<template>
 <transition :name="transitionName">
  <router-view></router-view>
 </transition>
</template>

<script>
export default {
 name: 'app',
 data () {
  return {
   transitionName: 'fade'
  }
 },
 watch: {
  '$route' (to, from) {
   let toDepth = to.meta
   let fromDepth = from.meta
   if (fromDepth > toDepth) {
    this.transitionName = 'fade-left'
   } else if (fromDepth < toDepth) {
    this.transitionName = 'fade-right'
   } else {
    this.transitionName = 'fade'
   }
  }
 }
}
</script>

<style>
</style>

<template>
 <div class="content">
  <!--<transition name="fade" mode="out-in">-->
   <router-view></router-view>
  <!--</transition>-->
  <Tabbar 
   :routers="[
    {path: '/index/home', icon: 'icon-home', name: '首页'},
    {path: '/index/loading', icon: 'icon-course', name: '加载'},
    {path: '/index/message', icon: 'icon-info', name: '信息'}
   ]"
  >
  </Tabbar>
 </div>
</template>

<script>
export default {
 name: 'Index',
 components: {Tabbar: require('components/Tabbar')},
 data () {
  return {

  }
 }
}
</script>

<style lang="scss" scoped> 
.content{
 background-color: #eee;
}
</style>

import fetch from 'isomorphic-fetch'
import store from 'store'
import router from './router'
var env = process.env.NODE_ENV
var rootUrl
if (env === 'development') {
 rootUrl = ''
}
if (env === 'production') {
 rootUrl = ''
}
const post = function (url, params = {}) {
 return fetch(rootUrl + url, {
  method: 'post',
  headers: {
   'Content-type': 'application/json; charset=utf-8',
   'Authorization': store.get('token')
  },
  body: JSON.stringify(params)
 }).then(function (res) {
  if (res.status === 401) {
   // 没有权限
   api.logout()
  } else {
   return res.json()
  }
 })
}

const urls = [
 'classAtCurDate' // 普通接口列表
]

var api = {}

for (var url of urls) {
 (function (url) {
  api[url] = (params) => {
   console.log(url)
   return post('course/' + url, params)
  }
 })(url)
}
// 需要特殊处理的接口
api.logout = () => {
 store.clearAll()
 router.push('login')
}

api.login = (params) => {
 store.set('id', 1)
 store.set('token', 2)
 return Promise.resolve({params})
}
export default api

// 在main.js中导入api接口
import api from '../src/api'
Vue.$api = Vue.prototype.$api = api

router.beforeEach((to, from, next) => {
 if (cache.get('id') && to.path === '/login') {
  next('/index')
 } else if (!cache.get('id') && to.path !== '/login') {
  next('/login')
 } else {
  next()
 }
})