/** 平台总后台的共享 HTTP 客户端，统一处理响应体和 JWT 请求头。 */
const apiBaseURL = import.meta.env.VITE_API_BASE_URL || 'http://localhost:12426/heqi/platform/v1';

export const tokenStorageKey = 'token';

export type PageResult<T> = { total: number; list: T[] };

// 将后端 SDK 的通用英文错误转换为面向用户的中文提示。
const API_ERROR_MESSAGES: Record<string, string> = {
  'Invalid Argument': '请求参数不正确，请检查填写内容',
};

// 优先保留后端提供的具体中文信息，仅翻译已知的通用英文错误。
function localizeApiErrorMessage(message?: string) {
  if (!message) return '请求失败';
  return API_ERROR_MESSAGES[message.trim()] ?? message;
}

export async function request<T>(path: string, init?: RequestInit): Promise<T> {
  const token = localStorage.getItem(tokenStorageKey);
  let response: Response;
  try {
    response = await fetch(`${apiBaseURL}${path}`, {
      ...init,
      headers: {
        'Content-Type': 'application/json',
        ...(token ? { Authorization: token } : {}),
        ...(init?.headers ?? {}),
      },
    });
  } catch {
    throw new Error('无法连接服务器，请确认服务已启动');
  }
  const payload = (await response.json()) as { code?: number; message?: string; details?: T };
  if (!response.ok || payload.code !== 0) {
    throw new Error(localizeApiErrorMessage(payload.message));
  }
  return payload.details as T;
}