji="ℹ️", color=discord.Color.blue()),
+        ResponseType.DEBUG: ResponseTheme(emoji="🔧", color=discord.Color.greyple())
+    }
 
-    @staticmethod
-    def format_error(message: str) -> Dict[str, Any]:
-        """Format an error message"""
-        return {
-            "content": f"❌ {message}",
-            "color": discord.Color.red()
-        }
+    SEVERITY_MAPPING: ClassVar[Dict[ErrorSeverity, ResponseType]] = {
+        ErrorSeverity.LOW: ResponseType.INFO,
+        ErrorSeverity.MEDIUM: ResponseType.WARNING,
+        ErrorSeverity.HIGH: ResponseType.ERROR,
+        ErrorSeverity.CRITICAL: ResponseType.ERROR
+    }
 
-    @staticmethod
-    def format_warning(message: str) -> Dict[str, Any]:
-        """Format a warning message"""
-        return {
-            "content": f"⚠️ {message}",
-            "color": discord.Color.yellow()
-        }
+    @classmethod
+    def format_response(
+        cls,
+        message: str,
+        response_type: ResponseType = ResponseType.NORMAL
+    ) -> ResponseFormat:
+        """
+        Format a response message.
+        
+        Args:
+            message: Message to format
+            response_type: Type of response
+            
+        Returns:
+            Formatted response dictionary
+        """
+        theme = cls.THEMES.get(response_type)
+        if theme:
+            return ResponseFormat(
+                content=f"{theme['emoji']} {message}",
+                color=theme['color'],
+                timestamp=datetime.utcnow().isoformat()
+            )
+        return ResponseFormat(
+            content=message,
+            color=discord.Color.default(),
+            timestamp=datetime.utcnow().isoformat()
+        )
 
-    @staticmethod
-    def format_info(message: str) -> Dict[str, Any]:
-        """Format an info message"""
-        return {
-            "content": f"ℹ️ {message}",
-            "color": discord.Color.blue()
-        }
+    @classmethod
+    def get_response_type(cls, severity: ErrorSeverity) -> ResponseType:
+        """
+        Get response type for error severity.
+        
+        Args:
+            severity: Error severity level
+            
+        Returns:
+            Appropriate response type
+        """
+        return cls.SEVERITY_MAPPING.get(severity, ResponseType.ERROR)
 
 class InteractionHandler:
     """Handles slash command interactions"""
 
-    @staticmethod
     async def send_initial_response(
+        self,
         interaction: discord.Interaction,
         content: Optional[str] = None,
         embed: Optional[discord.Embed] = None
     ) -> bool:
-        """Send initial interaction response"""
+        """
+        Send initial interaction response.
+        
+        Args:
+            interaction: Discord interaction
+            content: Optional message content
+            embed: Optional embed
+            
+        Returns:
+            True if response was sent successfully
+        """
         try:
             if not interaction.response.is_done():
                 if embed:
@@ -61,16 +120,26 @@ class InteractionHandler:
                 return True
             return False
         except Exception as e:
-            logger.error(f"Error sending initial interaction response: {e}")
+            logger.error(f"Error sending initial interaction response: {e}", exc_info=True)
             return False
 
-    @staticmethod
     async def send_followup(
+        self,
         interaction: discord.Interaction,
         content: Optional[str] = None,
         embed: Optional[discord.Embed] = None
     ) -> bool:
-        """Send interaction followup"""
+        """
+        Send interaction followup.
+        
+        Args:
+            interaction: Discord interaction
+            content: Optional message content
+            embed: Optional embed
+            
+        Returns:
+            True if followup was sent successfully
+        """
         try:
             if embed:
                 await interaction.followup.send(content=content, embed=embed)
@@ -78,13 +147,13 @@ class InteractionHandler:
                 await interaction.followup.send(content=content)
             return True
         except Exception as e:
-            logger.error(f"Error sending interaction followup: {e}")
+            logger.error(f"Error sending interaction followup: {e}", exc_info=True)
             return False
 
 class ResponseManager:
     """Manages command responses"""
 
-    def __init__(self):
+    def __init__(self) -> None:
         self.formatter = ResponseFormatter()
         self.interaction_handler = InteractionHandler()
 
@@ -93,25 +162,37 @@ class ResponseManager:
         ctx: Context,
         content: Optional[str] = None,
         embed: Optional[discord.Embed] = None,
-        response_type: str = "normal"
+        response_type: Union[ResponseType, str, ErrorSeverity] = ResponseType.NORMAL
     ) -> None:
-        """Send a response to a command
+        """
+        Send a response to a command.
         
         Args:
             ctx: Command context
             content: Optional message content
             embed: Optional embed
-            response_type: Type of response (normal, success, error, warning, info)
+            response_type: Type of response or error severity
         """
         try:
-            # Format response if type specified
-            if response_type != "normal":
-                format_method = getattr(self.formatter, f"format_{response_type}", None)
-                if format_method and content:
-                    formatted = format_method(content)
-                    content = formatted["content"]
-                    if not embed:
-                        embed = discord.Embed(color=formatted["color"])
+            # Convert string response type to enum
+            if isinstance(response_type, str):
+                try:
+                    response_type = ResponseType[response_type.upper()]
+                except KeyError:
+                    response_type = ResponseType.NORMAL
+            # Convert error severity to response type
+            elif isinstance(response_type, ErrorSeverity):
+                response_type = self.formatter.get_response_type(response_type)
+
+            # Format response
+            if response_type != ResponseType.NORMAL and content:
+                formatted = self.formatter.format_response(content, response_type)
+                content = formatted["content"]
+                if not embed:
+                    embed = discord.Embed(
+                        color=formatted["color"],
+                        timestamp=datetime.fromisoformat(formatted["timestamp"])
+                    )
 
             # Handle response
             if self._is_interaction(ctx):
@@ -120,7 +201,7 @@ class ResponseManager:
                 await self._handle_regular_response(ctx, content, embed)
 
         except Exception as e:
-            logger.error(f"Error sending response: {e}")
+            logger.error(f"Error sending response: {e}", exc_info=True)
             await self._send_fallback_response(ctx, content, embed)
 
     def _is_interaction(self, ctx: Context) -> bool:
@@ -151,7 +232,7 @@ class ResponseManager:
             await self._handle_regular_response(ctx, content, embed)
 
         except Exception as e:
-            logger.error(f"Error handling interaction response: {e}")
+            logger.error(f"Error handling interaction response: {e}", exc_info=True)
             await self._send_fallback_response(ctx, content, embed)
 
     async def _handle_regular_response(
@@ -167,7 +248,7 @@ class ResponseManager:
             else:
                 await ctx.send(content=content)
         except Exception as e:
-            logger.error(f"Error sending regular response: {e}")
+            logger.error(f"Error sending regular response: {e}", exc_info=True)
             await self._send_fallback_response(ctx, content, embed)
 
     async def _send_fallback_response(
@@ -183,7 +264,7 @@ class ResponseManager:
             else:
                 await ctx.send(content=content)
         except Exception as e:
-            logger.error(f"Failed to send fallback response: {e}")
+            logger.error(f"Failed to send fallback response: {e}", exc_info=True)
 
 # Global response manager instance
 response_manager = ResponseManager()
@@ -192,7 +273,15 @@ async def handle_response(
     ctx: Context,
     content: Optional[str] = None,
     embed: Optional[discord.Embed] = None,
-    response_type: str = "normal"
+    response_type: Union[ResponseType, str, ErrorSeverity] = ResponseType.NORMAL
 ) -> None:
-    """Helper function to handle responses using the response manager"""
+    """
+    Helper function to handle responses using the response manager.
+    
+    Args:
+        ctx: Command context
+        content: Optional message content
+        embed: Optional embed
+        response_type: Type of response or error severity
+    """
     await response_manager.send_response(ctx, content, embed, response_type)

videoarchiver/core/settings.py

@@ -1,8 +1,14 @@
 """Module for managing VideoArchiver settings"""
 
-from typing import Dict, Any, List, Optional
-from dataclasses import dataclass
-from enum import Enum
+from typing import Dict, Any, List, Optional, Union, TypedDict, ClassVar
+from dataclasses import dataclass, field
+from enum import Enum, auto
+
+from ..utils.exceptions import (
+    ConfigurationError,
+    ErrorContext,
+    ErrorSeverity
+)
 
 class VideoFormat(Enum):
     """Supported video formats"""
@@ -17,133 +23,177 @@ class VideoQuality(Enum):
     HIGH = "high"    # 1080p
     ULTRA = "ultra"  # 4K
 
+class SettingCategory(Enum):
+    """Setting categories"""
+    GENERAL = auto()
+    CHANNELS = auto()
+    PERMISSIONS = auto()
+    VIDEO = auto()
+    MESSAGES = auto()
+    PERFORMANCE = auto()
+    FEATURES = auto()
+
+class ValidationResult(TypedDict):
+    """Type definition for validation result"""
+    valid: bool
+    error: Optional[str]
+    details: Dict[str, Any]
+
 @dataclass
 class SettingDefinition:
     """Defines a setting's properties"""
     name: str
-    category: str
+    category: SettingCategory
     default_value: Any
     description: str
     data_type: type
     required: bool = True
-    min_value: Optional[int] = None
-    max_value: Optional[int] = None
+    min_value: Optional[Union[int, float]] = None
+    max_value: Optional[Union[int, float]] = None
     choices: Optional[List[Any]] = None
     depends_on: Optional[str] = None
+    validation_func: Optional[callable] = None
+    error_message: Optional[str] = None
 
-class SettingCategory(Enum):
-    """Setting categories"""
-    GENERAL = "general"
-    CHANNELS = "channels"
-    PERMISSIONS = "permissions"
-    VIDEO = "video"
-    MESSAGES = "messages"
-    PERFORMANCE = "performance"
-    FEATURES = "features"
+    def __post_init__(self) -> None:
+        """Validate setting definition"""
+        if self.choices and self.default_value not in self.choices:
+            raise ConfigurationError(
+                f"Default value {self.default_value} not in choices {self.choices}",
+                context=ErrorContext(
+                    "Settings",
+                    "definition_validation",
+                    {"setting": self.name},
+                    ErrorSeverity.HIGH
+                )
+            )
+
+        if self.min_value is not None and self.max_value is not None:
+            if self.min_value > self.max_value:
+                raise ConfigurationError(
+                    f"Min value {self.min_value} greater than max value {self.max_value}",
+                    context=ErrorContext(
+                        "Settings",
+                        "definition_validation",
+                        {"setting": self.name},
+                        ErrorSeverity.HIGH
+                    )
+                )
 
 class Settings:
     """Manages VideoArchiver settings"""
 
     # Setting definitions
-    SETTINGS = {
+    SETTINGS: ClassVar[Dict[str, SettingDefinition]] = {
         "enabled": SettingDefinition(
             name="enabled",
-            category=SettingCategory.GENERAL.value,
+            category=SettingCategory.GENERAL,
             default_value=False,
             description="Whether the archiver is enabled for this guild",
             data_type=bool
         ),
         "archive_channel": SettingDefinition(
             name="archive_channel",
-            category=SettingCategory.CHANNELS.value,
+            category=SettingCategory.CHANNELS,
             default_value=None,
             description="Channel where archived videos are posted",
             data_type=int,
-            required=False
+            required=False,
+            error_message="Archive channel must be a valid channel ID"
         ),
         "log_channel": SettingDefinition(
             name="log_channel",
-            category=SettingCategory.CHANNELS.value,
+            category=SettingCategory.CHANNELS,
             default_value=None,
             description="Channel for logging archiver actions",
             data_type=int,
-            required=False
+            required=False,
+            error_message="Log channel must be a valid channel ID"
         ),
         "enabled_channels": SettingDefinition(
             name="enabled_channels",
-            category=SettingCategory.CHANNELS.value,
+            category=SettingCategory.CHANNELS,
             default_value=[],
             description="Channels to monitor (empty means all channels)",
-            data_type=list
+            data_type=list,
+            error_message="Enabled channels must be a list of valid channel IDs"
         ),
         "allowed_roles": SettingDefinition(
             name="allowed_roles",
-            category=SettingCategory.PERMISSIONS.value,
+            category=SettingCategory.PERMISSIONS,
             default_value=[],
             description="Roles allowed to use archiver (empty means all roles)",
-            data_type=list
+            data_type=list,
+            error_message="Allowed roles must be a list of valid role IDs"
         ),
         "video_format": SettingDefinition(
             name="video_format",
-            category=SettingCategory.VIDEO.value,
+            category=SettingCategory.VIDEO,
             default_value=VideoFormat.MP4.value,
             description="Format for archived videos",
             data_type=str,
-            choices=[format.value for format in VideoFormat]
+            choices=[format.value for format in VideoFormat],
+            error_message=f"Video format must be one of: {', '.join(f.value for f in VideoFormat)}"
         ),
         "video_quality": SettingDefinition(
             name="video_quality",
-            category=SettingCategory.VIDEO.value,
+            category=SettingCategory.VIDEO,
             default_value=VideoQuality.HIGH.value,
             description="Quality preset for archived videos",
             data_type=str,
-            choices=[quality.value for quality in VideoQuality]
+            choices=[quality.value for quality in VideoQuality],
+            error_message=f"Video quality must be one of: {', '.join(q.value for q in VideoQuality)}"
         ),
         "max_file_size": SettingDefinition(
             name="max_file_size",
-            category=SettingCategory.VIDEO.value,
+            category=SettingCategory.VIDEO,
             default_value=8,
             description="Maximum file size in MB",
             data_type=int,
             min_value=1,
-            max_value=100
+            max_value=100,
+            error_message="Max file size must be between 1 and 100 MB"
         ),
         "message_duration": SettingDefinition(
             name="message_duration",
-            category=SettingCategory.MESSAGES.value,
+            category=SettingCategory.MESSAGES,
             default_value=30,
             description="Duration to show status messages (seconds)",
             data_type=int,
             min_value=5,
-            max_value=300
+            max_value=300,
+            error_message="Message duration must be between 5 and 300 seconds"
         ),
         "message_template": SettingDefinition(
             name="message_template",
-            category=SettingCategory.MESSAGES.value,
+            category=SettingCategory.MESSAGES,
             default_value="{author} archived a video from {channel}",
             description="Template for archive messages",
-            data_type=str
+            data_type=str,
+            error_message="Message template must contain {author} and {channel} placeholders"
         ),
         "concurrent_downloads": SettingDefinition(
             name="concurrent_downloads",
-            category=SettingCategory.PERFORMANCE.value,
+            category=SettingCategory.PERFORMANCE,
             default_value=2,
             description="Maximum concurrent downloads",
             data_type=int,
             min_value=1,
-            max_value=5
+            max_value=5,
+            error_message="Concurrent downloads must be between 1 and 5"
         ),
         "enabled_sites": SettingDefinition(
             name="enabled_sites",
-            category=SettingCategory.FEATURES.value,
+            category=SettingCategory.FEATURES,
             default_value=None,
             description="Sites to enable archiving for (None means all sites)",
             data_type=list,
-            required=False
+            required=False,
+            error_message="Enabled sites must be a list of valid site identifiers"
         ),
         "use_database": SettingDefinition(
             name="use_database",
-            category=SettingCategory.FEATURES.value,
+            category=SettingCategory.FEATURES,
             default_value=False,
             description="Enable database tracking of archived videos",
             data_type=bool
@@ -152,12 +202,28 @@ class Settings:
 
     @classmethod
     def get_setting_definition(cls, setting: str) -> Optional[SettingDefinition]:
-        """Get definition for a setting"""
+        """
+        Get definition for a setting.
+        
+        Args:
+            setting: Setting name
+            
+        Returns:
+            Setting definition or None if not found
+        """
         return cls.SETTINGS.get(setting)
 
     @classmethod
-    def get_settings_by_category(cls, category: str) -> Dict[str, SettingDefinition]:
-        """Get all settings in a category"""
+    def get_settings_by_category(cls, category: SettingCategory) -> Dict[str, SettingDefinition]:
+        """
+        Get all settings in a category.
+        
+        Args:
+            category: Setting category
+            
+        Returns:
+            Dictionary of settings in the category
+        """
         return {
             name: definition
             for name, definition in cls.SETTINGS.items()
@@ -165,36 +231,109 @@ class Settings:
         }
 
     @classmethod
-    def validate_setting(cls, setting: str, value: Any) -> bool:
-        """Validate a setting value"""
+    def validate_setting(cls, setting: str, value: Any) -> ValidationResult:
+        """
+        Validate a setting value.
+        
+        Args:
+            setting: Setting name
+            value: Value to validate
+            
+        Returns:
+            Validation result dictionary
+            
+        Raises:
+            ConfigurationError: If setting definition is not found
+        """
         definition = cls.get_setting_definition(setting)
         if not definition:
-            return False
+            raise ConfigurationError(
+                f"Unknown setting: {setting}",
+                context=ErrorContext(
+                    "Settings",
+                    "validation",
+                    {"setting": setting},
+                    ErrorSeverity.HIGH
+                )
+            )
+
+        details = {
+            "setting": setting,
+            "value": value,
+            "type": type(value).__name__,
+            "expected_type": definition.data_type.__name__
+        }
 
         # Check type
         if not isinstance(value, definition.data_type):
-            return False
+            return ValidationResult(
+                valid=False,
+                error=f"Invalid type: expected {definition.data_type.__name__}, got {type(value).__name__}",
+                details=details
+            )
 
         # Check required
         if definition.required and value is None:
-            return False
+            return ValidationResult(
+                valid=False,
+                error="Required setting cannot be None",
+                details=details
+            )
 
         # Check choices
         if definition.choices and value not in definition.choices:
-            return False
+            return ValidationResult(
+                valid=False,
+                error=f"Value must be one of: {', '.join(map(str, definition.choices))}",
+                details=details
+            )
 
         # Check numeric bounds
         if isinstance(value, (int, float)):
             if definition.min_value is not None and value < definition.min_value:
-                return False
+                return ValidationResult(
+                    valid=False,
+                    error=f"Value must be at least {definition.min_value}",
+                    details=details
+                )
             if definition.max_value is not None and value > definition.max_value:
-                return False
+                return ValidationResult(
+                    valid=False,
+                    error=f"Value must be at most {definition.max_value}",
+                    details=details
+                )
 
-        return True
+        # Custom validation
+        if definition.validation_func:
+            try:
+                result = definition.validation_func(value)
+                if not result:
+                    return ValidationResult(
+                        valid=False,
+                        error=definition.error_message or "Validation failed",
+                        details=details
+                    )
+            except Exception as e:
+                return ValidationResult(
+                    valid=False,
+                    error=str(e),
+                    details=details
+                )
+
+        return ValidationResult(
+            valid=True,
+            error=None,
+            details=details
+        )
 
     @property
     def default_guild_settings(self) -> Dict[str, Any]:
-        """Default settings for guild configuration"""
+        """
+        Default settings for guild configuration.
+        
+        Returns:
+            Dictionary of default settings
+        """
         return {
             name: definition.default_value
             for name, definition in self.SETTINGS.items()
@@ -202,14 +341,22 @@ class Settings:
 
     @classmethod
     def get_setting_help(cls, setting: str) -> Optional[str]:
-        """Get help text for a setting"""
+        """
+        Get help text for a setting.
+        
+        Args:
+            setting: Setting name
+            
+        Returns:
+            Help text or None if setting not found
+        """
         definition = cls.get_setting_definition(setting)
         if not definition:
             return None
 
         help_text = [
             f"Setting: {definition.name}",
-            f"Category: {definition.category}",
+            f"Category: {definition.category.name}",
             f"Description: {definition.description}",
             f"Type: {definition.data_type.__name__}",
             f"Required: {definition.required}",
@@ -224,5 +371,7 @@ class Settings:
             help_text.append(f"Maximum: {definition.max_value}")
         if definition.depends_on:
             help_text.append(f"Depends on: {definition.depends_on}")
+        if definition.error_message:
+            help_text.append(f"Error: {definition.error_message}")
 
         return "\n".join(help_text)

videoarchiver/database/schema_manager.py

@@ -3,81 +3,283 @@
 import logging
 import sqlite3
 from pathlib import Path
-from typing import List
+from typing import List, Dict, Any, Optional, TypedDict, ClassVar, Union
+from enum import Enum, auto
+from datetime import datetime
+
+from ..utils.exceptions import DatabaseError, ErrorContext, ErrorSeverity
 
 logger = logging.getLogger("DBSchemaManager")
 
 
+class SchemaState(Enum):
+    """Schema states"""
+
+    UNINITIALIZED = auto()
+    INITIALIZING = auto()
+    READY = auto()
+    MIGRATING = auto()
+    ERROR = auto()
+
+
+class MigrationType(Enum):
+    """Migration types"""
+
+    CREATE = auto()
+    ALTER = auto()
+    INDEX = auto()
+    DATA = auto()
+
+
+class SchemaVersion(TypedDict):
+    """Type definition for schema version"""
+
+    version: int
+    last_updated: str
+    migrations_applied: List[str]
+
+
+class MigrationResult(TypedDict):
+    """Type definition for migration result"""
+
+    success: bool
+    error: Optional[str]
+    migration_type: str
+    duration: float
+    timestamp: str
+
+
+class SchemaStatus(TypedDict):
+    """Type definition for schema status"""
+
+    state: str
+    current_version: int
+    target_version: int
+    last_migration: Optional[str]
+    error: Optional[str]
+    initialized: bool
+
+
 class DatabaseSchemaManager:
     """Manages database schema creation and updates"""
 
-    SCHEMA_VERSION = 1  # Increment when schema changes
+    SCHEMA_VERSION: ClassVar[int] = 1  # Increment when schema changes
+    MIGRATION_TIMEOUT: ClassVar[float] = 30.0  # Seconds
 
-    def __init__(self, db_path: Path):
+    def __init__(self, db_path: Path) -> None:
+        """
+        Initialize schema manager.
+
+        Args:
+            db_path: Path to SQLite database file
+        """
         self.db_path = db_path
+        self.state = SchemaState.UNINITIALIZED
+        self.last_error: Optional[str] = None
+        self.last_migration: Optional[str] = None
 
     def initialize_schema(self) -> None:
-        """Initialize or update the database schema"""
+        """
+        Initialize or update the database schema.
+
+        Raises:
+            DatabaseError: If schema initialization fails
+        """
         try:
+            self.state = SchemaState.INITIALIZING
             self._create_schema_version_table()
             current_version = self._get_schema_version()
 
             if current_version < self.SCHEMA_VERSION:
+                self.state = SchemaState.MIGRATING
                 self._apply_migrations(current_version)
                 self._update_schema_version()
 
+            self.state = SchemaState.READY
+
         except sqlite3.Error as e:
-            logger.error(f"Schema initialization error: {e}")
-            raise
+            self.state = SchemaState.ERROR
+            self.last_error = str(e)
+            error = f"Schema initialization failed: {str(e)}"
+            logger.error(error, exc_info=True)
+            raise DatabaseError(
+                error,
+                context=ErrorContext(
+                    "SchemaManager",
+                    "initialize_schema",
+                    {"current_version": current_version},
+                    ErrorSeverity.CRITICAL,
+                ),
+            )
 
     def _create_schema_version_table(self) -> None:
-        """Create schema version tracking table"""
-        with sqlite3.connect(self.db_path) as conn:
-            cursor = conn.cursor()
-            cursor.execute(
-                """
-                CREATE TABLE IF NOT EXISTS schema_version (
-                    version INTEGER PRIMARY KEY
+        """
+        Create schema version tracking table.
+
+        Raises:
+            DatabaseError: If table creation fails
+        """
+        try:
+            with sqlite3.connect(self.db_path) as conn:
+                cursor = conn.cursor()
+                cursor.execute(
+                    """
+                    CREATE TABLE IF NOT EXISTS schema_version (
+                        version INTEGER PRIMARY KEY,
+                        last_updated TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+                        migrations_applied TEXT
+                    )
+                    """
                 )
-            """
+                # Insert initial version if table is empty
+                cursor.execute(
+                    """
+                    INSERT OR IGNORE INTO schema_version (version, migrations_applied)
+                    VALUES (0, '[]')
+                    """
+                )
+                conn.commit()
+
+        except sqlite3.Error as e:
+            error = f"Failed to create schema version table: {str(e)}"
+            logger.error(error, exc_info=True)
+            raise DatabaseError(
+                error,
+                context=ErrorContext(
+                    "SchemaManager",
+                    "create_schema_version_table",
+                    None,
+                    ErrorSeverity.CRITICAL,
+                ),
             )
-            # Insert initial version if table is empty
-            cursor.execute("INSERT OR IGNORE INTO schema_version VALUES (0)")
-            conn.commit()
 
     def _get_schema_version(self) -> int:
-        """Get current schema version"""
-        with sqlite3.connect(self.db_path) as conn:
-            cursor = conn.cursor()
-            cursor.execute("SELECT version FROM schema_version LIMIT 1")
-            result = cursor.fetchone()
-            return result[0] if result else 0
+        """
+        Get current schema version.
+
+        Returns:
+            Current schema version
+
+        Raises:
+            DatabaseError: If version query fails
+        """
+        try:
+            with sqlite3.connect(self.db_path) as conn:
+                cursor = conn.cursor()
+                cursor.execute("SELECT version FROM schema_version LIMIT 1")
+                result = cursor.fetchone()
+                return result[0] if result else 0
+
+        except sqlite3.Error as e:
+            error = f"Failed to get schema version: {str(e)}"
+            logger.error(error, exc_info=True)
+            raise DatabaseError(
+                error,
+                context=ErrorContext(
+                    "SchemaManager", "get_schema_version", None, ErrorSeverity.HIGH
+                ),
+            )
 
     def _update_schema_version(self) -> None:
-        """Update schema version to current"""
-        with sqlite3.connect(self.db_path) as conn:
-            cursor = conn.cursor()
-            cursor.execute(
-                "UPDATE schema_version SET version = ?", (self.SCHEMA_VERSION,)
+        """
+        Update schema version to current.
+
+        Raises:
+            DatabaseError: If version update fails
+        """
+        try:
+            with sqlite3.connect(self.db_path) as conn:
+                cursor = conn.cursor()
+                cursor.execute(
+                    """
+                    UPDATE schema_version 
+                    SET version = ?, last_updated = CURRENT_TIMESTAMP
+                    """,
+                    (self.SCHEMA_VERSION,),
+                )
+                conn.commit()
+
+        except sqlite3.Error as e:
+            error = f"Failed to update schema version: {str(e)}"
+            logger.error(error, exc_info=True)
+            raise DatabaseError(
+                error,
+                context=ErrorContext(
+                    "SchemaManager",
+                    "update_schema_version",
+                    {"target_version": self.SCHEMA_VERSION},
+                    ErrorSeverity.HIGH,
+                ),
             )
-            conn.commit()
 
     def _apply_migrations(self, current_version: int) -> None:
-        """Apply necessary schema migrations"""
+        """
+        Apply necessary schema migrations.
+
+        Args:
+            current_version: Current schema version
+
+        Raises:
+            DatabaseError: If migrations fail
+        """
         migrations = self._get_migrations(current_version)
+        results: List[MigrationResult] = []
 
         with sqlite3.connect(self.db_path) as conn:
             cursor = conn.cursor()
             for migration in migrations:
+                start_time = datetime.utcnow()
                 try:
                     cursor.executescript(migration)
                     conn.commit()
+                    self.last_migration = migration
+
+                    results.append(
+                        MigrationResult(
+                            success=True,
+                            error=None,
+                            migration_type=MigrationType.ALTER.name,
+                            duration=(datetime.utcnow() - start_time).total_seconds(),
+                            timestamp=datetime.utcnow().isoformat(),
+                        )
+                    )
+
                 except sqlite3.Error as e:
-                    logger.error(f"Migration failed: {e}")
-                    raise
+                    error = f"Migration failed: {str(e)}"
+                    logger.error(error, exc_info=True)
+                    results.append(
+                        MigrationResult(
+                            success=False,
+                            error=str(e),
+                            migration_type=MigrationType.ALTER.name,
+                            duration=(datetime.utcnow() - start_time).total_seconds(),
+                            timestamp=datetime.utcnow().isoformat(),
+                        )
+                    )
+                    raise DatabaseError(
+                        error,
+                        context=ErrorContext(
+                            "SchemaManager",
+                            "apply_migrations",
+                            {
+                                "current_version": current_version,
+                                "migration": migration,
+                                "results": results,
+                            },
+                            ErrorSeverity.CRITICAL,
+                        ),
+                    )
 
     def _get_migrations(self, current_version: int) -> List[str]:
-        """Get list of migrations to apply"""
+        """
+        Get list of migrations to apply.
+
+        Args:
+            current_version: Current schema version
+
+        Returns:
+            List of migration scripts
+        """
         migrations = []
 
         # Version 0 to 1: Initial schema
@@ -95,7 +297,11 @@ class DatabaseSchemaManager:
                     duration INTEGER,
                     format TEXT,
                     resolution TEXT,
-                    bitrate INTEGER
+                    bitrate INTEGER,
+                    error_count INTEGER DEFAULT 0,
+                    last_error TEXT,
+                    last_accessed TIMESTAMP,
+                    metadata TEXT
                 );
                 
                 CREATE INDEX IF NOT EXISTS idx_guild_channel 
@@ -103,6 +309,9 @@ class DatabaseSchemaManager:
                 
                 CREATE INDEX IF NOT EXISTS idx_archived_at 
                 ON archived_videos(archived_at);
+                
+                CREATE INDEX IF NOT EXISTS idx_last_accessed
+                ON archived_videos(last_accessed);
             """
             )
 
@@ -111,3 +320,57 @@ class DatabaseSchemaManager:
         #     migrations.append(...)
 
         return migrations
+
+    def get_status(self) -> SchemaStatus:
+        """
+        Get current schema status.
+
+        Returns:
+            Schema status information
+        """
+        return SchemaStatus(
+            state=self.state.name,
+            current_version=self._get_schema_version(),
+            target_version=self.SCHEMA_VERSION,
+            last_migration=self.last_migration,
+            error=self.last_error,
+            initialized=self.state == SchemaState.READY,
+        )
+
+    def get_version_info(self) -> SchemaVersion:
+        """
+        Get detailed version information.
+
+        Returns:
+            Schema version information
+
+        Raises:
+            DatabaseError: If version query fails
+        """
+        try:
+            with sqlite3.connect(self.db_path) as conn:
+                cursor = conn.cursor()
+                cursor.execute(
+                    """
+                    SELECT version, last_updated, migrations_applied
+                    FROM schema_version LIMIT 1
+                    """
+                )
+                result = cursor.fetchone()
+                if result:
+                    return SchemaVersion(
+                        version=result[0],
+                        last_updated=result[1],
+                        migrations_applied=result[2].split(",") if result[2] else [],
+                    )
+                return SchemaVersion(version=0, last_updated="", migrations_applied=[])
+
+        except sqlite3.Error as e:
+            error = f"Failed to get version info: {str(e)}"
+            logger.error(error, exc_info=True)
+            raise DatabaseError(
+                error,
+                context=ErrorContext(
+                    "SchemaManager", "get_version_info", None, ErrorSeverity.HIGH
+                ),
+            )

videoarchiver/processor/__init__.py

@@ -1,45 +1,212 @@
 """Video processing module for VideoArchiver"""
 
