from pathlib import Path
from decouple import Csv, config
from django.core.exceptions import ImproperlyConfigured

BASE_DIR = Path(__file__).resolve().parent.parent

SECRET_KEY = config('TNAFAPI_SECRET_KEY', default='django-insecure-buzzexpress-key')

DEBUG = config('TNAFAPI_DEBUG', default=True, cast=bool)

ALLOWED_HOSTS = config('TNAFAPI_ALLOWED_HOSTS', default='*', cast=Csv())

if not DEBUG:
    if SECRET_KEY == 'django-insecure-buzzexpress-key':
        raise ImproperlyConfigured('Set TNAFAPI_SECRET_KEY before running with TNAFAPI_DEBUG=False.')
    if '*' in ALLOWED_HOSTS:
        raise ImproperlyConfigured('Set explicit TNAFAPI_ALLOWED_HOSTS before running with TNAFAPI_DEBUG=False.')

INSTALLED_APPS = [
    "admin_interface",
    "colorfield",
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',

    #Third Party
    'django_filters',
    'django_extensions',
    'rest_framework',
    'rest_framework.authtoken',
    'allauth',
    'allauth.account',
    'allauth.socialaccount',
    'dj_rest_auth',
    'dj_rest_auth.registration',
    'drf_yasg',
    'import_export',
    'oauth2_provider',
    'social_django',
    'rest_framework_social_oauth2',
    
    #My Apps
    'tnaf'
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.locale.LocaleMiddleware',
    'django.middleware.common.CommonMiddleware',
    'tnaf.middleware.SimpleCORSMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
    'allauth.account.middleware.AccountMiddleware',
]

ROOT_URLCONF = 'config.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        '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',
                'social_django.context_processors.backends',
                'social_django.context_processors.login_redirect'
            ],
        },
    },
]

WSGI_APPLICATION = 'config.wsgi.application'

DATABASES = {
    'default': {
        'ENGINE': config('TNAFAPI_DB_ENGINE', default='django.db.backends.mysql'),
        'NAME': config('TNAFAPI_DB_NAME', default='movieafrique_user'),
        'USER': config('TNAFAPI_DB_USER', default='movieafrique_user'),
        'PASSWORD': config('TNAFAPI_DB_PASSWORD', default='Y5LWsZ,zM&-R8(p&'),
        'HOST': config('TNAFAPI_DB_HOST', default='localhost'),
        'PORT': config('TNAFAPI_DB_PORT', default='3306'),
        'OPTIONS': {
            'init_command': "SET sql_mode='STRICT_TRANS_TABLES'",
            'charset': 'utf8mb4',
            'collation': 'utf8mb4_unicode_ci',
            'sql_mode': 'STRICT_TRANS_TABLES,NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO',
        }
    }
}

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'},
]

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

STATIC_URL = "static/"
STATIC_ROOT = BASE_DIR / 'staticfiles/'
MEDIA_URL = '/media/'
MEDIA_ROOT = BASE_DIR / 'media/'
TNAFAPI_SERVE_STATIC = config('TNAFAPI_SERVE_STATIC', default=DEBUG, cast=bool)
TNAFAPI_SERVE_MEDIA = config('TNAFAPI_SERVE_MEDIA', default=DEBUG, cast=bool)

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
SILENCED_SYSTEM_CHECKS = config('TNAFAPI_SILENCED_SYSTEM_CHECKS', default='', cast=Csv())

# Frontend URL used for Paystack callback redirects
FRONTEND_BASE_URL = config('FRONTEND_BASE_URL', default='http://127.0.0.1:8080').rstrip('/')
PAYSTACK_CALLBACK_URL = config('PAYSTACK_CALLBACK_URL', default=f'{FRONTEND_BASE_URL}/payment/callback')
PAYSTACK_SECRET_KEY = config('PAYSTACK_SECRET_KEY', default='')
PAYSTACK_DEMO_MODE = config('PAYSTACK_DEMO_MODE', default=DEBUG, cast=bool)

