from __future__ import annotations

import os
from typing import List

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
    feishu_approval_code: str
    feishu_approval_codes: List[str]
    feishu_approval_code_public: List[str]
    feishu_approval_code_private: List[str]
    feishu_approval_event_key: str
    feishu_project_no_field_code: str

    huobanyun_app_id: str
    huobanyun_app_secret: str
    huobanyun_token: str
    huobanyun_api_key: str
    huobanyun_base_url: str
    huobanyun_order_status_done_id: str
    huobanyun_order_status_done_name: 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()


def _env_list(name: str) -> List[str]:
    raw = os.getenv(name, "")
    return [item.strip() for item in raw.split(",") if item.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"),
        feishu_approval_code=_env("FEISHU_APPROVAL_CODE"),
        feishu_approval_codes=_env_list("FEISHU_APPROVAL_CODES"),
        feishu_approval_code_public=_env_list("FEISHU_APPROVAL_CODE_PUBLIC"),
        feishu_approval_code_private=_env_list("FEISHU_APPROVAL_CODE_PRIVATE"),
        feishu_approval_event_key=_env("FEISHU_APPROVAL_EVENT_KEY"),
        feishu_project_no_field_code=_env("FEISHU_PROJECT_NO_FIELD_CODE"),
        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"),
        huobanyun_order_status_done_id=_env("HUOBANYUN_ORDER_STATUS_DONE_ID"),
        huobanyun_order_status_done_name=_env("HUOBANYUN_ORDER_STATUS_DONE_NAME", "已完成"),
        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")),
    )