"""
Django settings for config project.

Generated by 'django-admin startproject' using Django 5.2.15.

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/
"""

import os
from pathlib import Path

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


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

def load_dotenv(path: Path) -> None:
    if not path.exists():
        return
    for raw_line in path.read_text(encoding="utf-8-sig").splitlines():
        line = raw_line.strip()
        if not line or line.startswith("#") or "=" not in line:
            continue
        key, value = line.split("=", 1)
        os.environ.setdefault(key.strip(), value.strip().strip('"').strip("'"))


def env_bool(name: str, default: bool = False) -> bool:
    value = os.environ.get(name)
    if value is None:
        return default
    return value.strip().lower() in {"1", "true", "yes", "on"}


def env_list(name: str, default: str = "") -> list[str]:
    value = os.environ.get(name, default)
    return [item.strip() for item in value.split(",") if item.strip()]


def env_int(name: str, default: int) -> int:
    value = os.environ.get(name)
    if not value:
        return default
    return int(value)


load_dotenv(BASE_DIR / ".env")

# SECURITY WARNING: keep the secret key used in production secret.
SECRET_KEY = os.environ.get("DJANGO_SECRET_KEY", "django-insecure-dev-only-change-me")

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

ALLOWED_HOSTS = env_list("DJANGO_ALLOWED_HOSTS", "127.0.0.1,localhost")


# Application definition

INSTALLED_APPS = [
    'rest_framework',
    'apps.users',
    'apps.portal',
    'apps.billing',
    'apps.ai',
    'apps.api',
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
]

MIDDLEWARE = [
    '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 = 'config.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        '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 = 'config.wsgi.application'

AUTH_USER_MODEL = 'users.User'


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

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'HOST': os.environ.get('MYSQL_HOST', '127.0.0.1'),
        'PORT': env_int('MYSQL_PORT', 3306),
        'NAME': os.environ.get('MYSQL_DATABASE', 'cmhub'),
        'USER': os.environ.get('MYSQL_USER', ''),
        'PASSWORD': os.environ.get('MYSQL_PASSWORD', ''),
        'OPTIONS': {
            'charset': os.environ.get('MYSQL_CHARSET', 'utf8mb4'),
            'init_command': "SET sql_mode='STRICT_TRANS_TABLES'",
        },
    }
}


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

LANGUAGE_CODE = 'zh-hans'

TIME_ZONE = os.environ.get('DJANGO_TIME_ZONE', 'Asia/Shanghai')

USE_I18N = True

USE_TZ = True


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

STATIC_URL = 'static/'

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

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'