DEFAULT_CORS_ALLOWED_ORIGINS = ','.join(
    dict.fromkeys(
        [
            FRONTEND_BASE_URL,
            'http://127.0.0.1:8080',
            'http://localhost:8080',
            'http://127.0.0.1:5173',
            'http://localhost:5173',
        ]
    )
)
CORS_ALLOWED_ORIGINS = config('TNAFAPI_CORS_ALLOWED_ORIGINS', default=DEFAULT_CORS_ALLOWED_ORIGINS, cast=Csv())
CORS_ALLOW_CREDENTIALS = config('TNAFAPI_CORS_ALLOW_CREDENTIALS', default=True, cast=bool)
CSRF_TRUSTED_ORIGINS = config('TNAFAPI_CSRF_TRUSTED_ORIGINS', default=FRONTEND_BASE_URL, cast=Csv())

REST_FRAMEWORK = {
    'DEFAULT_PERMISSION_CLASSES': [
        'rest_framework.permissions.IsAuthenticated',
    ],
    'DEFAULT_AUTHENTICATION_CLASSES': [
        'tnaf.authentication.ProxyTokenAuthentication',
        'oauth2_provider.contrib.rest_framework.OAuth2Authentication',
        'rest_framework_social_oauth2.authentication.SocialAuthentication',
        'rest_framework.authentication.SessionAuthentication',
    ],
    'DEFAULT_FILTER_BACKENDS': [
        'django_filters.rest_framework.DjangoFilterBackend'
    ],
    'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.PageNumberPagination',
    'PAGE_SIZE': 50,
}

AUTHENTICATION_BACKENDS = [
    'rest_framework_social_oauth2.backends.DjangoOAuth2',
    'social_core.backends.google.GoogleOAuth2',
    'django.contrib.auth.backends.ModelBackend',
    'allauth.account.auth_backends.AuthenticationBackend',
]

SITE_ID = 1
EMAIL_BACKEND = 'django.core.mail.backends.console.EmailBackend'

# django-allauth / dj-rest-auth settings
ACCOUNT_LOGIN_METHODS = {'username'}
ACCOUNT_EMAIL_VERIFICATION = 'none'
ACCOUNT_SIGNUP_FIELDS = ['email', 'username*', 'password1*', 'password2*']

SWAGGER_SETTINGS = {
    'DEFAULT_INFO': 'config.swagger_info.api_info',
}
TNAFAPI_ENABLE_DOCS = config('TNAFAPI_ENABLE_DOCS', default=DEBUG, cast=bool)

# Signed media URL settings
MEDIA_SIGNED_URL_MAX_AGE = config('MEDIA_SIGNED_URL_MAX_AGE', default=3600, cast=int)  # seconds

SECURE_SSL_REDIRECT = config('TNAFAPI_SECURE_SSL_REDIRECT', default=False, cast=bool)
SESSION_COOKIE_SECURE = config('TNAFAPI_SESSION_COOKIE_SECURE', default=not DEBUG, cast=bool)
CSRF_COOKIE_SECURE = config('TNAFAPI_CSRF_COOKIE_SECURE', default=not DEBUG, cast=bool)
SECURE_HSTS_SECONDS = config('TNAFAPI_SECURE_HSTS_SECONDS', default=0, cast=int)
SECURE_HSTS_INCLUDE_SUBDOMAINS = config('TNAFAPI_SECURE_HSTS_INCLUDE_SUBDOMAINS', default=False, cast=bool)
SECURE_HSTS_PRELOAD = config('TNAFAPI_SECURE_HSTS_PRELOAD', default=False, cast=bool)
SECURE_REFERRER_POLICY = config('TNAFAPI_SECURE_REFERRER_POLICY', default='same-origin')
X_FRAME_OPTIONS = config('TNAFAPI_X_FRAME_OPTIONS', default='DENY')

LOG_LEVEL = config('TNAFAPI_LOG_LEVEL', default='INFO')
LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'formatters': {
        'standard': {
            'format': '[{levelname}] {asctime} {name}: {message}',
            'style': '{',
        },
    },
    'handlers': {
        'console': {
            'class': 'logging.StreamHandler',
            'formatter': 'standard',
        },
    },
    'root': {
        'handlers': ['console'],
        'level': LOG_LEVEL,
    },
}