"""
Django settings for ourstory project.
"""

import os
from pathlib import Path

BASE_DIR = Path(__file__).resolve().parent.parent

SECRET_KEY = os.environ.get(
    "DJANGO_SECRET_KEY",
    "django-insecure-dev-only-change-in-production",
)

DEBUG = os.environ.get("DJANGO_DEBUG", "true").lower() in ("1", "true", "yes")

ALLOWED_HOSTS = [
    h.strip()
    for h in os.environ.get("DJANGO_ALLOWED_HOSTS", "localhost,127.0.0.1").split(",")
    if h.strip()
]

INSTALLED_APPS = [
    "django.contrib.admin",
    "django.contrib.auth",
    "django.contrib.contenttypes",
    "django.contrib.sessions",
    "django.contrib.messages",
    "django.contrib.staticfiles",
    "rest_framework",
    "corsheaders",
    "journal",
]

MIDDLEWARE = [
    "django.middleware.security.SecurityMiddleware",
    "whitenoise.middleware.WhiteNoiseMiddleware",
    "corsheaders.middleware.CorsMiddleware",
    "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 = "ourstory.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 = "ourstory.wsgi.application"

_sqlite_path = os.environ.get("SQLITE_PATH")
DATABASES = {
    "default": {
        "ENGINE": "django.db.backends.sqlite3",
        "NAME": _sqlite_path if _sqlite_path else BASE_DIR / "db.sqlite3",
    }
}

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"},
]

LANGUAGE_CODE = "zh-hans"

TIME_ZONE = "Asia/Shanghai"

USE_I18N = True

USE_TZ = True

MEDIA_URL = "/media/"
_media_root = os.environ.get("MEDIA_ROOT")
MEDIA_ROOT = Path(_media_root) if _media_root else BASE_DIR / "media"

STATIC_URL = "static/"
STATIC_ROOT = BASE_DIR / "staticfiles"

STORAGES = {
    "default": {
        "BACKEND": "django.core.files.storage.FileSystemStorage",
        "OPTIONS": {
            "location": str(MEDIA_ROOT),
            "base_url": MEDIA_URL,
        },
    },
    "staticfiles": {
        "BACKEND": "whitenoise.storage.CompressedStaticFilesStorage",
    },
}

DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"

REST_FRAMEWORK = {
    "DEFAULT_RENDERER_CLASSES": [
        "rest_framework.renderers.JSONRenderer",
    ],
    "DEFAULT_PARSER_CLASSES": [
        "rest_framework.parsers.JSONParser",
    ],
    "DEFAULT_AUTHENTICATION_CLASSES": [],
    "DEFAULT_PERMISSION_CLASSES": [
        "rest_framework.permissions.AllowAny",
    ],
}

_cors_origins = os.environ.get(
    "CORS_ALLOWED_ORIGINS",
    "http://localhost:5173,http://127.0.0.1:5173",
)
CORS_ALLOWED_ORIGINS = [o.strip() for o in _cors_origins.split(",") if o.strip()]
CORS_ALLOW_CREDENTIALS = True

CSRF_TRUSTED_ORIGINS = [
    o.strip() for o in os.environ.get("CSRF_TRUSTED_ORIGINS", "").split(",") if o.strip()
]
# 未配置时至少信任本机 Admin，避免部分环境下保存表单被 CSRF 拦截
if not CSRF_TRUSTED_ORIGINS:
    CSRF_TRUSTED_ORIGINS = [
        "http://127.0.0.1:8963",
        "http://localhost:8963",
    ]