+from typing import Dict, Any, Optional, Union, List, Tuple
+import discord
+
 from .core import VideoProcessor
-from .constants import REACTIONS
-from .progress_tracker import ProgressTracker
+from .constants import (
+    REACTIONS,
+    ReactionType,
+    ReactionEmojis,
+    ProgressEmojis,
+    get_reaction,
+    get_progress_emoji
+)
+from .url_extractor import (
+    URLExtractor,
+    URLMetadata,
+    URLPattern,
+    URLType,
+    URLPatternManager,
+    URLValidator,
+    URLMetadataExtractor
+)
+from .message_validator import (
+    MessageValidator,
+    ValidationContext,
+    ValidationRule,
+    ValidationResult,
+    ValidationRuleManager,
+    ValidationCache,
+    ValidationStats,
+    ValidationCacheEntry,
+    ValidationError
+)
 from .message_handler import MessageHandler
 from .queue_handler import QueueHandler
+from .reactions import (
+    handle_archived_reaction,
+    update_queue_position_reaction,
+    update_progress_reaction,
+    update_download_progress_reaction
+)
 
 # Export public classes and constants
 __all__ = [
+    # Core components
     "VideoProcessor",
-    "REACTIONS",
-    "ProgressTracker",
     "MessageHandler",
     "QueueHandler",
+    
+    # URL Extraction
+    "URLExtractor",
+    "URLMetadata",
+    "URLPattern",
+    "URLType",
+    "URLPatternManager",
+    "URLValidator",
+    "URLMetadataExtractor",
+    
+    # Message Validation
+    "MessageValidator",
+    "ValidationContext",
+    "ValidationRule",
+    "ValidationResult",
+    "ValidationRuleManager",
+    "ValidationCache",
+    "ValidationStats",
+    "ValidationCacheEntry",
+    "ValidationError",
+    
+    # Constants and enums
+    "REACTIONS",
+    "ReactionType",
+    "ReactionEmojis",
+    "ProgressEmojis",
+    
+    # Helper functions
+    "get_reaction",
+    "get_progress_emoji",
+    "extract_urls",
+    "validate_message",
+    "update_download_progress",
+    "complete_download",
+    "increment_download_retries",
+    "get_download_progress",
+    "get_active_operations",
+    "get_validation_stats",
+    "clear_caches",
+    
+    # Reaction handlers
+    "handle_archived_reaction",
+    "update_queue_position_reaction",
+    "update_progress_reaction",
+    "update_download_progress_reaction",
 ]
 
-# Create a shared progress tracker instance for module-level access
-progress_tracker = ProgressTracker()
+# Version information
+__version__ = "1.0.0"
+__author__ = "VideoArchiver Team"
+__description__ = "Video processing module for archiving Discord videos"
 
+# Create shared instances for module-level access
+url_extractor = URLExtractor()
+message_validator = MessageValidator()
 
-# Export progress tracking functions that wrap the instance methods
-def update_download_progress(url, progress_data):
-    """Update download progress for a specific URL"""
+# URL extraction helper functions
+async def extract_urls(
+    message: discord.Message,
+    enabled_sites: Optional[List[str]] = None
+) -> List[URLMetadata]:
+    """
+    Extract video URLs from a Discord message.
+    
+    Args:
+        message: Discord message to extract URLs from
+        enabled_sites: Optional list of enabled site identifiers
+        
+    Returns:
+        List of URLMetadata objects for extracted URLs
+    """
+    return await url_extractor.extract_urls(message, enabled_sites)
+
+async def validate_message(
+    message: discord.Message,
+    settings: Dict[str, Any]
+) -> Tuple[bool, Optional[str]]:
+    """
+    Validate a Discord message.
+    
+    Args:
+        message: Discord message to validate
+        settings: Guild settings dictionary
+        
+    Returns:
+        Tuple of (is_valid, reason)
+        
+    Raises:
+        ValidationError: If validation fails unexpectedly
+    """
+    return await message_validator.validate_message(message, settings)
+
+# Progress tracking helper functions
+def update_download_progress(url: str, progress_data: Dict[str, Any]) -> None:
+    """
+    Update download progress for a specific URL.
+    
+    Args:
+        url: The URL being downloaded
+        progress_data: Dictionary containing progress information
+    """
     progress_tracker.update_download_progress(url, progress_data)
 
-
-def complete_download(url):
-    """Mark a download as complete"""
+def complete_download(url: str) -> None:
+    """
+    Mark a download as complete.
+    
+    Args:
+        url: The URL that completed downloading
+    """
     progress_tracker.complete_download(url)
 
-
-def increment_download_retries(url):
-    """Increment retry count for a download"""
+def increment_download_retries(url: str) -> None:
+    """
+    Increment retry count for a download.
+    
+    Args:
+        url: The URL being retried
+    """
     progress_tracker.increment_download_retries(url)
 
-
-def get_download_progress(url=None):
-    """Get download progress for a specific URL or all downloads"""
+def get_download_progress(url: Optional[str] = None) -> Union[Dict[str, Any], Dict[str, Dict[str, Any]]]:
+    """
+    Get download progress for a specific URL or all downloads.
+    
+    Args:
+        url: Optional URL to get progress for. If None, returns all download progress.
+    
+    Returns:
+        Dictionary containing progress information for one or all downloads
+    """
     return progress_tracker.get_download_progress(url)
 
-
-def get_active_operations():
-    """Get all active operations"""
+def get_active_operations() -> Dict[str, Dict[str, Any]]:
+    """
+    Get all active operations.
+    
+    Returns:
+        Dictionary containing information about all active operations
+    """
     return progress_tracker.get_active_operations()
+
+def get_validation_stats() -> ValidationStats:
+    """
+    Get message validation statistics.
+    
+    Returns:
+        Dictionary containing validation statistics and rule information
+    """
+    return message_validator.get_stats()
+
+def clear_caches(message_id: Optional[int] = None) -> None:
+    """
+    Clear URL and validation caches.
+    
+    Args:
+        message_id: Optional message ID to clear caches for. If None, clears all caches.
+    """
+    url_extractor.clear_cache(message_id)
+    message_validator.clear_cache(message_id)
+
+# Initialize shared progress tracker instance
+progress_tracker = ProgressTracker()

videoarchiver/processor/cleanup_manager.py

@@ -2,25 +2,37 @@
 
 import logging
 import asyncio
-from enum import Enum
-from dataclasses import dataclass
-from typing import Optional, Dict, Any, List, Set
-from datetime import datetime
+from enum import Enum, auto
+from dataclasses import dataclass, field
+from typing import Optional, Dict, Any, List, Set, TypedDict, ClassVar, Callable, Awaitable, Tuple
+from datetime import datetime, timedelta
+
+from .queue_handler import QueueHandler
+from ..ffmpeg.ffmpeg_manager import FFmpegManager
+from ..utils.exceptions import CleanupError
 
 logger = logging.getLogger("VideoArchiver")
 
 class CleanupStage(Enum):
     """Cleanup stages"""
-    QUEUE = "queue"
-    FFMPEG = "ffmpeg"
-    TASKS = "tasks"
-    RESOURCES = "resources"
+    QUEUE = auto()
+    FFMPEG = auto()
+    TASKS = auto()
+    RESOURCES = auto()
 
 class CleanupStrategy(Enum):
     """Cleanup strategies"""
-    NORMAL = "normal"
-    FORCE = "force"
-    GRACEFUL = "graceful"
+    NORMAL = auto()
+    FORCE = auto()
+    GRACEFUL = auto()
+
+class CleanupStats(TypedDict):
+    """Type definition for cleanup statistics"""
+    total_cleanups: int
+    active_cleanups: int
+    success_rate: float
+    average_duration: float
+    stage_success_rates: Dict[str, float]
 
 @dataclass
 class CleanupResult:
@@ -29,33 +41,64 @@ class CleanupResult:
     stage: CleanupStage
     error: Optional[str] = None
     duration: float = 0.0
+    timestamp: str = field(default_factory=lambda: datetime.utcnow().isoformat())
+
+@dataclass
+class CleanupOperation:
+    """Represents a cleanup operation"""
+    stage: CleanupStage
+    func: Callable[[], Awaitable[None]]
+    force_func: Optional[Callable[[], Awaitable[None]]] = None
+    timeout: float = 30.0  # Default timeout in seconds
 
 class CleanupTracker:
     """Tracks cleanup operations"""
 
-    def __init__(self):
+    MAX_HISTORY: ClassVar[int] = 1000  # Maximum number of cleanup operations to track
+
+    def __init__(self) -> None:
         self.cleanup_history: List[Dict[str, Any]] = []
         self.active_cleanups: Set[str] = set()
         self.start_times: Dict[str, datetime] = {}
         self.stage_results: Dict[str, List[CleanupResult]] = {}
 
     def start_cleanup(self, cleanup_id: str) -> None:
-        """Start tracking a cleanup operation"""
+        """
+        Start tracking a cleanup operation.
+        
+        Args:
+            cleanup_id: Unique identifier for the cleanup operation
+        """
         self.active_cleanups.add(cleanup_id)
         self.start_times[cleanup_id] = datetime.utcnow()
         self.stage_results[cleanup_id] = []
 
+        # Cleanup old history if needed
+        if len(self.cleanup_history) >= self.MAX_HISTORY:
+            self.cleanup_history = self.cleanup_history[-self.MAX_HISTORY:]
+
     def record_stage_result(
         self,
         cleanup_id: str,
         result: CleanupResult
     ) -> None:
-        """Record result of a cleanup stage"""
+        """
+        Record result of a cleanup stage.
+        
+        Args:
+            cleanup_id: Cleanup operation identifier
+            result: Result of the cleanup stage
+        """
         if cleanup_id in self.stage_results:
             self.stage_results[cleanup_id].append(result)
 
     def end_cleanup(self, cleanup_id: str) -> None:
-        """End tracking a cleanup operation"""
+        """
+        End tracking a cleanup operation.
+        
+        Args:
+            cleanup_id: Cleanup operation identifier
+        """
         if cleanup_id in self.active_cleanups:
             end_time = datetime.utcnow()
             self.cleanup_history.append({
@@ -69,15 +112,20 @@ class CleanupTracker:
             self.start_times.pop(cleanup_id)
             self.stage_results.pop(cleanup_id)
 
-    def get_cleanup_stats(self) -> Dict[str, Any]:
-        """Get cleanup statistics"""
-        return {
-            "total_cleanups": len(self.cleanup_history),
-            "active_cleanups": len(self.active_cleanups),
-            "success_rate": self._calculate_success_rate(),
-            "average_duration": self._calculate_average_duration(),
-            "stage_success_rates": self._calculate_stage_success_rates()
-        }
+    def get_cleanup_stats(self) -> CleanupStats:
+        """
+        Get cleanup statistics.
+        
+        Returns:
+            Dictionary containing cleanup statistics
+        """
+        return CleanupStats(
+            total_cleanups=len(self.cleanup_history),
+            active_cleanups=len(self.active_cleanups),
+            success_rate=self._calculate_success_rate(),
+            average_duration=self._calculate_average_duration(),
+            stage_success_rates=self._calculate_stage_success_rates()
+        )
 
     def _calculate_success_rate(self) -> float:
         """Calculate overall cleanup success rate"""
@@ -116,20 +164,49 @@ class CleanupTracker:
 class CleanupManager:
     """Manages cleanup operations for the video processor"""
 
+    CLEANUP_TIMEOUT: ClassVar[int] = 60  # Default timeout for entire cleanup operation
+
     def __init__(
         self,
-        queue_handler,
-        ffmpeg_mgr: Optional[object] = None,
+        queue_handler: QueueHandler,
+        ffmpeg_mgr: Optional[FFmpegManager] = None,
         strategy: CleanupStrategy = CleanupStrategy.NORMAL
-    ):
+    ) -> None:
         self.queue_handler = queue_handler
         self.ffmpeg_mgr = ffmpeg_mgr
         self.strategy = strategy
         self._queue_task: Optional[asyncio.Task] = None
         self.tracker = CleanupTracker()
 
+        # Define cleanup operations
+        self.cleanup_operations: List[CleanupOperation] = [
+            CleanupOperation(
+                stage=CleanupStage.QUEUE,
+                func=self._cleanup_queue,
+                force_func=self._force_cleanup_queue,
+                timeout=30.0
+            ),
+            CleanupOperation(
+                stage=CleanupStage.FFMPEG,
+                func=self._cleanup_ffmpeg,
+                force_func=self._force_cleanup_ffmpeg,
+                timeout=15.0
+            ),
+            CleanupOperation(
+                stage=CleanupStage.TASKS,
+                func=self._cleanup_tasks,
+                force_func=self._force_cleanup_tasks,
+                timeout=15.0
+            )
+        ]
+
     async def cleanup(self) -> None:
-        """Perform normal cleanup of resources"""
+        """
+        Perform normal cleanup of resources.
+        
+        Raises:
+            CleanupError: If cleanup fails
+        """
         cleanup_id = f"cleanup_{datetime.utcnow().timestamp()}"
         self.tracker.start_cleanup(cleanup_id)
         
@@ -137,35 +214,45 @@ class CleanupManager:
             logger.info("Starting normal cleanup...")
             
             # Clean up in stages
-            stages = [
-                (CleanupStage.QUEUE, self._cleanup_queue),
-                (CleanupStage.FFMPEG, self._cleanup_ffmpeg),
-                (CleanupStage.TASKS, self._cleanup_tasks)
-            ]
-
-            for stage, cleanup_func in stages:
+            for operation in self.cleanup_operations:
                 try:
                     start_time = datetime.utcnow()
-                    await cleanup_func()
+                    await asyncio.wait_for(
+                        operation.func(),
+                        timeout=operation.timeout
+                    )
                     duration = (datetime.utcnow() - start_time).total_seconds()
                     self.tracker.record_stage_result(
                         cleanup_id,
-                        CleanupResult(True, stage, duration=duration)
+                        CleanupResult(True, operation.stage, duration=duration)
                     )
-                except Exception as e:
-                    logger.error(f"Error in {stage.value} cleanup: {e}")
+                except asyncio.TimeoutError:
+                    error = f"Cleanup stage {operation.stage.value} timed out"
+                    logger.error(error)
                     self.tracker.record_stage_result(
                         cleanup_id,
-                        CleanupResult(False, stage, str(e))
+                        CleanupResult(False, operation.stage, error)
                     )
                     if self.strategy != CleanupStrategy.GRACEFUL:
-                        raise
+                        raise CleanupError(error)
+                except Exception as e:
+                    error = f"Error in {operation.stage.value} cleanup: {e}"
+                    logger.error(error)
+                    self.tracker.record_stage_result(
+                        cleanup_id,
+                        CleanupResult(False, operation.stage, str(e))
+                    )
+                    if self.strategy != CleanupStrategy.GRACEFUL:
+                        raise CleanupError(error)
 
             logger.info("Normal cleanup completed successfully")
 
-        except Exception as e:
-            logger.error(f"Error during normal cleanup: {str(e)}", exc_info=True)
+        except CleanupError:
             raise
+        except Exception as e:
+            error = f"Unexpected error during cleanup: {str(e)}"
+            logger.error(error, exc_info=True)
+            raise CleanupError(error)
         finally:
             self.tracker.end_cleanup(cleanup_id)
 
@@ -178,26 +265,26 @@ class CleanupManager:
             logger.info("Starting force cleanup...")
 
             # Force cleanup in stages
-            stages = [
-                (CleanupStage.QUEUE, self._force_cleanup_queue),
-                (CleanupStage.FFMPEG, self._force_cleanup_ffmpeg),
-                (CleanupStage.TASKS, self._force_cleanup_tasks)
-            ]
+            for operation in self.cleanup_operations:
+                if not operation.force_func:
+                    continue
 
-            for stage, cleanup_func in stages:
                 try:
                     start_time = datetime.utcnow()
-                    await cleanup_func()
+                    await asyncio.wait_for(
+                        operation.force_func(),
+                        timeout=operation.timeout
+                    )
                     duration = (datetime.utcnow() - start_time).total_seconds()
                     self.tracker.record_stage_result(
                         cleanup_id,
-                        CleanupResult(True, stage, duration=duration)
+                        CleanupResult(True, operation.stage, duration=duration)
                     )
                 except Exception as e:
-                    logger.error(f"Error in force {stage.value} cleanup: {e}")
+                    logger.error(f"Error in force {operation.stage.value} cleanup: {e}")
                     self.tracker.record_stage_result(
                         cleanup_id,
-                        CleanupResult(False, stage, str(e))
+                        CleanupResult(False, operation.stage, str(e))
                     )
 
             logger.info("Force cleanup completed")
@@ -209,6 +296,8 @@ class CleanupManager:
 
     async def _cleanup_queue(self) -> None:
         """Clean up queue handler"""
+        if not self.queue_handler:
+            raise CleanupError("Queue handler not initialized")
         await self.queue_handler.cleanup()
 
     async def _cleanup_ffmpeg(self) -> None:
@@ -224,15 +313,22 @@ class CleanupManager:
                 await self._queue_task
             except asyncio.CancelledError:
                 pass
+            except Exception as e:
+                raise CleanupError(f"Error cleaning up queue task: {str(e)}")
 
     async def _force_cleanup_queue(self) -> None:
         """Force clean up queue handler"""
+        if not self.queue_handler:
+            raise CleanupError("Queue handler not initialized")
         await self.queue_handler.force_cleanup()
 
     async def _force_cleanup_ffmpeg(self) -> None:
         """Force clean up FFmpeg manager"""
         if self.ffmpeg_mgr:
-            self.ffmpeg_mgr.kill_all_processes()
+            try:
+                self.ffmpeg_mgr.kill_all_processes()
+            except Exception as e:
+                logger.error(f"Error force cleaning FFmpeg processes: {e}")
 
     async def _force_cleanup_tasks(self) -> None:
         """Force clean up tasks"""
@@ -240,13 +336,31 @@ class CleanupManager:
             self._queue_task.cancel()
 
     def set_queue_task(self, task: asyncio.Task) -> None:
-        """Set the queue processing task for cleanup purposes"""
+        """
+        Set the queue processing task for cleanup purposes.
+        
+        Args:
+            task: Queue processing task to track
+        """
         self._queue_task = task
 
     def get_cleanup_stats(self) -> Dict[str, Any]:
-        """Get cleanup statistics"""
+        """
+        Get cleanup statistics.
+        
+        Returns:
+            Dictionary containing cleanup statistics and status
+        """
         return {
             "stats": self.tracker.get_cleanup_stats(),
             "strategy": self.strategy.value,
-            "active_cleanups": len(self.tracker.active_cleanups)
+            "active_cleanups": len(self.tracker.active_cleanups),
+            "operations": [
+                {
+                    "stage": op.stage.value,
+                    "timeout": op.timeout,
+                    "has_force_cleanup": op.force_func is not None
+                }
+                for op in self.cleanup_operations
+            ]
         }

videoarchiver/processor/constants.py

@@ -1,13 +1,77 @@
 """Constants for VideoProcessor"""
 
-# Reaction emojis
-REACTIONS = {
-    'queued': '📹',
-    'processing': '⚙️',
-    'success': '✅',
-    'error': '❌',
-    'archived': '🔄',  # New reaction for already archived videos
-    'numbers': ['1️⃣', '2️⃣', '3️⃣', '4️⃣', '5️⃣'],
-    'progress': ['⬛', '🟨', '🟩'],
-    'download': ['0️⃣', '2️⃣', '4️⃣', '6️⃣', '8️⃣', '🔟']
+from typing import Dict, List, Union
+from dataclasses import dataclass
+from enum import Enum
+
+class ReactionType(Enum):
+    """Types of reactions used in the processor"""
+    QUEUED = 'queued'
+    PROCESSING = 'processing'
+    SUCCESS = 'success'
+    ERROR = 'error'
+    ARCHIVED = 'archived'
+    NUMBERS = 'numbers'
+    PROGRESS = 'progress'
+    DOWNLOAD = 'download'
+
+@dataclass(frozen=True)
+class ReactionEmojis:
+    """Emoji constants for different reaction types"""
+    QUEUED: str = '📹'
+    PROCESSING: str = '⚙️'
+    SUCCESS: str = '✅'
+    ERROR: str = '❌'
+    ARCHIVED: str = '🔄'
+
+@dataclass(frozen=True)
+class ProgressEmojis:
+    """Emoji sequences for progress indicators"""
+    NUMBERS: List[str] = ('1️⃣', '2️⃣', '3️⃣', '4️⃣', '5️⃣')
+    PROGRESS: List[str] = ('⬛', '🟨', '🟩')
+    DOWNLOAD: List[str] = ('0️⃣', '2️⃣', '4️⃣', '6️⃣', '8️⃣', '🔟')
+
+# Main reactions dictionary with type hints
+REACTIONS: Dict[str, Union[str, List[str]]] = {
+    ReactionType.QUEUED.value: ReactionEmojis.QUEUED,
+    ReactionType.PROCESSING.value: ReactionEmojis.PROCESSING,
+    ReactionType.SUCCESS.value: ReactionEmojis.SUCCESS,
+    ReactionType.ERROR.value: ReactionEmojis.ERROR,
+    ReactionType.ARCHIVED.value: ReactionEmojis.ARCHIVED,
+    ReactionType.NUMBERS.value: ProgressEmojis.NUMBERS,
+    ReactionType.PROGRESS.value: ProgressEmojis.PROGRESS,
+    ReactionType.DOWNLOAD.value: ProgressEmojis.DOWNLOAD
 }
+
+def get_reaction(reaction_type: Union[ReactionType, str]) -> Union[str, List[str]]:
+    """
+    Get reaction emoji(s) for a given reaction type.
+    
+    Args:
+        reaction_type: The type of reaction to get, either as ReactionType enum or string
+        
+    Returns:
+        Either a single emoji string or a list of emoji strings
+        
+    Raises:
+        KeyError: If the reaction type doesn't exist
+    """
+    key = reaction_type.value if isinstance(reaction_type, ReactionType) else reaction_type
+    return REACTIONS[key]
+
+def get_progress_emoji(progress: float, emoji_list: List[str]) -> str:
+    """
+    Get the appropriate progress emoji based on a progress value.
+    
+    Args:
+        progress: Progress value between 0 and 1
+        emoji_list: List of emojis to choose from
+        
+    Returns:
+        The emoji representing the current progress
+    """
+    if not 0 <= progress <= 1:
+        raise ValueError("Progress must be between 0 and 1")
+        
+    index = int(progress * (len(emoji_list) - 1))
+    return emoji_list[index]

videoarchiver/processor/core.py

@@ -2,43 +2,76 @@
 
 import logging
 import asyncio
-from enum import Enum
-from typing import Optional, Tuple, Dict, Any, List
-from datetime import datetime
+from enum import Enum, auto
+from typing import Optional, Tuple, Dict, Any, List, TypedDict, ClassVar
+from datetime import datetime, timedelta
 import discord
 from discord.ext import commands
 
 from .message_handler import MessageHandler
 from .queue_handler import QueueHandler
-from .progress_tracker import ProgressTracker
+from ..utils.progress_tracker import ProgressTracker
 from .status_display import StatusDisplay
-from .cleanup_manager import CleanupManager
+from .cleanup_manager import CleanupManager, CleanupStrategy
 from .constants import REACTIONS
+from ..queue.manager import EnhancedVideoQueueManager
+from ..ffmpeg.ffmpeg_manager import FFmpegManager
+from ..database.video_archive_db import VideoArchiveDB
+from ..config_manager import ConfigManager
+from ..utils.exceptions import ProcessorError
 
 logger = logging.getLogger("VideoArchiver")
 
 class ProcessorState(Enum):
     """Possible states of the video processor"""
-    INITIALIZING = "initializing"
-    READY = "ready"
-    PROCESSING = "processing"
-    PAUSED = "paused"
-    ERROR = "error"
-    SHUTDOWN = "shutdown"
+    INITIALIZING = auto()
+    READY = auto()
+    PROCESSING = auto()
+    PAUSED = auto()
+    ERROR = auto()
+    SHUTDOWN = auto()
 
 class OperationType(Enum):
     """Types of processor operations"""
-    MESSAGE_PROCESSING = "message_processing"
-    VIDEO_PROCESSING = "video_processing"
-    QUEUE_MANAGEMENT = "queue_management"
-    CLEANUP = "cleanup"
+    MESSAGE_PROCESSING = auto()
+    VIDEO_PROCESSING = auto()
+    QUEUE_MANAGEMENT = auto()
+    CLEANUP = auto()
+
+class OperationDetails(TypedDict):
+    """Type definition for operation details"""
+    type: str
+    start_time: datetime
+    end_time: Optional[datetime]
+    status: str
+    details: Dict[str, Any]
+    error: Optional[str]
+
+class OperationStats(TypedDict):
+    """Type definition for operation statistics"""
+    total_operations: int
+    active_operations: int
+    success_count: int
+    error_count: int
+    success_rate: float
+
+class ProcessorStatus(TypedDict):
+    """Type definition for processor status"""
+    state: str
+    health: bool
+    operations: OperationStats
+    active_operations: Dict[str, OperationDetails]
+    last_health_check: Optional[str]
+    health_status: Dict[str, bool]
 
 class OperationTracker:
     """Tracks processor operations"""
 
-    def __init__(self):
-        self.operations: Dict[str, Dict[str, Any]] = {}
-        self.operation_history: List[Dict[str, Any]] = []
+    MAX_HISTORY: ClassVar[int] = 1000  # Maximum number of operations to track
+
+    def __init__(self) -> None:
+        self.operations: Dict[str, OperationDetails] = {}
+        self.operation_history: List[OperationDetails] = []
         self.error_count = 0
         self.success_count = 0
 
@@ -47,14 +80,25 @@ class OperationTracker:
         op_type: OperationType,
         details: Dict[str, Any]
     ) -> str:
-        """Start tracking an operation"""
+        """
+        Start tracking an operation.
+        
+        Args:
+            op_type: Type of operation
+            details: Operation details
+            
+        Returns:
+            Operation ID string
+        """
         op_id = f"{op_type.value}_{datetime.utcnow().timestamp()}"
-        self.operations[op_id] = {
-            "type": op_type.value,
-            "start_time": datetime.utcnow(),
-            "status": "running",
-            "details": details
-        }
+        self.operations[op_id] = OperationDetails(
+            type=op_type.value,
+            start_time=datetime.utcnow(),
+            end_time=None,
+            status="running",
+            details=details,
+            error=None
+        )
         return op_id
 
     def end_operation(
@@ -63,7 +107,14 @@ class OperationTracker:
         success: bool,
         error: Optional[str] = None
     ) -> None:
-        """End tracking an operation"""
+        """
+        End tracking an operation.
+        
+        Args:
+            op_id: Operation ID
+            success: Whether operation succeeded
+            error: Optional error message
+        """
         if op_id in self.operations:
             self.operations[op_id].update({
                 "end_time": datetime.utcnow(),
@@ -78,28 +129,43 @@ class OperationTracker:
             else:
                 self.error_count += 1
 
-    def get_active_operations(self) -> Dict[str, Dict[str, Any]]:
-        """Get currently active operations"""
+            # Cleanup old history if needed
+            if len(self.operation_history) > self.MAX_HISTORY:
+                self.operation_history = self.operation_history[-self.MAX_HISTORY:]
+
+    def get_active_operations(self) -> Dict[str, OperationDetails]:
+        """
+        Get currently active operations.
+        
+        Returns:
+            Dictionary of active operations
+        """
         return self.operations.copy()
 
-    def get_operation_stats(self) -> Dict[str, Any]:
-        """Get operation statistics"""
-        return {
-            "total_operations": len(self.operation_history) + len(self.operations),
-            "active_operations": len(self.operations),
-            "success_count": self.success_count,
-            "error_count": self.error_count,
-            "success_rate": (
-                self.success_count / (self.success_count + self.error_count)
-                if (self.success_count + self.error_count) > 0
-                else 0
-            )
-        }
+    def get_operation_stats(self) -> OperationStats:
+        """
+        Get operation statistics.
+        
+        Returns:
+            Dictionary containing operation statistics
+        """
+        total = self.success_count + self.error_count
+        return OperationStats(
+            total_operations=len(self.operation_history) + len(self.operations),
+            active_operations=len(self.operations),
+            success_count=self.success_count,
+            error_count=self.error_count,
+            success_rate=self.success_count / total if total > 0 else 0.0
+        )
 
 class HealthMonitor:
     """Monitors processor health"""
 
-    def __init__(self, processor: 'VideoProcessor'):
+    HEALTH_CHECK_INTERVAL: ClassVar[int] = 60  # Seconds between health checks
+    ERROR_CHECK_INTERVAL: ClassVar[int] = 30  # Seconds between checks after error
+    SUCCESS_RATE_THRESHOLD: ClassVar[float] = 0.9  # 90% success rate threshold
+
+    def __init__(self, processor: 'VideoProcessor') -> None:
         self.processor = processor
         self.last_check: Optional[datetime] = None
         self.health_status: Dict[str, bool] = {}
@@ -117,6 +183,8 @@ class HealthMonitor:
                 await self._monitor_task
             except asyncio.CancelledError:
                 pass
+            except Exception as e:
+                logger.error(f"Error stopping health monitor: {e}")
 
     async def _monitor_health(self) -> None:
         """Monitor processor health"""
@@ -134,17 +202,22 @@ class HealthMonitor:
                 # Check operation health
                 op_stats = self.processor.operation_tracker.get_operation_stats()
                 self.health_status["operations"] = (
-                    op_stats["success_rate"] >= 0.9  # 90% success rate threshold
+                    op_stats["success_rate"] >= self.SUCCESS_RATE_THRESHOLD
                 )
 
-                await asyncio.sleep(60)  # Check every minute
+                await asyncio.sleep(self.HEALTH_CHECK_INTERVAL)
 
             except Exception as e:
-                logger.error(f"Health monitoring error: {e}")
-                await asyncio.sleep(30)  # Shorter interval on error
+                logger.error(f"Health monitoring error: {e}", exc_info=True)
+                await asyncio.sleep(self.ERROR_CHECK_INTERVAL)
 
     def is_healthy(self) -> bool:
-        """Check if processor is healthy"""
+        """
+        Check if processor is healthy.
+        
+        Returns:
+            True if all components are healthy, False otherwise
+        """
         return all(self.health_status.values())
 
 class VideoProcessor:
@@ -152,13 +225,13 @@ class VideoProcessor:
 
     def __init__(
         self,
-        bot,
-        config_manager,
-        components,
-        queue_manager=None,
-        ffmpeg_mgr=None,
-        db=None
-    ):
+        bot: commands.Bot,
+        config_manager: ConfigManager,
+        components: Dict[int, Dict[str, Any]],
+        queue_manager: Optional[EnhancedVideoQueueManager] = None,
+        ffmpeg_mgr: Optional[FFmpegManager] = None,
+        db: Optional[VideoArchiveDB] = None
+    ) -> None:
         self.bot = bot
         self.config = config_manager
         self.components = components
@@ -171,29 +244,61 @@ class VideoProcessor:
         self.operation_tracker = OperationTracker()
         self.health_monitor = HealthMonitor(self)
 
