Pac-cogs/videoarchiver/core/base.py

"""Base module containing core VideoArchiver class"""

from __future__ import annotations

import discord
import traceback
from redbot.core import Config, data_manager
from redbot.core.bot import Red
from redbot.core.commands import (
    GroupCog, 
    Context, 
    hybrid_command, 
    hybrid_group,
    guild_only
)
from redbot.core import checks
from discord import app_commands
import logging
import asyncio
from pathlib import Path
from typing import Dict, Any, Optional

from ..config_manager import ConfigManager
from ..update_checker import UpdateChecker
from ..processor import VideoProcessor
from ..utils.video_downloader import VideoDownloader
from ..utils.message_manager import MessageManager
from ..utils.file_ops import cleanup_downloads
from ..queue import EnhancedVideoQueueManager
from ..ffmpeg.ffmpeg_manager import FFmpegManager
from ..database.video_archive_db import VideoArchiveDB
from ..utils.exceptions import (
    VideoArchiverError as ProcessingError,
    ConfigurationError as ConfigError,
)

from .guild import initialize_guild_components
from .cleanup import cleanup_resources, force_cleanup_resources
from .events import setup_events

logger = logging.getLogger("VideoArchiver")

# Constants for timeouts - more reasonable timeouts
UNLOAD_TIMEOUT = 30  # seconds
CLEANUP_TIMEOUT = 15  # seconds
INIT_TIMEOUT = 60    # seconds
COMPONENT_INIT_TIMEOUT = 30  # seconds

class VideoArchiver(GroupCog):
    """Archive videos from Discord channels"""

    default_guild_settings = {
        "enabled": False,
        "archive_channel": None,
        "log_channel": None,
        "enabled_channels": [],
        "video_format": "mp4",
        "video_quality": "high",
        "max_file_size": 8,  # MB
        "message_duration": 30,  # seconds
        "message_template": "{author} archived a video from {channel}",
        "concurrent_downloads": 2,
        "enabled_sites": None,  # None means all sites
        "use_database": False,  # Database tracking is off by default
    }

    def __init__(self, bot: Red) -> None:
        """Initialize the cog with proper error handling"""
        super().__init__()
        self.bot = bot
        self.ready = asyncio.Event()
        self._init_task: Optional[asyncio.Task] = None
        self._cleanup_task: Optional[asyncio.Task] = None
        self._unloading = False
        self.db = None
        self.queue_manager = None
        self.processor = None
        self.components = {}

        # Start initialization
        self._init_task = asyncio.create_task(self._initialize())
        self._init_task.add_done_callback(self._init_callback)

        # Set up events
        setup_events(self)

    @hybrid_group(name="archivedb", fallback="help")
    @guild_only()
    async def archivedb(self, ctx: Context):
        """Manage the video archive database."""
        if ctx.invoked_subcommand is None:
            await ctx.send_help(ctx.command)

    @archivedb.command(name="enable")
    @guild_only()
    @checks.admin_or_permissions(administrator=True)
    async def enable_database(self, ctx: Context):
        """Enable the video archive database."""
        try:
            current_setting = await self.config_manager.get_setting(
                ctx.guild.id, "use_database"
            )
            if current_setting:
                await ctx.send("The video archive database is already enabled.")
                return

            # Initialize database if it's being enabled
            self.db = VideoArchiveDB(self.data_path)
            # Update processor with database
            self.processor.db = self.db
            self.processor.queue_handler.db = self.db

            await self.config_manager.update_setting(ctx.guild.id, "use_database", True)
            await ctx.send("Video archive database has been enabled.")

        except Exception as e:
            logger.error(f"Error enabling database: {e}")
            await ctx.send("An error occurred while enabling the database.")

