import axios from "axios";
import router from "@/router/routers";
import { Notification } from "element-ui";
import store from "../store";
import { getToken } from "@/utils/auth";
import Config from "@/settings";
import Cookies from "js-cookie";

// 重试次数
axios.defaults.retry = 1;
axios.defaults.retryDelay = 1000;
window.isWaitRequest = false;

let requests = [];

// 挂起的请求
const refreshSubscribers = [];

/* 将所有的请求都push到数组中,其实数组是[function(token){}, function(token){},...]*/
function subscribeTokenRefresh(cb) {
  refreshSubscribers.push(cb);
}

/* 数组中的请求得到新的token之后自执行，用新的token去请求数据*/
function onRefreshed(token) {
  refreshSubscribers.map(cb => cb(token));
}

// 创建axios实例
const service = axios.create({
  baseURL:
    process.env.NODE_ENV === "production" ? process.env.VUE_APP_BASE_API : "/", // api 的 base_url
  timeout: Config.timeout // 请求超时时间
});

// request拦截器
service.interceptors.request.use(
  config => {
    if (getToken()) {
      config.headers["Authorization"] = "bearer " + getToken(); // 让每个请求携带自定义token 请根据实际情况自行修改
    }
    if (config.url === "/auth/oauth/token") {
      config.headers["Authorization"] =
        "Basic eW91aWRhbi1zdG9jay13ZWI6c3RvY2tAMTIz";
      config.headers["Content-Type"] = "application/x-www-form-urlencoded";
    } else {
      config.headers["Content-Type"] = "application/json";
    }
    return config;
  },
  error => {
    Promise.reject(error);
  }
);

// accessToken失效 并重新请求失效接口
function refresh() {
  const ref = Cookies.get(Config.RefreshKey);
  return axios.get("/auth/oauth/token", {
    params: {
      grant_type: "refresh_token",
      client_id: "youlai-admin",
      client_secret: "123456",
      refresh_token: ref
    }
  });
}

// response 拦截器
service.interceptors.response.use(
  response => {
    // token 已过期 重新登录
    if (response.data.code === "A0231") {
      if (!window.isWaitRequest) {
        window.isWaitRequest = true;
        refresh().then(refreshResponse => {
          // 重新设置token
          setToken(
            refreshResponse.data.token.access_token,
            refreshResponse.data.token.refresh_token,
            true
          );
          // 重新请求接口 前过期的接口
          response.config.headers.Authorization =
            refreshResponse.data.token_type +
            " " +
            refreshResponse.data.access_token;
          response.config.headers.withCredentials = true;
          requests.length > 0 &&
            requests.map(cb => {
              cb();
            });
          requests = []; // 注意要清空
          window.isWaitRequest = false;
          return service(response.config);
        });
      } else {
        return new Promise(resolve => {
          requests.push(() => {
            response.config.headers.Authorization = "bearer " + getToken;
            response.config.headers.withCredentials = true;
            resolve(service(response.config));
          });
        });
      }
    }
    // 刷新token失效 跳转登录页
    if (response.data.code === "A0314") {
      this.$store.dispatch("LogOut").then(() => {
        location.reload();
      });
    }
    console.log(response.data);
    return response.data;
  },
  error => {
    // 兼容blob下载出错json提示
    if (
      error.response.data instanceof Blob &&
      error.response.data.type.toLowerCase().indexOf("json") !== -1
    ) {
      const reader = new FileReader();
      reader.readAsText(error.response.data, "utf-8");
      reader.onload = function(e) {
        const errorMsg = JSON.parse(reader.result).message;
        Notification.error({
          title: errorMsg,
          duration: 5000
        });
      };
    } else {
      let code = 0;
      try {
        code = error.response.data.status;
      } catch (e) {
        if (error.toString().indexOf("Error: timeout") !== -1) {
          Notification.error({
            title: "网络请求超时",
            duration: 5000
          });
          return Promise.reject(error);
        }
      }
      console.log(code);
      if (code) {
        if (code === 401) {
          store.dispatch("LogOut").then(() => {
            // 用户登录界面提示
            Cookies.set("point", 401);
            location.reload();
          });
        } else if (code === 403) {
          router.push({ path: "/401" });
        } else {
          const errorMsg = error.response.data.message;
          if (errorMsg !== undefined) {
            Notification.error({
              title: errorMsg,
              duration: 5000
            });
          }
        }
      } else {
        Notification.error({
          title: "接口请求失败",
          duration: 5000
        });
      }
    }
    return Promise.reject(error);
  }
);
export default service;

export const service2 = axios.create({
  baseURL: "http://192.168.1.113:9000",
  timeout: Config.timeout // 请求超时时间
});