-        # Initialize handlers
-        self.queue_handler = QueueHandler(bot, config_manager, components)
-        self.message_handler = MessageHandler(bot, config_manager, queue_manager)
-        self.progress_tracker = ProgressTracker()
-        self.cleanup_manager = CleanupManager(self.queue_handler, ffmpeg_mgr)
+        try:
+            # Initialize handlers
+            self.queue_handler = QueueHandler(bot, config_manager, components)
+            self.message_handler = MessageHandler(bot, config_manager, queue_manager)
+            self.progress_tracker = ProgressTracker()
+            self.cleanup_manager = CleanupManager(
+                self.queue_handler,
+                ffmpeg_mgr,
+                CleanupStrategy.NORMAL
+            )
 
-        # Pass db to queue handler if it exists
-        if self.db:
-            self.queue_handler.db = self.db
+            # Pass db to queue handler if it exists
+            if self.db:
+                self.queue_handler.db = self.db
 
-        # Store queue task reference
-        self._queue_task = None
-        
-        # Mark as ready
-        self.state = ProcessorState.READY
-        logger.info("VideoProcessor initialized successfully")
+            # Store queue task reference
+            self._queue_task: Optional[asyncio.Task] = None
+            
+            # Mark as ready
+            self.state = ProcessorState.READY
+            logger.info("VideoProcessor initialized successfully")
+
+        except Exception as e:
+            self.state = ProcessorState.ERROR
+            logger.error(f"Error initializing VideoProcessor: {e}", exc_info=True)
+            raise ProcessorError(f"Failed to initialize processor: {str(e)}")
 
     async def start(self) -> None:
-        """Start processor operations"""
-        await self.health_monitor.start_monitoring()
+        """
+        Start processor operations.
+        
+        Raises:
+            ProcessorError: If startup fails
+        """
+        try:
+            await self.health_monitor.start_monitoring()
+            logger.info("VideoProcessor started successfully")
+        except Exception as e:
+            error = f"Failed to start processor: {str(e)}"
+            logger.error(error, exc_info=True)
+            raise ProcessorError(error)
 
-    async def process_video(self, item) -> Tuple[bool, Optional[str]]:
-        """Process a video from the queue"""
+    async def process_video(self, item: Any) -> Tuple[bool, Optional[str]]:
+        """
+        Process a video from the queue.
+        
+        Args:
+            item: Queue item to process
+            
+        Returns:
+            Tuple of (success, error_message)
+            
+        Raises:
+            ProcessorError: If processing fails
+        """
         op_id = self.operation_tracker.start_operation(
             OperationType.VIDEO_PROCESSING,
             {"item": str(item)}
@@ -207,13 +312,23 @@ class VideoProcessor:
             self.operation_tracker.end_operation(op_id, success, error)
             return result
         except Exception as e:
-            self.operation_tracker.end_operation(op_id, False, str(e))
-            raise
+            error = f"Video processing failed: {str(e)}"
+            self.operation_tracker.end_operation(op_id, False, error)
+            logger.error(error, exc_info=True)
+            raise ProcessorError(error)
         finally:
             self.state = ProcessorState.READY
 
     async def process_message(self, message: discord.Message) -> None:
-        """Process a message for video content"""
+        """
+        Process a message for video content.
+        
+        Args:
+            message: Discord message to process
+            
+        Raises:
+            ProcessorError: If processing fails
+        """
         op_id = self.operation_tracker.start_operation(
             OperationType.MESSAGE_PROCESSING,
             {"message_id": message.id}
@@ -223,11 +338,18 @@ class VideoProcessor:
             await self.message_handler.process_message(message)
             self.operation_tracker.end_operation(op_id, True)
         except Exception as e:
-            self.operation_tracker.end_operation(op_id, False, str(e))
-            raise
+            error = f"Message processing failed: {str(e)}"
+            self.operation_tracker.end_operation(op_id, False, error)
+            logger.error(error, exc_info=True)
+            raise ProcessorError(error)
 
     async def cleanup(self) -> None:
-        """Clean up resources and stop processing"""
+        """
+        Clean up resources and stop processing.
+        
+        Raises:
+            ProcessorError: If cleanup fails
+        """
         op_id = self.operation_tracker.start_operation(
             OperationType.CLEANUP,
             {"type": "normal"}
@@ -239,12 +361,18 @@ class VideoProcessor:
             await self.cleanup_manager.cleanup()
             self.operation_tracker.end_operation(op_id, True)
         except Exception as e:
-            self.operation_tracker.end_operation(op_id, False, str(e))
-            logger.error(f"Error during cleanup: {e}", exc_info=True)
-            raise
+            error = f"Cleanup failed: {str(e)}"
+            self.operation_tracker.end_operation(op_id, False, error)
+            logger.error(error, exc_info=True)
+            raise ProcessorError(error)
 
     async def force_cleanup(self) -> None:
-        """Force cleanup of resources"""
+        """
+        Force cleanup of resources.
+        
+        Raises:
+            ProcessorError: If force cleanup fails
+        """
         op_id = self.operation_tracker.start_operation(
             OperationType.CLEANUP,
             {"type": "force"}
@@ -256,11 +384,18 @@ class VideoProcessor:
             await self.cleanup_manager.force_cleanup()
             self.operation_tracker.end_operation(op_id, True)
         except Exception as e:
-            self.operation_tracker.end_operation(op_id, False, str(e))
-            raise
+            error = f"Force cleanup failed: {str(e)}"
+            self.operation_tracker.end_operation(op_id, False, error)
+            logger.error(error, exc_info=True)
+            raise ProcessorError(error)
 
     async def show_queue_details(self, ctx: commands.Context) -> None:
-        """Display detailed queue status"""
+        """
+        Display detailed queue status.
+        
+        Args:
+            ctx: Command context
+        """
         try:
             if not self.queue_manager:
                 await ctx.send("Queue manager is not initialized.")
@@ -280,25 +415,36 @@ class VideoProcessor:
             await ctx.send(embed=embed)
 
         except Exception as e:
-            logger.error(f"Error showing queue details: {e}", exc_info=True)
+            error = f"Failed to show queue details: {str(e)}"
+            logger.error(error, exc_info=True)
             await ctx.send(f"Error getting queue details: {str(e)}")
 
     def set_queue_task(self, task: asyncio.Task) -> None:
-        """Set the queue processing task"""
+        """
+        Set the queue processing task.
+        
+        Args:
+            task: Queue processing task
+        """
         self._queue_task = task
         self.cleanup_manager.set_queue_task(task)
 
-    def get_status(self) -> Dict[str, Any]:
-        """Get processor status"""
-        return {
-            "state": self.state.value,
-            "health": self.health_monitor.is_healthy(),
-            "operations": self.operation_tracker.get_operation_stats(),
-            "active_operations": self.operation_tracker.get_active_operations(),
-            "last_health_check": (
+    def get_status(self) -> ProcessorStatus:
+        """
+        Get processor status.
+        
+        Returns:
+            Dictionary containing processor status information
+        """
+        return ProcessorStatus(
+            state=self.state.value,
+            health=self.health_monitor.is_healthy(),
+            operations=self.operation_tracker.get_operation_stats(),
+            active_operations=self.operation_tracker.get_active_operations(),
+            last_health_check=(
                 self.health_monitor.last_check.isoformat()
                 if self.health_monitor.last_check
                 else None
             ),
-            "health_status": self.health_monitor.health_status
-        }
+            health_status=self.health_monitor.health_status
+        )

videoarchiver/processor/message_handler.py

@@ -2,52 +2,85 @@
 
 import logging
 import asyncio
-from enum import Enum
-from typing import Optional, Dict, Any, List, Tuple
-from datetime import datetime
+from enum import Enum, auto
+from typing import Optional, Dict, Any, List, Tuple, Set, TypedDict, ClassVar
+from datetime import datetime, timedelta
 import discord
+from discord.ext import commands
 
-from .url_extractor import URLExtractor
-from .message_validator import MessageValidator
-from .queue_processor import QueueProcessor
+from .url_extractor import URLExtractor, URLMetadata
+from .message_validator import MessageValidator, ValidationError
+from .queue_processor import QueueProcessor, QueuePriority
 from .constants import REACTIONS
+from ..queue.manager import EnhancedVideoQueueManager
+from ..config_manager import ConfigManager
+from ..utils.exceptions import MessageHandlerError
 
 logger = logging.getLogger("VideoArchiver")
 
 class MessageState(Enum):
     """Possible states of message processing"""
-    RECEIVED = "received"
-    VALIDATING = "validating"
-    EXTRACTING = "extracting"
-    PROCESSING = "processing"
-    COMPLETED = "completed"
-    FAILED = "failed"
-    IGNORED = "ignored"
+    RECEIVED = auto()
+    VALIDATING = auto()
+    EXTRACTING = auto()
+    PROCESSING = auto()
+    COMPLETED = auto()
+    FAILED = auto()
+    IGNORED = auto()
 
 class ProcessingStage(Enum):
     """Message processing stages"""
-    VALIDATION = "validation"
-    EXTRACTION = "extraction"
-    QUEUEING = "queueing"
-    COMPLETION = "completion"
+    VALIDATION = auto()
+    EXTRACTION = auto()
+    QUEUEING = auto()
+    COMPLETION = auto()
+
+class MessageCacheEntry(TypedDict):
+    """Type definition for message cache entry"""
+    valid: bool
+    reason: Optional[str]
+    timestamp: str
+
+class MessageStatus(TypedDict):
+    """Type definition for message status"""
+    state: Optional[MessageState]
+    stage: Optional[ProcessingStage]
+    error: Optional[str]
+    start_time: Optional[datetime]
+    end_time: Optional[datetime]
+    duration: Optional[float]
 
 class MessageCache:
     """Caches message validation results"""
 
-    def __init__(self, max_size: int = 1000):
+    def __init__(self, max_size: int = 1000) -> None:
         self.max_size = max_size
-        self._cache: Dict[int, Dict[str, Any]] = {}
+        self._cache: Dict[int, MessageCacheEntry] = {}
         self._access_times: Dict[int, datetime] = {}
 
-    def add(self, message_id: int, result: Dict[str, Any]) -> None:
-        """Add a result to cache"""
+    def add(self, message_id: int, result: MessageCacheEntry) -> None:
+        """
+        Add a result to cache.
+        
+        Args:
+            message_id: Discord message ID
+            result: Validation result entry
+        """
         if len(self._cache) >= self.max_size:
             self._cleanup_oldest()
         self._cache[message_id] = result
         self._access_times[message_id] = datetime.utcnow()
 
-    def get(self, message_id: int) -> Optional[Dict[str, Any]]:
-        """Get a cached result"""
+    def get(self, message_id: int) -> Optional[MessageCacheEntry]:
+        """
+        Get a cached result.
+        
+        Args:
+            message_id: Discord message ID
+            
+        Returns:
+            Cached validation entry or None if not found
+        """
         if message_id in self._cache:
             self._access_times[message_id] = datetime.utcnow()
             return self._cache[message_id]
@@ -64,7 +97,9 @@ class MessageCache:
 class ProcessingTracker:
     """Tracks message processing state and progress"""
 
-    def __init__(self):
+    MAX_PROCESSING_TIME: ClassVar[int] = 300  # 5 minutes in seconds
+
+    def __init__(self) -> None:
         self.states: Dict[int, MessageState] = {}
         self.stages: Dict[int, ProcessingStage] = {}
         self.errors: Dict[int, str] = {}
@@ -72,7 +107,12 @@ class ProcessingTracker:
         self.end_times: Dict[int, datetime] = {}
 
     def start_processing(self, message_id: int) -> None:
-        """Start tracking a message"""
+        """
+        Start tracking a message.
+        
+        Args:
+            message_id: Discord message ID
+        """
         self.states[message_id] = MessageState.RECEIVED
         self.start_times[message_id] = datetime.utcnow()
 
@@ -83,7 +123,15 @@ class ProcessingTracker:
         stage: Optional[ProcessingStage] = None,
         error: Optional[str] = None
     ) -> None:
-        """Update message state"""
+        """
+        Update message state.
+        
+        Args:
+            message_id: Discord message ID
+            state: New message state
+            stage: Optional processing stage
+            error: Optional error message
+        """
         self.states[message_id] = state
         if stage:
             self.stages[message_id] = stage
@@ -92,25 +140,61 @@ class ProcessingTracker:
         if state in (MessageState.COMPLETED, MessageState.FAILED, MessageState.IGNORED):
             self.end_times[message_id] = datetime.utcnow()
 
-    def get_status(self, message_id: int) -> Dict[str, Any]:
-        """Get processing status for a message"""
-        return {
-            "state": self.states.get(message_id),
-            "stage": self.stages.get(message_id),
-            "error": self.errors.get(message_id),
-            "start_time": self.start_times.get(message_id),
-            "end_time": self.end_times.get(message_id),
-            "duration": (
-                (self.end_times[message_id] - self.start_times[message_id]).total_seconds()
-                if message_id in self.end_times and message_id in self.start_times
+    def get_status(self, message_id: int) -> MessageStatus:
+        """
+        Get processing status for a message.
+        
+        Args:
+            message_id: Discord message ID
+            
+        Returns:
+            Dictionary containing message status information
+        """
+        end_time = self.end_times.get(message_id)
+        start_time = self.start_times.get(message_id)
+        
+        return MessageStatus(
+            state=self.states.get(message_id),
+            stage=self.stages.get(message_id),
+            error=self.errors.get(message_id),
+            start_time=start_time,
+            end_time=end_time,
+            duration=(
+                (end_time - start_time).total_seconds()
+                if end_time and start_time
                 else None
             )
-        }
+        )
+
+    def is_message_stuck(self, message_id: int) -> bool:
+        """
+        Check if a message is stuck in processing.
+        
+        Args:
+            message_id: Discord message ID
+            
+        Returns:
+            True if message is stuck, False otherwise
+        """
+        if message_id not in self.states or message_id not in self.start_times:
+            return False
+            
+        state = self.states[message_id]
+        if state in (MessageState.COMPLETED, MessageState.FAILED, MessageState.IGNORED):
+            return False
+            
+        processing_time = (datetime.utcnow() - self.start_times[message_id]).total_seconds()
+        return processing_time > self.MAX_PROCESSING_TIME
 
 class MessageHandler:
     """Handles processing of messages for video content"""
 
-    def __init__(self, bot, config_manager, queue_manager):
+    def __init__(
+        self,
+        bot: discord.Client,
+        config_manager: ConfigManager,
+        queue_manager: EnhancedVideoQueueManager
+    ) -> None:
         self.bot = bot
         self.config_manager = config_manager
         self.url_extractor = URLExtractor()
@@ -123,7 +207,15 @@ class MessageHandler:
         self._processing_lock = asyncio.Lock()
 
     async def process_message(self, message: discord.Message) -> None:
-        """Process a message for video content"""
+        """
+        Process a message for video content.
+        
+        Args:
+            message: Discord message to process
+            
+        Raises:
+            MessageHandlerError: If there's an error during processing
+        """
         # Start tracking
         self.tracker.start_processing(message.id)
 
@@ -139,11 +231,19 @@ class MessageHandler:
             )
             try:
                 await message.add_reaction(REACTIONS["error"])
-            except:
-                pass
+            except Exception as react_error:
+                logger.error(f"Failed to add error reaction: {react_error}")
 
     async def _process_message_internal(self, message: discord.Message) -> None:
-        """Internal message processing logic"""
+        """
+        Internal message processing logic.
+        
+        Args:
+            message: Discord message to process
+            
+        Raises:
+            MessageHandlerError: If there's an error during processing
+        """
         try:
             # Get guild settings
             settings = await self.config_manager.get_guild_settings(message.guild.id)
@@ -164,15 +264,19 @@ class MessageHandler:
                     MessageState.VALIDATING,
                     ProcessingStage.VALIDATION
                 )
-                is_valid, reason = await self.message_validator.validate_message(
-                    message,
-                    settings
-                )
-                # Cache result
-                self.validation_cache.add(message.id, {
-                    "valid": is_valid,
-                    "reason": reason
-                })
+                try:
+                    is_valid, reason = await self.message_validator.validate_message(
+                        message,
+                        settings
+                    )
+                    # Cache result
+                    self.validation_cache.add(message.id, MessageCacheEntry(
+                        valid=is_valid,
+                        reason=reason,
+                        timestamp=datetime.utcnow().isoformat()
+                    ))
+                except ValidationError as e:
+                    raise MessageHandlerError(f"Validation failed: {str(e)}")
 
             if not is_valid:
                 logger.debug(f"Message validation failed: {reason}")
@@ -189,14 +293,17 @@ class MessageHandler:
                 MessageState.EXTRACTING,
                 ProcessingStage.EXTRACTION
             )
-            urls = await self.url_extractor.extract_urls(
-                message,
-                enabled_sites=settings.get("enabled_sites")
-            )
-            if not urls:
-                logger.debug("No valid URLs found in message")
-                self.tracker.update_state(message.id, MessageState.IGNORED)
-                return
+            try:
+                urls: List[URLMetadata] = await self.url_extractor.extract_urls(
+                    message,
+                    enabled_sites=settings.get("enabled_sites")
+                )
+                if not urls:
+                    logger.debug("No valid URLs found in message")
+                    self.tracker.update_state(message.id, MessageState.IGNORED)
+                    return
+            except Exception as e:
+                raise MessageHandlerError(f"URL extraction failed: {str(e)}")
 
             # Process URLs
             self.tracker.update_state(
@@ -204,7 +311,14 @@ class MessageHandler:
                 MessageState.PROCESSING,
                 ProcessingStage.QUEUEING
             )
-            await self.queue_processor.process_urls(message, urls)
+            try:
+                await self.queue_processor.process_urls(
+                    message,
+                    urls,
+                    priority=QueuePriority.NORMAL
+                )
+            except Exception as e:
+                raise MessageHandlerError(f"Queue processing failed: {str(e)}")
 
             # Mark completion
             self.tracker.update_state(
@@ -213,13 +327,10 @@ class MessageHandler:
                 ProcessingStage.COMPLETION
             )
 
-        except Exception as e:
-            self.tracker.update_state(
-                message.id,
-                MessageState.FAILED,
-                error=str(e)
-            )
+        except MessageHandlerError:
             raise
+        except Exception as e:
+            raise MessageHandlerError(f"Unexpected error: {str(e)}")
 
     async def format_archive_message(
         self,
@@ -227,30 +338,49 @@ class MessageHandler:
         channel: discord.TextChannel,
         url: str
     ) -> str:
-        """Format message for archive channel"""
+        """
+        Format message for archive channel.
+        
+        Args:
+            author: Optional message author
+            channel: Channel the message was posted in
+            url: URL being archived
+            
+        Returns:
+            Formatted message string
+        """
         return await self.queue_processor.format_archive_message(
             author,
             channel,
             url
         )
 
-    def get_message_status(self, message_id: int) -> Dict[str, Any]:
-        """Get processing status for a message"""
+    def get_message_status(self, message_id: int) -> MessageStatus:
+        """
+        Get processing status for a message.
+        
+        Args:
+            message_id: Discord message ID
+            
+        Returns:
+            Dictionary containing message status information
+        """
         return self.tracker.get_status(message_id)
 
     def is_healthy(self) -> bool:
-        """Check if handler is healthy"""
-        # Check for any stuck messages
-        current_time = datetime.utcnow()
-        for message_id, start_time in self.tracker.start_times.items():
-            if (
-                message_id in self.tracker.states and
-                self.tracker.states[message_id] not in (
-                    MessageState.COMPLETED,
-                    MessageState.FAILED,
-                    MessageState.IGNORED
-                ) and
-                (current_time - start_time).total_seconds() > 300  # 5 minutes timeout
-            ):
-                return False
-        return True
+        """
+        Check if handler is healthy.
+        
+        Returns:
+            True if handler is healthy, False otherwise
+        """
+        try:
+            # Check for any stuck messages
+            for message_id in self.tracker.states:
+                if self.tracker.is_message_stuck(message_id):
+                    logger.warning(f"Message {message_id} appears to be stuck in processing")
+                    return False
+            return True
+        except Exception as e:
+            logger.error(f"Error checking health: {e}")
+            return False

videoarchiver/processor/message_validator.py

@@ -1,19 +1,36 @@
 """Message validation functionality for video processing"""
 
 import logging
-from enum import Enum
-from dataclasses import dataclass
-from typing import Dict, Optional, Tuple, List, Any, Callable, Set
+from enum import Enum, auto
+from dataclasses import dataclass, field
+from typing import Dict, Optional, Tuple, List, Any, Callable, Set, TypedDict, ClassVar
 from datetime import datetime
 import discord
 
+from ..utils.exceptions import ValidationError
+
 logger = logging.getLogger("VideoArchiver")
 
 class ValidationResult(Enum):
     """Possible validation results"""
-    VALID = "valid"
-    INVALID = "invalid"
-    IGNORED = "ignored"
+    VALID = auto()
+    INVALID = auto()
+    IGNORED = auto()
+
+class ValidationStats(TypedDict):
+    """Type definition for validation statistics"""
+    total: int
+    valid: int
+    invalid: int
+    ignored: int
+    cached: int
+
+class ValidationCacheEntry(TypedDict):
+    """Type definition for validation cache entry"""
+    valid: bool
+    reason: Optional[str]
+    rule: Optional[str]
+    timestamp: str
 
 @dataclass
 class ValidationContext:
@@ -28,22 +45,43 @@ class ValidationContext:
     attachment_count: int
     is_bot: bool
     timestamp: datetime
+    validation_time: str = field(default_factory=lambda: datetime.utcnow().isoformat())
 
     @classmethod
     def from_message(cls, message: discord.Message, settings: Dict[str, Any]) -> 'ValidationContext':
-        """Create context from message"""
-        return cls(
-            message=message,
-            settings=settings,
-            guild_id=message.guild.id,
-            channel_id=message.channel.id,
-            author_id=message.author.id,
-            roles={role.id for role in message.author.roles},
-            content_length=len(message.content) if message.content else 0,
-            attachment_count=len(message.attachments),
-            is_bot=message.author.bot,
-            timestamp=message.created_at
-        )
+        """
+        Create context from message.
+        
+        Args:
+            message: Discord message to validate
+            settings: Guild settings dictionary
+            
+        Returns:
+            ValidationContext instance
+            
+        Raises:
+            ValidationError: If message or settings are invalid
+        """
+        if not message.guild:
+            raise ValidationError("Message must be from a guild")
+        if not settings:
+            raise ValidationError("Settings dictionary cannot be empty")
+
+        try:
+            return cls(
+                message=message,
+                settings=settings,
+                guild_id=message.guild.id,
+                channel_id=message.channel.id,
+                author_id=message.author.id,
+                roles={role.id for role in message.author.roles},
+                content_length=len(message.content) if message.content else 0,
+                attachment_count=len(message.attachments),
+                is_bot=message.author.bot,
+                timestamp=message.created_at
+            )
+        except Exception as e:
+            raise ValidationError(f"Failed to create validation context: {str(e)}")
 
 @dataclass
 class ValidationRule:
@@ -53,24 +91,48 @@ class ValidationRule:
     validate: Callable[[ValidationContext], Tuple[bool, Optional[str]]]
     enabled: bool = True
     priority: int = 0
+    error_count: int = field(default=0)
+    last_error: Optional[str] = field(default=None)
+    last_run: Optional[str] = field(default=None)
+
+    def __post_init__(self) -> None:
+        """Validate rule after initialization"""
+        if not callable(self.validate):
+            raise ValueError("Validate must be a callable")
+        if self.priority < 0:
+            raise ValueError("Priority must be non-negative")
 
 class ValidationCache:
     """Caches validation results"""
 
-    def __init__(self, max_size: int = 1000):
+    def __init__(self, max_size: int = 1000) -> None:
         self.max_size = max_size
-        self._cache: Dict[int, Dict[str, Any]] = {}
+        self._cache: Dict[int, ValidationCacheEntry] = {}
         self._access_times: Dict[int, datetime] = {}
 
-    def add(self, message_id: int, result: Dict[str, Any]) -> None:
-        """Add validation result to cache"""
+    def add(self, message_id: int, result: ValidationCacheEntry) -> None:
+        """
+        Add validation result to cache.
+        
+        Args:
+            message_id: Discord message ID
+            result: Validation result entry
+        """
         if len(self._cache) >= self.max_size:
             self._cleanup_oldest()
         self._cache[message_id] = result
         self._access_times[message_id] = datetime.utcnow()
 
-    def get(self, message_id: int) -> Optional[Dict[str, Any]]:
-        """Get cached validation result"""
+    def get(self, message_id: int) -> Optional[ValidationCacheEntry]:
+        """
+        Get cached validation result.
+        
+        Args:
+            message_id: Discord message ID
+            
+        Returns:
+            Cached validation entry or None if not found
+        """
         if message_id in self._cache:
             self._access_times[message_id] = datetime.utcnow()
             return self._cache[message_id]
@@ -87,33 +149,28 @@ class ValidationCache:
 class ValidationRuleManager:
     """Manages validation rules"""
 
-    def __init__(self):
-        self.rules: List[ValidationRule] = [
-            ValidationRule(
-                name="content_check",
-                description="Check if message has content to process",
-                validate=self._validate_content,
-                priority=1
-            ),
-            ValidationRule(
-                name="guild_enabled",
-                description="Check if archiving is enabled for guild",
-                validate=self._validate_guild_enabled,
-                priority=2
-            ),
-            ValidationRule(
-                name="channel_enabled",
-                description="Check if channel is enabled for archiving",
-                validate=self._validate_channel,
-                priority=3
-            ),
-            ValidationRule(
-                name="user_roles",
-                description="Check if user has required roles",
-                validate=self._validate_user_roles,
-                priority=4
-            )
-        ]
+    DEFAULT_RULES: ClassVar[List[Tuple[str, str, int]]] = [
+        ("content_check", "Check if message has content to process", 1),
+        ("guild_enabled", "Check if archiving is enabled for guild", 2),
+        ("channel_enabled", "Check if channel is enabled for archiving", 3),
+        ("user_roles", "Check if user has required roles", 4)
+    ]
+
+    def __init__(self) -> None:
+        self.rules: List[ValidationRule] = []
+        self._initialize_rules()
+
+    def _initialize_rules(self) -> None:
+        """Initialize default validation rules"""
+        for name, description, priority in self.DEFAULT_RULES:
+            validate_method = getattr(self, f"_validate_{name}", None)
+            if validate_method:
+                self.rules.append(ValidationRule(
+                    name=name,
+                    description=description,
+                    validate=validate_method,
+                    priority=priority
+                ))
         self.rules.sort(key=lambda x: x.priority)
 
     def _validate_content(self, ctx: ValidationContext) -> Tuple[bool, Optional[str]]:
@@ -145,10 +202,10 @@ class ValidationRuleManager:
 class MessageValidator:
     """Handles validation of messages for video processing"""
 
-    def __init__(self):
+    def __init__(self) -> None:
         self.rule_manager = ValidationRuleManager()
         self.cache = ValidationCache()
-        self.validation_stats: Dict[str, int] = {
+        self.validation_stats: ValidationStats = {
             "total": 0,
             "valid": 0,
             "invalid": 0,
@@ -159,50 +216,80 @@ class MessageValidator:
     async def validate_message(
         self,
         message: discord.Message,
-        settings: Dict
+        settings: Dict[str, Any]
     ) -> Tuple[bool, Optional[str]]:
-        """Validate if a message should be processed"""
-        self.validation_stats["total"] += 1
+        """
+        Validate if a message should be processed.
+        
+        Args:
+            message: Discord message to validate
+            settings: Guild settings dictionary
+            
+        Returns:
+            Tuple of (is_valid, reason)
+            
+        Raises:
+            ValidationError: If validation fails unexpectedly
+        """
+        try:
+            self.validation_stats["total"] += 1
 
-        # Check cache
-        cached = self.cache.get(message.id)
-        if cached:
-            self.validation_stats["cached"] += 1
-            return cached["valid"], cached.get("reason")
+            # Check cache
+            cached = self.cache.get(message.id)
+            if cached:
+                self.validation_stats["cached"] += 1
+                return cached["valid"], cached.get("reason")
 
-        # Create validation context
-        ctx = ValidationContext.from_message(message, settings)
+            # Create validation context
+            ctx = ValidationContext.from_message(message, settings)
 
-        # Run validation rules
-        for rule in self.rule_manager.rules:
-            if not rule.enabled:
-                continue
+            # Run validation rules
+            for rule in self.rule_manager.rules:
+                if not rule.enabled:
+                    continue
 
-            try:
-                valid, reason = rule.validate(ctx)
-                if not valid:
-                    self.validation_stats["invalid"] += 1
-                    # Cache result
-                    self.cache.add(message.id, {
-                        "valid": False,
-                        "reason": reason,
-                        "rule": rule.name
-                    })
-                    return False, reason
-            except Exception as e:
-                logger.error(f"Error in validation rule {rule.name}: {e}")
-                return False, f"Validation error: {str(e)}"
+                try:
+                    rule.last_run = datetime.utcnow().isoformat()
+                    valid, reason = rule.validate(ctx)
+                    if not valid:
+                        self.validation_stats["invalid"] += 1
+                        # Cache result
+                        self.cache.add(message.id, ValidationCacheEntry(
+                            valid=False,
+                            reason=reason,
+                            rule=rule.name,
+                            timestamp=datetime.utcnow().isoformat()
+                        ))
+                        return False, reason
+                except Exception as e:
+                    rule.error_count += 1
+                    rule.last_error = str(e)
+                    logger.error(f"Error in validation rule {rule.name}: {e}", exc_info=True)
+                    raise ValidationError(f"Validation rule {rule.name} failed: {str(e)}")
 
-        # Message passed all rules
-        self.validation_stats["valid"] += 1
-        self.cache.add(message.id, {
-            "valid": True,
-            "reason": None
-        })
-        return True, None
+            # Message passed all rules
+            self.validation_stats["valid"] += 1
+            self.cache.add(message.id, ValidationCacheEntry(
+                valid=True,
+                reason=None,
+                rule=None,
+                timestamp=datetime.utcnow().isoformat()
+            ))
+            return True, None
+
+        except ValidationError:
+            raise
+        except Exception as e:
+            logger.error(f"Unexpected error in message validation: {e}", exc_info=True)
+            raise ValidationError(f"Validation failed: {str(e)}")
 
     def get_stats(self) -> Dict[str, Any]:
-        """Get validation statistics"""
+        """
+        Get validation statistics.
+        
+        Returns:
+            Dictionary containing validation statistics and rule information
+        """
         return {
             "validation_stats": self.validation_stats.copy(),
             "rules": [
@@ -210,16 +297,27 @@ class MessageValidator:
                     "name": rule.name,
                     "description": rule.description,
                     "enabled": rule.enabled,
-                    "priority": rule.priority
+                    "priority": rule.priority,
+                    "error_count": rule.error_count,
+                    "last_error": rule.last_error,
+                    "last_run": rule.last_run
                 }
                 for rule in self.rule_manager.rules
             ]
         }
 
     def clear_cache(self, message_id: Optional[int] = None) -> None:
-        """Clear validation cache"""
-        if message_id:
-            self.cache._cache.pop(message_id, None)
-            self.cache._access_times.pop(message_id, None)
-        else:
-            self.cache = ValidationCache(self.cache.max_size)
+        """
+        Clear validation cache.
+        
+        Args:
+            message_id: Optional message ID to clear cache for. If None, clears all cache.
+        """
+        try:
+            if message_id:
+                self.cache._cache.pop(message_id, None)
+                self.cache._access_times.pop(message_id, None)
+            else:
+                self.cache = ValidationCache(self.cache.max_size)
+        except Exception as e:
+            logger.error(f"Error clearing validation cache: {e}", exc_info=True)

videoarchiver/processor/queue_handler.py

@@ -1,21 +1,55 @@
-"""Queue processing and video handling operations"""
+"""Queue handling functionality for video processing"""
 
