express = require 'express'
request = require 'request'

path = require 'path'

exports.startServer = (config, callback) ->
  callback = callback || (->)
  port = process.env.PORT or config.server.port

  app = express()
  server = app.listen port, ->
    console.log "Express server listening on port %d in %s mode", server.address().port, app.settings.env

  app.set 'port', port

  forwardToWebpackServer = (req, res) ->
    url = "#{config.webpackServerAddress}#{req.url}"
    request(url).pipe(res)

  app.get '/*.js', forwardToWebpackServer

  app.get '/address-book*', (req, res) ->
    url = "#{config.webpackServerAddress}/address-book"
    request(url).pipe(res)

  config.modifyApp app if config.modifyApp?

  app.get '/', (req, res) ->
    res.sendFile path.join(__dirname, 'index.html')

  app.get '/style.css', (req, res) ->
    res.sendFile path.join(__dirname, 'style.css')

  app.get '*', forwardToWebpackServer

  callback(server, app)