keanu-weblite/src/router/index.js

import Vue from 'vue'
import VueRouter from 'vue-router'
import Chat from '../components/Chat.vue'
import Login from '../components/Login.vue'

Vue.use(VueRouter)

const routes = [
  {
    path: '/',
    name: 'Chat',
    component: Chat
  },
  {
    path: '/login',
    component: Login
  },
  {
    path: '/join/:room?',
    redirect: from => {
      const room = from.hash;
      if (room) {
        return { name: 'Chat', params: { joinRoom: room }};
      }
      return '/';
    }
  },
]

const router = new VueRouter({
  routes
})

router.beforeEach((to, from, next) => {
  const publicPages = ['/login'];
  const authRequired = !publicPages.includes(to.path);
  const loggedIn = localStorage.getItem('user');

  // trying to access a restricted page + not logged in
  // redirect to login page
  if (authRequired && !loggedIn) {
    next('/login');
  } else {
    next();
  }
});

export default router