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,removeToken } from '@/utils/auth' // get token from cookie
import getPageTitle from '@/utils/get-page-title'
import Layout from '@/layout'
import InnerLink from '@/layout/components/InnerLink'
const _import = require('./router/_import_' + process.env.NODE_ENV)

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

const whiteList = ['/login'] // 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
      removeToken()
      next()
      NProgress.done()
    } else {
      const hasGetUserInfo = store.getters.name
      if (hasGetUserInfo) {
        next()
      } else {
        try {
          // get user info
          await store.dispatch('user/getInfo')
          await store.dispatch('user/getMenu')
          if (store.getters.menuAuthority < 1) {
            global.antRouter = []
            next()
          }
        
          const menus = filterAsyncRouter(store.getters.menuAuthority);
          // const menus = filterAsyncRouter(obj);
          router.addRoutes(menus)
          global.antRouter = menus
          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()
    }
  }
})

/**
 * 递归加载路由组件
 * @param asyncRouterMap 可获取的路由列表
 * @returns {*}
 */

function filterAsyncRouter(asyncRouterMap) {
  const accessedRouters = asyncRouterMap.filter(route => {
    if (route.component) {
      if (route.component === 'Layout') {        
        route.component = Layout
      } else if (route.component === 'InnerLink') {        
        route.component = InnerLink
      } else {
        try {
          route.component = _import(route.component)// 导入组件        
        } catch (error) {
          //debugger
          console.log(error)
          route.component = _import('dashboard/index')// 导入组件
        }
      }
    }
    if (route.children && route.children.length > 0) {
      route.children = filterAsyncRouter(route.children)
    } else {
      delete route.children
    }
    return true
  })
  return accessedRouters
}

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