-import os
 import logging
 import asyncio
-import discord
-from typing import Dict, Optional, Tuple, Any
+import os
+from enum import Enum, auto
+from typing import Optional, Dict, Any, List, Tuple, Set, TypedDict, ClassVar, Callable
 from datetime import datetime
+import discord
 
+from ..utils.progress_tracker import ProgressTracker
+from ..database.video_archive_db import VideoArchiveDB
+from ..utils.download_manager import DownloadManager
+from ..utils.message_manager import MessageManager
+from ..utils.exceptions import QueueHandlerError
+from ..queue.models import QueueItem
+from ..config_manager import ConfigManager
 from .constants import REACTIONS
-from .progress_tracker import ProgressTracker
 
 logger = logging.getLogger("VideoArchiver")
 
+class QueueItemStatus(Enum):
+    """Status of a queue item"""
+    PENDING = auto()
+    PROCESSING = auto()
+    COMPLETED = auto()
+    FAILED = auto()
+    CANCELLED = auto()
+
+class QueueStats(TypedDict):
+    """Type definition for queue statistics"""
+    active_downloads: int
+    processing_items: int
+    completed_items: int
+    failed_items: int
+    average_processing_time: float
+    last_processed: Optional[str]
+    is_healthy: bool
+
 class QueueHandler:
     """Handles queue processing and video operations"""
 
-    def __init__(self, bot, config_manager, components, db=None):
+    DOWNLOAD_TIMEOUT: ClassVar[int] = 3600  # 1 hour in seconds
+    MAX_RETRIES: ClassVar[int] = 3
+
+    def __init__(
+        self,
+        bot: discord.Client,
+        config_manager: ConfigManager,
+        components: Dict[int, Dict[str, Any]],
+        db: Optional[VideoArchiveDB] = None
+    ) -> None:
         self.bot = bot
         self.config_manager = config_manager
         self.components = components
@@ -24,101 +58,240 @@ class QueueHandler:
         self._active_downloads: Dict[str, asyncio.Task] = {}
         self._active_downloads_lock = asyncio.Lock()
         self.progress_tracker = ProgressTracker()
+        self._stats: QueueStats = {
+            "active_downloads": 0,
+            "processing_items": 0,
+            "completed_items": 0,
+            "failed_items": 0,
+            "average_processing_time": 0.0,
+            "last_processed": None,
+            "is_healthy": True
+        }
 
-    async def process_video(self, item) -> Tuple[bool, Optional[str]]:
-        """Process a video from the queue"""
+    async def process_video(self, item: QueueItem) -> Tuple[bool, Optional[str]]:
+        """
+        Process a video from the queue.
+        
+        Args:
+            item: Queue item to process
+            
+        Returns:
+            Tuple of (success, error_message)
+            
+        Raises:
+            QueueHandlerError: If there's an error during processing
+        """
         if self._unloading:
             return False, "Processor is unloading"
 
         file_path = None
         original_message = None
         download_task = None
+        start_time = datetime.utcnow()
 
         try:
-            # Start processing
+            self._stats["processing_items"] += 1
             item.start_processing()
             logger.info(f"Started processing video: {item.url}")
 
             # Check if video is already archived
-            if self.db and self.db.is_url_archived(item.url):
-                logger.info(f"Video already archived: {item.url}")
-                if original_message := await self._get_original_message(item):
-                    await original_message.add_reaction(REACTIONS["success"])
-                    archived_info = self.db.get_archived_video(item.url)
-                    if archived_info:
-                        await original_message.reply(f"This video was already archived. You can find it here: {archived_info[0]}")
-                item.finish_processing(True)
+            if self.db and await self._check_archived_video(item):
+                self._update_stats(True, start_time)
                 return True, None
 
-            guild_id = item.guild_id
-            if guild_id not in self.components:
-                error = f"No components found for guild {guild_id}"
-                item.finish_processing(False, error)
-                return False, error
-
-            components = self.components[guild_id]
+            # Get components
+            components = await self._get_components(item.guild_id)
             downloader = components.get("downloader")
             message_manager = components.get("message_manager")
 
             if not downloader or not message_manager:
-                error = f"Missing required components for guild {guild_id}"
-                item.finish_processing(False, error)
-                return False, error
+                raise QueueHandlerError(f"Missing required components for guild {item.guild_id}")
 
             # Get original message and update reactions
             original_message = await self._get_original_message(item)
             if original_message:
-                await original_message.remove_reaction(REACTIONS["queued"], self.bot.user)
-                await original_message.add_reaction(REACTIONS["processing"])
-                logger.info(f"Started processing message {item.message_id}")
+                await self._update_message_reactions(original_message, QueueItemStatus.PROCESSING)
 
-            # Create progress callback
-            progress_callback = self._create_progress_callback(original_message, item.url)
-
-            # Download video
-            success, file_path, error = await self._download_video(
-                downloader, item.url, progress_callback
+            # Download and archive video
+            file_path = await self._process_video_file(
+                downloader, message_manager, item, original_message
             )
-            if not success:
-                if original_message:
-                    await original_message.add_reaction(REACTIONS["error"])
-                    logger.error(f"Download failed for message {item.message_id}: {error}")
-                item.finish_processing(False, f"Failed to download video: {error}")
-                return False, f"Failed to download video: {error}"
 
-            # Archive video
-            success, error = await self._archive_video(
-                guild_id, original_message, message_manager, item.url, file_path
-            )
-            
-            # Finish processing
-            item.finish_processing(success, error if not success else None)
-            return success, error
+            # Success
+            self._update_stats(True, start_time)
+            item.finish_processing(True)
+            if original_message:
+                await self._update_message_reactions(original_message, QueueItemStatus.COMPLETED)
+            return True, None
 
+        except QueueHandlerError as e:
+            logger.error(f"Queue handler error: {str(e)}")
+            self._handle_processing_error(item, original_message, str(e))
+            return False, str(e)
         except Exception as e:
             logger.error(f"Error processing video: {str(e)}", exc_info=True)
-            item.finish_processing(False, str(e))
+            self._handle_processing_error(item, original_message, str(e))
             return False, str(e)
         finally:
-            # Clean up downloaded file
-            if file_path and os.path.exists(file_path):
-                try:
-                    os.unlink(file_path)
-                except Exception as e:
-                    logger.error(f"Failed to clean up file {file_path}: {e}")
+            await self._cleanup_file(file_path)
 
-    async def _archive_video(self, guild_id: int, original_message: Optional[discord.Message],
-                           message_manager, url: str, file_path: str) -> Tuple[bool, Optional[str]]:
-        """Archive downloaded video"""
+    async def _check_archived_video(self, item: QueueItem) -> bool:
+        """Check if video is already archived and handle accordingly"""
+        if not self.db:
+            return False
+
+        if self.db.is_url_archived(item.url):
+            logger.info(f"Video already archived: {item.url}")
+            if original_message := await self._get_original_message(item):
+                await self._update_message_reactions(original_message, QueueItemStatus.COMPLETED)
+                archived_info = self.db.get_archived_video(item.url)
+                if archived_info:
+                    await original_message.reply(
+                        f"This video was already archived. You can find it here: {archived_info[0]}"
+                    )
+            item.finish_processing(True)
+            return True
+        return False
+
+    async def _get_components(
+        self,
+        guild_id: int
+    ) -> Dict[str, Any]:
+        """Get required components for processing"""
+        if guild_id not in self.components:
+            raise QueueHandlerError(f"No components found for guild {guild_id}")
+        return self.components[guild_id]
+
+    async def _process_video_file(
+        self,
+        downloader: DownloadManager,
+        message_manager: MessageManager,
+        item: QueueItem,
+        original_message: Optional[discord.Message]
+    ) -> Optional[str]:
+        """Download and process video file"""
+        # Create progress callback
+        progress_callback = self._create_progress_callback(original_message, item.url)
+
+        # Download video
+        success, file_path, error = await self._download_video(
+            downloader, item.url, progress_callback
+        )
+        if not success:
+            raise QueueHandlerError(f"Failed to download video: {error}")
+
+        # Archive video
+        success, error = await self._archive_video(
+            item.guild_id,
+            original_message,
+            message_manager,
+            item.url,
+            file_path
+        )
+        if not success:
+            raise QueueHandlerError(f"Failed to archive video: {error}")
+
+        return file_path
+
+    def _handle_processing_error(
+        self,
+        item: QueueItem,
+        message: Optional[discord.Message],
+        error: str
+    ) -> None:
+        """Handle processing error"""
+        self._update_stats(False, datetime.utcnow())
+        item.finish_processing(False, error)
+        if message:
+            asyncio.create_task(self._update_message_reactions(message, QueueItemStatus.FAILED))
+
+    def _update_stats(self, success: bool, start_time: datetime) -> None:
+        """Update queue statistics"""
+        processing_time = (datetime.utcnow() - start_time).total_seconds()
+        self._stats["processing_items"] -= 1
+        if success:
+            self._stats["completed_items"] += 1
+        else:
+            self._stats["failed_items"] += 1
+        
+        # Update average processing time
+        total_items = self._stats["completed_items"] + self._stats["failed_items"]
+        if total_items > 0:
+            current_total = self._stats["average_processing_time"] * (total_items - 1)
+            self._stats["average_processing_time"] = (current_total + processing_time) / total_items
+        
+        self._stats["last_processed"] = datetime.utcnow().isoformat()
+
+    async def _update_message_reactions(
+        self,
+        message: discord.Message,
+        status: QueueItemStatus
+    ) -> None:
+        """Update message reactions based on status"""
+        try:
+            # Remove existing reactions
+            for reaction in [
+                REACTIONS["queued"],
+                REACTIONS["processing"],
+                REACTIONS["success"],
+                REACTIONS["error"]
+            ]:
+                try:
+                    await message.remove_reaction(reaction, self.bot.user)
+                except:
+                    pass
+
+            # Add new reaction
+            if status == QueueItemStatus.PROCESSING:
+                await message.add_reaction(REACTIONS["processing"])
+            elif status == QueueItemStatus.COMPLETED:
+                await message.add_reaction(REACTIONS["success"])
+            elif status == QueueItemStatus.FAILED:
+                await message.add_reaction(REACTIONS["error"])
+        except Exception as e:
+            logger.error(f"Error updating message reactions: {e}")
+
+    async def _cleanup_file(self, file_path: Optional[str]) -> None:
+        """Clean up downloaded file"""
+        if file_path and os.path.exists(file_path):
+            try:
+                os.unlink(file_path)
+            except Exception as e:
+                logger.error(f"Failed to clean up file {file_path}: {e}")
+
+    async def _archive_video(
+        self,
+        guild_id: int,
+        original_message: Optional[discord.Message],
+        message_manager: MessageManager,
+        url: str,
+        file_path: str
+    ) -> Tuple[bool, Optional[str]]:
+        """
+        Archive downloaded video.
+        
+        Args:
+            guild_id: Discord guild ID
+            original_message: Original message containing the video
+            message_manager: Message manager instance
+            url: Video URL
+            file_path: Path to downloaded video file
+            
+        Returns:
+            Tuple of (success, error_message)
+            
+        Raises:
+            QueueHandlerError: If archiving fails
+        """
         try:
             # Get archive channel
             guild = self.bot.get_guild(guild_id)
             if not guild:
-                return False, f"Guild {guild_id} not found"
+                raise QueueHandlerError(f"Guild {guild_id} not found")
 
             archive_channel = await self.config_manager.get_channel(guild, "archive")
             if not archive_channel:
-                return False, "Archive channel not configured"
+                raise QueueHandlerError("Archive channel not configured")
 
             # Format message
             try:
@@ -128,13 +301,16 @@ class QueueHandler:
                     author=author, channel=channel, url=url
                 )
             except Exception as e:
-                return False, f"Failed to format message: {str(e)}"
+                raise QueueHandlerError(f"Failed to format message: {str(e)}")
 
             # Upload to archive channel
             if not os.path.exists(file_path):
-                return False, "Processed file not found"
+                raise QueueHandlerError("Processed file not found")
 
-            archive_message = await archive_channel.send(content=message, file=discord.File(file_path))
+            archive_message = await archive_channel.send(
+                content=message,
+                file=discord.File(file_path)
+            )
 
             # Store in database if available
             if self.db and archive_message.attachments:
@@ -148,26 +324,28 @@ class QueueHandler:
                 )
                 logger.info(f"Added video to archive database: {url} -> {discord_url}")
 
-            if original_message:
-                await original_message.remove_reaction(REACTIONS["processing"], self.bot.user)
-                await original_message.add_reaction(REACTIONS["success"])
-                logger.info(f"Successfully processed message {original_message.id}")
-
             return True, None
 
         except discord.HTTPException as e:
-            if original_message:
-                await original_message.add_reaction(REACTIONS["error"])
             logger.error(f"Failed to upload to Discord: {str(e)}")
-            return False, f"Failed to upload to Discord: {str(e)}"
+            raise QueueHandlerError(f"Failed to upload to Discord: {str(e)}")
         except Exception as e:
-            if original_message:
-                await original_message.add_reaction(REACTIONS["error"])
             logger.error(f"Failed to archive video: {str(e)}")
-            return False, f"Failed to archive video: {str(e)}"
+            raise QueueHandlerError(f"Failed to archive video: {str(e)}")
 
-    async def _get_original_message(self, item) -> Optional[discord.Message]:
-        """Retrieve the original message"""
+    async def _get_original_message(
+        self,
+        item: QueueItem
+    ) -> Optional[discord.Message]:
+        """
+        Retrieve the original message.
+        
+        Args:
+            item: Queue item containing message details
+            
+        Returns:
+            Original Discord message or None if not found
+        """
         try:
             channel = self.bot.get_channel(item.channel_id)
             if not channel:
@@ -179,8 +357,21 @@ class QueueHandler:
             logger.error(f"Error fetching original message: {e}")
             return None
 
-    def _create_progress_callback(self, message: Optional[discord.Message], url: str):
-        """Create progress callback function for download tracking"""
+    def _create_progress_callback(
+        self,
+        message: Optional[discord.Message],
+        url: str
+    ) -> Callable[[float], None]:
+        """
+        Create progress callback function for download tracking.
+        
+        Args:
+            message: Discord message to update with progress
+            url: URL being downloaded
+            
+        Returns:
+            Callback function for progress updates
+        """
         def progress_callback(progress: float) -> None:
             if message:
                 try:
@@ -204,22 +395,45 @@ class QueueHandler:
                     logger.error(f"Error in progress callback: {e}")
         return progress_callback
 
-    async def _download_video(self, downloader, url: str, progress_callback) -> Tuple[bool, Optional[str], Optional[str]]:
-        """Download video with progress tracking"""
+    async def _download_video(
+        self,
+        downloader: DownloadManager,
+        url: str,
+        progress_callback: Callable[[float], None]
+    ) -> Tuple[bool, Optional[str], Optional[str]]:
+        """
+        Download video with progress tracking.
+        
+        Args:
+            downloader: Download manager instance
+            url: URL to download
+            progress_callback: Callback for progress updates
+            
+        Returns:
+            Tuple of (success, file_path, error_message)
+        """
         download_task = asyncio.create_task(
             downloader.download_video(url, progress_callback=progress_callback)
         )
 
         async with self._active_downloads_lock:
             self._active_downloads[url] = download_task
+            self._stats["active_downloads"] += 1
 
         try:
-            success, file_path, error = await download_task
+            success, file_path, error = await asyncio.wait_for(
+                download_task,
+                timeout=self.DOWNLOAD_TIMEOUT
+            )
             if success:
                 self.progress_tracker.complete_download(url)
             else:
                 self.progress_tracker.increment_download_retries(url)
             return success, file_path, error
+
+        except asyncio.TimeoutError:
+            logger.error(f"Download timed out for {url}")
+            return False, None, "Download timed out"
         except asyncio.CancelledError:
             logger.info(f"Download cancelled for {url}")
             return False, None, "Download cancelled"
@@ -229,9 +443,15 @@ class QueueHandler:
         finally:
             async with self._active_downloads_lock:
                 self._active_downloads.pop(url, None)
+                self._stats["active_downloads"] -= 1
 
-    async def cleanup(self):
-        """Clean up resources and stop processing"""
+    async def cleanup(self) -> None:
+        """
+        Clean up resources and stop processing.
+        
+        Raises:
+            QueueHandlerError: If cleanup fails
+        """
         try:
             logger.info("Starting QueueHandler cleanup...")
             self._unloading = True
@@ -248,14 +468,15 @@ class QueueHandler:
                         except Exception as e:
                             logger.error(f"Error cancelling download task for {url}: {e}")
                 self._active_downloads.clear()
+                self._stats["active_downloads"] = 0
 
             logger.info("QueueHandler cleanup completed successfully")
 
         except Exception as e:
             logger.error(f"Error during QueueHandler cleanup: {str(e)}", exc_info=True)
-            raise
+            raise QueueHandlerError(f"Cleanup failed: {str(e)}")
 
-    async def force_cleanup(self):
+    async def force_cleanup(self) -> None:
         """Force cleanup of resources when normal cleanup fails"""
         try:
             logger.info("Starting force cleanup of QueueHandler...")
@@ -266,13 +487,18 @@ class QueueHandler:
                 if not task.done():
                     task.cancel()
             self._active_downloads.clear()
+            self._stats["active_downloads"] = 0
 
             logger.info("QueueHandler force cleanup completed")
 
         except Exception as e:
             logger.error(f"Error during QueueHandler force cleanup: {str(e)}", exc_info=True)
 
-    async def _update_download_progress_reaction(self, message: discord.Message, progress: float):
+    async def _update_download_progress_reaction(
+        self,
+        message: discord.Message,
+        progress: float
+    ) -> None:
         """Update download progress reaction on message"""
         if not message:
             return
@@ -307,12 +533,41 @@ class QueueHandler:
             logger.error(f"Failed to update download progress reaction: {e}")
 
     def is_healthy(self) -> bool:
-        """Check if handler is healthy"""
-        # Check if any downloads are stuck
-        current_time = datetime.utcnow()
-        for url, task in self._active_downloads.items():
-            if not task.done() and task.get_coro().cr_frame.f_locals.get('start_time'):
-                start_time = task.get_coro().cr_frame.f_locals['start_time']
-                if (current_time - start_time).total_seconds() > 3600:  # 1 hour timeout
+        """
+        Check if handler is healthy.
+        
+        Returns:
+            True if handler is healthy, False otherwise
+        """
+        try:
+            # Check if any downloads are stuck
+            current_time = datetime.utcnow()
+            for url, task in self._active_downloads.items():
+                if not task.done() and task.get_coro().cr_frame.f_locals.get('start_time'):
+                    start_time = task.get_coro().cr_frame.f_locals['start_time']
+                    if (current_time - start_time).total_seconds() > self.DOWNLOAD_TIMEOUT:
+                        self._stats["is_healthy"] = False
+                        return False
+
+            # Check processing metrics
+            if self._stats["processing_items"] > 0:
+                if self._stats["average_processing_time"] > self.DOWNLOAD_TIMEOUT:
+                    self._stats["is_healthy"] = False
                     return False
-        return True
+
+            self._stats["is_healthy"] = True
+            return True
+
+        except Exception as e:
+            logger.error(f"Error checking health: {e}")
+            self._stats["is_healthy"] = False
+            return False
+
+    def get_stats(self) -> QueueStats:
+        """
+        Get queue handler statistics.
+        
+        Returns:
+            Dictionary containing queue statistics
+        """
+        return self._stats.copy()

videoarchiver/processor/queue_processor.py

@@ -2,21 +2,24 @@
 
 import logging
 import asyncio
-from enum import Enum
-from typing import List, Optional, Dict, Any, Set
+from enum import Enum, auto
+from typing import List, Optional, Dict, Any, Set, Union, TypedDict, ClassVar
 from datetime import datetime
 import discord
 
 from ..queue.models import QueueItem
+from ..queue.manager import EnhancedVideoQueueManager
 from .constants import REACTIONS
+from .url_extractor import URLMetadata
+from ..utils.exceptions import QueueProcessingError
 
 logger = logging.getLogger("VideoArchiver")
 
 class QueuePriority(Enum):
     """Queue item priorities"""
-    HIGH = 0
-    NORMAL = 1
-    LOW = 2
+    HIGH = auto()
+    NORMAL = auto()
+    LOW = auto()
 
 class ProcessingStrategy(Enum):
     """Available processing strategies"""
@@ -24,10 +27,22 @@ class ProcessingStrategy(Enum):
     PRIORITY = "priority"  # Process by priority
     SMART = "smart"  # Smart processing based on various factors
 
+class QueueStats(TypedDict):
+    """Type definition for queue statistics"""
+    total_processed: int
+    successful: int
+    failed: int
+    success_rate: float
+    average_processing_time: float
+    error_counts: Dict[str, int]
+    last_processed: Optional[str]
+
 class QueueMetrics:
     """Tracks queue processing metrics"""
 
-    def __init__(self):
+    MAX_PROCESSING_TIME: ClassVar[float] = 3600.0  # 1 hour in seconds
+
+    def __init__(self) -> None:
         self.total_processed = 0
         self.successful = 0
         self.failed = 0
@@ -36,49 +51,67 @@ class QueueMetrics:
         self.last_processed: Optional[datetime] = None
 
     def record_success(self, processing_time: float) -> None:
-        """Record successful processing"""
+        """
+        Record successful processing.
+        
+        Args:
+            processing_time: Time taken to process in seconds
+        """
+        if processing_time > self.MAX_PROCESSING_TIME:
+            logger.warning(f"Unusually long processing time: {processing_time} seconds")
+        
         self.total_processed += 1
         self.successful += 1
         self.processing_times.append(processing_time)
         self.last_processed = datetime.utcnow()
 
     def record_failure(self, error: str) -> None:
-        """Record processing failure"""
+        """
+        Record processing failure.
+        
+        Args:
+            error: Error message describing the failure
+        """
         self.total_processed += 1
         self.failed += 1
         self.errors[error] = self.errors.get(error, 0) + 1
         self.last_processed = datetime.utcnow()
 
-    def get_stats(self) -> Dict[str, Any]:
-        """Get queue metrics"""
+    def get_stats(self) -> QueueStats:
+        """
+        Get queue metrics.
+        
+        Returns:
+            Dictionary containing queue statistics
+        """
         avg_time = (
             sum(self.processing_times) / len(self.processing_times)
             if self.processing_times
             else 0
         )
-        return {
-            "total_processed": self.total_processed,
-            "successful": self.successful,
-            "failed": self.failed,
-            "success_rate": (
+        return QueueStats(
+            total_processed=self.total_processed,
+            successful=self.successful,
+            failed=self.failed,
+            success_rate=(
                 self.successful / self.total_processed
                 if self.total_processed > 0
                 else 0
             ),
-            "average_processing_time": avg_time,
-            "error_counts": self.errors.copy(),
-            "last_processed": self.last_processed
-        }
+            average_processing_time=avg_time,
+            error_counts=self.errors.copy(),
+            last_processed=self.last_processed.isoformat() if self.last_processed else None
+        )
 
 class QueueProcessor:
     """Handles adding videos to the processing queue"""
 
     def __init__(
         self,
-        queue_manager,
+        queue_manager: EnhancedVideoQueueManager,
         strategy: ProcessingStrategy = ProcessingStrategy.SMART,
         max_retries: int = 3
-    ):
+    ) -> None:
         self.queue_manager = queue_manager
         self.strategy = strategy
         self.max_retries = max_retries
@@ -89,16 +122,34 @@ class QueueProcessor:
     async def process_urls(
         self,
         message: discord.Message,
-        urls: List[str],
+        urls: Union[List[str], Set[str], List[URLMetadata]],
         priority: QueuePriority = QueuePriority.NORMAL
     ) -> None:
-        """Process extracted URLs by adding them to the queue"""
-        for url in urls:
+        """
+        Process extracted URLs by adding them to the queue.
+        
+        Args:
+            message: Discord message containing the URLs
+            urls: List or set of URLs or URLMetadata objects to process
+            priority: Priority level for queue processing
+            
+        Raises:
+            QueueProcessingError: If there's an error adding URLs to the queue
+        """
+        processed_urls: Set[str] = set()
+        
+        for url_data in urls:
+            url = url_data.url if isinstance(url_data, URLMetadata) else url_data
+            
+            if url in processed_urls:
+                logger.debug(f"Skipping duplicate URL: {url}")
+                continue
+                
             try:
                 logger.info(f"Adding URL to queue: {url}")
                 await message.add_reaction(REACTIONS['queued'])
 
-                # Create queue item using the model from queue.models
+                # Create queue item
                 item = QueueItem(
                     url=url,
                     message_id=message.id,
@@ -111,15 +162,24 @@ class QueueProcessor:
 
                 # Add to queue with appropriate strategy
                 await self._add_to_queue(item)
+                processed_urls.add(url)
                 logger.info(f"Successfully added video to queue: {url}")
 
             except Exception as e:
-                logger.error(f"Failed to add video to queue: {str(e)}")
+                logger.error(f"Failed to add video to queue: {str(e)}", exc_info=True)
                 await message.add_reaction(REACTIONS['error'])
-                continue
+                raise QueueProcessingError(f"Failed to add URL to queue: {str(e)}")
 
     async def _add_to_queue(self, item: QueueItem) -> None:
-        """Add item to queue using current strategy"""
+        """
+        Add item to queue using current strategy.
+        
+        Args:
+            item: Queue item to add
+            
+        Raises:
+            QueueProcessingError: If there's an error adding the item
+        """
         async with self._processing_lock:
             if item.url in self._processing:
                 logger.debug(f"URL already being processed: {item.url}")
@@ -136,6 +196,9 @@ class QueueProcessor:
             else:  # FIFO
                 await self._add_fifo(item)
 
+        except Exception as e:
+            logger.error(f"Error adding item to queue: {e}", exc_info=True)
+            raise QueueProcessingError(f"Failed to add item to queue: {str(e)}")
         finally:
             async with self._processing_lock:
                 self._processing.remove(item.url)
@@ -153,7 +216,6 @@ class QueueProcessor:
 
     async def _add_with_smart_strategy(self, item: QueueItem) -> None:
         """Add item using smart processing strategy"""
-        # Calculate priority based on various factors
         priority = await self._calculate_smart_priority(item)
         
         await self.queue_manager.add_to_queue(
@@ -177,7 +239,15 @@ class QueueProcessor:
         )
 
     async def _calculate_smart_priority(self, item: QueueItem) -> int:
-        """Calculate priority using smart strategy"""
+        """
+        Calculate priority using smart strategy.
+        
+        Args:
+            item: Queue item to calculate priority for
+            
+        Returns:
+            Calculated priority value
+        """
         base_priority = item.priority
         
         # Adjust based on queue metrics
@@ -203,7 +273,17 @@ class QueueProcessor:
         channel: discord.TextChannel,
         url: str
     ) -> str:
-        """Format message for archive channel"""
+        """
+        Format message for archive channel.
+        
+        Args:
+            author: Optional message author
+            channel: Channel the message was posted in
+            url: URL being archived
+            
+        Returns:
+            Formatted message string
+        """
         author_mention = author.mention if author else "Unknown User"
         channel_mention = channel.mention if channel else "Unknown Channel"
         
@@ -213,7 +293,12 @@ class QueueProcessor:
         )
 
     def get_metrics(self) -> Dict[str, Any]:
-        """Get queue processing metrics"""
+        """
+        Get queue processing metrics.
+        
+        Returns:
+            Dictionary containing queue metrics and status
+        """
         return {
             "metrics": self.metrics.get_stats(),
             "strategy": self.strategy.value,

videoarchiver/processor/reactions.py

@@ -2,112 +2,184 @@
 
 import logging
 import asyncio
+import re
+from typing import List, Optional
 import discord
+from urllib.parse import urlparse
 
-from .constants import REACTIONS
+from .constants import REACTIONS, ReactionType, get_reaction, get_progress_emoji
+from ..database.video_archive_db import VideoArchiveDB
 
 logger = logging.getLogger("VideoArchiver")
 
-async def handle_archived_reaction(message: discord.Message, user: discord.User, db) -> None:
-    """Handle reaction to archived video message"""
+async def handle_archived_reaction(
+    message: discord.Message,
+    user: discord.User,
+    db: VideoArchiveDB
+) -> None:
+    """
+    Handle reaction to archived video message.
+    
+    Args:
+        message: The Discord message that was reacted to
+        user: The user who added the reaction
+        db: Database instance for checking archived videos
+    """
     try:
         # Check if the reaction is from a user (not the bot) and is the archived reaction
-        if user.bot or str(message.reactions[0].emoji) != REACTIONS['archived']:
+        if user.bot or str(message.reactions[0].emoji) != get_reaction(ReactionType.ARCHIVED):
             return
 
-        # Extract URLs from the message
-        urls = []
-        if message.content:
-            for word in message.content.split():
-                if any(s in word.lower() for s in ['http://', 'https://']):
-                    urls.append(word)
+        # Extract URLs from the message using regex
+        url_pattern = re.compile(r'https?://[^\s<>"]+|www\.[^\s<>"]+')
+        urls = url_pattern.findall(message.content) if message.content else []
 
         # Check each URL in the database
         for url in urls:
+            # Ensure URL has proper scheme
+            if url.startswith('www.'):
+                url = 'http://' + url
+                
+            # Validate URL
+            try:
+                result = urlparse(url)
+                if not all([result.scheme, result.netloc]):
+                    continue
+            except Exception:
+                continue
+
             result = db.get_archived_video(url)
             if result:
                 discord_url = result[0]
-                await message.reply(f"This video was already archived. You can find it here: {discord_url}")
+                await message.reply(
+                    f"This video was already archived. You can find it here: {discord_url}"
+                )
                 return
 
     except Exception as e:
-        logger.error(f"Error handling archived reaction: {e}")
+        logger.error(f"Error handling archived reaction: {e}", exc_info=True)
 
-async def update_queue_position_reaction(message: discord.Message, position: int, bot_user) -> None:
-    """Update queue position reaction"""
+async def update_queue_position_reaction(
+    message: discord.Message,
+    position: int,
+    bot_user: discord.ClientUser
+) -> None:
+    """
+    Update queue position reaction.
+    
+    Args:
+        message: The Discord message to update reactions on
+        position: Queue position (0-based index)
+        bot_user: The bot's user instance for managing reactions
+    """
     try:
-        for reaction in REACTIONS["numbers"]:
+        numbers = get_reaction(ReactionType.NUMBERS)
+        if not isinstance(numbers, list):
+            logger.error("Numbers reaction is not a list")
+            return
+
+        # Remove old reactions
+        for reaction in numbers:
             try:
                 await message.remove_reaction(reaction, bot_user)
-            except:
-                pass
+            except discord.HTTPException as e:
+                logger.warning(f"Failed to remove number reaction: {e}")
+            except Exception as e:
+                logger.error(f"Unexpected error removing number reaction: {e}")
+
+        # Add new reaction if position is valid
+        if 0 <= position < len(numbers):
+            try:
+                await message.add_reaction(numbers[position])
+                logger.info(
+                    f"Updated queue position reaction to {position + 1} for message {message.id}"
+                )
+            except discord.HTTPException as e:
+                logger.error(f"Failed to add queue position reaction: {e}")
 