    @archivedb.command(name="disable")
    @guild_only()
    @checks.admin_or_permissions(administrator=True)
    async def disable_database(self, ctx: Context):
        """Disable the video archive database."""
        try:
            current_setting = await self.config_manager.get_setting(
                ctx.guild.id, "use_database"
            )
            if not current_setting:
                await ctx.send("The video archive database is already disabled.")
                return

            # Remove database references
            self.db = None
            self.processor.db = None
            self.processor.queue_handler.db = None

            await self.config_manager.update_setting(ctx.guild.id, "use_database", False)
            await ctx.send("Video archive database has been disabled.")

        except Exception as e:
            logger.error(f"Error disabling database: {e}")
            await ctx.send("An error occurred while disabling the database.")

    @hybrid_command()
    @guild_only()
    @app_commands.describe(url="The URL of the video to check")
    async def checkarchived(self, ctx: Context, url: str):
        """Check if a video URL has been archived and get its Discord link if it exists."""
        try:
            if not self.db:
                await ctx.send(
                    "The archive database is not enabled. Ask an admin to enable it with `/archivedb enable`"
                )
                return

            result = self.db.get_archived_video(url)
            if result:
                discord_url, message_id, channel_id, guild_id = result
                embed = discord.Embed(
                    title="Video Found in Archive",
                    description=f"This video has been archived!\n\nOriginal URL: {url}",
                    color=discord.Color.green(),
                )
                embed.add_field(name="Archived Link", value=discord_url)
                await ctx.send(embed=embed)
            else:
                embed = discord.Embed(
                    title="Video Not Found",
                    description="This video has not been archived yet.",
                    color=discord.Color.red(),
                )
                await ctx.send(embed=embed)
        except Exception as e:
            logger.error(f"Error checking archived video: {e}")
            await ctx.send("An error occurred while checking the archive.")

    @hybrid_group(name="archiver", fallback="help")
    @guild_only()
    async def archiver(self, ctx: Context):
        """Manage video archiver settings."""
        if ctx.invoked_subcommand is None:
            await ctx.send_help(ctx.command)

    @archiver.command(name="enable")
    @guild_only()
    @checks.admin_or_permissions(administrator=True)
    async def enable_archiver(self, ctx: Context):
        """Enable video archiving in this server."""
        try:
            current_setting = await self.config_manager.get_setting(
                ctx.guild.id, "enabled"
            )
            if current_setting:
                await ctx.send("Video archiving is already enabled.")
                return

            await self.config_manager.update_setting(ctx.guild.id, "enabled", True)
            await ctx.send("Video archiving has been enabled.")

        except Exception as e:
            logger.error(f"Error enabling archiver: {e}")
            await ctx.send("An error occurred while enabling video archiving.")

    @archiver.command(name="disable")
    @guild_only()
    @checks.admin_or_permissions(administrator=True)
    async def disable_archiver(self, ctx: Context):
        """Disable video archiving in this server."""
        try:
            current_setting = await self.config_manager.get_setting(
                ctx.guild.id, "enabled"
            )
            if not current_setting:
                await ctx.send("Video archiving is already disabled.")
                return

            await self.config_manager.update_setting(ctx.guild.id, "enabled", False)
            await ctx.send("Video archiving has been disabled.")

        except Exception as e:
            logger.error(f"Error disabling archiver: {e}")
            await ctx.send("An error occurred while disabling video archiving.")

    @archiver.command(name="setchannel")
    @guild_only()
    @checks.admin_or_permissions(administrator=True)
    @app_commands.describe(channel="The channel where archived videos will be stored")
    async def set_archive_channel(self, ctx: Context, channel: discord.TextChannel):
        """Set the channel where archived videos will be stored."""
        try:
            await self.config_manager.update_setting(
                ctx.guild.id, "archive_channel", channel.id
            )
            await ctx.send(f"Archive channel has been set to {channel.mention}.")
        except Exception as e:
            logger.error(f"Error setting archive channel: {e}")
            await ctx.send("An error occurred while setting the archive channel.")

