// 对齐 web.archived dataProvider 的请求语义（fetch → Basic Auth → 401 全局登出）。
export const AUTH_STORAGE_KEY = 'creatorhub.auth';

export class RequestError extends Error {
  status: number;
  body?: unknown;
  constructor(message: string, status: number, body?: unknown) {
    super(message);
    this.status = status;
    this.body = body;
  }
}

export function unauthorized(): never {
  localStorage.removeItem(AUTH_STORAGE_KEY);
  if (window.location.pathname !== '/login') {
    window.history.replaceState({}, '', '/login');
    window.dispatchEvent(new PopStateEvent('popstate'));
  }
  throw new RequestError('认证已过期，请重新登录', 401);
}

export async function request(path: string, options: RequestInit = {}): Promise<any> {
  const auth = localStorage.getItem(AUTH_STORAGE_KEY);
  const headers: Record<string, string> = { ...(options.headers as Record<string, string>) };
  if (auth) headers.Authorization = `Basic ${btoa(auth)}`;
  let response: Response;
  try {
    response = await fetch(`/api${path}`, { ...options, headers });
  } catch (networkError: any) {
    throw new RequestError(`网络请求失败：${networkError?.message ?? networkError}`, 0);
  }
  if (response.status === 401) unauthorized();
  if (!response.ok) {
    const body = await response.json().catch(() => ({}));
    throw new RequestError(body.error || `请求失败 (${response.status})`, response.status, body);
  }
  if (response.status === 204) return null;
  const contentType = response.headers?.get?.('content-type') || '';
  if (contentType.toLowerCase().includes('text/html')) {
    throw new RequestError('API 返回了非 JSON 响应，请检查控制面路由', response.status);
  }
  return response.json();
}

export function jsonOptions(method: string, data: unknown): RequestInit {
  return {
    method,
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(data),
  };
}