import router from './router'
import store from './store'
import { Message } from 'element-ui'
import NProgress from 'nprogress'
import 'nprogress/nprogress.css'
import { isPathMatch } from '@/utils/validate'
import { isRelogin } from '@/utils/request'

NProgress.configure({ showSpinner: false })

const whiteList = ['/login', '/register']

const isWhiteList = (path) => {
  return whiteList.some(pattern => isPathMatch(pattern, path))
}

router.beforeEach((to, from, next) => {
  NProgress.start()
  // 基于 Session 认证：通过是否有角色信息来判断登录状态
  const hasRoles = store.getters.roles && store.getters.roles.length > 0

  to.meta.title && store.dispatch('settings/setTitle', to.meta.title)

  if (isWhiteList(to.path)) {
    // 在免登录白名单，直接进入
    next()
    NProgress.done()
  } else {
    if (hasRoles) {
      // 已有用户信息，放行
      next()
    } else {
      // 没有用户信息，尝试获取
      isRelogin.show = true
      store.dispatch('GetInfo').then(() => {
        isRelogin.show = false
        store.dispatch('GenerateRoutes').then(accessRoutes => {
          // 根据roles权限生成可访问的路由表
          router.addRoutes(accessRoutes) // 动态添加可访问路由表
          next({ ...to, replace: true }) // hack方法 确保addRoutes已完成
        })
      }).catch(err => {
        // 获取用户信息失败，说明未登录或 Session 已过期
        store.dispatch('FedLogOut').then(() => {
          Message.error(err || '未登录或登录超时，请重新登录')
          next(`/login?redirect=${encodeURIComponent(to.fullPath)}`)
          NProgress.done()
        })
      })
    }
  }
})

router.afterEach(() => {
  NProgress.done()
})