    @archiver.command(name="setlog")
    @guild_only()
    @checks.admin_or_permissions(administrator=True)
    @app_commands.describe(channel="The channel where log messages will be sent")
    async def set_log_channel(self, ctx: Context, channel: discord.TextChannel):
        """Set the channel where log messages will be sent."""
        try:
            await self.config_manager.update_setting(
                ctx.guild.id, "log_channel", channel.id
            )
            await ctx.send(f"Log channel has been set to {channel.mention}.")
        except Exception as e:
            logger.error(f"Error setting log channel: {e}")
            await ctx.send("An error occurred while setting the log channel.")

    @archiver.command(name="addchannel")
    @guild_only()
    @checks.admin_or_permissions(administrator=True)
    @app_commands.describe(channel="The channel to monitor for videos")
    async def add_enabled_channel(self, ctx: Context, channel: discord.TextChannel):
        """Add a channel to monitor for videos."""
        try:
            enabled_channels = await self.config_manager.get_setting(
                ctx.guild.id, "enabled_channels"
            )
            if channel.id in enabled_channels:
                await ctx.send(f"{channel.mention} is already being monitored.")
                return

            enabled_channels.append(channel.id)
            await self.config_manager.update_setting(
                ctx.guild.id, "enabled_channels", enabled_channels
            )
            await ctx.send(f"Now monitoring {channel.mention} for videos.")
        except Exception as e:
            logger.error(f"Error adding enabled channel: {e}")
            await ctx.send("An error occurred while adding the channel.")

    @archiver.command(name="removechannel")
    @guild_only()
    @checks.admin_or_permissions(administrator=True)
    @app_commands.describe(channel="The channel to stop monitoring")
    async def remove_enabled_channel(self, ctx: Context, channel: discord.TextChannel):
        """Remove a channel from video monitoring."""
        try:
            enabled_channels = await self.config_manager.get_setting(
                ctx.guild.id, "enabled_channels"
            )
            if channel.id not in enabled_channels:
                await ctx.send(f"{channel.mention} is not being monitored.")
                return

            enabled_channels.remove(channel.id)
            await self.config_manager.update_setting(
                ctx.guild.id, "enabled_channels", enabled_channels
            )
            await ctx.send(f"Stopped monitoring {channel.mention} for videos.")
        except Exception as e:
            logger.error(f"Error removing enabled channel: {e}")
            await ctx.send("An error occurred while removing the channel.")

    async def cog_command_error(self, ctx: Context, error: Exception) -> None:
        """Handle command errors"""
        error_msg = None
        try:
            if isinstance(error, commands.MissingPermissions):
                error_msg = "❌ You don't have permission to use this command."
            elif isinstance(error, commands.BotMissingPermissions):
                error_msg = "❌ I don't have the required permissions to do that."
            elif isinstance(error, commands.MissingRequiredArgument):
                error_msg = f"❌ Missing required argument: {error.param.name}"
            elif isinstance(error, commands.BadArgument):
                error_msg = f"❌ Invalid argument: {str(error)}"
            elif isinstance(error, ConfigError):
                error_msg = f"❌ Configuration error: {str(error)}"
            elif isinstance(error, ProcessingError):
                error_msg = f"❌ Processing error: {str(error)}"
            else:
                logger.error(
                    f"Command error in {ctx.command}: {traceback.format_exc()}"
                )
                error_msg = (
                    "❌ An unexpected error occurred. Check the logs for details."
                )

            if error_msg:
                await ctx.send(error_msg)

        except Exception as e:
            logger.error(f"Error handling command error: {str(e)}")
            try:
                await ctx.send(
                    "❌ An error occurred while handling another error. Please check the logs."
                )
            except Exception:
                pass

