"""
Django settings for amwal project.

Generated by 'django-admin startproject' using Django 5.2.4.

For more information on this file, see
https://docs.djangoproject.com/en/5.2/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/5.2/ref/settings/
"""

from pathlib import Path
import os

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


def env_bool(name, default=False):
    return os.getenv(name, str(default)).lower() in ('1', 'true', 'yes', 'on')


def env_list(name):
    return [item.strip() for item in os.getenv(name, '').split(',') if item.strip()]


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/5.2/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = os.getenv('DJANGO_SECRET_KEY', 'django-insecure-change-me')

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = env_bool('DJANGO_DEBUG', True)

ALLOWED_HOSTS = ['*']
if DEBUG and not ALLOWED_HOSTS:
    ALLOWED_HOSTS = ['*']
if not DEBUG and not ALLOWED_HOSTS:
    raise ValueError('DJANGO_ALLOWED_HOSTS must be set when DJANGO_DEBUG is False.')
if not DEBUG and SECRET_KEY == 'django-insecure-change-me':
    raise ValueError('Set DJANGO_SECRET_KEY for production.')

CSRF_TRUSTED_ORIGINS = env_list('DJANGO_CSRF_TRUSTED_ORIGINS')


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'assets',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'whitenoise.middleware.WhiteNoiseMiddleware',
    '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 = 'amwal.urls'

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

WSGI_APPLICATION = 'amwal.wsgi.application'


# Database
# https://docs.djangoproject.com/en/5.2/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': os.getenv('DB_ENGINE', 'django.db.backends.mysql'),
        'NAME': os.getenv('DB_NAME', 'amwal'),
        'USER': os.getenv('DB_USER', 'amwal_user'),
        'PASSWORD': os.getenv('DB_PASSWORD', 'amwal_password'),
        'HOST': os.getenv('DB_HOST', 'db'),
        'PORT': os.getenv('DB_PORT', '3306'),
        'OPTIONS': {
            'charset': 'utf8mb4',
        },
        'CONN_MAX_AGE': int(os.getenv('DB_CONN_MAX_AGE', '60')),
    }
}


# Password validation
# https://docs.djangoproject.com/en/5.2/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = []


# Internationalization
# https://docs.djangoproject.com/en/5.2/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/5.2/howto/static-files/

STATIC_URL = 'static/'
STATICFILES_DIRS = [
    BASE_DIR / 'static',
]
STATIC_ROOT = BASE_DIR / 'staticfiles'
STATICFILES_STORAGE = 'whitenoise.storage.CompressedStaticFilesStorage'

# Default primary key field type
# https://docs.djangoproject.com/en/5.2/ref/settings/#default-auto-field

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

# Redirect after login (avoid default /accounts/profile/ 404)
LOGIN_REDIRECT_URL = '/'

# Security / proxy settings
USE_X_FORWARDED_HOST = env_bool('DJANGO_USE_X_FORWARDED_HOST', False)
SECURE_SSL_REDIRECT = env_bool('DJANGO_SECURE_SSL_REDIRECT', False)
SESSION_COOKIE_SECURE = env_bool('DJANGO_SESSION_COOKIE_SECURE', not DEBUG)
CSRF_COOKIE_SECURE = env_bool('DJANGO_CSRF_COOKIE_SECURE', not DEBUG)

if env_bool('DJANGO_SECURE_PROXY_SSL_HEADER', False):
    SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')

SECURE_HSTS_SECONDS = int(os.getenv('DJANGO_SECURE_HSTS_SECONDS', '0'))
SECURE_HSTS_INCLUDE_SUBDOMAINS = env_bool('DJANGO_SECURE_HSTS_INCLUDE_SUBDOMAINS', False)
SECURE_HSTS_PRELOAD = env_bool('DJANGO_SECURE_HSTS_PRELOAD', False)
SECURE_REFERRER_POLICY = os.getenv('DJANGO_SECURE_REFERRER_POLICY', 'same-origin')