text: import router from './routers'
  import store from '@/store'
  import Config from '@/settings'
  import NProgress from 'nprogress' // progress bar
  import 'nprogress/nprogress.css'// progress bar style
  import { getToken } from '@/utils/auth' // getToken from cookie
  import { buildMenus } from '@/api/system/menu'
  import { filterAsyncRouter } from '@/store/modules/permission'
  
  NProgress.configure({ showSpinner: false })// NProgress Configuration
  
  const whiteList = ['/login']// no redirect whitelist
  
  router.beforeEach((to, from, next) => {
    if (to.meta.title) {
      document.title = to.meta.title + ' - ' + Config.title
    }
    NProgress.start()
    if (getToken()) {
      // 已登录且要跳转的页面是登录页
      if (to.path === '/login') {
        next({ path: '/' })
        NProgress.done()
      } else {
        if (store.getters.roles.length === 0) { // 判断当前用户是否已拉取完user_info信息
          console.log(store.getters.roles)
          store.dispatch('GetInfo').then(() => { // 拉取user_info
            // 动态路由，拉取菜单
            loadMenus(next, to)
          }).catch(() => {
            store.dispatch('LogOut').then(() => {
              location.reload() // 为了重新实例化vue-router对象 避免bug
            })
          })
        // 登录时未拉取 菜单，在此处拉取
        } else if (store.getters.loadMenus) {
          // 修改成false，防止死循环
          store.dispatch('updateLoadMenus')
          loadMenus(next, to)
        } else {
          next()
        }
      }
    } 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?redirect=${to.fullPath}`) // 否则全部重定向到登录页
        NProgress.done()
      }
    }
  })
  
  export const loadMenus = (next, to) => {
    buildMenus().then(res => {
      const sdata = JSON.parse(JSON.stringify(res))
      const rdata = JSON.parse(JSON.stringify(res))
      const sidebarRoutes = filterAsyncRouter(sdata)
      const rewriteRoutes = filterAsyncRouter(rdata, true)
      rewriteRoutes.push({ path: '*', redirect: '/404', hidden: true })
  
      store.dispatch('GenerateRoutes', rewriteRoutes).then(() => { // 存储路由
        router.addRoutes(rewriteRoutes) // 动态添加可访问路由表
        next({ ...to, replace: true })
      })
      store.dispatch('SetSidebarRouters', sidebarRoutes)
    })
  }
  
  router.afterEach(() => {
    NProgress.done() // finish progress bar
  })
  