"""加载 bot/.env，供各模块在 import 时统一读取环境变量。"""

from __future__ import annotations

import os
import sys
from pathlib import Path

from dotenv import load_dotenv

_BOT_DIR = Path(__file__).resolve().parent
_REPO_ROOT = _BOT_DIR.parent
if str(_REPO_ROOT) not in sys.path:
    sys.path.insert(0, str(_REPO_ROOT))

load_dotenv(_BOT_DIR / ".env")
load_dotenv(_BOT_DIR / ".env.local", override=True)


def env(key: str, default: str | None = None) -> str | None:
    return os.getenv(key, default)