"""
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 apps
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    
    # Third-party apps
    '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

# 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

# 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'