    def _init_callback(self, task: asyncio.Task) -> None:
        """Handle initialization task completion"""
        try:
            task.result()
            logger.info("Initialization completed successfully")
        except asyncio.CancelledError:
            logger.warning("Initialization was cancelled")
            asyncio.create_task(self._cleanup())
        except Exception as e:
            logger.error(f"Initialization failed: {str(e)}\n{traceback.format_exc()}")
            asyncio.create_task(self._cleanup())

    async def _initialize(self) -> None:
        """Initialize all components with proper error handling and timeouts"""
        try:
            # Initialize config first as other components depend on it
            config = Config.get_conf(self, identifier=855847, force_registration=True)
            config.register_guild(**self.default_guild_settings)
            self.config_manager = ConfigManager(config)
            logger.info("Config manager initialized")

            # Set up paths
            self.data_path = Path(data_manager.cog_data_path(self))
            self.download_path = self.data_path / "downloads"
            self.download_path.mkdir(parents=True, exist_ok=True)
            logger.info("Paths initialized")

            # Clean existing downloads with timeout
            try:
                await asyncio.wait_for(
                    cleanup_downloads(str(self.download_path)), 
                    timeout=CLEANUP_TIMEOUT
                )
                logger.info("Downloads cleaned up")
            except asyncio.TimeoutError:
                logger.warning("Download cleanup timed out, continuing initialization")

            # Initialize shared FFmpeg manager
            self.ffmpeg_mgr = FFmpegManager()
            logger.info("FFmpeg manager initialized")

            # Initialize queue manager before components
            queue_path = self.data_path / "queue_state.json"
            queue_path.parent.mkdir(parents=True, exist_ok=True)
            self.queue_manager = EnhancedVideoQueueManager(
                max_retries=3,
                retry_delay=5,
                max_queue_size=1000,
                cleanup_interval=1800,
                max_history_age=86400,
                persistence_path=str(queue_path),
            )
            logger.info("Queue manager initialized")

            # Initialize processor with queue manager and shared FFmpeg manager
            self.processor = VideoProcessor(
                self.bot,
                self.config_manager,
                self.components,
                queue_manager=self.queue_manager,
                ffmpeg_mgr=self.ffmpeg_mgr,
                db=self.db,  # Pass database to processor (None by default)
            )
            logger.info("Video processor initialized")

            # Initialize components for existing guilds with timeout
            for guild in self.bot.guilds:
                try:
                    await asyncio.wait_for(
                        initialize_guild_components(self, guild.id),
                        timeout=COMPONENT_INIT_TIMEOUT
                    )
                    logger.info(f"Guild {guild.id} components initialized")
                except asyncio.TimeoutError:
                    logger.error(f"Guild {guild.id} initialization timed out")
                    continue
                except Exception as e:
                    logger.error(f"Failed to initialize guild {guild.id}: {str(e)}")
                    continue

            # Initialize update checker
            self.update_checker = UpdateChecker(self.bot, self.config_manager)
            logger.info("Update checker initialized")

            # Start update checker with timeout
            try:
                await asyncio.wait_for(
                    self.update_checker.start(),
                    timeout=INIT_TIMEOUT
                )
                logger.info("Update checker started")
            except asyncio.TimeoutError:
                logger.warning("Update checker start timed out")

            # Start queue processing as a background task
            self._queue_task = asyncio.create_task(
                self.queue_manager.process_queue(self.processor.process_video)
            )
            logger.info("Queue processing task created")

            # Set ready flag
            self.ready.set()
            logger.info("VideoArchiver initialization completed successfully")

        except Exception as e:
            logger.error(f"Critical error during initialization: {str(e)}\n{traceback.format_exc()}")
            # Force cleanup on initialization error
            try:
                await asyncio.wait_for(
                    force_cleanup_resources(self),
                    timeout=CLEANUP_TIMEOUT
                )
            except asyncio.TimeoutError:
                logger.error("Force cleanup during initialization timed out")
            raise

    async def cog_load(self) -> None:
        """Handle cog loading with proper timeout"""
        try:
            # Create initialization task
            init_task = asyncio.create_task(self._initialize())
            try:
                # Wait for initialization with timeout
                await asyncio.wait_for(init_task, timeout=INIT_TIMEOUT)
                logger.info("Initialization completed within timeout")
            except asyncio.TimeoutError:
                logger.error("Initialization timed out, forcing cleanup")
                init_task.cancel()
                await force_cleanup_resources(self)
                raise ProcessingError("Cog initialization timed out")

