import axios from "axios";
import { clearAdminSession, getAdminToken } from "../utils/auth";
import { resolveApiBaseUrl } from "../utils/env";
import { goToAdminLogin } from "../utils/navigation";

interface ApiPayload {
  code?: number;
  message?: string;
  data?: unknown;
}

function redirectToLoginOnUnauthorized() {
  clearAdminSession();
  goToAdminLogin();
}

const request = axios.create({
  baseURL: resolveApiBaseUrl(),
  timeout: 20000,
});

request.interceptors.request.use((config) => {
  const token = getAdminToken();
  if (token) {
    config.headers = config.headers || {};
    config.headers.Authorization = `Bearer ${token}`;
  }
  return config;
});

request.interceptors.response.use(
  (response) => {
    if (response.config.responseType === "blob" || response.config.responseType === "arraybuffer") {
      return response.data as any;
    }

    const payload = response.data as ApiPayload;
    if (payload?.code === 0) {
      return payload as any;
    }

    if (payload?.code === 401) {
      redirectToLoginOnUnauthorized();
    }

    const error = new Error(payload?.message || "请求失败") as Error & {
      payload?: ApiPayload;
      status?: number;
    };
    error.payload = payload;
    error.status = response.status;
    return Promise.reject(error);
  },
  (error) => {
    const status = error?.response?.status;
    if (status === 401) {
      redirectToLoginOnUnauthorized();
    }
    return Promise.reject(error);
  },
);

export default request;