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

const whiteList = ['/login'] // no redirect whitelist
let registerRouteFresh = false
router.beforeEach(async(to, from, next) => {
  // start progress bar
  NProgress.start()

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

  if (hasToken) {
    console.log(to.path)
    if (to.path === '/login') {
      // if is logged in, redirect to the home page
      next({ path: '/' })
    } else {
      // determine whether the user has obtained his permission roles through getInfo
      if (registerRouteFresh) {
        next()
      } else {
        try {
          // generate accessible routes map based on roles
          const accessRoutes = await store.dispatch('permission/generateRoutes', store.state.user.roles)
          // dynamically add accessible routes
          // console.log(router.options.routes)
          // router.options.routes.push(...accessRoutes)
          // console.log(router.options.routes)
          accessRoutes.forEach(item => {
            router.addRoute(item)
          })
          registerRouteFresh = true
          // hack method to ensure that addRoutes is complete
          // set the replace: true, so the navigation will not leave a history record
          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('/')
        }
      }
    }
  } else {
    /* has no token*/
    console.log(to.path)
    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')
    }
  }
})

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