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thrillwiki_django_no_react/apps/api/v1/views/stats.py
2025-09-21 20:19:12 -04:00

369 lines
12 KiB
Python

"""
Statistics API views for ThrillWiki.
Provides aggregate statistics about the platform's content including
counts of parks, rides, manufacturers, and other entities.
"""
from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework import status
from rest_framework.permissions import AllowAny, IsAdminUser
from django.db.models import Count
from django.core.cache import cache
from django.utils import timezone
from drf_spectacular.utils import extend_schema, OpenApiExample
from datetime import datetime
from apps.parks.models import Park, ParkReview, ParkPhoto, Company as ParkCompany
from apps.rides.models import (
Ride,
RollerCoasterStats,
RideReview,
RidePhoto,
Company as RideCompany,
)
from ..serializers.stats import StatsSerializer
class StatsAPIView(APIView):
"""
API endpoint that returns aggregate statistics about the platform.
Returns counts of various entities like parks, rides, manufacturers, etc.
Results are cached for performance.
"""
permission_classes = [AllowAny]
def _get_relative_time(self, timestamp_str):
"""
Convert an ISO timestamp to a human-readable relative time.
Args:
timestamp_str: ISO format timestamp string
Returns:
str: Human-readable relative time (e.g., "2 days, 3 hours, 15 minutes ago", "just now")
"""
if not timestamp_str or timestamp_str == "just_now":
return "just now"
try:
# Parse the ISO timestamp
if isinstance(timestamp_str, str):
timestamp = datetime.fromisoformat(timestamp_str.replace("Z", "+00:00"))
else:
timestamp = timestamp_str
# Make timezone-aware if needed
if timestamp.tzinfo is None:
timestamp = timezone.make_aware(timestamp)
now = timezone.now()
diff = now - timestamp
total_seconds = int(diff.total_seconds())
# If less than a minute, return "just now"
if total_seconds < 60:
return "just now"
# Calculate time components
days = diff.days
hours = (total_seconds % 86400) // 3600
minutes = (total_seconds % 3600) // 60
# Build the relative time string
parts = []
if days > 0:
parts.append(f'{days} day{"s" if days != 1 else ""}')
if hours > 0:
parts.append(f'{hours} hour{"s" if hours != 1 else ""}')
if minutes > 0:
parts.append(f'{minutes} minute{"s" if minutes != 1 else ""}')
# Join parts with commas and add "ago"
if len(parts) == 0:
return "just now"
elif len(parts) == 1:
return f"{parts[0]} ago"
elif len(parts) == 2:
return f"{parts[0]} and {parts[1]} ago"
else:
return f'{", ".join(parts[:-1])}, and {parts[-1]} ago'
except (ValueError, TypeError):
return "unknown"
@extend_schema(
operation_id="get_platform_stats",
summary="Get platform statistics",
description="""
Returns comprehensive aggregate statistics about the ThrillWiki platform.
This endpoint provides detailed counts and breakdowns of all major entities including:
- Parks, rides, and roller coasters
- Companies (manufacturers, operators, designers, property owners)
- Photos and reviews
- Ride categories (roller coasters, dark rides, flat rides, etc.)
- Status breakdowns (operating, closed, under construction, etc.)
Results are cached for 5 minutes for optimal performance and automatically
invalidated when relevant data changes.
**No authentication required** - this is a public endpoint.
""".strip(),
responses={
200: StatsSerializer,
500: {
"type": "object",
"properties": {
"error": {
"type": "string",
"description": "Error message if statistics calculation fails",
}
},
},
},
tags=["Statistics"],
examples=[
OpenApiExample(
name="Sample Response",
description="Example of platform statistics response",
value={
"total_parks": 7,
"total_rides": 10,
"total_manufacturers": 6,
"total_operators": 7,
"total_designers": 4,
"total_property_owners": 0,
"total_roller_coasters": 8,
"total_photos": 0,
"total_park_photos": 0,
"total_ride_photos": 0,
"total_reviews": 8,
"total_park_reviews": 4,
"total_ride_reviews": 4,
"roller_coasters": 10,
"operating_parks": 7,
"operating_rides": 10,
"last_updated": "2025-08-28T17:34:59.677143+00:00",
"relative_last_updated": "just now",
},
)
],
)
def get(self, request):
"""Get platform statistics."""
# Try to get cached stats first
cache_key = "platform_stats"
cached_stats = cache.get(cache_key)
if cached_stats:
return Response(cached_stats, status=status.HTTP_200_OK)
# Calculate fresh stats
stats = self._calculate_stats()
# Cache for 5 minutes
cache.set(cache_key, stats, 300)
return Response(stats, status=status.HTTP_200_OK)
def _calculate_stats(self):
"""Calculate all platform statistics."""