            # Wait for ready flag with timeout
            try:
                await asyncio.wait_for(self.ready.wait(), timeout=INIT_TIMEOUT)
                logger.info("Ready flag set within timeout")
            except asyncio.TimeoutError:
                await force_cleanup_resources(self)
                raise ProcessingError("Ready flag wait timed out")

        except Exception as e:
            # Ensure cleanup on any error
            try:
                await asyncio.wait_for(
                    force_cleanup_resources(self),
                    timeout=CLEANUP_TIMEOUT
                )
            except asyncio.TimeoutError:
                logger.error("Force cleanup during load error timed out")
            raise ProcessingError(f"Error during cog load: {str(e)}")

    async def cog_unload(self) -> None:
        """Clean up when cog is unloaded with proper timeout handling"""
        self._unloading = True
        try:
            # Cancel any pending tasks
            if self._init_task and not self._init_task.done():
                self._init_task.cancel()

            if self._cleanup_task and not self._cleanup_task.done():
                self._cleanup_task.cancel()

            # Cancel queue processing task if it exists
            if hasattr(self, '_queue_task') and self._queue_task and not self._queue_task.done():
                self._queue_task.cancel()
                try:
                    await self._queue_task
                except asyncio.CancelledError:
                    pass
                except Exception as e:
                    logger.error(f"Error cancelling queue task: {e}")

            # Try normal cleanup first
            cleanup_task = asyncio.create_task(cleanup_resources(self))
            try:
                await asyncio.wait_for(cleanup_task, timeout=UNLOAD_TIMEOUT)
                logger.info("Normal cleanup completed")
            except (asyncio.TimeoutError, Exception) as e:
                if isinstance(e, asyncio.TimeoutError):
                    logger.warning("Normal cleanup timed out, forcing cleanup")
                else:
                    logger.error(f"Error during normal cleanup: {str(e)}")

                # Cancel normal cleanup and force cleanup
                cleanup_task.cancel()
                try:
                    # Force cleanup with timeout
                    await asyncio.wait_for(
                        force_cleanup_resources(self),
                        timeout=CLEANUP_TIMEOUT
                    )
                    logger.info("Force cleanup completed")
                except asyncio.TimeoutError:
                    logger.error("Force cleanup timed out")
                except Exception as e:
                    logger.error(f"Error during force cleanup: {str(e)}")

        except Exception as e:
            logger.error(f"Error during cog unload: {str(e)}")
        finally:
            self._unloading = False
            # Ensure ready flag is cleared
            self.ready.clear()
            # Clear all references
            self.bot = None
            self.processor = None
            self.queue_manager = None
            self.update_checker = None
            self.ffmpeg_mgr = None
            self.components.clear()
            self.db = None
            self._init_task = None
            self._cleanup_task = None
            if hasattr(self, '_queue_task'):
                self._queue_task = None

    async def _cleanup(self) -> None:
        """Clean up all resources with proper handling"""
        try:
            await asyncio.wait_for(cleanup_resources(self), timeout=CLEANUP_TIMEOUT)
            logger.info("Cleanup completed successfully")
        except asyncio.TimeoutError:
            logger.warning("Cleanup timed out, forcing cleanup")
            try:
                await asyncio.wait_for(
                    force_cleanup_resources(self), timeout=CLEANUP_TIMEOUT
                )
                logger.info("Force cleanup completed")
            except asyncio.TimeoutError:
                logger.error("Force cleanup timed out")