app.js

/**
 * Module dependencies.
 */

var express = require('express');
var cors = require('cors');
var routes = require('./routes');
var http = require('http');
var path = require('path');
const expressGa = require('express-ga-middleware');


var app = express();

// Set environment.
if(process.env.DOKKU_APP_NAME) app.set('env', 'production');

// Settings.
app.set('port', process.env.PORT || 5000);
app.set('ip', process.env.IP || '0.0.0.0');
app.set('views', __dirname + '/views');
app.set('view engine', 'jade');
app.disable('x-powered-by');

// Middleware.
app.use(function(req, res, next) {
  res.locals.timing = {};
  res.locals.timing.start = Date.now();
  next();
});

app.use(function(req, res, next) {
  res.locals.env = app.get('env');
  next();
});

app.use(express.compress());
app.use(express.favicon(path.join(__dirname, 'public/img/favicon.ico')));
app.use(express.logger('dev'));
app.use(express.bodyParser());
app.use(express.methodOverride());
app.use(app.router);
app.use(express.static(path.join(__dirname, 'public')));

// Development only.
if ('development' == app.get('env')) {
  app.use(express.errorHandler());
}
var gaMiddle = expressGa('UA-1913538-6');

// Routing.
app.get('/', routes.site.get);
app.post('/', routes.site.post);

const apiGetPath = '/api/v1/ua';
app.get(apiGetPath, cors(), gaMiddle.event({
  category: 'api',
  action: 'hit',
  label: 'GET ' + apiGetPath
}), routes.api.get);

// Server.
http.createServer(app).listen(app.get('port'), app.get('ip'), function(){
  console.log('Express server listening on ' + app.get('ip') + ":" + app.get('port'));
  console.log("env: " + app.get('env'));
});