"""
Django base settings for ThrillWiki project.
These settings are common across all environments.
"""

from pathlib import Path
import environ

# Build paths
BASE_DIR = Path(__file__).resolve().parent.parent.parent

# Initialize environment variables
env = environ.Env(
    DEBUG=(bool, False),
    ALLOWED_HOSTS=(list, []),
)

# Read .env file if it exists
environ.Env.read_env(BASE_DIR / '.env')

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = env('SECRET_KEY', default='django-insecure-change-this-in-production')

# Application definition
INSTALLED_APPS = [
    # Django Unfold (must come before django.contrib.admin)
    'unfold',
    'unfold.contrib.filters',
    'unfold.contrib.forms',
    'unfold.contrib.import_export',
    
    # Django GIS (must come before admin for proper admin integration)
    'django.contrib.gis',
    
    # Django apps
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    
    # Third-party apps
    'import_export',
    'rest_framework',
    'rest_framework_simplejwt',
    'ninja',
    'django_filters',
    'corsheaders',
    'guardian',
    'django_otp',
    'django_otp.plugins.otp_totp',
    'allauth',
    'allauth.account',
    'allauth.socialaccount',
    'allauth.socialaccount.providers.google',
    'allauth.socialaccount.providers.discord',
    'django_celery_beat',
    'django_celery_results',
    'django_extensions',
    'channels',
    'storages',
    'defender',
    
    # Local apps
    'apps.core',
    'apps.users',
    'apps.entities',
    'apps.moderation',
    'apps.versioning',
    'apps.media',
    'apps.notifications',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'corsheaders.middleware.CorsMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django_otp.middleware.OTPMiddleware',
    'allauth.account.middleware.AccountMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
    'defender.middleware.FailedLoginMiddleware',
]

ROOT_URLCONF = 'config.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [BASE_DIR / 'templates'],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

WSGI_APPLICATION = 'config.wsgi.application'
ASGI_APPLICATION = 'config.asgi.application'

# Database
DATABASES = {
    'default': env.db('DATABASE_URL', default='postgresql://localhost/thrillwiki')
}

# Password validation
AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]

# Internationalization
LANGUAGE_CODE = 'en-us'
TIME_ZONE = 'UTC'
USE_I18N = True
USE_TZ = True

# Static files
STATIC_URL = 'static/'
STATIC_ROOT = BASE_DIR / 'staticfiles'
STATICFILES_DIRS = [BASE_DIR / 'static']

# Media files
MEDIA_URL = 'media/'
MEDIA_ROOT = BASE_DIR / 'media'

# Default primary key field type
DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

# Custom User Model
AUTH_USER_MODEL = 'users.User'

# Authentication Backends
AUTHENTICATION_BACKENDS = [
    'django.contrib.auth.backends.ModelBackend',
    'allauth.account.auth_backends.AuthenticationBackend',
    'guardian.backends.ObjectPermissionBackend',
]

# Django REST Framework
REST_FRAMEWORK = {
    'DEFAULT_AUTHENTICATION_CLASSES': [
        'rest_framework_simplejwt.authentication.JWTAuthentication',
    ],
    'DEFAULT_PERMISSION_CLASSES': [
        'rest_framework.permissions.IsAuthenticatedOrReadOnly',
    ],
    'DEFAULT_FILTER_BACKENDS': [
        'django_filters.rest_framework.DjangoFilterBackend',
    ],
    'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.PageNumberPagination',
    'PAGE_SIZE': 50,
}

# JWT Settings
from datetime import timedelta

SIMPLE_JWT = {
    'ACCESS_TOKEN_LIFETIME': timedelta(minutes=60),
    'REFRESH_TOKEN_LIFETIME': timedelta(days=7),
    'ROTATE_REFRESH_TOKENS': True,
    'BLACKLIST_AFTER_ROTATION': True,
    'ALGORITHM': 'HS256',
    'SIGNING_KEY': SECRET_KEY,
    'AUTH_HEADER_TYPES': ('Bearer',),
}

# CORS Settings
CORS_ALLOWED_ORIGINS = env.list(
    'CORS_ALLOWED_ORIGINS',
    default=['http://localhost:5173', 'http://localhost:3000']
)
CORS_ALLOW_CREDENTIALS = True

# Redis Configuration
REDIS_URL = env('REDIS_URL', default='redis://localhost:6379/0')

# Caching
CACHES = {
    'default': {
        'BACKEND': 'django_redis.cache.RedisCache',
        'LOCATION': REDIS_URL,
        'OPTIONS': {
            'CLIENT_CLASS': 'django_redis.client.DefaultClient',
            'PARSER_CLASS': 'redis.connection.HiredisParser',
        },
        'KEY_PREFIX': 'thrillwiki',
        'TIMEOUT': 300,
    }
}