-        if 0 <= position < len(REACTIONS["numbers"]):
-            await message.add_reaction(REACTIONS["numbers"][position])
-            logger.info(
-                f"Updated queue position reaction to {position + 1} for message {message.id}"
-            )
     except Exception as e:
-        logger.error(f"Failed to update queue position reaction: {e}")
+        logger.error(f"Failed to update queue position reaction: {e}", exc_info=True)
 
-async def update_progress_reaction(message: discord.Message, progress: float, bot_user) -> None:
-    """Update progress reaction based on FFmpeg progress"""
+async def update_progress_reaction(
+    message: discord.Message,
+    progress: float,
+    bot_user: discord.ClientUser
+) -> None:
+    """
+    Update progress reaction based on FFmpeg progress.
+    
+    Args:
+        message: The Discord message to update reactions on
+        progress: Progress value between 0 and 100
+        bot_user: The bot's user instance for managing reactions
+    """
     if not message:
         return
 
     try:
-        # Remove old reactions in the event loop
-        for reaction in REACTIONS["progress"]:
+        progress_emojis = get_reaction(ReactionType.PROGRESS)
+        if not isinstance(progress_emojis, list):
+            logger.error("Progress reaction is not a list")
+            return
+
+        # Remove old reactions
+        for reaction in progress_emojis:
             try:
                 await message.remove_reaction(reaction, bot_user)
+            except discord.HTTPException as e:
+                logger.warning(f"Failed to remove progress reaction: {e}")
             except Exception as e:
-                logger.error(f"Failed to remove progress reaction: {e}")
-                continue
+                logger.error(f"Unexpected error removing progress reaction: {e}")
 
         # Add new reaction based on progress
         try:
-            if progress < 33:
-                await message.add_reaction(REACTIONS["progress"][0])
-            elif progress < 66:
-                await message.add_reaction(REACTIONS["progress"][1])
-            else:
-                await message.add_reaction(REACTIONS["progress"][2])
+            normalized_progress = progress / 100  # Convert to 0-1 range
+            emoji = get_progress_emoji(normalized_progress, progress_emojis)
+            await message.add_reaction(emoji)
         except Exception as e:
             logger.error(f"Failed to add progress reaction: {e}")
 
     except Exception as e:
-        logger.error(f"Failed to update progress reaction: {e}")
+        logger.error(f"Failed to update progress reaction: {e}", exc_info=True)
 
-async def update_download_progress_reaction(message: discord.Message, progress: float, bot_user) -> None:
-    """Update download progress reaction"""
+async def update_download_progress_reaction(
+    message: discord.Message,
+    progress: float,
+    bot_user: discord.ClientUser
+) -> None:
+    """
+    Update download progress reaction.
+    
+    Args:
+        message: The Discord message to update reactions on
+        progress: Progress value between 0 and 100
+        bot_user: The bot's user instance for managing reactions
+    """
     if not message:
         return
 
     try:
-        # Remove old reactions in the event loop
-        for reaction in REACTIONS["download"]:
+        download_emojis = get_reaction(ReactionType.DOWNLOAD)
+        if not isinstance(download_emojis, list):
+            logger.error("Download reaction is not a list")
+            return
+
+        # Remove old reactions
+        for reaction in download_emojis:
             try:
                 await message.remove_reaction(reaction, bot_user)
+            except discord.HTTPException as e:
+                logger.warning(f"Failed to remove download reaction: {e}")
             except Exception as e:
-                logger.error(f"Failed to remove download reaction: {e}")
-                continue
+                logger.error(f"Unexpected error removing download reaction: {e}")
 
         # Add new reaction based on progress
         try:
-            if progress <= 20:
-                await message.add_reaction(REACTIONS["download"][0])
-            elif progress <= 40:
-                await message.add_reaction(REACTIONS["download"][1])
-            elif progress <= 60:
-                await message.add_reaction(REACTIONS["download"][2])
-            elif progress <= 80:
-                await message.add_reaction(REACTIONS["download"][3])
-            elif progress < 100:
-                await message.add_reaction(REACTIONS["download"][4])
-            else:
-                await message.add_reaction(REACTIONS["download"][5])
+            normalized_progress = progress / 100  # Convert to 0-1 range
+            emoji = get_progress_emoji(normalized_progress, download_emojis)
+            await message.add_reaction(emoji)
         except Exception as e:
             logger.error(f"Failed to add download reaction: {e}")
 
     except Exception as e:
-        logger.error(f"Failed to update download progress reaction: {e}")
+        logger.error(f"Failed to update download progress reaction: {e}", exc_info=True)

videoarchiver/processor/status_display.py

@@ -1,23 +1,39 @@
 """Module for handling queue status display and formatting"""
 
-import discord
-from enum import Enum
-from dataclasses import dataclass
-from datetime import datetime
-from typing import Dict, Any, List, Optional
 import logging
+from enum import Enum, auto
+from dataclasses import dataclass, field
+from datetime import datetime
+from typing import Dict, Any, List, Optional, Callable, TypeVar, Union, TypedDict, ClassVar
+import discord
+
+from ..utils.exceptions import DisplayError
 
 logger = logging.getLogger("VideoArchiver")
 
-class DisplayTheme:
-    """Defines display themes"""
-    DEFAULT = {
-        "title_color": discord.Color.blue(),
-        "success_color": discord.Color.green(),
-        "warning_color": discord.Color.gold(),
-        "error_color": discord.Color.red(),
-        "info_color": discord.Color.blurple()
-    }
+T = TypeVar('T')
+
+class DisplayTheme(TypedDict):
+    """Type definition for display theme"""
+    title_color: discord.Color
+    success_color: discord.Color
+    warning_color: discord.Color
+    error_color: discord.Color
+    info_color: discord.Color
+
+class DisplaySection(Enum):
+    """Available display sections"""
+    QUEUE_STATS = auto()
+    DOWNLOADS = auto()
+    COMPRESSIONS = auto()
+    ERRORS = auto()
+    HARDWARE = auto()
+
+class DisplayCondition(Enum):
+    """Display conditions for sections"""
+    HAS_ERRORS = "has_errors"
+    HAS_DOWNLOADS = "has_downloads"
+    HAS_COMPRESSIONS = "has_compressions"
 
 @dataclass
 class DisplayTemplate:
@@ -26,48 +42,116 @@ class DisplayTemplate:
     format_string: str
     inline: bool = False
     order: int = 0
-    condition: Optional[str] = None
-
-class DisplaySection(Enum):
-    """Available display sections"""
-    QUEUE_STATS = "queue_stats"
-    DOWNLOADS = "downloads"
-    COMPRESSIONS = "compressions"
-    ERRORS = "errors"
-    HARDWARE = "hardware"
+    condition: Optional[DisplayCondition] = None
+    formatter: Optional[Callable[[Dict[str, Any]], str]] = None
+    max_items: int = field(default=5)  # Maximum items to display in lists
 
 class StatusFormatter:
     """Formats status information for display"""
 
+    BYTE_UNITS: ClassVar[List[str]] = ['B', 'KB', 'MB', 'GB', 'TB']
+    TIME_THRESHOLDS: ClassVar[List[Tuple[float, str]]] = [
+        (60, 's'),
+        (3600, 'm'),
+        (float('inf'), 'h')
+    ]
+
     @staticmethod
-    def format_bytes(bytes: int) -> str:
-        """Format bytes into human readable format"""
-        for unit in ['B', 'KB', 'MB', 'GB']:
-            if bytes < 1024:
-                return f"{bytes:.1f}{unit}"
-            bytes /= 1024
-        return f"{bytes:.1f}TB"
+    def format_bytes(bytes_value: Union[int, float]) -> str:
+        """
+        Format bytes into human readable format.
+        
+        Args:
+            bytes_value: Number of bytes to format
+            
+        Returns:
+            Formatted string with appropriate unit
+            
+        Raises:
+            ValueError: If bytes_value is negative
+        """
+        if bytes_value < 0:
+            raise ValueError("Bytes value cannot be negative")
+
+        bytes_num = float(bytes_value)
+        for unit in StatusFormatter.BYTE_UNITS:
+            if bytes_num < 1024:
+                return f"{bytes_num:.1f}{unit}"
+            bytes_num /= 1024
+        return f"{bytes_num:.1f}TB"
 
     @staticmethod
     def format_time(seconds: float) -> str:
-        """Format time duration"""
-        if seconds < 60:
-            return f"{seconds:.1f}s"
-        minutes = seconds / 60
-        if minutes < 60:
-            return f"{minutes:.1f}m"
-        hours = minutes / 60
-        return f"{hours:.1f}h"
+        """
+        Format time duration.
+        
+        Args:
+            seconds: Number of seconds to format
+            
+        Returns:
+            Formatted time string
+            
+        Raises:
+            ValueError: If seconds is negative
+        """
+        if seconds < 0:
+            raise ValueError("Time value cannot be negative")
+
+        for threshold, unit in StatusFormatter.TIME_THRESHOLDS:
+            if seconds < threshold:
+                return f"{seconds:.1f}{unit}"
+            seconds /= 60
+        return f"{seconds:.1f}h"
 
     @staticmethod
     def format_percentage(value: float) -> str:
-        """Format percentage value"""
+        """
+        Format percentage value.
+        
+        Args:
+            value: Percentage value to format (0-100)
+            
+        Returns:
+            Formatted percentage string
+            
+        Raises:
+            ValueError: If value is outside valid range
+        """
+        if not 0 <= value <= 100:
+            raise ValueError("Percentage must be between 0 and 100")
         return f"{value:.1f}%"
 
+    @staticmethod
+    def truncate_url(url: str, max_length: int = 50) -> str:
+        """
+        Truncate URL to specified length.
+        
+        Args:
+            url: URL to truncate
+            max_length: Maximum length for URL
+            
+        Returns:
+            Truncated URL string
+            
+        Raises:
+            ValueError: If max_length is less than 4
+        """
+        if max_length < 4:  # Need room for "..."
+            raise ValueError("max_length must be at least 4")
+        return f"{url[:max_length]}..." if len(url) > max_length else url
+
 class DisplayManager:
     """Manages status display configuration"""
 
-    def __init__(self):
+    DEFAULT_THEME: ClassVar[DisplayTheme] = DisplayTheme(
+        title_color=discord.Color.blue(),
+        success_color=discord.Color.green(),
+        warning_color=discord.Color.gold(),
+        error_color=discord.Color.red(),
+        info_color=discord.Color.blurple()
+    )
+
+    def __init__(self) -> None:
         self.templates: Dict[DisplaySection, DisplayTemplate] = {
             DisplaySection.QUEUE_STATS: DisplayTemplate(
                 name="Queue Statistics",
@@ -96,7 +180,8 @@ class DisplayManager:
                     "Retries: {retries}\n"
                     "```"
                 ),
-                order=2
+                order=2,
+                condition=DisplayCondition.HAS_DOWNLOADS
             ),
             DisplaySection.COMPRESSIONS: DisplayTemplate(
                 name="Active Compressions",
@@ -112,12 +197,13 @@ class DisplayManager:
                     "Hardware Accel: {hardware_accel}\n"
                     "```"
                 ),
-                order=3
+                order=3,
+                condition=DisplayCondition.HAS_COMPRESSIONS
             ),
             DisplaySection.ERRORS: DisplayTemplate(
                 name="Error Statistics",
                 format_string="```\n{error_stats}```",
-                condition="has_errors",
+                condition=DisplayCondition.HAS_ERRORS,
                 order=4
             ),
             DisplaySection.HARDWARE: DisplayTemplate(
@@ -132,63 +218,99 @@ class DisplayManager:
                 order=5
             )
         }
-        self.theme = DisplayTheme.DEFAULT
+        self.theme = self.DEFAULT_THEME.copy()
 
 class StatusDisplay:
     """Handles formatting and display of queue status information"""
 
-    def __init__(self):
+    def __init__(self) -> None:
         self.display_manager = DisplayManager()
         self.formatter = StatusFormatter()
 
+    @classmethod
     async def create_queue_status_embed(
-        self,
+        cls,
         queue_status: Dict[str, Any],
         active_ops: Dict[str, Any]
     ) -> discord.Embed:
-        """Create an embed displaying queue status and active operations"""
-        embed = discord.Embed(
-            title="Queue Status Details",
-            color=self.display_manager.theme["title_color"],
-            timestamp=datetime.utcnow()
-        )
+        """
+        Create an embed displaying queue status and active operations.
+        
+        Args:
+            queue_status: Dictionary containing queue status information
+            active_ops: Dictionary containing active operations information
+            
+        Returns:
+            Discord embed containing formatted status information
+            
+        Raises:
+            DisplayError: If there's an error creating the embed
+        """
+        try:
+            display = cls()
+            embed = discord.Embed(
+                title="Queue Status Details",
+                color=display.display_manager.theme["title_color"],
+                timestamp=datetime.utcnow()
+            )
 
-        # Add sections in order
-        sections = sorted(
-            self.display_manager.templates.items(),
-            key=lambda x: x[1].order
-        )
+            # Add sections in order
+            sections = sorted(
+                display.display_manager.templates.items(),
+                key=lambda x: x[1].order
+            )
 
-        for section, template in sections:
-            # Check condition if exists
-            if template.condition:
-                if not self._check_condition(template.condition, queue_status, active_ops):
-                    continue
+            for section, template in sections:
+                try:
+                    # Check condition if exists
+                    if template.condition:
+                        if not display._check_condition(
+                            template.condition,
+                            queue_status,
+                            active_ops
+                        ):
+                            continue
 
-            # Add section based on type
-            if section == DisplaySection.QUEUE_STATS:
-                self._add_queue_statistics(embed, queue_status, template)
-            elif section == DisplaySection.DOWNLOADS:
-                self._add_active_downloads(embed, active_ops.get('downloads', {}), template)
-            elif section == DisplaySection.COMPRESSIONS:
-                self._add_active_compressions(embed, active_ops.get('compressions', {}), template)
-            elif section == DisplaySection.ERRORS:
-                self._add_error_statistics(embed, queue_status, template)
-            elif section == DisplaySection.HARDWARE:
-                self._add_hardware_statistics(embed, queue_status, template)
+                    # Add section based on type
+                    if section == DisplaySection.QUEUE_STATS:
+                        display._add_queue_statistics(embed, queue_status, template)
+                    elif section == DisplaySection.DOWNLOADS:
+                        display._add_active_downloads(embed, active_ops.get('downloads', {}), template)
+                    elif section == DisplaySection.COMPRESSIONS:
+                        display._add_active_compressions(embed, active_ops.get('compressions', {}), template)
+                    elif section == DisplaySection.ERRORS:
+                        display._add_error_statistics(embed, queue_status, template)
+                    elif section == DisplaySection.HARDWARE:
+                        display._add_hardware_statistics(embed, queue_status, template)
+                except Exception as e:
+                    logger.error(f"Error adding section {section.value}: {e}")
+                    # Continue with other sections
 
-        return embed
+            return embed
+
+        except Exception as e:
+            error = f"Error creating status embed: {str(e)}"
+            logger.error(error, exc_info=True)
+            raise DisplayError(error)
 
     def _check_condition(
         self,
-        condition: str,
+        condition: DisplayCondition,
         queue_status: Dict[str, Any],
         active_ops: Dict[str, Any]
     ) -> bool:
         """Check if condition for displaying section is met"""
-        if condition == "has_errors":
-            return bool(queue_status["metrics"]["errors_by_type"])
-        return True
+        try:
+            if condition == DisplayCondition.HAS_ERRORS:
+                return bool(queue_status.get("metrics", {}).get("errors_by_type"))
+            elif condition == DisplayCondition.HAS_DOWNLOADS:
+                return bool(active_ops.get("downloads"))
+            elif condition == DisplayCondition.HAS_COMPRESSIONS:
+                return bool(active_ops.get("compressions"))
+            return True
+        except Exception as e:
+            logger.error(f"Error checking condition {condition}: {e}")
+            return False
 
     def _add_queue_statistics(
         self,
@@ -197,22 +319,31 @@ class StatusDisplay:
         template: DisplayTemplate
     ) -> None:
         """Add queue statistics to the embed"""
-        embed.add_field(
-            name=template.name,
-            value=template.format_string.format(
-                pending=queue_status['pending'],
-                processing=queue_status['processing'],
-                completed=queue_status['completed'],
-                failed=queue_status['failed'],
-                success_rate=self.formatter.format_percentage(
-                    queue_status['metrics']['success_rate'] * 100
+        try:
+            metrics = queue_status.get('metrics', {})
+            embed.add_field(
+                name=template.name,
+                value=template.format_string.format(
+                    pending=queue_status.get('pending', 0),
+                    processing=queue_status.get('processing', 0),
+                    completed=queue_status.get('completed', 0),
+                    failed=queue_status.get('failed', 0),
+                    success_rate=self.formatter.format_percentage(
+                        metrics.get('success_rate', 0) * 100
+                    ),
+                    avg_processing_time=self.formatter.format_time(
+                        metrics.get('avg_processing_time', 0)
+                    )
                 ),
-                avg_processing_time=self.formatter.format_time(
-                    queue_status['metrics']['avg_processing_time']
-                )
-            ),
-            inline=template.inline
-        )
+                inline=template.inline
+            )
+        except Exception as e:
+            logger.error(f"Error adding queue statistics: {e}")
+            embed.add_field(
+                name=template.name,
+                value="```\nError displaying queue statistics```",
+                inline=template.inline
+            )
 
     def _add_active_downloads(
         self,
@@ -221,28 +352,44 @@ class StatusDisplay:
         template: DisplayTemplate
     ) -> None:
         """Add active downloads information to the embed"""
-        if downloads:
-            content = []
-            for url, progress in downloads.items():
-                content.append(template.format_string.format(
-                    url=url[:50] + "..." if len(url) > 50 else url,
-                    percent=self.formatter.format_percentage(progress.get('percent', 0)),
-                    speed=progress.get('speed', 'N/A'),
-                    eta=progress.get('eta', 'N/A'),
-                    size=f"{self.formatter.format_bytes(progress.get('downloaded_bytes', 0))}/"
-                         f"{self.formatter.format_bytes(progress.get('total_bytes', 0))}",
-                    start_time=progress.get('start_time', 'N/A'),
-                    retries=progress.get('retries', 0)
-                ))
+        try:
+            if downloads:
+                content = []
+                for url, progress in list(downloads.items())[:template.max_items]:
+                    try:
+                        content.append(template.format_string.format(
+                            url=self.formatter.truncate_url(url),
+                            percent=self.formatter.format_percentage(progress.get('percent', 0)),
+                            speed=progress.get('speed', 'N/A'),
+                            eta=progress.get('eta', 'N/A'),
+                            size=f"{self.formatter.format_bytes(progress.get('downloaded_bytes', 0))}/"
+                                 f"{self.formatter.format_bytes(progress.get('total_bytes', 0))}",
+                            start_time=progress.get('start_time', 'N/A'),
+                            retries=progress.get('retries', 0)
+                        ))
+                    except Exception as e:
+                        logger.error(f"Error formatting download {url}: {e}")
+                        continue
+
+                if len(downloads) > template.max_items:
+                    content.append(f"\n... and {len(downloads) - template.max_items} more")
+
+                embed.add_field(
+                    name=template.name,
+                    value="".join(content) if content else "```\nNo active downloads```",
+                    inline=template.inline
+                )
+            else:
+                embed.add_field(
+                    name=template.name,
+                    value="```\nNo active downloads```",
+                    inline=template.inline
+                )
+        except Exception as e:
+            logger.error(f"Error adding active downloads: {e}")
             embed.add_field(
                 name=template.name,
-                value="".join(content),
-                inline=template.inline
-            )
-        else:
-            embed.add_field(
-                name=template.name,
-                value="```\nNo active downloads```",
+                value="```\nError displaying downloads```",
                 inline=template.inline
             )
 
@@ -253,28 +400,44 @@ class StatusDisplay:
         template: DisplayTemplate
     ) -> None:
         """Add active compressions information to the embed"""
-        if compressions:
-            content = []
-            for file_id, progress in compressions.items():
-                content.append(template.format_string.format(
-                    filename=progress.get('filename', 'Unknown'),
-                    percent=self.formatter.format_percentage(progress.get('percent', 0)),
-                    elapsed_time=progress.get('elapsed_time', 'N/A'),
-                    input_size=self.formatter.format_bytes(progress.get('input_size', 0)),
-                    current_size=self.formatter.format_bytes(progress.get('current_size', 0)),
-                    target_size=self.formatter.format_bytes(progress.get('target_size', 0)),
-                    codec=progress.get('codec', 'Unknown'),
-                    hardware_accel=progress.get('hardware_accel', False)
-                ))
+        try:
+            if compressions:
+                content = []
+                for file_id, progress in list(compressions.items())[:template.max_items]:
+                    try:
+                        content.append(template.format_string.format(
+                            filename=progress.get('filename', 'Unknown'),
+                            percent=self.formatter.format_percentage(progress.get('percent', 0)),
+                            elapsed_time=progress.get('elapsed_time', 'N/A'),
+                            input_size=self.formatter.format_bytes(progress.get('input_size', 0)),
+                            current_size=self.formatter.format_bytes(progress.get('current_size', 0)),
+                            target_size=self.formatter.format_bytes(progress.get('target_size', 0)),
+                            codec=progress.get('codec', 'Unknown'),
+                            hardware_accel=progress.get('hardware_accel', False)
+                        ))
+                    except Exception as e:
+                        logger.error(f"Error formatting compression {file_id}: {e}")
+                        continue
+
+                if len(compressions) > template.max_items:
+                    content.append(f"\n... and {len(compressions) - template.max_items} more")
+
+                embed.add_field(
+                    name=template.name,
+                    value="".join(content) if content else "```\nNo active compressions```",
+                    inline=template.inline
+                )
+            else:
+                embed.add_field(
+                    name=template.name,
+                    value="```\nNo active compressions```",
+                    inline=template.inline
+                )
+        except Exception as e:
+            logger.error(f"Error adding active compressions: {e}")
             embed.add_field(
                 name=template.name,
-                value="".join(content),
-                inline=template.inline
-            )
-        else:
-            embed.add_field(
-                name=template.name,
-                value="```\nNo active compressions```",
+                value="```\nError displaying compressions```",
                 inline=template.inline
             )
 
@@ -285,14 +448,26 @@ class StatusDisplay:
         template: DisplayTemplate
     ) -> None:
         """Add error statistics to the embed"""
-        if queue_status["metrics"]["errors_by_type"]:
-            error_stats = "\n".join(
-                f"{error_type}: {count}"
-                for error_type, count in queue_status["metrics"]["errors_by_type"].items()
-            )
+        try:
+            metrics = queue_status.get('metrics', {})
+            errors_by_type = metrics.get('errors_by_type', {})
+            if errors_by_type:
+                error_stats = "\n".join(
+                    f"{error_type}: {count}"
+                    for error_type, count in list(errors_by_type.items())[:template.max_items]
+                )
+                if len(errors_by_type) > template.max_items:
+                    error_stats += f"\n... and {len(errors_by_type) - template.max_items} more"
+                embed.add_field(
+                    name=template.name,
+                    value=template.format_string.format(error_stats=error_stats),
+                    inline=template.inline
+                )
+        except Exception as e:
+            logger.error(f"Error adding error statistics: {e}")
             embed.add_field(
                 name=template.name,
-                value=template.format_string.format(error_stats=error_stats),
+                value="```\nError displaying error statistics```",
                 inline=template.inline
             )
 
@@ -303,14 +478,23 @@ class StatusDisplay:
         template: DisplayTemplate
     ) -> None:
         """Add hardware statistics to the embed"""
-        embed.add_field(
-            name=template.name,
-            value=template.format_string.format(
-                hw_failures=queue_status['metrics']['hardware_accel_failures'],
-                comp_failures=queue_status['metrics']['compression_failures'],
-                memory_usage=self.formatter.format_bytes(
-                    queue_status['metrics']['peak_memory_usage'] * 1024 * 1024  # Convert MB to bytes
-                )
-            ),
-            inline=template.inline
-        )
+        try:
+            metrics = queue_status.get('metrics', {})
+            embed.add_field(
+                name=template.name,
+                value=template.format_string.format(
+                    hw_failures=metrics.get('hardware_accel_failures', 0),
+                    comp_failures=metrics.get('compression_failures', 0),
+                    memory_usage=self.formatter.format_bytes(
+                        metrics.get('peak_memory_usage', 0) * 1024 * 1024  # Convert MB to bytes
+                    )
+                ),
+                inline=template.inline
+            )
+        except Exception as e:
+            logger.error(f"Error adding hardware statistics: {e}")
+            embed.add_field(
+                name=template.name,
+                value="```\nError displaying hardware statistics```",
+                inline=template.inline
+            )

videoarchiver/processor/url_extractor.py

@@ -3,10 +3,11 @@
 import logging
 import re
 from enum import Enum
-from dataclasses import dataclass
-from typing import List, Dict, Optional, Set, Pattern
+from dataclasses import dataclass, field
+from typing import List, Dict, Optional, Set, Pattern, ClassVar
+from datetime import datetime
 import discord
-from urllib.parse import urlparse, parse_qs
+from urllib.parse import urlparse, parse_qs, ParseResult
 
 logger = logging.getLogger("VideoArchiver")
 
@@ -19,6 +20,11 @@ class URLPattern:
     supports_timestamp: bool = False
     supports_playlist: bool = False
 
+    def __post_init__(self) -> None:
+        """Validate pattern after initialization"""
+        if not isinstance(self.pattern, Pattern):
+            raise ValueError("Pattern must be a compiled regular expression")
+
 @dataclass
 class URLMetadata:
     """Metadata about an extracted URL"""
@@ -28,6 +34,7 @@ class URLMetadata:
     playlist_id: Optional[str] = None
     video_id: Optional[str] = None
     quality: Optional[str] = None
+    extraction_time: str = field(default_factory=lambda: datetime.utcnow().isoformat())
 
 class URLType(Enum):
     """Types of video URLs"""
@@ -38,84 +45,137 @@ class URLType(Enum):
 class URLPatternManager:
     """Manages URL patterns for different video sites"""
 
-    def __init__(self):
+    YOUTUBE_PATTERN: ClassVar[Pattern] = re.compile(
+        r'(?:https?://)?(?:www\.)?'
+        r'(?:youtube\.com/watch\?v=|youtu\.be/)'
+        r'([a-zA-Z0-9_-]{11})'
+    )
+    VIMEO_PATTERN: ClassVar[Pattern] = re.compile(
+        r'(?:https?://)?(?:www\.)?'
+        r'vimeo\.com/(?:channels/(?:\w+/)?|groups/(?:[^/]*/)*|)'
+        r'(\d+)(?:|/\w+)*'
+    )
+    TWITTER_PATTERN: ClassVar[Pattern] = re.compile(
+        r'(?:https?://)?(?:www\.)?'
+        r'(?:twitter\.com|x\.com)/\w+/status/(\d+)'
+    )
+
+    def __init__(self) -> None:
         self.patterns: Dict[str, URLPattern] = {
             "youtube": URLPattern(
                 site="youtube",
-                pattern=re.compile(
-                    r'(?:https?://)?(?:www\.)?'
-                    r'(?:youtube\.com/watch\?v=|youtu\.be/)'
-                    r'([a-zA-Z0-9_-]{11})'
-                ),
+                pattern=self.YOUTUBE_PATTERN,
                 supports_timestamp=True,
                 supports_playlist=True
             ),
             "vimeo": URLPattern(
                 site="vimeo",
-                pattern=re.compile(
-                    r'(?:https?://)?(?:www\.)?'
-                    r'vimeo\.com/(?:channels/(?:\w+/)?|groups/(?:[^/]*/)*|)'
-                    r'(\d+)(?:|/\w+)*'
-                ),
+                pattern=self.VIMEO_PATTERN,
                 supports_timestamp=True
             ),
             "twitter": URLPattern(
                 site="twitter",
-                pattern=re.compile(
-                    r'(?:https?://)?(?:www\.)?'
-                    r'(?:twitter\.com|x\.com)/\w+/status/(\d+)'
-                ),
+                pattern=self.TWITTER_PATTERN,
                 requires_api=True
-            ),
-            # Add more patterns as needed
+            )
         }
 
-        self.direct_extensions = {'.mp4', '.mov', '.avi', '.webm', '.mkv'}
+        self.direct_extensions: Set[str] = {'.mp4', '.mov', '.avi', '.webm', '.mkv'}
 
     def get_pattern(self, site: str) -> Optional[URLPattern]:
-        """Get pattern for a site"""
+        """
+        Get pattern for a site.
+        
+        Args:
+            site: Site identifier
+            
+        Returns:
+            URLPattern for the site or None if not found
+        """
         return self.patterns.get(site.lower())
 
     def is_supported_site(self, url: str, enabled_sites: Optional[List[str]]) -> bool:
-        """Check if URL is from a supported site"""
+        """
+        Check if URL is from a supported site.
+        
+        Args:
+            url: URL to check
+            enabled_sites: List of enabled site identifiers
+            
+        Returns:
+            True if site is supported, False otherwise
+        """
         if not enabled_sites:
             return True
 
-        parsed = urlparse(url.lower())
-        domain = parsed.netloc.replace('www.', '')
-        return any(site.lower() in domain for site in enabled_sites)
+        try:
+            parsed = urlparse(url.lower())
+            domain = parsed.netloc.replace('www.', '')
+            return any(site.lower() in domain for site in enabled_sites)
+        except Exception as e:
+            logger.error(f"Error checking site support for {url}: {e}")
+            return False
 
 class URLValidator:
     """Validates extracted URLs"""
 
-    def __init__(self, pattern_manager: URLPatternManager):
+    def __init__(self, pattern_manager: URLPatternManager) -> None:
         self.pattern_manager = pattern_manager
 
     def get_url_type(self, url: str) -> URLType:
-        """Determine URL type"""
-        parsed = urlparse(url)
-        if any(parsed.path.lower().endswith(ext) for ext in self.pattern_manager.direct_extensions):
-            return URLType.DIRECT
-        if any(pattern.pattern.match(url) for pattern in self.pattern_manager.patterns.values()):
-            return URLType.PLATFORM
-        return URLType.UNKNOWN
+        """
+        Determine URL type.
+        
+        Args:
+            url: URL to check
+            
+        Returns:
+            URLType indicating the type of URL
+        """
+        try:
+            parsed = urlparse(url)
+            if any(parsed.path.lower().endswith(ext) for ext in self.pattern_manager.direct_extensions):
+                return URLType.DIRECT
+            if any(pattern.pattern.match(url) for pattern in self.pattern_manager.patterns.values()):
+                return URLType.PLATFORM
+            return URLType.UNKNOWN
+        except Exception as e:
+            logger.error(f"Error determining URL type for {url}: {e}")
+            return URLType.UNKNOWN
 
     def is_valid_url(self, url: str) -> bool:
-        """Validate URL format"""
+        """
+        Validate URL format.
+        
+        Args:
+            url: URL to validate
+            
+        Returns:
+            True if URL is valid, False otherwise
+        """
         try:
             result = urlparse(url)
             return all([result.scheme, result.netloc])
-        except Exception:
+        except Exception as e:
+            logger.error(f"Error validating URL {url}: {e}")
             return False
 
 class URLMetadataExtractor:
     """Extracts metadata from URLs"""
 
-    def __init__(self, pattern_manager: URLPatternManager):
+    def __init__(self, pattern_manager: URLPatternManager) -> None:
         self.pattern_manager = pattern_manager
 
     def extract_metadata(self, url: str) -> Optional[URLMetadata]:
-        """Extract metadata from URL"""
+        """
+        Extract metadata from URL.
+        
+        Args:
+            url: URL to extract metadata from
+            
+        Returns:
+            URLMetadata object or None if extraction fails
+        """
         try:
             parsed = urlparse(url)
             
@@ -143,33 +203,41 @@ class URLMetadataExtractor:
             return None
 
         except Exception as e:
-            logger.error(f"Error extracting metadata from URL {url}: {e}")
+            logger.error(f"Error extracting metadata from URL {url}: {e}", exc_info=True)
             return None
 
-    def _extract_timestamp(self, parsed_url: urlparse) -> Optional[int]:
+    def _extract_timestamp(self, parsed_url: ParseResult) -> Optional[int]:
         """Extract timestamp from URL"""
         try:
             params = parse_qs(parsed_url.query)
             if 't' in params:
                 return int(params['t'][0])
             return None
-        except Exception:
+        except (ValueError, IndexError) as e:
+            logger.debug(f"Error extracting timestamp: {e}")
+            return None
+        except Exception as e:
+            logger.error(f"Unexpected error extracting timestamp: {e}")
             return None
 
-    def _extract_playlist_id(self, parsed_url: urlparse) -> Optional[str]:
+    def _extract_playlist_id(self, parsed_url: ParseResult) -> Optional[str]:
         """Extract playlist ID from URL"""
         try:
             params = parse_qs(parsed_url.query)
             if 'list' in params:
                 return params['list'][0]
             return None
-        except Exception:
+        except (KeyError, IndexError) as e:
+            logger.debug(f"Error extracting playlist ID: {e}")
+            return None
+        except Exception as e:
+            logger.error(f"Unexpected error extracting playlist ID: {e}")
             return None
 
 class URLExtractor:
     """Handles extraction of video URLs from messages"""
 
-    def __init__(self):
+    def __init__(self) -> None:
         self.pattern_manager = URLPatternManager()
         self.validator = URLValidator(self.pattern_manager)
         self.metadata_extractor = URLMetadataExtractor(self.pattern_manager)
@@ -180,85 +248,113 @@ class URLExtractor:
         message: discord.Message,
         enabled_sites: Optional[List[str]] = None
     ) -> List[URLMetadata]:
-        """Extract video URLs from message content and attachments"""
-        urls = []
+        """
+        Extract video URLs from message content and attachments.
         
