text: import router from './router';
  import store from './store';
  import { Message } from 'element-ui';
  import NProgress from 'nprogress'; // progress bar
  import 'nprogress/nprogress.css';// progress bar style
  import { getToken } from '@/libs/utils/auth'; // getToken from cookie
  
  NProgress.configure({ showSpinner: false });// NProgress Configuration
  
  // permission judge function
  function hasPermission(roles, permissionRoles) {
    if (roles.indexOf('admin') >= 0) return true; // admin permission passed directly
    if (!permissionRoles) return true;
    return roles.some(role => permissionRoles.indexOf(role) >= 0);
  }
  
  const whiteList = ['/login'];// no redirect whitelist
  
  router.beforeEach((to, from, next) => {
    NProgress.start(); // start progress bar
    if (getToken()) { // determine if there has token
      /* has token*/
      if (to.path === '/login') {
        next({ path: '/' });
        NProgress.done(); // if current page is dashboard will not trigger	afterEach hook, so manually handle it
      } else {
        if (store.getters.roles.length === 0) { // 判断当前用户是否已拉取完user_info信息
          store.dispatch('GetUserInfo').then(res => { // 拉取user_info
            const roles = res.data.roles; // note: roles must be a array! such as: ['editor','develop']
            store.dispatch('GenerateRoutes', { roles }).then(() => { // 根据roles权限生成可访问的路由表
              router.addRoutes(store.getters.addRouters); // 动态添加可访问路由表
              next({ ...to, replace: true }); // hack方法 确保addRoutes已完成 ,set the replace: true so the navigation will not leave a history record
            });
          }).catch((err) => {
            store.dispatch('FedLogOut').then(() => {
              Message.error(err || 'Verification failed, please login again');
              next({ path: '/' });
            });
          });
        } else {
          // 加载按钮权限
          store.dispatch('ChangeBtnRoles', to.meta.btnRoles);
          // 没有动态改变权限的需求可直接next() 删除下方权限判断 ↓
          if (hasPermission(store.getters.roles, to.meta.roles)) {
            next();//
          } else {
            next({ path: '/401', replace: true, query: { noGoBack: true }});
          }
          // 可删 ↑
        }
      }
    } else {
      /* has no token*/
      if (whiteList.indexOf(to.path) !== -1) { // 在免登录白名单，直接进入
        next();
      } else {
        next('/login'); // 否则全部重定向到登录页
        NProgress.done(); // if current page is login will not trigger afterEach hook, so manually handle it
      }
    }
  });
  
  router.afterEach(() => {
    NProgress.done(); // finish progress bar
  });
  