"""
Django settings for green_classroom project.

Generated by 'django-admin startproject' using Django 5.1.

For more information on this file, see
https://docs.djangoproject.com/en/5.1/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/5.1/ref/settings/
"""

import os
from pathlib import Path
from dotenv import load_dotenv

# 加载环境变量
load_dotenv()

# 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/5.1/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = os.getenv('SECRET_KEY', 'django-insecure-_kr!&5j#i!)lo(=u-&5ni+21cwxcq)j-35k!ne20)fyx!u6dnl')

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = os.getenv('DEBUG', 'True').lower() == 'true'

ALLOWED_HOSTS = os.getenv('ALLOWED_HOSTS', 'localhost,127.0.0.1,192.168.9.108,green.yuangyaa.com').split(',')

CSRF_TRUSTED_ORIGINS = os.getenv('CSRF_TRUSTED_ORIGINS', 'https://green.yuangyaa.com').split(',')

# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'core',
    'django_celery_beat',
    'django_celery_results',
    'rest_framework',
    'rest_framework.authtoken',
]

# 导入Admin扩展
# import core.admin_extended  # 暂时注释，避免循环导入

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 = 'green_classroom.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',
            ],
        },
    },
]

WSGI_APPLICATION = 'green_classroom.wsgi.application'

# Database
# https://docs.djangoproject.com/en/5.1/ref/settings/#databases

# 根据环境变量选择数据库
DB_ENGINE = os.getenv('DB_ENGINE', 'django.db.backends.sqlite3')

if DB_ENGINE == 'django.db.backends.postgresql':
    DATABASES = {
        'default': {
            'ENGINE': DB_ENGINE,
            'NAME': os.getenv('DB_NAME', 'green_classroom'),
            'USER': os.getenv('DB_USER', 'postgres'),
            'PASSWORD': os.getenv('DB_PASSWORD', ''),
            'HOST': os.getenv('DB_HOST', 'localhost'),
            'PORT': os.getenv('DB_PORT', '5432'),
            'OPTIONS': {
                'charset': 'utf8mb4',
            },
        }
    }
else:
    DATABASES = {
        'default': {
            'ENGINE': 'django.db.backends.sqlite3',
            'NAME': BASE_DIR / 'db.sqlite3',
        }
    }

# 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 = 'zh-Hans'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_TZ = True

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

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

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

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

# 媒体文件配置
MEDIA_ROOT = os.getenv('MEDIA_ROOT', os.path.join(BASE_DIR, 'data', 'media'))
MEDIA_URL = '/media/'

# Celery配置
CELERY_BROKER_URL = os.getenv('CELERY_BROKER_URL', 'redis://127.0.0.1:6379/0')
CELERY_RESULT_BACKEND = os.getenv('CELERY_RESULT_BACKEND', 'redis://127.0.0.1:6379/0')
CELERY_ACCEPT_CONTENT = ['json']
CELERY_TASK_SERIALIZER = 'json'
CELERY_RESULT_SERIALIZER = 'json'
CELERY_TIMEZONE = TIME_ZONE
CELERY_TASK_TRACK_STARTED = True
CELERY_TASK_TIME_LIMIT = 30 * 60  # 30分钟

# Redis配置
REDIS_URL = os.getenv('REDIS_URL', 'redis://127.0.0.1:6379/0')

# 日志配置
LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'formatters': {
        'verbose': {
            'format': '{levelname} {asctime} {module} {process:d} {thread:d} {message}',
            'style': '{',
        },
        'simple': {
            'format': '{levelname} {message}',
            'style': '{',
        },
    },
    'handlers': {
        'file': {
            'level': os.getenv('LOG_LEVEL', 'INFO'),
            'class': 'logging.FileHandler',
            'filename': os.getenv('LOG_FILE', os.path.join(BASE_DIR, 'data', 'logs', 'django.log')),
            'formatter': 'verbose',
        },
        'console': {
            'level': os.getenv('LOG_LEVEL', 'INFO'),
            'class': 'logging.StreamHandler',
            'formatter': 'simple',
        },
    },
    'root': {
        'handlers': ['console', 'file'],
        'level': os.getenv('LOG_LEVEL', 'INFO'),
    },
    'loggers': {
        'django': {
            'handlers': ['console', 'file'],
            'level': os.getenv('LOG_LEVEL', 'INFO'),
            'propagate': False,
        },
        'core': {
            'handlers': ['console', 'file'],
            'level': os.getenv('LOG_LEVEL', 'INFO'),
            'propagate': False,
        },
    },
}

# 安全设置
if not DEBUG:
    SECURE_BROWSER_XSS_FILTER = True
    SECURE_CONTENT_TYPE_NOSNIFF = True
    X_FRAME_OPTIONS = 'DENY'
    SECURE_HSTS_SECONDS = 31536000
    SECURE_HSTS_INCLUDE_SUBDOMAINS = True
    SECURE_HSTS_PRELOAD = True

# 爬虫设置
CRAWLER_TIMEOUT = int(os.getenv('CRAWLER_TIMEOUT', 30))
CRAWLER_MAX_RETRIES = int(os.getenv('CRAWLER_MAX_RETRIES', 3))
CRAWLER_DELAY = int(os.getenv('CRAWLER_DELAY', 1))

# Selenium设置
SELENIUM_HEADLESS = os.getenv('SELENIUM_HEADLESS', 'True').lower() == 'true'
CHROME_DRIVER_PATH = os.getenv('CHROME_DRIVER_PATH', '/usr/bin/chromedriver')

# Sentry监控（可选）
SENTRY_DSN = os.getenv('SENTRY_DSN')
if SENTRY_DSN:
    import sentry_sdk
    from sentry_sdk.integrations.django import DjangoIntegration

    sentry_sdk.init(
        dsn=SENTRY_DSN,
        integrations=[DjangoIntegration()],
        traces_sample_rate=1.0,
        send_default_pii=True
    )

# Django REST Framework 配置
REST_FRAMEWORK = {
    'DEFAULT_RENDERER_CLASSES': [
        'rest_framework.renderers.JSONRenderer',
        'rest_framework.renderers.BrowsableAPIRenderer',
    ],
    'DEFAULT_PERMISSION_CLASSES': [
        'rest_framework.permissions.IsAuthenticated',
    ],
    'DEFAULT_AUTHENTICATION_CLASSES': [
        'rest_framework.authentication.SessionAuthentication',
        'rest_framework.authentication.TokenAuthentication',
    ],
}

DATA_UPLOAD_MAX_NUMBER_FIELDS = 10240