# Basic entity counts
total_parks = Park.objects.count()
total_rides = Ride.objects.count()
# Company counts by role
total_manufacturers = RideCompany.objects.filter(
roles__contains=["MANUFACTURER"]
).count()
total_operators = ParkCompany.objects.filter(
roles__contains=["OPERATOR"]
).count()
total_designers = RideCompany.objects.filter(
roles__contains=["DESIGNER"]
).count()
total_property_owners = ParkCompany.objects.filter(
roles__contains=["PROPERTY_OWNER"]
).count()
# Photo counts (combined)
total_park_photos = ParkPhoto.objects.count()
total_ride_photos = RidePhoto.objects.count()
total_photos = total_park_photos + total_ride_photos
# Ride type counts
total_roller_coasters = RollerCoasterStats.objects.count()
# Ride category counts
ride_categories = (
Ride.objects.values("category")
.annotate(count=Count("id"))
.exclude(category="")
)
category_stats = {}
for category in ride_categories:
category_code = category["category"]
category_count = category["count"]
# Convert category codes to readable names
category_names = {
"RC": "roller_coasters",
"DR": "dark_rides",
"FR": "flat_rides",
"WR": "water_rides",
"TR": "transport_rides",
"OT": "other_rides",
}
category_name = category_names.get(
category_code, f"category_{category_code.lower()}"
)
category_stats[category_name] = category_count
# Park status counts
park_statuses = Park.objects.values("status").annotate(count=Count("id"))
park_status_stats = {}
for status_item in park_statuses:
status_code = status_item["status"]
status_count = status_item["count"]
# Convert status codes to readable names
status_names = {
"OPERATING": "operating_parks",
"CLOSED_TEMP": "temporarily_closed_parks",
"CLOSED_PERM": "permanently_closed_parks",
"UNDER_CONSTRUCTION": "under_construction_parks",
"DEMOLISHED": "demolished_parks",
"RELOCATED": "relocated_parks",
}
if status_code in status_names:
status_name = status_names[status_code]
else:
raise ValueError(f"Unknown park status: {status_code}")
park_status_stats[status_name] = status_count
# Ride status counts
ride_statuses = Ride.objects.values("status").annotate(count=Count("id"))
ride_status_stats = {}
for status_item in ride_statuses:
status_code = status_item["status"]
status_count = status_item["count"]
# Convert status codes to readable names
status_names = {
"OPERATING": "operating_rides",
"CLOSED_TEMP": "temporarily_closed_rides",
"SBNO": "sbno_rides",
"CLOSING": "closing_rides",
"CLOSED_PERM": "permanently_closed_rides",
"UNDER_CONSTRUCTION": "under_construction_rides",
"DEMOLISHED": "demolished_rides",
"RELOCATED": "relocated_rides",
}
status_name = status_names.get(
status_code, f"ride_status_{status_code.lower()}"
)
ride_status_stats[status_name] = status_count
# Review counts
total_park_reviews = ParkReview.objects.count()
total_ride_reviews = RideReview.objects.count()
total_reviews = total_park_reviews + total_ride_reviews
# Timestamp handling
now = timezone.now()
last_updated_iso = now.isoformat()
# Get cached timestamp or use current time
cached_timestamp = cache.get("platform_stats_timestamp")
if cached_timestamp and cached_timestamp != "just_now":
# Use cached timestamp for consistency
last_updated_iso = cached_timestamp
else:
# Set new timestamp in cache
cache.set("platform_stats_timestamp", last_updated_iso, 300)
# Calculate relative time
relative_last_updated = self._get_relative_time(last_updated_iso)
# Combine all stats
stats = {
# Core entity counts
"total_parks": total_parks,
"total_rides": total_rides,
"total_manufacturers": total_manufacturers,
"total_operators": total_operators,
"total_designers": total_designers,
"total_property_owners": total_property_owners,
"total_roller_coasters": total_roller_coasters,
# Photo counts
"total_photos": total_photos,
"total_park_photos": total_park_photos,
"total_ride_photos": total_ride_photos,
# Review counts
"total_reviews": total_reviews,
"total_park_reviews": total_park_reviews,
"total_ride_reviews": total_ride_reviews,
# Category breakdowns
**category_stats,
# Status breakdowns
**park_status_stats,
**ride_status_stats,
# Metadata
"last_updated": last_updated_iso,
"relative_last_updated": relative_last_updated,
}
return stats
class StatsRecalculateAPIView(APIView):
"""
Admin-only API endpoint to force recalculation of platform statistics.
This endpoint clears the cache and forces a fresh calculation of all statistics.
Only accessible to admin users.
"""
permission_classes = [IsAdminUser]
@extend_schema(exclude=True)
def post(self, request):
"""Force recalculation of platform statistics."""
# Clear the cache
cache.delete("platform_stats")
cache.delete("platform_stats_timestamp")
# Create a new StatsAPIView instance to reuse the calculation logic
stats_view = StatsAPIView()
fresh_stats = stats_view._calculate_stats()
# Cache the fresh stats
cache.set("platform_stats", fresh_stats, 300)
# Return success response with the fresh stats
return Response(
{
"message": "Platform statistics have been successfully recalculated",
"stats": fresh_stats,
"recalculated_at": timezone.now().isoformat(),
},
status=status.HTTP_200_OK,
)