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 '@/utils/auth' // get token from cookie
import getPageTitle from '@/utils/get-page-title'

NProgress.configure({ showSpinner: false }) // NProgress Configuration

const whiteList = ['/login', '/auth-redirect'] // no redirect whitelist

router.beforeEach(async(to, from, next) => {
 // start progress bar
 NProgress.start()

 // set page title
 document.title = getPageTitle(to.meta.title)

 // determine whether the user has logged in
 const hasToken = getToken()

 if (hasToken) {
 if (to.path === '/login') {
 // if is logged in, redirect to the home page
 next({ path: '/' })
 NProgress.done()
 } else {
 const hasRoles = store.getters.roles && store.getters.roles.length > 0
 if (hasRoles) {
 next()
 } else {
 try {
 const roles = await store.dispatch('user/getInfo')
 const accessRoutes = await store.dispatch('permission/generateRoutes', roles)
 router.addRoutes(accessRoutes)
 next({ ...to, replace: true })
 } catch (error) {
 // remove token and go to login page to re-login
 await store.dispatch('user/resetToken')
 Message.error(error || 'Has Error')
 next(`/login?redirect=${to.path}`)
 NProgress.done()
 }
 }
 }
 } else {
 /* has no token*/
 if (whiteList.indexOf(to.path) !== -1) {
 // in the free login whitelist, go directly
 next()
 } else {
 // other pages that do not have permission to access are redirected to the login page.
 next(`/login?redirect=${to.path}`)
 NProgress.done()
 }
 }
})

router.afterEach(() => {
 // finish progress bar
 NProgress.done()
})