"""
Django settings for framework project.

Generated by 'django-admin startproject' using Django 4.2.

For more information on this file, see
https://docs.djangoproject.com/en/4.2/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/4.2/ref/settings/
"""
import time
from pathlib import Path
import os
from app.utils.Secrets import get_runtime_secret
# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent
PROJECT_UA = "monitor"
PROJECT_BUILT = "monitor built on 2026/08/06"
PROJECT_VERSION = "1.003"
PROJECT_FLAG = "monitor" # monitor
PROJECT_ADMIN_START_TIMESTAMP = int(time.time()) # 软件启动时间戳（秒单位）

# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/4.2/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = get_runtime_secret("django_secret_key")
MONITOR_INTERNAL_API_SECRET = get_runtime_secret("internal_api_secret")


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


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

# SECURITY WARNING: don't run with debug turned on in production!
# Production-safe by default. Local development must opt in explicitly.
DEBUG = env_bool("MONITOR_DEBUG", False)

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

# Application definition

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

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.middleware.gzip.GZipMiddleware',  # 启用 Gzip 压缩，提升响应性能
    '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',
    "app.middleware.SimpleMiddleware",  # 拦截器
]

ROOT_URLCONF = 'framework.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',
                'django.template.context_processors.csrf',
                'app.context_processors.lang_processor',
            ],
        },
    },
]

WSGI_APPLICATION = 'framework.wsgi.application'


# Database
# https://docs.djangoproject.com/en/4.2/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': BASE_DIR / 'monitor.sqlite3',
        # SQLite 性能优化：见下方 connection_created 信号中的 PRAGMA 设置
        'OPTIONS': {
            'timeout': 20,  # Python 端连接超时（秒）
        },
    }
}

# Password validation
# https://docs.djangoproject.com/en/4.2/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/2.0/topics/i18n/

#LANGUAGE_CODE = 'zh-hans'
#LANGUAGE_CODE = 'en'
#TIME_ZONE = 'UTC'
USE_I18N = True # 启用国际化
# USE_L10N = True # 启用本地化（如日期、数字格式）
USE_TZ = False
# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/2.0/howto/static-files/

STATIC_URL = '/static/'
STATIC_ROOT = os.path.join(BASE_DIR, 'staticfiles')
LANGUAGE_CODE = 'zh-hans'
TIME_ZONE = 'Asia/Shanghai'

""" 静态资源（DEBUG=True：staticfiles 从 STATICFILES_DIRS 直接提供） """
STATICFILES_DIRS = (
    os.path.join(BASE_DIR, "static"),
)

SESSION_COOKIE_NAME = 'MonitorSessionID'
SESSION_EXPIRE_AT_BROWSER_CLOSE=False #会话cookie可以在用户浏览器中保持有效期  True：关闭浏览器则Cookie失效。
DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
# 防止暴力破解
SESSION_COOKIE_AGE=7*24*60*60   # session过期，单位（秒） 7天=7*24*60*60，1小时=1*60*60
SESSION_COOKIE_HTTPONLY = True
SESSION_COOKIE_SAMESITE = 'Lax'
CSRF_COOKIE_SAMESITE = 'Lax'
CSRF_TRUSTED_ORIGINS = env_list("MONITOR_CSRF_TRUSTED_ORIGINS")

X_FRAME_OPTIONS = 'SAMEORIGIN'

MONITOR_HTTPS = env_bool("MONITOR_HTTPS", False)
SESSION_COOKIE_SECURE = MONITOR_HTTPS
CSRF_COOKIE_SECURE = MONITOR_HTTPS
SECURE_SSL_REDIRECT = MONITOR_HTTPS and env_bool("MONITOR_SSL_REDIRECT", True)
SECURE_HSTS_SECONDS = 31536000 if MONITOR_HTTPS else 0
SECURE_HSTS_INCLUDE_SUBDOMAINS = MONITOR_HTTPS
SECURE_HSTS_PRELOAD = MONITOR_HTTPS
SECURE_CONTENT_TYPE_NOSNIFF = True
if env_bool("MONITOR_TRUST_PROXY_HEADERS", False):
    SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')

# Multipart model files are streamed to disk; ordinary request bodies stay bounded.
DATA_UPLOAD_MAX_MEMORY_SIZE = int(os.environ.get("MONITOR_MAX_REQUEST_MEMORY", 16 * 1024 * 1024))
FILE_UPLOAD_MAX_MEMORY_SIZE = int(os.environ.get("MONITOR_FILE_MEMORY_THRESHOLD", 2 * 1024 * 1024))