require('./check-versions')()

var config = require('../config')

if (!process.env.NODE_ENV) process.env.NODE_ENV = JSON.parse(config.dev.env.NODE_ENV)

var path = require('path')

var express = require('express')

var webpack = require('webpack')

var opn = require('opn')

var proxyMiddleware = require('http-proxy-middleware')

var webpackConfig = require('./webpack.dev.conf')

// default port where dev server listens for incoming traffic

var port = process.env.PORT || config.dev.port

// Define HTTP proxies to your custom API backend

// https://github.com/chimurai/http-proxy-middleware

var proxyTable = config.dev.proxyTable

var app = express()

//router Start

var appData = require('../data.json');//获取data数据

var seller = appData.seller;　//获取详细数据

var goods = appData.goods;  //获取详细数据

var ratings = appData.ratings;  //获取详细数据

var apiRouter = express.Router();  //定义一个路由

apiRouter.get('/seller',function(req,res){//.get方法第一个参数 地址，第二个是个函数，传入requrice responce，responce返回json对象

  res.json({

    errno: 0,    //错误代码

    data: seller //数据

  });

});

apiRouter.get('/goods',function(req,res){

  res.json({

    errno: 0,

    data: goods

  });

});

apiRouter.get('/ratings',function(req,res){

  res.json({

    errno: 0,

    data: ratings

  });

});

app.use('/api',apiRouter);//加载路由  访问路径：根目录/api/seller  根目录/api/goods  根目录/api/ratings
//router End

var compiler = webpack(webpackConfig)

var devMiddleware = require('webpack-dev-middleware')(compiler, {

  publicPath: webpackConfig.output.publicPath,

  stats: {

    colors: true,

    chunks: false

  }

})

var hotMiddleware = require('webpack-hot-middleware')(compiler)

// force page reload when html-webpack-plugin template changes

compiler.plugin('compilation', function (compilation) {

  compilation.plugin('html-webpack-plugin-after-emit', function (data, cb) {

    hotMiddleware.publish({ action: 'reload' })

    cb()

  })

})

// proxy api requests

Object.keys(proxyTable).forEach(function (context) {

  var options = proxyTable[context]

  if (typeof options === 'string') {

    options = { target: options }

  }

  app.use(proxyMiddleware(context, options))

})

// handle fallback for HTML5 history API

app.use(require('connect-history-api-fallback')())

// serve webpack bundle output

app.use(devMiddleware)

// enable hot-reload and state-preserving

// compilation error display

app.use(hotMiddleware)

// serve pure static assets

var staticPath = path.posix.join(config.dev.assetsPublicPath, config.dev.assetsSubDirectory)

app.use(staticPath, express.static('./static'))

module.exports = app.listen(port, function (err) {

  if (err) {

    console.log(err)

    return

  }

  var uri = 'http://localhost:' + port

  console.log('Listening at ' + uri + '\n')

  // when env is testing, don't need open it

  if (process.env.NODE_ENV !== 'testing') {

    opn(uri)

  }

})