import axios from 'axios';

const api = axios.create({
  baseURL: '/api',
  timeout: 30000,
  withCredentials: true, // 携带 httpOnly cookie
});

// 响应拦截：统一错误处理
api.interceptors.response.use(
  (response) => response.data,
  (error) => {
    // 仅在“已登录后 token 失效”时清除登录态并跳转登录页。
    // 登录接口本身返回 401（用户名/密码错误）时不应跳转，否则会吞掉错误提示。
    if (error.response?.status === 401 && error.config?.url !== '/auth/login') {
      localStorage.removeItem('user');
      window.location.href = '/login';
    }
    const detail = error.response?.data?.detail;
    let msg = error.message || '请求失败';
    if (typeof detail === 'string') {
      msg = detail;
    } else if (Array.isArray(detail) && detail.length > 0) {
      msg = detail.map((d: any) => d?.msg || (typeof d === 'string' ? d : JSON.stringify(d))).join('; ');
    } else if (detail && typeof detail === 'object') {
      msg = JSON.stringify(detail);
    }
    return Promise.reject(new Error(msg));
  }
);

export default api;