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()

// 数据mock
var appData = require('../static/data.json')
var seller = appData.seller
var goods = appData.goods
var ratings = appData.ratings

var apiRoutes = express.Router()

apiRoutes.get('/seller', function(req, res) {
  res.json({
    errno: 0,
    data: seller
  })
})

apiRoutes.get('/goods', function(req, res) {
  res.json({
    errno: 0,
    data: goods
  })
})

apiRoutes.get('/ratings', function(req, res) {
  res.json({
    errno: 0,
    data: ratings
  })
})

app.use('/api', apiRoutes)

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)
  }
})