-        # Check cache
-        cache_key = f"{message.id}_{'-'.join(enabled_sites) if enabled_sites else 'all'}"
-        if cache_key in self._url_cache:
-            return [
-                self.metadata_extractor.extract_metadata(url)
-                for url in self._url_cache[cache_key]
-                if url  # Filter out None values
-            ]
+        Args:
+            message: Discord message to extract URLs from
+            enabled_sites: Optional list of enabled site identifiers
+            
+        Returns:
+            List of URLMetadata objects for extracted URLs
+        """
+        urls: List[URLMetadata] = []
+        
+        try:
+            # Check cache
+            cache_key = f"{message.id}_{'-'.join(enabled_sites) if enabled_sites else 'all'}"
+            if cache_key in self._url_cache:
+                return [
+                    metadata for url in self._url_cache[cache_key]
+                    if (metadata := self.metadata_extractor.extract_metadata(url))
+                ]
 
-        # Extract URLs
-        content_urls = await self._extract_from_content(message.content, enabled_sites)
-        attachment_urls = await self._extract_from_attachments(message.attachments)
-        
-        # Process all URLs
-        all_urls = content_urls + attachment_urls
-        valid_urls = []
-        
-        for url in all_urls:
-            if not self.validator.is_valid_url(url):
-                logger.debug(f"Invalid URL format: {url}")
-                continue
-                
-            if not self.pattern_manager.is_supported_site(url, enabled_sites):
-                logger.debug(f"URL {url} doesn't match any enabled sites")
-                continue
-                
-            metadata = self.metadata_extractor.extract_metadata(url)
-            if metadata:
-                urls.append(metadata)
-                valid_urls.append(url)
-            else:
-                logger.debug(f"Could not extract metadata from URL: {url}")
+            # Extract URLs
+            content_urls = await self._extract_from_content(message.content, enabled_sites)
+            attachment_urls = await self._extract_from_attachments(message.attachments)
+            
+            # Process all URLs
+            all_urls = content_urls + attachment_urls
+            valid_urls: Set[str] = set()
+            
+            for url in all_urls:
+                if not self.validator.is_valid_url(url):
+                    logger.debug(f"Invalid URL format: {url}")
+                    continue
+                    
+                if not self.pattern_manager.is_supported_site(url, enabled_sites):
+                    logger.debug(f"URL {url} doesn't match any enabled sites")
+                    continue
+                    
+                metadata = self.metadata_extractor.extract_metadata(url)
+                if metadata:
+                    urls.append(metadata)
+                    valid_urls.add(url)
+                else:
+                    logger.debug(f"Could not extract metadata from URL: {url}")
 
-        # Update cache
-        self._url_cache[cache_key] = set(valid_urls)
-        
-        return urls
+            # Update cache
+            self._url_cache[cache_key] = valid_urls
+            
+            return urls
+
+        except Exception as e:
+            logger.error(f"Error extracting URLs from message {message.id}: {e}", exc_info=True)
+            return []
 
     async def _extract_from_content(
         self,
-        content: str,
+        content: Optional[str],
         enabled_sites: Optional[List[str]]
     ) -> List[str]:
         """Extract video URLs from message content"""
         if not content:
             return []
 
-        urls = []
-        for word in content.split():
-            if self.validator.get_url_type(word) != URLType.UNKNOWN:
-                urls.append(word)
-
-        return urls
+        try:
+            urls = []
+            for word in content.split():
+                if self.validator.get_url_type(word) != URLType.UNKNOWN:
+                    urls.append(word)
+            return urls
+        except Exception as e:
+            logger.error(f"Error extracting URLs from content: {e}", exc_info=True)
+            return []
 
     async def _extract_from_attachments(
         self,
         attachments: List[discord.Attachment]
     ) -> List[str]:
         """Extract video URLs from message attachments"""
-        return [
-            attachment.url
-            for attachment in attachments
-            if any(
-                attachment.filename.lower().endswith(ext)
-                for ext in self.pattern_manager.direct_extensions
-            )
-        ]
+        try:
+            return [
+                attachment.url
+                for attachment in attachments
+                if any(
+                    attachment.filename.lower().endswith(ext)
+                    for ext in self.pattern_manager.direct_extensions
+                )
+            ]
+        except Exception as e:
+            logger.error(f"Error extracting URLs from attachments: {e}", exc_info=True)
+            return []
 
     def clear_cache(self, message_id: Optional[int] = None) -> None:
-        """Clear URL cache"""
-        if message_id:
-            keys_to_remove = [
-                key for key in self._url_cache
-                if key.startswith(f"{message_id}_")
-            ]
-            for key in keys_to_remove:
-                self._url_cache.pop(key, None)
-        else:
-            self._url_cache.clear()
+        """
+        Clear URL cache.
+        
+        Args:
+            message_id: Optional message ID to clear cache for. If None, clears all cache.
+        """
+        try:
+            if message_id:
+                keys_to_remove = [
+                    key for key in self._url_cache
+                    if key.startswith(f"{message_id}_")
+                ]
+                for key in keys_to_remove:
+                    self._url_cache.pop(key, None)
+            else:
+                self._url_cache.clear()
+        except Exception as e:
+            logger.error(f"Error clearing URL cache: {e}", exc_info=True)

videoarchiver/utils/__init__.py

@@ -1,5 +1,7 @@
 """Utility functions and classes for VideoArchiver"""
 
+from typing import Dict, Optional, Any, Union, List
+
 from .file_ops import (
     cleanup_downloads,
     ensure_directory,
@@ -12,16 +14,65 @@ from .directory_manager import DirectoryManager
 from .permission_manager import PermissionManager
 from .download_manager import DownloadManager
 from .compression_manager import CompressionManager
-from .progress_tracker import ProgressTracker
+from .progress_tracker import (
+    ProgressTracker,
+    ProgressStatus,
+    DownloadProgress,
+    CompressionProgress,
+    CompressionParams
+)
 from .path_manager import PathManager
 from .exceptions import (
+    # Base exception
+    VideoArchiverError,
+    ErrorSeverity,
+    ErrorContext,
+    
+    # File operations
     FileOperationError,
     DirectoryError,
     PermissionError,
-    DownloadError,
-    CompressionError,
-    TrackingError,
-    PathError
+    FileCleanupError,
+    
+    # Video operations
+    VideoDownloadError,
+    VideoProcessingError,
+    VideoVerificationError,
+    VideoUploadError,
+    VideoCleanupError,
+    
+    # Resource management
+    ResourceError,
+    ResourceExhaustedError,
+    
+    # Network and API
+    NetworkError,
+    DiscordAPIError,
+    
+    # Component operations
+    ComponentError,
+    ConfigurationError,
+    DatabaseError,
+    FFmpegError,
+    
+    # Queue operations
+    QueueError,
+    QueueHandlerError,
+    QueueProcessorError,
+    
+    # Processing operations
+    ProcessingError,
+    ProcessorError,
+    ValidationError,
+    DisplayError,
+    URLExtractionError,
+    MessageHandlerError,
+    
+    # Cleanup operations
+    CleanupError,
+    
+    # Health monitoring
+    HealthCheckError
 )
 
 __all__ = [
@@ -41,16 +92,75 @@ __all__ = [
     'ProgressTracker',
     'PathManager',
     
-    # Exceptions
+    # Progress Tracking Types
+    'ProgressStatus',
+    'DownloadProgress',
+    'CompressionProgress',
+    'CompressionParams',
+    
+    # Base Exceptions
+    'VideoArchiverError',
+    'ErrorSeverity',
+    'ErrorContext',
+    
+    # File Operation Exceptions
     'FileOperationError',
     'DirectoryError',
     'PermissionError',
-    'DownloadError',
-    'CompressionError',
-    'TrackingError',
-    'PathError'
+    'FileCleanupError',
+    
+    # Video Operation Exceptions
+    'VideoDownloadError',
+    'VideoProcessingError',
+    'VideoVerificationError',
+    'VideoUploadError',
+    'VideoCleanupError',
+    
+    # Resource Exceptions
+    'ResourceError',
+    'ResourceExhaustedError',
+    
+    # Network and API Exceptions
+    'NetworkError',
+    'DiscordAPIError',
+    
+    # Component Exceptions
+    'ComponentError',
+    'ConfigurationError',
+    'DatabaseError',
+    'FFmpegError',
+    
+    # Queue Exceptions
+    'QueueError',
+    'QueueHandlerError',
+    'QueueProcessorError',
+    
+    # Processing Exceptions
+    'ProcessingError',
+    'ProcessorError',
+    'ValidationError',
+    'DisplayError',
+    'URLExtractionError',
+    'MessageHandlerError',
+    
+    # Cleanup Exceptions
+    'CleanupError',
+    
+    # Health Monitoring Exceptions
+    'HealthCheckError',
+    
+    # Helper Functions
+    'get_download_progress',
+    'get_compression_progress',
+    'get_active_downloads',
+    'get_active_compressions'
 ]
 
+# Version information
+__version__ = "1.0.0"
+__author__ = "VideoArchiver Team"
+__description__ = "Utility functions and classes for VideoArchiver"
+
 # Initialize shared instances for module-level access
 directory_manager = DirectoryManager()
 permission_manager = PermissionManager()
@@ -58,3 +168,93 @@ download_manager = DownloadManager()
 compression_manager = CompressionManager()
 progress_tracker = ProgressTracker()
 path_manager = PathManager()
+
+# Progress tracking helper functions
+def get_download_progress(url: Optional[str] = None) -> Union[Dict[str, DownloadProgress], Optional[DownloadProgress]]:
+    """
+    Get progress information for a download.
+    
+    Args:
+        url: Optional URL to get progress for. If None, returns all progress.
+        
+    Returns:
+        If url is provided, returns progress for that URL or None if not found.
+        If url is None, returns dictionary of all download progress.
+        
+    Raises:
+        TrackingError: If there's an error getting progress information
+    """
+    try:
+        return progress_tracker.get_download_progress(url)
+    except Exception as e:
+        raise TrackingError(f"Failed to get download progress: {str(e)}")
+
+def get_compression_progress(input_file: Optional[str] = None) -> Union[Dict[str, CompressionProgress], Optional[CompressionProgress]]:
+    """
+    Get progress information for a compression operation.
+    
+    Args:
+        input_file: Optional file to get progress for. If None, returns all progress.
+        
+    Returns:
+        If input_file is provided, returns progress for that file or None if not found.
+        If input_file is None, returns dictionary of all compression progress.
+        
+    Raises:
+        TrackingError: If there's an error getting progress information
+    """
+    try:
+        return progress_tracker.get_compression_progress(input_file)
+    except Exception as e:
+        raise TrackingError(f"Failed to get compression progress: {str(e)}")
+
+def get_active_downloads() -> Dict[str, DownloadProgress]:
+    """
+    Get all active downloads.
+    
+    Returns:
+        Dictionary mapping URLs to their download progress information
+        
+    Raises:
+        TrackingError: If there's an error getting active downloads
+    """
+    try:
+        return progress_tracker.get_active_downloads()
+    except Exception as e:
+        raise TrackingError(f"Failed to get active downloads: {str(e)}")
+
+def get_active_compressions() -> Dict[str, CompressionProgress]:
+    """
+    Get all active compression operations.
+    
+    Returns:
+        Dictionary mapping file paths to their compression progress information
+        
+    Raises:
+        TrackingError: If there's an error getting active compressions
+    """
+    try:
+        return progress_tracker.get_active_compressions()
+    except Exception as e:
+        raise TrackingError(f"Failed to get active compressions: {str(e)}")
+
+# Error handling helper functions
+def create_error_context(
+    component: str,
+    operation: str,
+    details: Optional[Dict[str, Any]] = None,
+    severity: ErrorSeverity = ErrorSeverity.MEDIUM
+) -> ErrorContext:
+    """
+    Create an error context object.
+    
+    Args:
+        component: Component where error occurred
+        operation: Operation that failed
+        details: Optional error details
+        severity: Error severity level
+        
+    Returns:
+        ErrorContext object
+    """
+    return ErrorContext(component, operation, details, severity)

videoarchiver/utils/compression_handler.py

@@ -0,0 +1,210 @@
+"""Video compression handling utilities"""
+
+import os
+import asyncio
+import logging
+import subprocess
+from datetime import datetime
+from typing import Dict, Optional, Callable, Set, Tuple
+
+from videoarchiver.ffmpeg.ffmpeg_manager import FFmpegManager
+from videoarchiver.ffmpeg.exceptions import CompressionError
+from videoarchiver.utils.exceptions import VideoVerificationError
+from videoarchiver.utils.file_operations import FileOperations
+from videoarchiver.utils.progress_handler import ProgressHandler
+
+logger = logging.getLogger("VideoArchiver")
+
+class CompressionHandler:
+    """Handles video compression operations"""
+
+    def __init__(self, ffmpeg_mgr: FFmpegManager, progress_handler: ProgressHandler,
+                 file_ops: FileOperations):
+        self.ffmpeg_mgr = ffmpeg_mgr
+        self.progress_handler = progress_handler
+        self.file_ops = file_ops
+        self._active_processes: Set[subprocess.Popen] = set()
+        self._processes_lock = asyncio.Lock()
+        self._shutting_down = False
+        self.max_file_size = 0  # Will be set during compression
+
+    async def cleanup(self) -> None:
+        """Clean up compression resources"""
+        self._shutting_down = True
+        try:
+            async with self._processes_lock:
+                for process in self._active_processes:
+                    try:
+                        process.terminate()
+                        await asyncio.sleep(0.1)
+                        if process.poll() is None:
+                            process.kill()
+                    except Exception as e:
+                        logger.error(f"Error killing compression process: {e}")
+                self._active_processes.clear()
+        finally:
+            self._shutting_down = False
+
+    async def compress_video(
+        self,
+        input_file: str,
+        output_file: str,
+        max_size_mb: int,
+        progress_callback: Optional[Callable[[float], None]] = None
+    ) -> Tuple[bool, str]:
+        """Compress video to target size"""
+        if self._shutting_down:
+            return False, "Compression handler is shutting down"
+
+        self.max_file_size = max_size_mb
+
+        try:
+            # Get optimal compression parameters
+            compression_params = self.ffmpeg_mgr.get_compression_params(
+                input_file, max_size_mb
+            )
+
+            # Try hardware acceleration first
+            success = await self._try_compression(
+                input_file,
+                output_file,
+                compression_params,
+                progress_callback,
+                use_hardware=True
+            )
+
+            # Fall back to CPU if hardware acceleration fails
+            if not success:
+                logger.warning("Hardware acceleration failed, falling back to CPU encoding")
+                success = await self._try_compression(
+                    input_file,
+                    output_file,
+                    compression_params,
+                    progress_callback,
+                    use_hardware=False
+                )
+
+            if not success:
+                return False, "Failed to compress with both hardware and CPU encoding"
+
+            # Verify compressed file
+            if not self.file_ops.verify_video_file(output_file, str(self.ffmpeg_mgr.get_ffprobe_path())):
+                return False, "Compressed file verification failed"
+
+            # Check final size
+            within_limit, final_size = self.file_ops.check_file_size(output_file, max_size_mb)
+            if not within_limit:
+                return False, f"Failed to compress to target size: {final_size} bytes"
+
+            return True, ""
+
+        except Exception as e:
+            return False, str(e)
+
+    async def _try_compression(
+        self,
+        input_file: str,
+        output_file: str,
+        params: Dict[str, str],
+        progress_callback: Optional[Callable[[float], None]] = None,
+        use_hardware: bool = True,
+    ) -> bool:
+        """Attempt video compression with given parameters"""
+        if self._shutting_down:
+            return False
+
+        try:
+            # Build FFmpeg command
+            ffmpeg_path = str(self.ffmpeg_mgr.get_ffmpeg_path())
+            cmd = [ffmpeg_path, "-y", "-i", input_file]
+
+            # Add progress monitoring
+            cmd.extend(["-progress", "pipe:1"])
+
+            # Modify parameters based on hardware acceleration preference
+            if use_hardware:
+                gpu_info = self.ffmpeg_mgr.gpu_info
+                if gpu_info["nvidia"] and params.get("c:v") == "libx264":
+                    params["c:v"] = "h264_nvenc"
+                elif gpu_info["amd"] and params.get("c:v") == "libx264":
+                    params["c:v"] = "h264_amf"
+                elif gpu_info["intel"] and params.get("c:v") == "libx264":
+                    params["c:v"] = "h264_qsv"
+            else:
+                params["c:v"] = "libx264"
+
+            # Add all parameters to command
+            for key, value in params.items():
+                cmd.extend([f"-{key}", str(value)])
+
+            # Add output file
+            cmd.append(output_file)
+
+            # Get video duration for progress calculation
+            duration = self.file_ops.get_video_duration(input_file, str(self.ffmpeg_mgr.get_ffprobe_path()))
+
+            # Initialize compression progress
+            self.progress_handler.update(input_file, {
+                "active": True,
+                "filename": os.path.basename(input_file),
+                "start_time": datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S"),
+                "percent": 0,
+                "elapsed_time": "0:00",
+                "input_size": os.path.getsize(input_file),
+                "current_size": 0,
+                "target_size": self.max_file_size * 1024 * 1024,
+                "codec": params.get("c:v", "unknown"),
+                "hardware_accel": use_hardware,
+                "preset": params.get("preset", "unknown"),
+                "crf": params.get("crf", "unknown"),
+                "duration": duration,
+                "bitrate": params.get("b:v", "unknown"),
+                "audio_codec": params.get("c:a", "unknown"),
+                "audio_bitrate": params.get("b:a", "unknown"),
+            })
+
+            # Run compression with progress monitoring
+            try:
+                process = await asyncio.create_subprocess_exec(
+                    *cmd, stdout=asyncio.subprocess.PIPE, stderr=asyncio.subprocess.PIPE
+                )
+
+                # Track the process
+                async with self._processes_lock:
+                    self._active_processes.add(process)
+
+                start_time = datetime.utcnow()
+
+                while True:
+                    if self._shutting_down:
+                        process.terminate()
+                        return False
+
+                    line = await process.stdout.readline()
+                    if not line:
+                        break
+
+                    try:
+                        line = line.decode().strip()
+                        if line.startswith("out_time_ms="):
+                            current_time = int(line.split("=")[1]) / 1000000
+                            self.progress_handler.handle_compression_progress(
+                                input_file, current_time, duration,
+                                output_file, start_time, progress_callback
+                            )
+                    except Exception as e:
+                        logger.error(f"Error parsing FFmpeg progress: {e}")
+
+                await process.wait()
+                return os.path.exists(output_file)
+
+            except Exception as e:
+                logger.error(f"Error during compression process: {e}")
+                return False
+            finally:
+                # Remove process from tracking
+                async with self._processes_lock:
+                    self._active_processes.discard(process)
+
+        except Exception as e:
+            logger.error(f"Compression attempt failed: {str

videoarchiver/utils/download_core.py

@@ -0,0 +1,271 @@
+"""Core download functionality for video archiver"""
+
+import os
+import asyncio
+import logging
+import yt_dlp
+from typing import Dict, Optional, Callable, Tuple
+from pathlib import Path
+
+from videoarchiver.utils.url_validator import check_url_support
+from videoarchiver.utils.progress_handler import ProgressHandler, CancellableYTDLLogger
+from videoarchiver.utils.file_operations import FileOperations
+from videoarchiver.utils.compression_handler import CompressionHandler
+from videoarchiver.utils.process_manager import ProcessManager
+from videoarchiver.ffmpeg.ffmpeg_manager import FFmpegManager
+
+logger = logging.getLogger("VideoArchiver")
+
+class DownloadCore:
+    """Core download functionality for video archiver"""
+
+    def __init__(
+        self,
+        download_path: str,
+        video_format: str,
+        max_quality: int,
+        max_file_size: int,
+        enabled_sites: Optional[list[str]] = None,
+        concurrent_downloads: int = 2,
+        ffmpeg_mgr: Optional[FFmpegManager] = None,
+    ):
+        self.download_path = Path(download_path)
+        self.download_path.mkdir(parents=True, exist_ok=True)
+        os.chmod(str(self.download_path), 0o755)
+
+        self.video_format = video_format
+        self.max_quality = max_quality
+        self.max_file_size = max_file_size
+        self.enabled_sites = enabled_sites
+        self.ffmpeg_mgr = ffmpeg_mgr or FFmpegManager()
+
+        # Initialize components
+        self.process_manager = ProcessManager(concurrent_downloads)
+        self.progress_handler = ProgressHandler()
+        self.file_ops = FileOperations()
+        self.compression_handler = CompressionHandler(
+            self.ffmpeg_mgr, self.progress_handler, self.file_ops
+        )
+
+        # Create cancellable logger
+        self.ytdl_logger = CancellableYTDLLogger()
+
+        # Configure yt-dlp options
+        self.ydl_opts = self._configure_ydl_options()
+
+    def _configure_ydl_options(self) -> Dict:
+        """Configure yt-dlp options"""
+        return {
+            "format": f"bv*[height<={self.max_quality}][ext=mp4]+ba[ext=m4a]/b[height<={self.max_quality}]/best",
+            "outtmpl": "%(title)s.%(ext)s",
+            "merge_output_format": self.video_format,
+            "quiet": True,
+            "no_warnings": True,
+            "extract_flat": True,
+            "concurrent_fragment_downloads": 1,
+            "retries": 5,
+            "fragment_retries": 5,
+            "file_access_retries": 3,
+            "extractor_retries": 5,
+            "postprocessor_hooks": [self._check_file_size],
+            "progress_hooks": [self._handle_progress],
+            "ffmpeg_location": str(self.ffmpeg_mgr.get_ffmpeg_path()),
+            "ffprobe_location": str(self.ffmpeg_mgr.get_ffprobe_path()),
+            "paths": {"home": str(self.download_path)},
+            "logger": self.ytdl_logger,
+            "ignoreerrors": True,
+            "no_color": True,
+            "geo_bypass": True,
+            "socket_timeout": 60,
+            "http_chunk_size": 1048576,
+            "external_downloader_args": {"ffmpeg": ["-timeout", "60000000"]},
+            "max_sleep_interval": 5,
+            "sleep_interval": 1,
+            "max_filesize": self.max_file_size * 1024 * 1024,
+        }
+
+    def _check_file_size(self, info: Dict) -> None:
+        """Check if file size is within limits"""
+        if info.get("filepath") and os.path.exists(info["filepath"]):
+            try:
+                size = os.path.getsize(info["filepath"])
+                if size > (self.max_file_size * 1024 * 1024):
+                    logger.info(
+                        f"File exceeds size limit, will compress: {info['filepath']}"
+                    )
+            except OSError as e:
+                logger.error(f"Error checking file size: {str(e)}")
+
+    def _handle_progress(self, d: Dict) -> None:
+        """Handle download progress updates"""
+        url = d.get("info_dict", {}).get("webpage_url", "unknown")
+        self.progress_handler.handle_download_progress(d, url)
+
+    def is_supported_url(self, url: str) -> bool:
+        """Check if URL is supported"""
+        return check_url_support(url, self.ydl_opts, self.enabled_sites)
+
+    async def download_video(
+        self, url: str, progress_callback: Optional[Callable[[float], None]] = None
+    ) -> Tuple[bool, str, str]:
+        """Download and process a video"""
+        if self.process_manager.is_shutting_down:
+            return False, "", "Download manager is shutting down"
+
+        # Initialize progress tracking
+        self.progress_handler.initialize_progress(url)
+        original_file = None
+        compressed_file = None
+
+        try:
+            # Download the video
+            success, file_path, error = await self._safe_download(
+                url, str(self.download_path), progress_callback
+            )
+            if not success:
+                return False, "", error
+
+            original_file = file_path
+            await self.process_manager.track_download(url, original_file)
+
+            # Check file size and compress if needed
+            within_limit, file_size = self.file_ops.check_file_size(original_file, self.max_file_size)
+            if not within_limit:
+                logger.info(f"Compressing video: {original_file}")
+                try:
+                    compressed_file = os.path.join(
+                        self.download_path,
+                        f"compressed_{os.path.basename(original_file)}",
+                    )
+
+                    # Attempt compression
+                    success, error = await self.compression_handler.compress_video(
+                        original_file,
+                        compressed_file,
+                        self.max_file_size,
+                        progress_callback
+                    )
+
+                    if not success:
+                        await self._cleanup_files(original_file, compressed_file)
+                        return False, "", error
+
+                    # Verify compressed file
+                    if not self.file_ops.verify_video_file(
+                        compressed_file, 
+                        str(self.ffmpeg_mgr.get_ffprobe_path())
+                    ):
+                        await self._cleanup_files(original_file, compressed_file)
+                        return False, "", "Compressed file verification failed"
+
+                    # Delete original and return compressed
+                    await self.file_ops.safe_delete_file(original_file)
+                    return True, compressed_file, ""
+
+                except Exception as e:
+                    error_msg = f"Compression failed: {str(e)}"
+                    await self._cleanup_files(original_file, compressed_file)
+                    return False, "", error_msg
+            else:
+                # Move file to final location if no compression needed
+                final_path = os.path.join(
+                    self.download_path, 
+                    os.path.basename(original_file)
+                )
+                success = await self.file_ops.safe_move_file(original_file, final_path)
+                if not success:
+                    await self._cleanup_files(original_file)
+                    return False, "", "Failed to move file to final location"
+                return True, final_path, ""
+
+        except Exception as e:
+            logger.error(f"Download error: {str(e)}")
+            await self._cleanup_files(original_file, compressed_file)
+            return False, "", str(e)
+
+        finally:
+            # Clean up tracking
+            await self.process_manager.untrack_download(url)
+            self.progress_handler.complete(url)
+
+    async def _safe_download(
+        self,
+        url: str,
+        output_dir: str,
+        progress_callback: Optional[Callable[[float], None]] = None,
+    ) -> Tuple[bool, str, str]:
+        """Safely download video with retries"""
+        if self.process_manager.is_shutting_down:
+            return False, "", "Download manager is shutting down"
+
+        last_error = None
+        for attempt in range(5):  # Max retries
+            try:
+                ydl_opts = self.ydl_opts.copy()
+                ydl_opts["outtmpl"] = os.path.join(output_dir, ydl_opts["outtmpl"])
+
+                # Add progress callback
+                if progress_callback:
+                    original_progress_hook = ydl_opts["progress_hooks"][0]
+
+                    def combined_progress_hook(d):
+                        original_progress_hook(d)
+                        if d["status"] == "downloading":
+                            try:
+                                percent = float(
+                                    d.get("_percent_str", "0").replace("%", "")
+                                )
+                                progress_callback(percent)
+                            except Exception as e:
+                                logger.error(f"Error in progress callback: {e}")
+
+                    ydl_opts["progress_hooks"] = [combined_progress_hook]
+
+                with yt_dlp.YoutubeDL(ydl_opts) as ydl:
+                    info = await asyncio.get_event_loop().run_in_executor(
+                        self.process_manager.download_pool,
+                        lambda: ydl.extract_info(url, download=True)
+                    )
+
+                if info is None:
+                    raise Exception("Failed to extract video information")
+
+                file_path = os.path.join(output_dir, ydl.prepare_filename(info))
+                if not os.path.exists(file_path):
+                    raise FileNotFoundError("Download completed but file not found")
+
+                if not self.file_ops.verify_video_file(
+                    file_path,
+                    str(self.ffmpeg_mgr.get_ffprobe_path())
+                ):
+                    raise Exception("Downloaded file is not a valid video")
+
+                return True, file_path, ""
+
+            except Exception as e:
+                last_error = str(e)
+                logger.error(f"Download attempt {attempt + 1} failed: {str(e)}")
+                if attempt < 4:  # Less than max retries
+                    delay = 10 * (2**attempt) + (attempt * 2)  # Exponential backoff
+                    await asyncio.sleep(delay)
+                else:
+                    return False, "", f"All download attempts failed: {last_error}"
+
+    async def _cleanup_files(self, *files: str) -> None:
+        """Clean up multiple files"""
+        for file in files:
+            if file and os.path.exists(file):
+                await self.file_ops.safe_delete_file(file)
+
+    async def cleanup(self) -> None:
+        """Clean up resources"""
+        await self.process_manager.cleanup()
+        await self.compression_handler.cleanup()
+
+    async def force_cleanup(self) -> None:
+        """Force cleanup of all resources"""
+        self.ytdl_logger.cancelled = True
+        await self.process_m
+        self.ytdl_logger.cancelled = True
+        await self.process_manager.force_cleanup()
+        await self.compress

videoarchiver/utils/exceptions.py

@@ -1,8 +1,44 @@
 """Custom exceptions for VideoArchiver"""
 
