from pathlib import Path
import os
from pathlib import Path
from datetime import timedelta

# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent
SECRET_KEY =os.getenv("SECRET_KEY")


INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'daphne',
    'django.contrib.staticfiles',
    'corsheaders',
    'rest_framework',
    'rest_framework_simplejwt.token_blacklist',
    'django_extensions',
    'django_filters',
    'drf_yasg',
    'channels',
    'django_seed',
    'api',
    'security',
    
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'corsheaders.middleware.CorsMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
    
]

ROOT_URLCONF = 'backend.urls'
PROJECT_ROOT = os.path.dirname(os.path.abspath(__file__))
STATIC_URL = os.getenv("STATIC_URL",'static/')



STATIC_ROOT = os.getenv('STATIC_ROOT', os.path.join(BASE_DIR, 'staticfiles'))
# Static files (CSS, JavaScript, Images)
STATICFILES_DIRS_PATH = os.getenv('STATICFILES_DIRS_PATH', 'static')
STATICFILES_DIRS = [
    os.path.join(BASE_DIR, STATICFILES_DIRS_PATH),
]




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',
            ],
        },
    },
]

# WSGI_APPLICATION = 'backend.wsgi.application'
ASGI_APPLICATION = 'backend.asgi.application' # asgi for websocket and channels

CHANNEL_LAYERS = {
    'default': {
        'BACKEND': 'channels_redis.core.RedisChannelLayer',
        'CONFIG': {
            "hosts": [('127.0.0.1', 6379)],
        },
    },
}




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 = os.getenv("LANGUAGE_CODE",'en-us')
TIME_ZONE = os.getenv("TIME_ZONE",'UTC')
USE_I18N = True
USE_TZ = True
DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'



REST_FRAMEWORK = {        
    'DEFAULT_AUTHENTICATION_CLASSES': (
            'rest_framework_simplejwt.authentication.JWTAuthentication',
        ),
        
    # 'DEFAULT_PERMISSION_CLASSES': [
    #         'rest_framework.permissions.IsAuthenticated',
    #         'api.permissions.CustomPermission'
    #     ],

    #pagination
    'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.PageNumberPagination',
    'PAGE_SIZE': int(os.getenv("PAGE_SIZE", '10')),  # Number of items per page

    'DEFAULT_FILTER_BACKENDS': ['django_filters.rest_framework.DjangoFilterBackend'],
}

SIMPLE_JWT = {
    "ACCESS_TOKEN_LIFETIME": timedelta(minutes=5),
    "REFRESH_TOKEN_LIFETIME": timedelta(days=1),
    "ROTATE_REFRESH_TOKENS": True,
    "BLACKLIST_AFTER_ROTATION": True,
    "UPDATE_LAST_LOGIN": False,

    "ALGORITHM": "HS256",
    "SIGNING_KEY": SECRET_KEY,
    "VERIFYING_KEY": "",
    "AUDIENCE": None,
    "ISSUER": None,
    "JSON_ENCODER": None,
    "JWK_URL": None,
    "LEEWAY": 0,

    "AUTH_HEADER_TYPES": ("Bearer",),
    "AUTH_HEADER_NAME": "HTTP_AUTHORIZATION",
    "USER_ID_FIELD": "id",
    "USER_ID_CLAIM": "user_id",
    "USER_AUTHENTICATION_RULE": "rest_framework_simplejwt.authentication.default_user_authentication_rule",

    "AUTH_TOKEN_CLASSES": ("rest_framework_simplejwt.tokens.AccessToken",),
    "TOKEN_TYPE_CLAIM": "token_type",
    "TOKEN_USER_CLASS": "rest_framework_simplejwt.models.TokenUser",

    "JTI_CLAIM": "jti",

    "SLIDING_TOKEN_REFRESH_EXP_CLAIM": "refresh_exp",
    "SLIDING_TOKEN_LIFETIME": timedelta(minutes=5),
    "SLIDING_TOKEN_REFRESH_LIFETIME": timedelta(days=1),

    "TOKEN_OBTAIN_SERIALIZER": "rest_framework_simplejwt.serializers.TokenObtainPairSerializer",
    "TOKEN_REFRESH_SERIALIZER": "rest_framework_simplejwt.serializers.TokenRefreshSerializer",
    "TOKEN_VERIFY_SERIALIZER": "rest_framework_simplejwt.serializers.TokenVerifySerializer",
    "TOKEN_BLACKLIST_SERIALIZER": "rest_framework_simplejwt.serializers.TokenBlacklistSerializer",
    "SLIDING_TOKEN_OBTAIN_SERIALIZER": "rest_framework_simplejwt.serializers.TokenObtainSlidingSerializer",
    "SLIDING_TOKEN_REFRESH_SERIALIZER": "rest_framework_simplejwt.serializers.TokenRefreshSlidingSerializer",
}


CORS_ALLOW_ALL_ORIGINS = True

CORS_ALLOW_METHODS = [
    'DELETE',
    'GET',
    'OPTIONS',
    'PATCH',
    'POST',
    'PUT',
]

CORS_ALLOW_HEADERS = [
    'accept',
    'accept-encoding',
    'authorization',
    'content-type',
    'dnt',
    'origin',
    'user-agent',
    'x-csrftoken',
    'x-requested-with',
]



#-----------------------------------------------------------------------------------

EMAIL_BACKEND = os.getenv("EMAIL_BACKEND")
EMAIL_HOST = os.getenv("EMAIL_HOST")
EMAIL_PORT = os.getenv("EMAIL_PORT")
EMAIL_USE_TLS = os.getenv("EMAIL_USE_TLS")
# EMAIL_USE_SSL = os.getenv("EMAIL_USE_SSL") == "False"
EMAIL_HOST_USER = os.getenv("EMAIL_HOST_USER")
DEFAULT_FROM_EMAIL = EMAIL_HOST_USER
EMAIL_HOST_PASSWORD = os.getenv("EMAIL_HOST_PASSWORD")