import os
from pathlib import Path

from dotenv import load_dotenv


BASE_DIR = Path(__file__).resolve().parent
load_dotenv(BASE_DIR / ".env")


class Config:
    """业务后端配置，生产环境应通过环境变量注入。"""

    HOST = os.getenv("HOST", "0.0.0.0")
    PORT = int(os.getenv("PORT", "8000"))
    DATABASE_PATH = Path(os.getenv("DATABASE_PATH", BASE_DIR / "data" / "holy_crab.db"))
    FILE_STORAGE_PATH = Path(os.getenv("FILE_STORAGE_PATH", BASE_DIR / "data" / "files"))
    CRAWLER_BASE_URL = os.getenv(
        "CRAWLER_BASE_URL",
        "http://43.139.175.114:12007",
    ).rstrip("/")
    CRAWLER_TIMEOUT_SECONDS = int(os.getenv("CRAWLER_TIMEOUT_SECONDS", "120"))
    CRAWLER_RETRY_TIMES = int(os.getenv("CRAWLER_RETRY_TIMES", "3"))
    CRAWLER_RETRY_DELAY_SECONDS = float(os.getenv("CRAWLER_RETRY_DELAY_SECONDS", "2"))
    CRAWLER_POLL_INTERVAL_SECONDS = float(os.getenv("CRAWLER_POLL_INTERVAL_SECONDS", "5"))
    CORS_ORIGIN = os.getenv("CORS_ORIGIN", "http://localhost:5173")
    FRONTEND_BASE_URL = os.getenv("FRONTEND_BASE_URL", CORS_ORIGIN).rstrip("/")
    SESSION_COOKIE_NAME = os.getenv("SESSION_COOKIE_NAME", "hc_session")
    SESSION_COOKIE_SECURE = os.getenv("SESSION_COOKIE_SECURE", "true").lower() in ("1", "true", "yes", "on")
    SESSION_COOKIE_SAMESITE = os.getenv("SESSION_COOKIE_SAMESITE", "Lax")
    SESSION_EXPIRE_DAYS = int(os.getenv("SESSION_EXPIRE_DAYS", "14"))
    DINGTALK_CLIENT_ID = os.getenv("DINGTALK_CLIENT_ID", os.getenv("DINGTALK_APP_KEY", ""))
    DINGTALK_CLIENT_SECRET = os.getenv("DINGTALK_CLIENT_SECRET", os.getenv("DINGTALK_APP_SECRET", ""))
    DINGTALK_REDIRECT_URI = os.getenv(
        "DINGTALK_REDIRECT_URI",
        f"{FRONTEND_BASE_URL}/api/v1/auth/dingtalk/callback",
    )
    DINGTALK_AUTH_URL = os.getenv("DINGTALK_AUTH_URL", "https://login.dingtalk.com/oauth2/auth")
    DINGTALK_TOKEN_URL = os.getenv("DINGTALK_TOKEN_URL", "https://api.dingtalk.com/v1.0/oauth2/userAccessToken")
    DINGTALK_USER_URL = os.getenv("DINGTALK_USER_URL", "https://api.dingtalk.com/v1.0/contact/users/me")