+from typing import Optional, Dict, Any
+from enum import Enum, auto
+
+class ErrorSeverity(Enum):
+    """Severity levels for errors"""
+    LOW = auto()
+    MEDIUM = auto()
+    HIGH = auto()
+    CRITICAL = auto()
+
+class ErrorContext:
+    """Context information for errors"""
+    def __init__(
+        self,
+        component: str,
+        operation: str,
+        details: Optional[Dict[str, Any]] = None,
+        severity: ErrorSeverity = ErrorSeverity.MEDIUM
+    ) -> None:
+        self.component = component
+        self.operation = operation
+        self.details = details or {}
+        self.severity = severity
+
+    def __str__(self) -> str:
+        return (
+            f"[{self.severity.name}] {self.component}.{self.operation}: "
+            f"{', '.join(f'{k}={v}' for k, v in self.details.items())}"
+        )
+
 class VideoArchiverError(Exception):
     """Base exception for VideoArchiver errors"""
-    pass
+    def __init__(
+        self,
+        message: str,
+        context: Optional[ErrorContext] = None
+    ) -> None:
+        self.context = context
+        super().__init__(f"{context}: {message}" if context else message)
 
 class VideoDownloadError(VideoArchiverError):
     """Error downloading video"""
@@ -38,7 +74,17 @@ class PermissionError(VideoArchiverError):
 
 class NetworkError(VideoArchiverError):
     """Error with network operations"""
-    pass
+    def __init__(
+        self,
+        message: str,
+        url: Optional[str] = None,
+        status_code: Optional[int] = None,
+        context: Optional[ErrorContext] = None
+    ) -> None:
+        self.url = url
+        self.status_code = status_code
+        details = f" (URL: {url}" + (f", Status: {status_code})" if status_code else ")")
+        super().__init__(message + details, context)
 
 class ResourceError(VideoArchiverError):
     """Error with system resources"""
@@ -54,15 +100,27 @@ class ComponentError(VideoArchiverError):
 
 class DiscordAPIError(VideoArchiverError):
     """Error with Discord API operations"""
-    def __init__(self, message: str, status_code: int = None):
+    def __init__(
+        self,
+        message: str,
+        status_code: Optional[int] = None,
+        context: Optional[ErrorContext] = None
+    ) -> None:
         self.status_code = status_code
-        super().__init__(f"Discord API Error: {message} (Status: {status_code if status_code else 'Unknown'})")
+        details = f" (Status: {status_code})" if status_code else ""
+        super().__init__(f"Discord API Error: {message}{details}", context)
 
 class ResourceExhaustedError(VideoArchiverError):
     """Error when system resources are exhausted"""
-    def __init__(self, message: str, resource_type: str = None):
+    def __init__(
+        self,
+        message: str,
+        resource_type: Optional[str] = None,
+        context: Optional[ErrorContext] = None
+    ) -> None:
         self.resource_type = resource_type
-        super().__init__(f"Resource exhausted: {message} (Type: {resource_type if resource_type else 'Unknown'})")
+        details = f" (Type: {resource_type})" if resource_type else ""
+        super().__init__(f"Resource exhausted: {message}{details}", context)
 
 class ProcessingError(VideoArchiverError):
     """Error during video processing"""
@@ -74,4 +132,126 @@ class CleanupError(VideoArchiverError):
 
 class FileOperationError(VideoArchiverError):
     """Error during file operations"""
+    def __init__(
+        self,
+        message: str,
+        path: Optional[str] = None,
+        operation: Optional[str] = None,
+        context: Optional[ErrorContext] = None
+    ) -> None:
+        self.path = path
+        self.operation = operation
+        details = []
+        if path:
+            details.append(f"Path: {path}")
+        if operation:
+            details.append(f"Operation: {operation}")
+        details_str = f" ({', '.join(details)})" if details else ""
+        super().__init__(f"File operation error: {message}{details_str}", context)
+
+# New exceptions for processor components
+class ProcessorError(VideoArchiverError):
+    """Error in video processor operations"""
     pass
+
+class ValidationError(VideoArchiverError):
+    """Error in message or content validation"""
+    pass
+
+class DisplayError(VideoArchiverError):
+    """Error in status display operations"""
+    pass
+
+class URLExtractionError(VideoArchiverError):
+    """Error extracting URLs from content"""
+    def __init__(
+        self,
+        message: str,
+        url: Optional[str] = None,
+        context: Optional[ErrorContext] = None
+    ) -> None:
+        self.url = url
+        details = f" (URL: {url})" if url else ""
+        super().__init__(f"URL extraction error: {message}{details}", context)
+
+class MessageHandlerError(VideoArchiverError):
+    """Error in message handling operations"""
+    def __init__(
+        self,
+        message: str,
+        message_id: Optional[int] = None,
+        context: Optional[ErrorContext] = None
+    ) -> None:
+        self.message_id = message_id
+        details = f" (Message ID: {message_id})" if message_id else ""
+        super().__init__(f"Message handler error: {message}{details}", context)
+
+class QueueHandlerError(VideoArchiverError):
+    """Error in queue handling operations"""
+    pass
+
+class QueueProcessorError(VideoArchiverError):
+    """Error in queue processing operations"""
+    pass
+
+class FFmpegError(VideoArchiverError):
+    """Error in FFmpeg operations"""
+    def __init__(
+        self,
+        message: str,
+        command: Optional[str] = None,
+        exit_code: Optional[int] = None,
+        context: Optional[ErrorContext] = None
+    ) -> None:
+        self.command = command
+        self.exit_code = exit_code
+        details = []
+        if command:
+            details.append(f"Command: {command}")
+        if exit_code is not None:
+            details.append(f"Exit Code: {exit_code}")
+        details_str = f" ({', '.join(details)})" if details else ""
+        super().__init__(f"FFmpeg error: {message}{details_str}", context)
+
+class DatabaseError(VideoArchiverError):
+    """Error in database operations"""
+    def __init__(
+        self,
+        message: str,
+        query: Optional[str] = None,
+        context: Optional[ErrorContext] = None
+    ) -> None:
+        self.query = query
+        details = f" (Query: {query})" if query else ""
+        super().__init__(f"Database error: {message}{details}", context)
+
+class HealthCheckError(VideoArchiverError):
+    """Error in health check operations"""
+    def __init__(
+        self,
+        message: str,
+        component: Optional[str] = None,
+        context: Optional[ErrorContext] = None
+    ) -> None:
+        self.component = component
+        details = f" (Component: {component})" if component else ""
+        super().__init__(f"Health check error: {message}{details}", context)
+
+class TrackingError(VideoArchiverError):
+    """Error in progress tracking operations"""
+    def __init__(
+        self,
+        message: str,
+        operation: Optional[str] = None,
+        item_id: Optional[str] = None,
+        context: Optional[ErrorContext] = None
+    ) -> None:
+        self.operation = operation
+        self.item_id = item_id
+        details = []
+        if operation:
+            details.append(f"Operation: {operation}")
+        if item_id:
+            details.append(f"Item ID: {item_id}")
+        details_str = f" ({', '.join(details)})" if details else ""
+        super().__init__(f"Progress tracking error: {message}{details_str}", context)

videoarchiver/utils/file_operations.py

@@ -0,0 +1,138 @@
+"""Safe file operations with retry logic"""
+
+import os
+import shutil
+import asyncio
+import logging
+import json
+import subprocess
+from typing import Tuple
+from pathlib import Path
+
+from videoarchiver.utils.exceptions import VideoVerificationError
+from videoarchiver.utils.file_deletion import secure_delete_file
+
+logger = logging.getLogger("VideoArchiver")
+
+class FileOperations:
+    """Handles safe file operations with retries"""
+    
+    def __init__(self, max_retries: int = 3, retry_delay: int = 1):
+        self.max_retries = max_retries
+        self.retry_delay = retry_delay
+
+    async def safe_delete_file(self, file_path: str) -> bool:
+        """Safely delete a file with retries"""
+        for attempt in range(self.max_retries):
+            try:
+                if os.path.exists(file_path):
+                    await secure_delete_file(file_path)
+                return True
+            except Exception as e:
+                logger.error(f"Delete attempt {attempt + 1} failed: {str(e)}")
+                if attempt == self.max_retries - 1:
+                    return False
+                await asyncio.sleep(self.retry_delay * (attempt + 1))
+        return False
+
+    async def safe_move_file(self, src: str, dst: str) -> bool:
+        """Safely move a file with retries"""
+        for attempt in range(self.max_retries):
+            try:
+                os.makedirs(os.path.dirname(dst), exist_ok=True)
+                shutil.move(src, dst)
+                return True
+            except Exception as e:
+                logger.error(f"Move attempt {attempt + 1} failed: {str(e)}")
+                if attempt == self.max_retries - 1:
+                    return False
+                await asyncio.sleep(self.retry_delay * (attempt + 1))
+        return False
+
+    def verify_video_file(self, file_path: str, ffprobe_path: str) -> bool:
+        """Verify video file integrity"""
+        try:
+            cmd = [
+                ffprobe_path,
+                "-v",
+                "quiet",
+                "-print_format",
+                "json",
+                "-show_format",
+                "-show_streams",
+                file_path,
+            ]
+
+            result = subprocess.run(
+                cmd,
+                stdout=subprocess.PIPE,
+                stderr=subprocess.PIPE,
+                text=True,
+                timeout=30,
+            )
+
+            if result.returncode != 0:
+                raise VideoVerificationError(f"FFprobe failed: {result.stderr}")
+
+            probe = json.loads(result.stdout)
+
+            # Verify video stream
+            video_streams = [s for s in probe["streams"] if s["codec_type"] == "video"]
+            if not video_streams:
+                raise VideoVerificationError("No video streams found")
+
+            # Verify duration
+            duration = float(probe["format"].get("duration", 0))
+            if duration <= 0:
+                raise VideoVerificationError("Invalid video duration")
+
+            # Verify file is readable
+            try:
+                with open(file_path, "rb") as f:
+                    f.seek(0, 2)
+                    if f.tell() == 0:
+                        raise VideoVerificationError("Empty file")
+            except Exception as e:
+                raise VideoVerificationError(f"File read error: {str(e)}")
+
+            return True
+
+        except subprocess.TimeoutExpired:
+            logger.error(f"FFprobe timed out for {file_path}")
+            return False
+        except json.JSONDecodeError:
+            logger.error(f"Invalid FFprobe output for {file_path}")
+            return False
+        except Exception as e:
+            logger.error(f"Error verifying video file {file_path}: {e}")
+            return False
+
+    def get_video_duration(self, file_path: str, ffprobe_path: str) -> float:
+        """Get video duration in seconds"""
+        try:
+            cmd = [
+                ffprobe_path,
+                "-v",
+                "quiet",
+                "-print_format",
+                "json",
+                "-show_format",
+                file_path,
+            ]
+            result = subprocess.run(cmd, capture_output=True, text=True)
+            if result.returncode != 0:
+                raise Exception(f"FFprobe failed: {result.stderr}")
+            
+            data = json.loads(result.stdout)
+            return float(data["format"]["duration"])
+        except Exception as e:
+            logger.error(f"Error getting video duration: {e}")
+            return 0
+
+    def check_file_size(self, file_path: str, max_size_mb: int) -> Tuple[bool, int]:
+        """Check if file size is within limits"""
+        try:
+            if os.path.exists(file_path):
+                size = os.path.getsize(file_path)
+                max_size = max_size_mb * 1024 * 1024
+         

videoarchiver/utils/process_manager.py

@@ -0,0 +1,111 @@
+"""Process management and cleanup utilities"""
+
+import asyncio
+import logging
+import subprocess
+from typing import Set, Dict, Any
+from datetime import datetime
+from concurrent.futures import ThreadPoolExecutor
+
+logger = logging.getLogger("VideoArchiver")
+
+class ProcessManager:
+    """Manages processes and resources for video operations"""
+
+    def __init__(self, concurrent_downloads: int = 2):
+        self._active_processes: Set[subprocess.Popen] = set()
+        self._processes_lock = asyncio.Lock()
+        self._shutting_down = False
+        
+        # Create thread pool with proper naming
+        self.download_pool = ThreadPoolExecutor(
+            max_workers=max(1, min(3, concurrent_downloads)),
+            thread_name_prefix="videoarchiver_download"
+        )
+
+        # Track active downloads
+        self.active_downloads: Dict[str, Dict[str, Any]] = {}
+        self._downloads_lock = asyncio.Lock()
+
+    async def cleanup(self) -> None:
+        """Clean up resources with proper shutdown"""
+        self._shutting_down = True
+
+        try:
+            # Kill any active processes
+            async with self._processes_lock:
+                for process in self._active_processes:
+                    try:
+                        process.terminate()
+                        await asyncio.sleep(0.1)  # Give process time to terminate
+                        if process.poll() is None:
+                            process.kill()  # Force kill if still running
+                    except Exception as e:
+                        logger.error(f"Error killing process: {e}")
+                self._active_processes.clear()
+
+            # Clean up thread pool
+            self.download_pool.shutdown(wait=False, cancel_futures=True)
+
+            # Clean up active downloads
+            async with self._downloads_lock:
+                self.active_downloads.clear()
+
+        except Exception as e:
+            logger.error(f"Error during process manager cleanup: {e}")
+        finally:
+            self._shutting_down = False
+
+    async def force_cleanup(self) -> None:
+        """Force cleanup of all resources"""
+        try:
+            # Kill all processes immediately
+            async with self._processes_lock:
+                for process in self._active_processes:
+                    try:
+                        process.kill()
+                    except Exception as e:
+                        logger.error(f"Error force killing process: {e}")
+                self._active_processes.clear()
+
+            # Force shutdown thread pool
+            self.download_pool.shutdown(wait=False, cancel_futures=True)
+
+            # Clear all tracking
+            async with self._downloads_lock:
+                self.active_downloads.clear()
+
+        except Exception as e:
+            logger.error(f"Error during force cleanup: {e}")
+
+    async def track_download(self, url: str, file_path: str) -> None:
+        """Track a new download"""
+        async with self._downloads_lock:
+            self.active_downloads[url] = {
+                "file_path": file_path,
+                "start_time": datetime.utcnow(),
+            }
+
+    async def untrack_download(self, url: str) -> None:
+        """Remove download from tracking"""
+        async with self._downloads_lock:
+            self.active_downloads.pop(url, None)
+
+    async def track_process(self, process: subprocess.Popen) -> None:
+        """Track a new process"""
+        async with self._processes_lock:
+            self._active_processes.add(process)
+
+    async def untrack_process(self, process: subprocess.Popen) -> None:
+        """Remove process from tracking"""
+        async with self._processes_lock:
+            self._active_processes.discard(process)
+
+    @property
+    def is_shutting_down(self) -> bool:
+        """Check if manager is shutting down"""
+        return self._shutting_down
+
+    def get_active_downloads(self) -> Dict[str, Dict[str, Any]]:
+        """Get current active downloads"""
+        return self.acti

videoarchiver/utils/progress_handler.py

@@ -0,0 +1,126 @@
+"""Progress tracking and logging utilities for video downloads"""
+
+import logging
+from datetime import datetime
+from typing import Dict, Any, Optional, Callable
+
+logger = logging.getLogger("VideoArchiver")
+
+class CancellableYTDLLogger:
+    """Custom yt-dlp logger that can handle cancellation"""
+    def __init__(self):
+        self.cancelled = False
+
+    def debug(self, msg):
+        if self.cancelled:
+            raise yt_dlp.utils.DownloadError("Download cancelled")
+        logger.debug(msg)
+
+    def warning(self, msg):
+        if self.cancelled:
+            raise yt_dlp.utils.DownloadError("Download cancelled")
+        logger.warning(msg)
+
+    def error(self, msg):
+        if self.cancelled:
+            raise yt_dlp.utils.DownloadError("Download cancelled")
+        logger.error(msg)
+
+class ProgressHandler:
+    """Handles progress tracking and callbacks for video operations"""
+    def __init__(self):
+        self.progress_data: Dict[str, Dict[str, Any]] = {}
+
+    def initialize_progress(self, url: str) -> None:
+        """Initialize progress tracking for a URL"""
+        self.progress_data[url] = {
+            "active": True,
+            "start_time": datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S"),
+            "percent": 0,
+            "speed": "N/A",
+            "eta": "N/A",
+            "downloaded_bytes": 0,
+            "total_bytes": 0,
+            "retries": 0,
+            "fragment_count": 0,
+            "fragment_index": 0,
+            "video_title": "Unknown",
+            "extractor": "Unknown",
+            "format": "Unknown",
+            "resolution": "Unknown",
+            "fps": "Unknown",
+        }
+
+    def update(self, key: str, data: Dict[str, Any]) -> None:
+        """Update progress data for a key"""
+        if key in self.progress_data:
+            self.progress_data[key].update(data)
+
+    def complete(self, key: str) -> None:
+        """Mark progress as complete for a key"""
+        if key in self.progress_data:
+            self.progress_data[key]["active"] = False
+            self.progress_data[key]["percent"] = 100
+
+    def get_progress(self, key: str) -> Optional[Dict[str, Any]]:
+        """Get progress data for a key"""
+        return self.progress_data.get(key)
+
+    def handle_download_progress(self, d: Dict[str, Any], url: str, 
+                               progress_callback: Optional[Callable[[float], None]] = None) -> None:
+        """Handle download progress updates"""
+        try:
+            if d["status"] == "downloading":
+                progress_data = {
+                    "active": True,
+                    "percent": float(d.get("_percent_str", "0").replace("%", "")),
+                    "speed": d.get("_speed_str", "N/A"),
+                    "eta": d.get("_eta_str", "N/A"),
+                    "downloaded_bytes": d.get("downloaded_bytes", 0),
+                    "total_bytes": d.get("total_bytes", 0) or d.get("total_bytes_estimate", 0),
+                    "retries": d.get("retry_count", 0),
+                    "fragment_count": d.get("fragment_count", 0),
+                    "fragment_index": d.get("fragment_index", 0),
+                    "video_title": d.get("info_dict", {}).get("title", "Unknown"),
+                    "extractor": d.get("info_dict", {}).get("extractor", "Unknown"),
+                    "format": d.get("info_dict", {}).get("format", "Unknown"),
+                    "resolution": d.get("info_dict", {}).get("resolution", "Unknown"),
+                    "fps": d.get("info_dict", {}).get("fps", "Unknown"),
+                }
+                self.update(url, progress_data)
+
+                if progress_callback:
+                    progress_callback(progress_data["percent"])
+
+                logger.debug(
+                    f"Download progress: {progress_data['percent']}% at {progress_data['speed']}, "
+                    f"ETA: {progress_data['eta']}, Downloaded: {progress_data['downloaded_bytes']}/"
+                    f"{progress_data['total_bytes']} bytes"
+                )
+            elif d["status"] == "finished":
+                logger.info(f"Download completed: {d.get('filename', 'unknown')}")
+
+        except Exception as e:
+            logger.error(f"Error in progress handler: {str(e)}")
+
+    def handle_compression_progress(self, input_file: str, current_time: float, duration: float,
+                                  output_file: str, start_time: datetime,
+                                  progress_callback: Optional[Callable[[float], None]] = None) -> None:
+        """Handle compression progress updates"""
+        try:
+            if duration > 0:
+                progress = min(100, (current_time / duration) * 100)
+                elapsed = datetime.utcnow() - start_time
+
+                self.update(input_file, {
+                    "percent": progress,
+                    "elapsed_time": str(elapsed).split(".")[0],
+                    "current_size": os.path.getsize(output_file) if os.path.exists(output_file) else 0,
+                    "current_time": current_time,
+                })
+
+                if progress_callback:
+                    progress_callback(progress)
+
+        except Exception as e:
+            logger.error(f"Error upda

videoarchiver/utils/progress_tracker.py

@@ -1,109 +1,205 @@
-"""Module for tracking download and compression progress"""
+"""Progress tracking module."""
 
 import logging
 from typing import Dict, Any, Optional
 from datetime import datetime
 
-logger = logging.getLogger("ProgressTracker")
+logger = logging.getLogger(__name__)
 
 class ProgressTracker:
-    """Tracks progress of downloads and compression operations"""
+    """Progress tracker singleton."""
+    _instance = None
+
+    def __new__(cls):
+        if cls._instance is None:
+            cls._instance = super().__new__(cls)
+            cls._instance._initialized = False
+        return cls._instance
 
     def __init__(self):
-        self._download_progress: Dict[str, Dict[str, Any]] = {}
-        self._compression_progress: Dict[str, Dict[str, Any]] = {}
+        if not hasattr(self, '_initialized'):
+            self._data: Dict[str, Dict[str, Any]] = {}
+            self._initialized = True
 
-    def start_download(self, url: str) -> None:
-        """Initialize progress tracking for a download"""
-        self._download_progress[url] = {
-            "active": True,
-            "start_time": datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S"),
-            "percent": 0,
-            "speed": "N/A",
-            "eta": "N/A",
-            "downloaded_bytes": 0,
-            "total_bytes": 0,
-            "retries": 0,
-            "fragment_count": 0,
-            "fragment_index": 0,
-            "video_title": "Unknown",
-            "extractor": "Unknown",
-            "format": "Unknown",
-            "resolution": "Unknown",
-            "fps": "Unknown",
-            "last_update": datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S"),
-        }
+    def update(self, key: str, data: Dict[str, Any]) -> None:
+        """Update progress for a key."""
+        if key not in self._data:
+            self._data[key] = {
+                'active': True,
+                'start_time': datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S"),
+                'percent': 0
+            }
+        self._data[key].update(data)
+        self._data[key]['last_update'] = datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S")
+        logger.debug(f"Progress for {key}: {self._data[key].get('percent', 0)}%")
 
-    def update_download_progress(self, data: Dict[str, Any]) -> None:
-        """Update download progress information"""
+    def get(self, key: Optional[str] = None) -> Dict[str, Any]:
+        """Get progress for a key."""
+        if key is None:
+            return self._data
+        return self._data.get(key, {})
+
+    def complete(self, key: str) -> None:
+        """Mark progress as complete."""
+        if key in self._data:
+            self._data[key]['active'] = False
+            logger.info(f"Operation completed for {key}")
+
+    def clear(self) -> None:
+        """Clear all progress data."""
+        self._data.clear()
+        logger.info("Progress data cleared")
+
+_tracker = ProgressTracker()
+
+    def get_compression(self, file_path: Optional[str] = None) -> Dict[str, Any]:
+        """Get compression progress."""
+        if file_path is None:
+            return self._compressions
+        return self._compressions.get(file_path, {})
+
+    def complete_download(self, url: str) -> None:
+        """Mark download as complete."""
+        if url in self._downloads:
+            self._downloads[url]['active'] = False
+            logger.info(f"Download completed for {url}")
+
+    def complete_compression(self, file_path: str) -> None:
+        """Mark compression as complete."""
+        if file_path in self._compressions:
+            self._compressions[file_path]['active'] = False
+            logger.info(f"Compression completed for {file_path}")
+
+    def clear(self) -> None:
+        """Clear all progress data."""
+        self._downloads.clear()
+        self._compressions.clear()
+        logger.info("Progress data cleared")
+
+# Global instance
+_tracker = ProgressTrack
+
+# Global instance
+_tracker = ProgressTracker()
+
+def get_tracker() -> Progre
+        """Clear all progress tracking"""
+        self._download_progress.clear()
+        self._compression_progress.clear()
+        logger.info("Cleared all progress tracking data")
+
+# Create singleton instance
+progress_tracker = ProgressTracker()
+
+def get_progress_tracker() -> ProgressTracker:
+  
+    def mark_compression_complete(self, file_path: str) -> None:
+        """Mark a compression operation as complete"""
+        if file_path in self._compression_progress:
+            self._compression_progress[file_path]['active'] = False
+            logger.info(f"Compression completed for {file_path}")
+
+    def clear_progress(self) -> None:
+        """Clear all progress tracking"""
+        self._download_progress.clear()
+        self._compression_progress.clear()
+        logger.info("Cleared all progress tracking data")
+
+# Create singleton instance
+progress_tracker = ProgressTracker()
+
+# Export the singleton instance
+def get_progress_tracker() -> ProgressTracker:
+    
+        
+        Args:
+            data: Dictionary containing download progress data
+        """
         try:
-            # Get URL from info dict
-            url = data.get("info_dict", {}).get("webpage_url", "unknown")
-            if url not in self._download_progress:
+            info_dict = data.get("info_dict", {})
+            url = info_dict.get("webpage_url")
+            if not url or url not in self._download_progress:
                 return
 
-            if data["status"] == "downloading":
+            if data.get("status") == "downloading":
+                percent_str = data.get("_percent_str", "0").replace("%", "")
+                try:
+                    percent = float(percent_str)
+                except ValueError:
+                    percent = 0.0
+
+                total_bytes = (
+                    data.get("total_bytes", 0) or 
+                    data.get("total_bytes_estimate", 0)
+                )
+
                 self._download_progress[url].update({
                     "active": True,
-                    "percent": float(data.get("_percent_str", "0").replace("%", "")),
+                    "percent": percent,
                     "speed": data.get("_speed_str", "N/A"),
                     "eta": data.get("_eta_str", "N/A"),
                     "downloaded_bytes": data.get("downloaded_bytes", 0),
-                    "total_bytes": data.get("total_bytes", 0) or data.get("total_bytes_estimate", 0),
+                    "total_bytes": total_bytes,
                     "retries": data.get("retry_count", 0),
                     "fragment_count": data.get("fragment_count", 0),
                     "fragment_index": data.get("fragment_index", 0),
-                    "video_title": data.get("info_dict", {}).get("title", "Unknown"),
-                    "extractor": data.get("info_dict", {}).get("extractor", "Unknown"),
-                    "format": data.get("info_dict", {}).get("format", "Unknown"),
-                    "resolution": data.get("info_dict", {}).get("resolution", "Unknown"),
-                    "fps": data.get("info_dict", {}).get("fps", "Unknown"),
-                    "last_update": datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S"),
+                    "video_title": info_dict.get("title", "Unknown"),
+                    "extractor": info_dict.get("extractor", "Unknown"),
+                    "format": info_dict.get("format", "Unknown"),
+                    "resolution": info_dict.get("resolution", "Unknown"),
+                    "fps": info_dict.get("fps", "Unknown"),
+                    "last_update": datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S")
                 })
 
                 logger.debug(
                     f"Download progress for {url}: "
-                    f"{self._download_progress[url]['percent']}% at {self._download_progress[url]['speed']}, "
+                    f"{percent:.1f}% at {self._download_progress[url]['speed']}, "
                     f"ETA: {self._download_progress[url]['eta']}"
                 )
 
         except Exception as e:
-            logger.error(f"Error updating download progress: {e}")
+            logger.error(f"Error updating download progress: {e}", exc_info=True)
 
-    def end_download(self, url: str) -> None:
-        """Mark a download as completed"""
+    def end_download(self, url: str, status: ProgressStatus = ProgressStatus.COMPLETED) -> None:
+        """
+        Mark a download as completed.
+        
+        Args:
+            url: The URL being downloaded
+            status: The final status of the download
+        """
         if url in self._download_progress:
             self._download_progress[url]["active"] = False
+            logger.info(f"Download {status.value} for {url}")
 
-    def start_compression(
-        self,
-        input_file: str,
-        params: Dict[str, str],
-        use_hardware: bool,
-        duration: float,
-        input_size: int,
-        target_size: int
-    ) -> None:
-        """Initialize progress tracking for compression"""
-        self._compression_progress[input_file] = {
-            "active": True,
-            "filename": input_file,
-            "start_time": datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S"),
-            "percent": 0,
-            "elapsed_time": "0:00",
-            "input_size": input_size,
-            "current_size": 0,
-            "target_size": target_size,
-            "codec": params.get("c:v", "unknown"),
-            "hardware_accel": use_hardware,
-            "preset": params.get("preset", "unknown"),
-            "crf": params.get("crf", "unknown"),
-            "duration": duration,
-            "bitrate": params.get("b:v", "unknown"),
-            "audio_codec": params.get("c:a", "unknown"),
-            "audio_bitrate": params.get("b:a", "unknown"),
-            "last_update": datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S"),
-        }
+    def start_compression(self, params: CompressionParams) -> None:
+        """
+        Initialize progress tracking for compression.
+        
+        Args:
+            params: Compression parameters
+        """
+        current_time = datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S")
+        self._compression_progress[params.input_file] = CompressionProgress(
+            active=True,
+            filename=params.input_file,
+            start_time=current_time,
+            percent=0.0,
+            elapsed_time="0:00",
+            input_size=params.input_size,
+            current_size=0,
+            target_size=params.target_size,
+            codec=params.codec_params.get("c:v", "unknown"),
+            hardware_accel=params.use_hardware,
+            preset=params.codec_params.get("preset", "unknown"),
+            crf=params.codec_params.get("crf", "unknown"),
+            duration=params.duration,
+            bitrate=params.codec_params.get("b:v", "unknown"),
+            audio_codec=params.codec_params.get("c:a", "unknown"),
+            audio_bitrate=params.codec_params.get("b:a", "unknown"),
+            last_update=current_time,
+            current_time=None
+        )
 
     def update_compression_progress(
         self,
@@ -113,14 +209,23 @@ class ProgressTracker:
         current_size: int,
         current_time: float
     ) -> None:
-        """Update compression progress information"""
+        """
+        Update compression progress information.
+        
+        Args:
+            input_file: The input file being compressed
+            progress: Current progress percentage (0-100)
+            elapsed_time: Time elapsed as string
+            current_size: Current file size in bytes
+            current_time: Current timestamp in seconds
+        """
         if input_file in self._compression_progress:
             self._compression_progress[input_file].update({
-                "percent": progress,
+                "percent": max(0.0, min(100.0, progress)),
                 "elapsed_time": elapsed_time,
                 "current_size": current_size,
                 "current_time": current_time,
-                "last_update": datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S"),
+                "last_update": datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S")
             })
 
             logger.debug(
@@ -128,29 +233,73 @@ class ProgressTracker:
                 f"{progress:.1f}%, Size: {current_size}/{self._compression_progress[input_file]['target_size']} bytes"
             )
 
-    def end_compression(self, input_file: str) -> None:
-        """Mark a compression operation as completed"""
+    def end_compression(
+        self,
+        input_file: str,
+        status: ProgressStatus = ProgressStatus.COMPLETED
+    ) -> None:
+        """
+        Mark a compression operation as completed.
+        
+        Args:
+            input_file: The input file being compressed
+            status: The final status of the compression
+        """
         if input_file in self._compression_progress:
             self._compression_progress[input_file]["active"] = False
+            logger.info(f"Compression {status.value} for {input_file}")
 
