"""
Django settings for api project.

Generated by 'django-admin startproject' using Django 5.1.6.

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

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")

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

DEV = os.getenv("ENV") != "production"

if DEV:
    ALLOWED_HOSTS = ["localhost", "127.0.0.1"]
    CSRF_TRUSTED_ORIGINS = ["http://localhost:3000"]
else:
    ALLOWED_HOSTS = ["web.xuyue.cc", "10.13.114.114"]
    CSRF_TRUSTED_ORIGINS = ["https://web.xuyue.cc", "http://10.13.114.114:91"]

# Application definition

INSTALLED_APPS = [
    "daphne",
    "channels",
    "django.contrib.admin",
    "django.contrib.auth",
    "django.contrib.contenttypes",
    "django.contrib.sessions",
    "django.contrib.messages",
    "django.contrib.staticfiles",
    "ninja",
    "corsheaders",
    "django_extensions",
    "account",
    "task",
    "submission",
    "prompt",
]

MIDDLEWARE = [
    "django.middleware.security.SecurityMiddleware",
    "django.contrib.sessions.middleware.SessionMiddleware",
    "corsheaders.middleware.CorsMiddleware",
    "django.middleware.common.CommonMiddleware",
    "django.middleware.csrf.CsrfViewMiddleware",
    "django.contrib.auth.middleware.AuthenticationMiddleware",
    "django.contrib.messages.middleware.MessageMiddleware",
    "django.middleware.clickjacking.XFrameOptionsMiddleware",
]

ROOT_URLCONF = "api.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 = "api.wsgi.application"
ASGI_APPLICATION = "api.asgi.application"

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

DEV_DATABASES = {
    "default": {
        "ENGINE": "django.db.backends.sqlite3",
        "NAME": BASE_DIR / "db.sqlite3",
    }
}

PROD_DATABASES = {
    "default": {
        "ENGINE": "django.db.backends.postgresql",
        "NAME": os.getenv("POSTGRES_DB"),
        "USER": os.getenv("POSTGRES_USER"),
        "PASSWORD": os.getenv("POSTGRES_PASSWORD"),
        "HOST": os.getenv("POSTGRES_HOST"),
        "PORT": os.getenv("POSTGRES_PORT", "5432"),
    },
}

PROD_CACHES = {
    "default": {
        "BACKEND": "django_redis.cache.RedisCache",
        "LOCATION": os.getenv("REDIS_URL"),
        "OPTIONS": {
            "CLIENT_CLASS": "django_redis.client.DefaultClient",
        },
    }
}

if DEV:
    DATABASES = DEV_DATABASES
else:
    # DATABASES = DEV_DATABASES
    DATABASES = PROD_DATABASES
    # 使用 Redis 作为会话存储
    SESSION_ENGINE = "django.contrib.sessions.backends.cache"
    SESSION_CACHE_ALIAS = "default"
    # 配置缓存
    CACHES = PROD_CACHES

    # WebSocket 的缓存
    CHANNEL_LAYERS = {
        "default": {
            "BACKEND": "channels_redis.core.RedisChannelLayer",
            "CONFIG": {
                "hosts": [(os.getenv("REDIS_HOST"), 6379)],
            },
        },
    }

# 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",
        "OPTIONS": {"min_length": 6},
    },
    # {
    #     '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 = "Asia/Shanghai"

USE_I18N = True

USE_TZ = True


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

STATIC_URL = "django_static/"

STATIC_ROOT = BASE_DIR / "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"

AUTH_USER_MODEL = "account.User"

if DEV:
    CORS_ALLOWED_ORIGINS = ["http://localhost:3000"]
else:
    CORS_ALLOWED_ORIGINS = ["https://web.xuyue.cc"]

CORS_ALLOW_CREDENTIALS = True

NINJA_PAGINATION_CLASS = "ninja.pagination.PageNumberPagination"

NINJA_PAGINATION_PER_PAGE = 10

MEDIA_URL = "/media/"
MEDIA_ROOT = BASE_DIR / "media"

# LLM Configuration
LLM_API_KEY = os.environ.get("LLM_API_KEY", "")
LLM_BASE_URL = os.environ.get("LLM_BASE_URL", "https://api.deepseek.com")
LLM_MODEL = os.environ.get("LLM_MODEL", "deepseek-v4-flash")

# ARK (Volcengine) LLM Configuration
ARK_API_KEY = os.environ.get("ARK_API_KEY", "")
ARK_BASE_URL = os.environ.get("ARK_BASE_URL", "https://ark.cn-beijing.volces.com/api/v3")
