import axios from "axios";

const http = axios.create({
  baseURL: "",
  timeout: 15000
});

http.interceptors.request.use((config) => {
  const token = localStorage.getItem("accessToken");
  if (token) {
    config.headers = config.headers || {};
    config.headers.Authorization = `Bearer ${token}`;
  }
  return config;
});

http.interceptors.response.use(
  (resp) => {
    const body = resp.data;
    if (body && body.code !== "0") {
      const err = new Error(body.msg || "请求失败");
      (err as any).code = body.code;
      (err as any).msg = body.msg;
      return Promise.reject(err);
    }
    return resp;
  },
  (error) => {
    if (error.response && (error.response.status === 401 || error.response.status === 403)) {
      // Clear session/local storage
      localStorage.removeItem("accessToken");
      localStorage.removeItem("refreshToken");
      sessionStorage.removeItem("userProfile");
      // Force redirect to login with timeout flag
      window.location.href = "/login?timeout=1";
    }
    
    // Process backend error message if available in response body even for non-200 status
    const body = error.response?.data;
    if (body && body.msg) {
        const err = new Error(body.msg);
        (err as any).code = body.code;
        (err as any).msg = body.msg;
        return Promise.reject(err);
    }

    return Promise.reject(error);
  }
);

export default http;