import Vue from 'vue'
import Router from 'vue-router'
import routes from './routers'
import store from '@/store'
import iView from 'iview'
import { setToken, getToken, canTurnTo, setTitle } from '@/libs/util'
import config from '@/config'

const { homeName } = config

Vue.use(Router)
const router = new Router({
  routes,
  mode: 'hash'
})
const LOGIN_PAGE_NAME = 'login'
const WECHAT_LOGIN = 'wechatLogin'
const WECHAT_LOGIN_CONFIRM = 'wechatLogin_confirm'
const turnTo = (to, access, next) => {
  if (canTurnTo(to.name, access, routes)) next() // 有权限，可访问
  else next({ replace: true, name: 'error_401' }) // 无权限，重定向到401页面
}

router.beforeEach((to, from, next) => {
  console.log(to, from, '路由守卫')
  // ------- 无用代码
  if (to.query.username) {
    setToken('')
  }
  // ------------
  iView.LoadingBar.start()
  const token = getToken()
  if (to.name !== 'yiQingStatisticsMobile') {
    if ((!token && to.name !== LOGIN_PAGE_NAME) && (!token && to.name !== WECHAT_LOGIN) && (!token && to.name !== WECHAT_LOGIN_CONFIRM)) {
      // 未登录且要跳转的页面不是登录页
      next({
        name: LOGIN_PAGE_NAME // 跳转到登录页
      })
    } else if (!token && to.name === LOGIN_PAGE_NAME) {
      // 未登陆且要跳转的页面是登录页
      next() // 跳转
    } else if (!token && to.name === WECHAT_LOGIN) {
      // 未登陆且要跳转的页面是登录页
      next() // 跳转
    } else if (!token && to.name === WECHAT_LOGIN_CONFIRM) {
      // 未登陆且要跳转的页面是登录页
      next() // 跳转
    } else if (token && to.name === LOGIN_PAGE_NAME) {
      // 已登录且要跳转的页面是登录页
      next({
        name: homeName // 跳转到homeName页
      })
    } else {
      if (store.state.user.hasGetInfo) {
        turnTo(to, store.state.user.access, next)
      } else {
        store.dispatch('getUserInfo').then(user => {
          // 拉取用户信息，通过用户权限和跳转的页面的name来判断是否有权限访问;access必须是一个数组，如：['super_admin'] ['super_admin', 'admin']
          turnTo(to, user.access, next)
        }).catch(() => {
          setToken('')
          next({
            name: 'login'
          })
        })
      }
    }
  } else {
    next()
  }
})

router.afterEach(to => {
  setTitle(to, router.app)
  iView.LoadingBar.finish()
  window.scrollTo(0, 0)
})
const originalPush = Router.prototype.push
Router.prototype.push = function push (location) {
  return originalPush.call(this, location).catch(err => err)
}

export default router
