import { router, addDynamicRoutes } from './router'
import store from './stores'
import { ElMessage } from 'element-plus'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import { getToken,getRefreshToken } from '@/utils/auth' // get token from cookie
import getPageTitle from '@/utils/get-page-title'

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

const whiteList = ['/login'] // no redirect whitelist

const getUserStore = () => store.userStore()
const getPermissionStore = () => store.permissionStore()

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 if(to.name==='500'){
      next()
      NProgress.done()
    } 
    else {
      const userStore = getUserStore()
      const hasGetUserInfo = userStore.state.userName && userStore.state.id && userStore.state.userName != '' && userStore.state.id != ''
      if (hasGetUserInfo) {
        next()
      } else {
        try {
          //获取用户菜单
          let accessRoutes = await userStore.getMenu()
          //获取用户信息
          await userStore.getInfo()

          //初始化用户菜单
          let menus= accessRoutes.filter(it=>it.menuType!=3)
          // dynamically add accessible routes
          addDynamicRoutes(menus)
     
          //按钮权限
          let btns= accessRoutes.filter(it=>it.menuType==3).map(it=>it.permission)
          //设置权限 
          getPermissionStore().setPermission(btns)

          if (accessRoutes.length < 1) {
            //用户没有动态菜单直接到首页
            next('/')
          } else if (to.name == 'allto404') {
            //如果导航之前没有获取到动态菜单，则会被allto404捕获 则需要在获取动态菜单后重新定向到正确路径
            next(to.path)
          } else {
            //正确导航
            next({ ...to, replace: true })
          }
        } catch (error) {
          ElMessage.error('Has Error')
          NProgress.done()
          // remove token and go to login page to re-login
          //await userStore.resetAllToken()
          // other pages that do not have permission to access are redirected to the login page.
          window.location.href="/500"
        }
      }
    }
  } else {
    /* has no token*/
    const refresToken=getRefreshToken()
    if(refresToken){
      //重新用刷新token登录
      let uStore = getUserStore()
      await uStore.reLogin()
      .catch(async ()=>{
        //刷新失败
        await uStore.resetAllToken()
        // other pages that do not have permission to access are redirected to the login page.
        window.location.href="/login?redirect="+to.path
        NProgress.done()
        return
      })
      //刷新成功
      next()
    }
    else 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()
      //store.userStore().resetAllToken()
      window.location.href="/login?redirect="+to.path
    }
  }
})

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