# Session Configuration
SESSION_ENGINE = 'django.contrib.sessions.backends.cache'
SESSION_CACHE_ALIAS = 'default'
SESSION_COOKIE_AGE = 86400 * 30  # 30 days

# Celery Configuration
CELERY_BROKER_URL = env('CELERY_BROKER_URL', default=REDIS_URL)
CELERY_RESULT_BACKEND = env('CELERY_RESULT_BACKEND', default='redis://localhost:6379/1')
CELERY_ACCEPT_CONTENT = ['json']
CELERY_TASK_SERIALIZER = 'json'
CELERY_RESULT_SERIALIZER = 'json'
CELERY_TIMEZONE = TIME_ZONE
CELERY_TASK_TRACK_STARTED = True
CELERY_TASK_TIME_LIMIT = 30 * 60  # 30 minutes

# Celery Beat Schedule (Periodic Tasks)
from celery.schedules import crontab

CELERY_BEAT_SCHEDULE = {
    # Clean up expired moderation locks every 5 minutes
    'cleanup-expired-locks': {
        'task': 'apps.moderation.tasks.cleanup_expired_locks',
        'schedule': crontab(minute='*/5'),
    },
    # Clean up expired JWT tokens daily at 2 AM
    'cleanup-expired-tokens': {
        'task': 'apps.users.tasks.cleanup_expired_tokens',
        'schedule': crontab(hour=2, minute=0),
    },
    # Update entity statistics every 6 hours
    'update-all-statistics': {
        'task': 'apps.entities.tasks.update_all_statistics',
        'schedule': crontab(hour='*/6', minute=0),
    },
    # Clean up old rejected photos weekly on Monday at 3 AM
    'cleanup-rejected-photos': {
        'task': 'apps.media.tasks.cleanup_rejected_photos',
        'schedule': crontab(day_of_week=1, hour=3, minute=0),
    },
    # Auto-unlock stale reviews every 30 minutes
    'auto-unlock-stale-reviews': {
        'task': 'apps.moderation.tasks.auto_unlock_stale_reviews',
        'schedule': crontab(minute='*/30'),
    },
    # Check moderation queue size every hour
    'check-moderation-queue': {
        'task': 'apps.moderation.tasks.notify_moderators_of_queue_size',
        'schedule': crontab(minute=0),
    },
    # Update photo statistics daily at 1 AM
    'update-photo-statistics': {
        'task': 'apps.media.tasks.update_photo_statistics',
        'schedule': crontab(hour=1, minute=0),
    },
    # Update moderation statistics daily at 1:30 AM
    'update-moderation-statistics': {
        'task': 'apps.moderation.tasks.update_moderation_statistics',
        'schedule': crontab(hour=1, minute=30),
    },
    # Update user statistics daily at 4 AM
    'update-user-statistics': {
        'task': 'apps.users.tasks.update_user_statistics',
        'schedule': crontab(hour=4, minute=0),
    },
    # Calculate global statistics every 12 hours
    'calculate-global-statistics': {
        'task': 'apps.entities.tasks.calculate_global_statistics',
        'schedule': crontab(hour='*/12', minute=0),
    },
}

# Django Channels
CHANNEL_LAYERS = {
    'default': {
        'BACKEND': 'channels_redis.core.RedisChannelLayer',
        'CONFIG': {
            'hosts': [REDIS_URL],
        },
    },
}

# Django Cacheops
CACHEOPS_REDIS = REDIS_URL
CACHEOPS_DEFAULTS = {
    'timeout': 60*15  # 15 minutes
}
CACHEOPS = {
    'entities.park': {'ops': 'all', 'timeout': 60*15},
    'entities.ride': {'ops': 'all', 'timeout': 60*15},
    'entities.company': {'ops': 'all', 'timeout': 60*15},
    'core.*': {'ops': 'all', 'timeout': 60*60},  # 1 hour for reference data
    '*.*': {'timeout': 60*60},
}

# Django Allauth
ACCOUNT_AUTHENTICATION_METHOD = 'email'
ACCOUNT_EMAIL_REQUIRED = True
ACCOUNT_USERNAME_REQUIRED = False
ACCOUNT_EMAIL_VERIFICATION = 'optional'
SITE_ID = 1

# Site Configuration
SITE_URL = env('SITE_URL', default='http://localhost:8000')
DEFAULT_FROM_EMAIL = env('DEFAULT_FROM_EMAIL', default='noreply@thrillwiki.com')

# CloudFlare Images
CLOUDFLARE_ACCOUNT_ID = env('CLOUDFLARE_ACCOUNT_ID', default='')
CLOUDFLARE_IMAGE_TOKEN = env('CLOUDFLARE_IMAGE_TOKEN', default='')
CLOUDFLARE_IMAGE_HASH = env('CLOUDFLARE_IMAGE_HASH', default='')

