server.js

var express = require('express');
var path = require('path');
var logger = require('morgan');
var bodyParser = require('body-parser');
var mongoose = require('mongoose');
// Babel ES6/JSX Compiler
require('babel-register');

var swig  = require('swig');
var React = require('react');
var ReactDOM = require('react-dom/server');
var Router = require('react-router');
var routes = require('./app/routes');
var config = require('./configs/database');
var Bot = require('./models/bots');


var app = express();

mongoose.connect(config.database,{useMongoClient: true});
mongoose.connection.on('connected', function() {
  console.info('Connected to the database');
});

const api = {
  upload: require('./api/upload')
}
app.set('port', process.env.PORT || 3000);
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(express.static(path.join(__dirname, 'public')));
app.use('/api/v1/upload', api.upload);
//react middleware
app.use(function(req, res) {
    Router.match({ routes: routes.default, location: req.url }, function(err, redirectLocation, renderProps) {
      if (err) {
        res.status(500).send(err.message)
      } else if (redirectLocation) {
        res.status(302).redirect(redirectLocation.pathname + redirectLocation.search)
      } else if (renderProps) {
        var html = ReactDOM.renderToString(React.createElement(Router.RoutingContext, renderProps));
        var page = swig.renderFile('views/index.html', { html: html });
        res.status(200).send(page);
      } else {
        res.status(404).send('Page Not Found')
      }
    });
  });

/**
 * Socket.io stuff.
 */
var server = require('http').createServer(app);
var io = require('socket.io')(server);
var onlineUsers = 0;

io.sockets.on('connection', function(socket) {
  onlineUsers++;

  io.sockets.emit('onlineUsers', { onlineUsers: onlineUsers });

  socket.on('disconnect', function() {
    onlineUsers--;
    io.sockets.emit('onlineUsers', { onlineUsers: onlineUsers });
  });
});

server.listen(app.get('port'), function() {
  console.log('Express server listening on port ' + app.get('port'));
});