import os
from pathlib import Path
from decouple import Config, Csv, RepositoryEnv
from datetime import timedelta # This is for the JWT token expiration time
# from pymongo import MongoClient #this is mongo
from pymongo.mongo_client import MongoClient
from pymongo.server_api import ServerApi
from dotenv import load_dotenv #i'm having problems getting in env

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

env_path = BASE_DIR / '.env' 
config = Config(RepositoryEnv(env_path))

# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/5.1/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = config('DJANGO_SECRET_KEY') # config(): get the value of the key from the .env file. Config() is the class itself

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = config('DJANGO_DEBUG', default=False, cast=bool)

ALLOWED_HOSTS = config('DJANGO_ALLOWED_HOSTS', default='localhost', cast=Csv())

# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'rest_framework',
    'rest_framework_simplejwt',
    'corsheaders',
    'users',
    'drf_yasg',
    'rest_framework_simplejwt.token_blacklist', # Invalidates tokens (e.g., after logout)
    'api_keys',
    'map',
]

CORS_ALLOW_CREDENTIALS = config('CORS_ALLOW_CREDENTIALS', default=True, cast=bool)

CORS_ALLOW_HEADERS = [
    'content-type',
    'x-api-key',
] # Update by adding to env template when needed

CORS_ALLOWED_ORIGINS = config('CORS_ALLOWED_ORIGINS', default='http://localhost:3000', cast=Csv())

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

ROOT_URLCONF = 'sightseeing_map.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [os.path.join(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 = 'sightseeing_map.wsgi.application'


# Database: See .env.template for the database configuration
# https://docs.djangoproject.com/en/5.1/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': BASE_DIR / 'db.sqlite3',
    }
}


load_dotenv() #try to load from env

MONGO_URI = os.getenv("MONGO_URI")

client = MongoClient(MONGO_URI)
MONGO_DB = client["sightseeing_maps"] #database_name


# Password validation
# https://docs.djangoproject.com/en/5.1/ref/settings/#auth-password-validators

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
# https://docs.djangoproject.com/en/5.1/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = config('DJANGO_TIME_ZONE', default='UTC')

USE_I18N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/5.1/howto/static-files/

STATIC_ROOT = os.path.join(BASE_DIR, 'staticfiles')
STATIC_URL = '/static/'

MEDIA_URL = '/media/'
MEDIA_ROOT = BASE_DIR / 'media'

# Default primary key field type
# https://docs.djangoproject.com/en/5.1/ref/settings/#default-auto-field

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

# REST Framework settings
REST_FRAMEWORK = {
    'DEFAULT_AUTHENTICATION_CLASSES': (
        'rest_framework_simplejwt.authentication.JWTAuthentication',
    ),
    'DEFAULT_PERMISSION_CLASSES': (
        'rest_framework.permissions.IsAuthenticated',
    ), # This is to make sure that all endpoints are protected by default 
}

# Simple JWT settings
SIMPLE_JWT = {
    "ACCESS_TOKEN_LIFETIME": timedelta(minutes=5),
    "REFRESH_TOKEN_LIFETIME": timedelta(days=1),
    "AUTH_HEADER_TYPES": ("Bearer",),
    "ROTATE_REFRESH_TOKENS": True, 
    "BLACKLIST_AFTER_ROTATION": True, 
    "SIGNING_KEY": SECRET_KEY,
    "ALGORITHM": "HS256", 
}

# Email settings
EMAIL_BACKEND = config('DJANGO_EMAIL_BACKEND', default='django.core.mail.backends.smtp.EmailBackend')
EMAIL_HOST = config('DJANGO_EMAIL_HOST', default='localhost')
EMAIL_PORT = config('DJANGO_EMAIL_PORT', default=587, cast=int)
EMAIL_USE_TLS = config('DJANGO_EMAIL_USE_TLS', default=True, cast=bool)
EMAIL_USE_SSL = config('DJANGO_EMAIL_USE_SSL', default=False, cast=bool)
EMAIL_HOST_USER = config('DJANGO_EMAIL_HOST_USER', default='')
EMAIL_HOST_PASSWORD = config('DJANGO_EMAIL_HOST_PASSWORD', default='')
DEFAULT_FROM_EMAIL = config('DJANGO_DEFAULT_FROM_EMAIL', default='webmaster@localhost')

# Frontend URL
FRONTEND_URL = config('FRONTEND_URL', default='http://localhost:3000')