-    def get_download_progress(self, url: str) -> Optional[Dict[str, Any]]:
-        """Get progress information for a download"""
+    def get_download_progress(self, url: Optional[str] = None) -> Optional[DownloadProgress]:
+        """
+        Get progress information for a download.
+        
+        Args:
+            url: Optional URL to get progress for. If None, returns all progress.
+            
+        Returns:
+            Progress information for the specified download or None if not found
+        """
+        if url is None:
+            return self._download_progress
         return self._download_progress.get(url)
 
-    def get_compression_progress(self, input_file: str) -> Optional[Dict[str, Any]]:
-        """Get progress information for a compression operation"""
+    def get_compression_progress(
+        self,
+        input_file: Optional[str] = None
+    ) -> Optional[CompressionProgress]:
+        """
+        Get progress information for a compression operation.
+        
+        Args:
+            input_file: Optional file to get progress for. If None, returns all progress.
+            
+        Returns:
+            Progress information for the specified compression or None if not found
+        """
+        if input_file is None:
+            return self._compression_progress
         return self._compression_progress.get(input_file)
 
-    def get_active_downloads(self) -> Dict[str, Dict[str, Any]]:
-        """Get all active downloads"""
+    def get_active_downloads(self) -> Dict[str, DownloadProgress]:
+        """
+        Get all active downloads.
+        
+        Returns:
+            Dictionary of active downloads and their progress
+        """
         return {
             url: progress
             for url, progress in self._download_progress.items()
             if progress.get("active", False)
         }
 
-    def get_active_compressions(self) -> Dict[str, Dict[str, Any]]:
-        """Get all active compression operations"""
+    def get_active_compressions(self) -> Dict[str, CompressionProgress]:
+        """
+        Get all active compression operations.
+        
+        Returns:
+            Dictionary of active compressions and their progress
+        """
         return {
             input_file: progress
             for input_file, progress in self._compression_progress.items()
@@ -161,3 +310,4 @@ class ProgressTracker:
         """Clear all progress tracking"""
         self._download_progress.clear()
         self._compression_progress.clear()
+        logger.info("Cleared

videoarchiver/utils/url_validator.py

@@ -0,0 +1,76 @@
+"""URL validation utilities for video downloads"""
+
+import re
+import logging
+import yt_dlp
+from typing import List, Optional
+
+logger = logging.getLogger("VideoArchiver")
+
+def is_video_url_pattern(url: str) -> bool:
+    """Check if URL matches common video platform patterns"""
+    video_patterns = [
+        r"youtube\.com/watch\?v=",
+        r"youtu\.be/",
+        r"vimeo\.com/",
+        r"tiktok\.com/",
+        r"twitter\.com/.*/video/",
+        r"x\.com/.*/video/",
+        r"bsky\.app/",
+        r"facebook\.com/.*/videos/",
+        r"instagram\.com/.*/(tv|reel|p)/",
+        r"twitch\.tv/.*/clip/",
+        r"streamable\.com/",
+        r"v\.redd\.it/",
+        r"clips\.twitch\.tv/",
+        r"dailymotion\.com/video/",
+        r"\.mp4$",
+        r"\.webm$",
+        r"\.mov$",
+    ]
+    return any(re.search(pattern, url, re.IGNORECASE) for pattern in video_patterns)
+
+def check_url_support(url: str, ydl_opts: dict, enabled_sites: Optional[List[str]] = None) -> bool:
+    """Check if URL is supported by attempting a simulated download"""
+    if not is_video_url_pattern(url):
+        return False
+
+    try:
+        simulate_opts = {
+            **ydl_opts,
+            "simulate": True,
+            "quiet": True,
+            "no_warnings": True,
+            "extract_flat": True,
+            "skip_download": True,
+            "format": "best",
+        }
+
+        with yt_dlp.YoutubeDL(simulate_opts) as ydl:
+            try:
+                info = ydl.extract_info(url, download=False)
+                if info is None:
+                    return False
+
+                if enabled_sites:
+                    extractor = info.get("extractor", "").lower()
+                    if not any(
+                        site.lower() in extractor for site in enabled_sites
+                    ):
+                        logger.info(f"Site {extractor} not in enabled sites list")
+                        return False
+
+                logger.info(
+                    f"URL supported: {url} (Extractor: {info.get('extractor', 'unknown')})"
+                )
+                return True
+
+            except yt_dlp.utils.UnsupportedError:
+                return False
+            except Exception as e:
+                if "Unsupported URL" not in str(e):
+                    logger.error(f"Error checking URL {url}: {str(e)}")
+                return False
+
+    except Exception as e:
+        logger.error

videoarchiver/utils/video_downloader.py

@@ -1,809 +0,0 @@
-"""Video download and processing utilities"""
-
-import os
-import re
-import logging
-import asyncio
-import ffmpeg
-import yt_dlp
-import shutil
-import subprocess
-import json
-import signal
-from concurrent.futures import ThreadPoolExecutor
-from typing import Dict, List, Optional, Tuple, Callable, Set
-from pathlib import Path
-from datetime import datetime
-
-from videoarchiver.ffmpeg.ffmpeg_manager import FFmpegManager
-from videoarchiver.ffmpeg.exceptions import (
-    FFmpegError,
-    CompressionError,
-    VerificationError,
-    FFprobeError,
-    TimeoutError,
-    handle_ffmpeg_error,
-)
-from videoarchiver.utils.exceptions import VideoVerificationError
-from videoarchiver.utils.file_ops import secure_delete_file
-from videoarchiver.utils.path_manager import temp_path_context
-
-logger = logging.getLogger("VideoArchiver")
-
-
-# Add a custom yt-dlp logger to handle cancellation
-class CancellableYTDLLogger:
-    def __init__(self):
-        self.cancelled = False
-
-    def debug(self, msg):
-        if self.cancelled:
-            raise Exception("Download cancelled")
-        logger.debug(msg)
-
-    def warning(self, msg):
-        if self.cancelled:
-            raise Exception("Download cancelled")
-        logger.warning(msg)
-
-    def error(self, msg):
-        if self.cancelled:
-            raise Exception("Download cancelled")
-        logger.error(msg)
-
-
-def is_video_url_pattern(url: str) -> bool:
-    """Check if URL matches common video platform patterns"""
-    video_patterns = [
-        r"youtube\.com/watch\?v=",
-        r"youtu\.be/",
-        r"vimeo\.com/",
-        r"tiktok\.com/",
-        r"twitter\.com/.*/video/",
-        r"x\.com/.*/video/",
-        r"bsky\.app/",
-        r"facebook\.com/.*/videos/",
-        r"instagram\.com/.*/(tv|reel|p)/",
-        r"twitch\.tv/.*/clip/",
-        r"streamable\.com/",
-        r"v\.redd\.it/",
-        r"clips\.twitch\.tv/",
-        r"dailymotion\.com/video/",
-        r"\.mp4$",
-        r"\.webm$",
-        r"\.mov$",
-    ]
-    return any(re.search(pattern, url, re.IGNORECASE) for pattern in video_patterns)
-
-
-class VideoDownloader:
-    MAX_RETRIES = 5
-    RETRY_DELAY = 10
-    FILE_OP_RETRIES = 3
-    FILE_OP_RETRY_DELAY = 1
-    SHUTDOWN_TIMEOUT = 15  # seconds
-
-    def __init__(
-        self,
-        download_path: str,
-        video_format: str,
-        max_quality: int,
-        max_file_size: int,
-        enabled_sites: Optional[List[str]] = None,
-        concurrent_downloads: int = 2,
-        ffmpeg_mgr: Optional[FFmpegManager] = None,
-    ):
-        self.download_path = Path(download_path)
-        self.download_path.mkdir(parents=True, exist_ok=True)
-        os.chmod(str(self.download_path), 0o755)
-
-        self.video_format = video_format
-        self.max_quality = max_quality
-        self.max_file_size = max_file_size
-        self.enabled_sites = enabled_sites
-        self.ffmpeg_mgr = ffmpeg_mgr or FFmpegManager()
-
-        # Create thread pool with proper naming
-        self.download_pool = ThreadPoolExecutor(
-            max_workers=max(1, min(3, concurrent_downloads)),
-            thread_name_prefix="videoarchiver_download",
-        )
-
-        # Track active downloads and processes
-        self.active_downloads: Dict[str, Dict[str, Any]] = {}
-        self._downloads_lock = asyncio.Lock()
-        self._active_processes: Set[subprocess.Popen] = set()
-        self._processes_lock = asyncio.Lock()
-        self._shutting_down = False
-
-        # Create cancellable logger
-        self.ytdl_logger = CancellableYTDLLogger()
-
-        # Configure yt-dlp options
-        self.ydl_opts = {
-            "format": f"bv*[height<={max_quality}][ext=mp4]+ba[ext=m4a]/b[height<={max_quality}]/best",
-            "outtmpl": "%(title)s.%(ext)s",
-            "merge_output_format": video_format,
-            "quiet": True,
-            "no_warnings": True,
-            "extract_flat": True,
-            "concurrent_fragment_downloads": 1,
-            "retries": self.MAX_RETRIES,
-            "fragment_retries": self.MAX_RETRIES,
-            "file_access_retries": self.FILE_OP_RETRIES,
-            "extractor_retries": self.MAX_RETRIES,
-            "postprocessor_hooks": [self._check_file_size],
-            "progress_hooks": [self._progress_hook, self._detailed_progress_hook],
-            "ffmpeg_location": str(self.ffmpeg_mgr.get_ffmpeg_path()),
-            "ffprobe_location": str(self.ffmpeg_mgr.get_ffprobe_path()),
-            "paths": {"home": str(self.download_path)},
-            "logger": self.ytdl_logger,
-            "ignoreerrors": True,
-            "no_color": True,
-            "geo_bypass": True,
-            "socket_timeout": 60,
-            "http_chunk_size": 1048576,
-            "external_downloader_args": {"ffmpeg": ["-timeout", "60000000"]},
-            "max_sleep_interval": 5,
-            "sleep_interval": 1,
-            "max_filesize": max_file_size * 1024 * 1024,
-        }
-
-    async def cleanup(self) -> None:
-        """Clean up resources with proper shutdown"""
-        self._shutting_down = True
-
-        try:
-            # Cancel active downloads
-            self.ytdl_logger.cancelled = True
-
-            # Kill any active FFmpeg processes
-            async with self._processes_lock:
-                for process in self._active_processes:
-                    try:
-                        process.terminate()
-                        await asyncio.sleep(0.1)  # Give process time to terminate
-                        if process.poll() is None:
-                            process.kill()  # Force kill if still running
-                    except Exception as e:
-                        logger.error(f"Error killing process: {e}")
-                self._active_processes.clear()
-
-            # Clean up thread pool
-            self.download_pool.shutdown(wait=False, cancel_futures=True)
-
-            # Clean up active downloads
-            async with self._downloads_lock:
-                self.active_downloads.clear()
-
-        except Exception as e:
-            logger.error(f"Error during downloader cleanup: {e}")
-        finally:
-            self._shutting_down = False
-
-    async def force_cleanup(self) -> None:
-        """Force cleanup of all resources"""
-        try:
-            # Force cancel all downloads
-            self.ytdl_logger.cancelled = True
-
-            # Kill all processes immediately
-            async with self._processes_lock:
-                for process in self._active_processes:
-                    try:
-                        process.kill()
-                    except Exception as e:
-                        logger.error(f"Error force killing process: {e}")
-                self._active_processes.clear()
-
-            # Force shutdown thread pool
-            self.download_pool.shutdown(wait=False, cancel_futures=True)
-
-            # Clear all tracking
-            async with self._downloads_lock:
-                self.active_downloads.clear()
-
-        except Exception as e:
-            logger.error(f"Error during force cleanup: {e}")
-
-    def _detailed_progress_hook(self, d):
-        """Handle detailed download progress tracking"""
-        try:
-            if d["status"] == "downloading":
-                # Get URL from info dict
-                url = d.get("info_dict", {}).get("webpage_url", "unknown")
-
-                # Update global progress tracking
-                from videoarchiver.processor import _download_progress
-
-                if url in _download_progress:
-                    _download_progress[url].update(
-                        {
-                            "active": True,
-                            "percent": float(
-                                d.get("_percent_str", "0").replace("%", "")
-                            ),
-                            "speed": d.get("_speed_str", "N/A"),
-                            "eta": d.get("_eta_str", "N/A"),
-                            "downloaded_bytes": d.get("downloaded_bytes", 0),
-                            "total_bytes": d.get("total_bytes", 0)
-                            or d.get("total_bytes_estimate", 0),
-                            "retries": d.get("retry_count", 0),
-                            "fragment_count": d.get("fragment_count", 0),
-                            "fragment_index": d.get("fragment_index", 0),
-                            "video_title": d.get("info_dict", {}).get(
-                                "title", "Unknown"
-                            ),
-                            "extractor": d.get("info_dict", {}).get(
-                                "extractor", "Unknown"
-                            ),
-                            "format": d.get("info_dict", {}).get("format", "Unknown"),
-                            "resolution": d.get("info_dict", {}).get(
-                                "resolution", "Unknown"
-                            ),
-                            "fps": d.get("info_dict", {}).get("fps", "Unknown"),
-                            "last_update": datetime.utcnow().strftime(
-                                "%Y-%m-%d %H:%M:%S"
-                            ),
-                        }
-                    )
-
-                    logger.debug(
-                        f"Detailed progress for {url}: "
-                        f"{_download_progress[url]['percent']}% at {_download_progress[url]['speed']}, "
-                        f"ETA: {_download_progress[url]['eta']}"
-                    )
-        except Exception as e:
-            logger.error(f"Error in detailed progress hook: {str(e)}")
-
-    def _progress_hook(self, d):
-        """Handle download progress"""
-        if d["status"] == "finished":
-            logger.info(f"Download completed: {d['filename']}")
-        elif d["status"] == "downloading":
-            try:
-                percent = float(d.get("_percent_str", "0").replace("%", ""))
-                speed = d.get("_speed_str", "N/A")
-                eta = d.get("_eta_str", "N/A")
-                downloaded = d.get("downloaded_bytes", 0)
-                total = d.get("total_bytes", 0) or d.get("total_bytes_estimate", 0)
-
-                logger.debug(
-                    f"Download progress: {percent}% at {speed}, "
-                    f"ETA: {eta}, Downloaded: {downloaded}/{total} bytes"
-                )
-            except Exception as e:
-                logger.debug(f"Error logging progress: {str(e)}")
-
-    def is_supported_url(self, url: str) -> bool:
-        """Check if URL is supported by attempting a simulated download"""
-        if not is_video_url_pattern(url):
-            return False
-
-        try:
-            simulate_opts = {
-                **self.ydl_opts,
-                "simulate": True,
-                "quiet": True,
-                "no_warnings": True,
-                "extract_flat": True,
-                "skip_download": True,
-                "format": "best",
-            }
-
-            with yt_dlp.YoutubeDL(simulate_opts) as ydl:
-                try:
-                    info = ydl.extract_info(url, download=False)
-                    if info is None:
-                        return False
-
-                    if self.enabled_sites:
-                        extractor = info.get("extractor", "").lower()
-                        if not any(
-                            site.lower() in extractor for site in self.enabled_sites
-                        ):
-                            logger.info(f"Site {extractor} not in enabled sites list")
-                            return False
-
-                    logger.info(
-                        f"URL supported: {url} (Extractor: {info.get('extractor', 'unknown')})"
-                    )
-                    return True
-
-                except yt_dlp.utils.UnsupportedError:
-                    return False
-                except Exception as e:
-                    if "Unsupported URL" not in str(e):
-                        logger.error(f"Error checking URL {url}: {str(e)}")
-                    return False
-
-        except Exception as e:
-            logger.error(f"Error during URL check: {str(e)}")
-            return False
-
-    async def download_video(
-        self, url: str, progress_callback: Optional[Callable[[float], None]] = None
-    ) -> Tuple[bool, str, str]:
-        """Download and process a video with improved error handling"""
-        if self._shutting_down:
-            return False, "", "Downloader is shutting down"
-
-        # Initialize progress tracking for this URL
-        from videoarchiver.processor import _download_progress
-
-        _download_progress[url] = {
-            "active": True,
-            "start_time": datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S"),
-            "percent": 0,
-            "speed": "N/A",
-            "eta": "N/A",
-            "downloaded_bytes": 0,
-            "total_bytes": 0,
-            "retries": 0,
-            "fragment_count": 0,
-            "fragment_index": 0,
-            "video_title": "Unknown",
-            "extractor": "Unknown",
-            "format": "Unknown",
-            "resolution": "Unknown",
-            "fps": "Unknown",
-            "last_update": datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S"),
-        }
-
-        original_file = None
-        compressed_file = None
-        temp_dir = None
-        hardware_accel_failed = False
-        compression_params = None
-
-        try:
-            with temp_path_context() as temp_dir:
-                # Download the video
-                success, file_path, error = await self._safe_download(
-                    url, temp_dir, progress_callback
-                )
-                if not success:
-                    return False, "", error
-
-                original_file = file_path
-
-                async with self._downloads_lock:
-                    self.active_downloads[url] = {
-                        "file_path": original_file,
-                        "start_time": datetime.utcnow(),
-                    }
-
-                # Check file size and compress if needed
-                file_size = os.path.getsize(original_file)
-                if file_size > (self.max_file_size * 1024 * 1024):
-                    logger.info(f"Compressing video: {original_file}")
-                    try:
-                        # Get optimal compression parameters
-                        compression_params = self.ffmpeg_mgr.get_compression_params(
-                            original_file, self.max_file_size
-                        )
-                        compressed_file = os.path.join(
-                            self.download_path,
-                            f"compressed_{os.path.basename(original_file)}",
-                        )
-
-                        # Try hardware acceleration first
-                        success = await self._try_compression(
-                            original_file,
-                            compressed_file,
-                            compression_params,
-                            progress_callback,
-                            use_hardware=True,
-                        )
-
-                        # If hardware acceleration fails, fall back to CPU
-                        if not success:
-                            hardware_accel_failed = True
-                            logger.warning(
-                                "Hardware acceleration failed, falling back to CPU encoding"
-                            )
-                            success = await self._try_compression(
-                                original_file,
-                                compressed_file,
-                                compression_params,
-                                progress_callback,
-                                use_hardware=False,
-                            )
-
-                        if not success:
-                            raise CompressionError(
-                                "Failed to compress with both hardware and CPU encoding",
-                                file_size,
-                                self.max_file_size * 1024 * 1024,
-                            )
-
-                        # Verify compressed file
-                        if not self._verify_video_file(compressed_file):
-                            raise VideoVerificationError(
-                                "Compressed file verification failed"
-                            )
-
-                        compressed_size = os.path.getsize(compressed_file)
-                        if compressed_size <= (self.max_file_size * 1024 * 1024):
-                            await self._safe_delete_file(original_file)
-                            return True, compressed_file, ""
-                        else:
-                            await self._safe_delete_file(compressed_file)
-                            raise CompressionError(
-                                "Failed to compress to target size",
-                                file_size,
-                                self.max_file_size * 1024 * 1024,
-                            )
-
-                    except Exception as e:
-                        error_msg = str(e)
-                        if hardware_accel_failed:
-                            error_msg = f"Hardware acceleration failed, CPU fallback error: {error_msg}"
-                        if compressed_file and os.path.exists(compressed_file):
-                            await self._safe_delete_file(compressed_file)
-                        return False, "", error_msg
-
-                else:
-                    # Move file to final location
-                    final_path = os.path.join(
-                        self.download_path, os.path.basename(original_file)
-                    )
-                    success = await self._safe_move_file(original_file, final_path)
-                    if not success:
-                        return False, "", "Failed to move file to final location"
-                    return True, final_path, ""
-
-        except Exception as e:
-            logger.error(f"Download error: {str(e)}")
-            return False, "", str(e)
-
-        finally:
-            # Clean up
-            async with self._downloads_lock:
-                self.active_downloads.pop(url, None)
-                if url in _download_progress:
-                    _download_progress[url]["active"] = False
-
-            try:
-                if original_file and os.path.exists(original_file):
-                    await self._safe_delete_file(original_file)
-                if (
-                    compressed_file
-                    and os.path.exists(compressed_file)
-                    and not compressed_file.startswith(self.download_path)
-                ):
-                    await self._safe_delete_file(compressed_file)
-            except Exception as e:
-                logger.error(f"Error during file cleanup: {str(e)}")
-
-    async def _try_compression(
-        self,
-        input_file: str,
-        output_file: str,
-        params: Dict[str, str],
-        progress_callback: Optional[Callable[[float], None]] = None,
-        use_hardware: bool = True,
-    ) -> bool:
-        """Attempt video compression with given parameters"""
-        if self._shutting_down:
-            return False
-
-        try:
-            # Build FFmpeg command
-            ffmpeg_path = str(self.ffmpeg_mgr.get_ffmpeg_path())
-            cmd = [ffmpeg_path, "-y", "-i", input_file]
-
-            # Add progress monitoring
-            cmd.extend(["-progress", "pipe:1"])
-
-            # Modify parameters based on hardware acceleration preference
-            if use_hardware:
-                gpu_info = self.ffmpeg_mgr.gpu_info
-                if gpu_info["nvidia"] and params.get("c:v") == "libx264":
-                    params["c:v"] = "h264_nvenc"
-                elif gpu_info["amd"] and params.get("c:v") == "libx264":
-                    params["c:v"] = "h264_amf"
-                elif gpu_info["intel"] and params.get("c:v") == "libx264":
-                    params["c:v"] = "h264_qsv"
-            else:
-                params["c:v"] = "libx264"
-
-            # Add all parameters to command
-            for key, value in params.items():
-                cmd.extend([f"-{key}", str(value)])
-
-            # Add output file
-            cmd.append(output_file)
-
-            # Get video duration for progress calculation
-            duration = self._get_video_duration(input_file)
-
-            # Update compression progress tracking
-            from videoarchiver.processor import _compression_progress
-
-            # Get input file size
-            input_size = os.path.getsize(input_file)
-
-            # Initialize compression progress
-            _compression_progress[input_file] = {
-                "active": True,
-                "filename": os.path.basename(input_file),
-                "start_time": datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S"),
-                "percent": 0,
-                "elapsed_time": "0:00",
-                "input_size": input_size,
-                "current_size": 0,
-                "target_size": self.max_file_size * 1024 * 1024,
-                "codec": params.get("c:v", "unknown"),
-                "hardware_accel": use_hardware,
-                "preset": params.get("preset", "unknown"),
-                "crf": params.get("crf", "unknown"),
-                "duration": duration,
-                "bitrate": params.get("b:v", "unknown"),
-                "audio_codec": params.get("c:a", "unknown"),
-                "audio_bitrate": params.get("b:a", "unknown"),
-                "last_update": datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S"),
-            }
-
-            # Run compression with progress monitoring
-            process = await asyncio.create_subprocess_exec(
-                *cmd, stdout=asyncio.subprocess.PIPE, stderr=asyncio.subprocess.PIPE
-            )
-
-            # Track the process
-            async with self._processes_lock:
-                self._active_processes.add(process)
-
-            start_time = datetime.utcnow()
-            loop = asyncio.get_running_loop()
-
-            try:
-                while True:
-                    if self._shutting_down:
-                        process.terminate()
-                        return False
-
-                    line = await process.stdout.readline()
-                    if not line:
-                        break
-
-                    try:
-                        line = line.decode().strip()
-                        if line.startswith("out_time_ms="):
-                            current_time = (
-                                int(line.split("=")[1]) / 1000000
-                            )  # Convert microseconds to seconds
-                            if duration > 0:
-                                progress = min(100, (current_time / duration) * 100)
-
-                                # Update compression progress
-                                elapsed = datetime.utcnow() - start_time
-                                _compression_progress[input_file].update(
-                                    {
-                                        "percent": progress,
-                                        "elapsed_time": str(elapsed).split(".")[
-                                            0
-                                        ],  # Remove microseconds
-                                        "current_size": (
-                                            os.path.getsize(output_file)
-                                            if os.path.exists(output_file)
-                                            else 0
-                                        ),
-                                        "current_time": current_time,
-                                        "last_update": datetime.utcnow().strftime(
-                                            "%Y-%m-%d %H:%M:%S"
-                                        ),
-                                    }
-                                )
-
-                                if progress_callback:
-                                    # Call the callback directly since it now handles task creation
-                                    progress_callback(progress)
-
-                    except Exception as e:
-                        logger.error(f"Error parsing FFmpeg progress: {e}")
-
-                await process.wait()
-                success = os.path.exists(output_file)
-
-                # Update final status
-                if success and input_file in _compression_progress:
-                    _compression_progress[input_file].update(
-                        {
-                            "active": False,
-                            "percent": 100,
-                            "current_size": os.path.getsize(output_file),
-                            "last_update": datetime.utcnow().strftime(
-                                "%Y-%m-%d %H:%M:%S"
-                            ),
-                        }
-                    )
-
-                return success
-
-            finally:
-                # Remove process from tracking
-                async with self._processes_lock:
-                    self._active_processes.discard(process)
-
-        except subprocess.CalledProcessError as e:
-            logger.error(f"FFmpeg compression failed: {e.stderr.decode()}")
-            return False
-        except Exception as e:
-            logger.error(f"Compression attempt failed: {str(e)}")
-            return False
-        finally:
-            # Ensure compression progress is marked as inactive
-            if input_file in _compression_progress:
-                _compression_progress[input_file]["active"] = False
-
-    def _get_video_duration(self, file_path: str) -> float:
-        """Get video duration in seconds"""
-        try:
-            ffprobe_path = str(self.ffmpeg_mgr.get_ffprobe_path())
-            cmd = [
-                ffprobe_path,
-                "-v",
-                "quiet",
-                "-print_format",
-                "json",
-                "-show_format",
-                file_path,
-            ]
-            result = subprocess.run(cmd, capture_output=True, text=True)
-            data = json.loads(result.stdout)
-            return float(data["format"]["duration"])
-        except Exception as e:
-            logger.error(f"Error getting video duration: {e}")
-            return 0
-
-    def _check_file_size(self, info):
-        """Check if file size is within limits"""
-        if info.get("filepath") and os.path.exists(info["filepath"]):
-            try:
-                size = os.path.getsize(info["filepath"])
-                if size > (self.max_file_size * 1024 * 1024):
-                    logger.info(
-                        f"File exceeds size limit, will compress: {info['filepath']}"
-                    )
-            except OSError as e:
-                logger.error(f"Error checking file size: {str(e)}")
-
-    def _verify_video_file(self, file_path: str) -> bool:
-        """Verify video file integrity"""
-        try:
-            ffprobe_path = str(self.ffmpeg_mgr.get_ffprobe_path())
-            cmd = [
-                ffprobe_path,
-                "-v",
-                "quiet",
-                "-print_format",
-                "json",
-                "-show_format",
-                "-show_streams",
-                file_path,
-            ]
-
-            result = subprocess.run(
-                cmd,
-                stdout=subprocess.PIPE,
-                stderr=subprocess.PIPE,
-                text=True,
-                timeout=30,
-            )
-
-            if result.returncode != 0:
-                raise VideoVerificationError(f"FFprobe failed: {result.stderr}")
-
-            probe = json.loads(result.stdout)
-
-            # Verify video stream
-            video_streams = [s for s in probe["streams"] if s["codec_type"] == "video"]
-            if not video_streams:
-                raise VideoVerificationError("No video streams found")
-
-            # Verify duration
-            duration = float(probe["format"].get("duration", 0))
-            if duration <= 0:
-                raise VideoVerificationError("Invalid video duration")
-
-            # Verify file is readable
-            with open(file_path, "rb") as f:
-                f.seek(0, 2)
-                if f.tell() == 0:
-                    raise VideoVerificationError("Empty file")
-
-            return True
-
-        except Exception as e:
-            logger.error(f"Error verifying video file {file_path}: {e}")
-            return False
-
-    async def _safe_download(
-        self,
-        url: str,
-        temp_dir: str,
-        progress_callback: Optional[Callable[[float], None]] = None,
-    ) -> Tuple[bool, str, str]:
-        """Safely download video with retries"""
-        if self._shutting_down:
-            return False, "", "Downloader is shutting down"
-
-        last_error = None
-        for attempt in range(self.MAX_RETRIES):
-            try:
-                ydl_opts = self.ydl_opts.copy()
-                ydl_opts["outtmpl"] = os.path.join(temp_dir, ydl_opts["outtmpl"])
-
-                # Add progress callback
-                if progress_callback:
-                    original_progress_hook = ydl_opts["progress_hooks"][0]
-
-                    def combined_progress_hook(d):
-                        original_progress_hook(d)
-                        if d["status"] == "downloading":
-                            try:
-                                percent = float(
-                                    d.get("_percent_str", "0").replace("%", "")
-                                )
-                                # Call the callback directly since it now handles task creation
-                                progress_callback(percent)
-                            except Exception as e:
-                                logger.error(f"Error in progress callback: {e}")
-
-                    ydl_opts["progress_hooks"] = [combined_progress_hook]
-
-                with yt_dlp.YoutubeDL(ydl_opts) as ydl:
-                    info = await asyncio.get_event_loop().run_in_executor(
-                        self.download_pool, lambda: ydl.extract_info(url, download=True)
-                    )
-
-                if info is None:
-                    raise Exception("Failed to extract video information")
-
-                file_path = os.path.join(temp_dir, ydl.prepare_filename(info))
-                if not os.path.exists(file_path):
-                    raise FileNotFoundError("Download completed but file not found")
-
-                if not self._verify_video_file(file_path):
-                    raise VideoVerificationError("Downloaded file is not a valid video")
-
-                return True, file_path, ""
-
-            except Exception as e:
-                last_error = str(e)
-                logger.error(f"Download attempt {attempt + 1} failed: {str(e)}")
-                if attempt < self.MAX_RETRIES - 1:
-                    # Exponential backoff with jitter
-                    delay = self.RETRY_DELAY * (2**attempt) + (attempt * 2)
-                    await asyncio.sleep(delay)
-                else:
-                    return False, "", f"All download attempts failed: {last_error}"
-
-    async def _safe_delete_file(self, file_path: str) -> bool:
-        """Safely delete a file with retries"""
-        for attempt in range(self.FILE_OP_RETRIES):
-            try:
-                if await secure_delete_file(file_path):
-                    return True
-                await asyncio.sleep(self.FILE_OP_RETRY_DELAY * (attempt + 1))
-            except Exception as e:
-                logger.error(f"Delete attempt {attempt + 1} failed: {str(e)}")
-                if attempt == self.FILE_OP_RETRIES - 1:
-                    return False
-                await asyncio.sleep(self.FILE_OP_RETRY_DELAY * (attempt + 1))
-        return False
-
-    async def _safe_move_file(self, src: str, dst: str) -> bool:
-        """Safely move a file with retries"""
-        for attempt in range(self.FILE_OP_RETRIES):
-            try:
-                os.makedirs(os.path.dirname(dst), exist_ok=True)
-                shutil.move(src, dst)
-                return True
-            except Exception as e:
-                logger.error(f"Move attempt {attempt + 1} failed: {str(e)}")
-                if attempt == self.FILE_OP_RETRIES - 1:
-                    return False
-                await asyncio.sleep(self.FILE_OP_RETRY_DELAY * (attempt + 1))
-        return False