wolk/_assets/src/router/index.js

import Vue from 'vue'
import Router from 'vue-router'
import Login from '@/components/Login'
import Files from '@/components/Files'
import Main from '@/components/Main'
import auth from '@/utils/auth.js'

Vue.use(Router)

const router = new Router({
  base: document.querySelector('meta[name="base"]').getAttribute('content'),
  mode: 'history',
  routes: [
    {
      path: '/login',
      name: 'Login',
      component: Login,
      beforeEnter: function (to, from, next) {
        auth.loggedIn()
        .then(() => {
          next({ path: '/files' })
        })
        .catch(() => {
          document.title = 'Login'
          next()
        })
      }
    },
    {
      path: '/*',
      component: Main,
      meta: {
        requiresAuth: true
      },
      children: [
        {
          path: '/files*',
          name: 'Files',
          component: Files
        },
        {
          path: '/*',
          redirect: {
            name: 'Files'
          }
        }
      ]
    }
  ]
})

router.beforeEach((to, from, next) => {
  if (to.matched.some(record => record.meta.requiresAuth)) {
    // this route requires auth, check if logged in
    // if not, redirect to login page.
    auth.loggedIn()
      .then(() => {
        next()
      })
      .catch(e => {
        next({
          path: '/login',
          query: { redirect: to.fullPath }
        })
      })

    return
  }

  next()
})

export default router