# Novu
NOVU_API_KEY = env('NOVU_API_KEY', default='')
NOVU_API_URL = env('NOVU_API_URL', default='https://api.novu.co')

# Sentry
SENTRY_DSN = env('SENTRY_DSN', default='')
if SENTRY_DSN:
    import sentry_sdk
    from sentry_sdk.integrations.django import DjangoIntegration
    from sentry_sdk.integrations.celery import CeleryIntegration
    
    sentry_sdk.init(
        dsn=SENTRY_DSN,
        integrations=[
            DjangoIntegration(),
            CeleryIntegration(),
        ],
        traces_sample_rate=0.1,
        send_default_pii=False,
    )

# Logging Configuration
LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'formatters': {
        'verbose': {
            'format': '{levelname} {asctime} {module} {process:d} {thread:d} {message}',
            'style': '{',
        },
        'simple': {
            'format': '{levelname} {message}',
            'style': '{',
        },
    },
    'handlers': {
        'console': {
            'class': 'logging.StreamHandler',
            'formatter': 'verbose',
        },
        'file': {
            'class': 'logging.FileHandler',
            'filename': BASE_DIR / 'logs' / 'django.log',
            'formatter': 'verbose',
        },
    },
    'root': {
        'handlers': ['console'],
        'level': 'INFO',
    },
    'loggers': {
        'django': {
            'handlers': ['console'],
            'level': 'INFO',
            'propagate': False,
        },
        'apps': {
            'handlers': ['console', 'file'],
            'level': 'INFO',
            'propagate': False,
        },
    },
}

# Rate Limiting
RATELIMIT_ENABLE = True
RATELIMIT_USE_CACHE = 'default'

# Django Defender
DEFENDER_LOGIN_FAILURE_LIMIT = 5
DEFENDER_COOLOFF_TIME = 300  # 5 minutes
DEFENDER_LOCKOUT_TEMPLATE = 'defender/lockout.html'

# Django Unfold Configuration
UNFOLD = {
    "SITE_TITLE": "ThrillWiki Admin",
    "SITE_HEADER": "ThrillWiki Administration",
    "SITE_URL": "/",
    "SITE_ICON": {
        "light": lambda request: "/static/logo-light.svg",
        "dark": lambda request: "/static/logo-dark.svg",
    },
    "SITE_SYMBOL": "🎢",
    "SHOW_HISTORY": True,
    "SHOW_VIEW_ON_SITE": True,
    "ENVIRONMENT": "django.conf.settings.DEBUG",
    "DASHBOARD_CALLBACK": "apps.entities.admin.dashboard_callback",
    "COLORS": {
        "primary": {
            "50": "220 252 231",
            "100": "187 247 208",
            "200": "134 239 172",
            "300": "74 222 128",
            "400": "34 197 94",
            "500": "22 163 74",
            "600": "21 128 61",
            "700": "22 101 52",
            "800": "22 78 43",
            "900": "20 83 45",
            "950": "5 46 22",
        },
    },
    "EXTENSIONS": {
        "modeltranslation": {
            "flags": {
                "en": "🇬🇧",
                "fr": "🇫🇷",
                "nl": "🇧🇪",
            },
        },
    },
    "SIDEBAR": {
        "show_search": True,
        "show_all_applications": False,
        "navigation": [
            {
                "title": "Dashboard",
                "icon": "dashboard",
                "link": lambda request: "/admin/",
            },
            {
                "title": "Entities",
                "icon": "category",
                "items": [
                    {
                        "title": "Parks",
                        "icon": "park",
                        "link": lambda request: "/admin/entities/park/",
                    },
                    {
                        "title": "Rides",
                        "icon": "roller_skating",
                        "link": lambda request: "/admin/entities/ride/",
                    },
                    {
                        "title": "Companies",
                        "icon": "business",
                        "link": lambda request: "/admin/entities/company/",
                    },
                    {
                        "title": "Ride Models",
                        "icon": "construction",
                        "link": lambda request: "/admin/entities/ridemodel/",
                    },
                ],
            },
            {
                "title": "User Management",
                "icon": "people",
                "items": [
                    {
                        "title": "Users",
                        "icon": "person",
                        "link": lambda request: "/admin/users/user/",
                    },
                    {
                        "title": "Groups",
                        "icon": "group",
                        "link": lambda request: "/admin/auth/group/",
                    },
                ],
            },
            {
                "title": "Content",
                "icon": "folder",
                "items": [
                    {
                        "title": "Media",
                        "icon": "image",
                        "link": lambda request: "/admin/media/",
                    },
                    {
                        "title": "Moderation",
                        "icon": "verified_user",
                        "link": lambda request: "/admin/moderation/",
                    },
                ],
            },
        ],
    },
}