from __future__ import annotations

import os

from dotenv import load_dotenv
from dataclasses import dataclass
from functools import lru_cache


@dataclass(frozen=True)
class Settings:
    feishu_app_id: str
    feishu_app_secret: str
    feishu_verify_token: str
    feishu_encrypt_key: str
    feishu_ws_url: str

    huobanyun_app_id: str
    huobanyun_app_secret: str
    huobanyun_token: str
    huobanyun_api_key: str
    huobanyun_base_url: str

    log_level: str
    log_rotation: str
    log_max_bytes: int
    log_backup_count: int
    log_query_token: str

    request_timeout: int
    retry_count: int


def _env(name: str, default: str = "") -> str:
    return os.getenv(name, default).strip()


@lru_cache(maxsize=1)
def get_settings() -> Settings:
    load_dotenv()
    return Settings(
        feishu_app_id=_env("FEISHU_APP_ID"),
        feishu_app_secret=_env("FEISHU_APP_SECRET"),
        feishu_verify_token=_env("FEISHU_VERIFY_TOKEN"),
        feishu_encrypt_key=_env("FEISHU_ENCRYPT_KEY"),
        feishu_ws_url=_env("FEISHU_WS_URL"),
        huobanyun_app_id=_env("HUOBANYUN_APP_ID"),
        huobanyun_app_secret=_env("HUOBANYUN_APP_SECRET"),
        huobanyun_token=_env("HUOBANYUN_TOKEN"),
        huobanyun_api_key=_env("HUOBANYUN_API_KEY"),
        huobanyun_base_url=_env("HUOBANYUN_BASE_URL"),
        log_level=_env("LOG_LEVEL", "INFO"),
        log_rotation=_env("LOG_ROTATION", "size"),
        log_max_bytes=int(_env("LOG_MAX_BYTES", "10485760")),
        log_backup_count=int(_env("LOG_BACKUP_COUNT", "10")),
        log_query_token=_env("LOG_QUERY_TOKEN"),
        request_timeout=int(_env("REQUEST_TIMEOUT", "10")),
        retry_count=int(_env("RETRY_COUNT", "2")),
    )