server.js

// modules =================================================
var express        = require('express.io');
var app            = express();
var mongoose       = require('mongoose');
var bodyParser     = require('body-parser');
var methodOverride = require('method-override');
var backend        = require('./app/backend.js');

//var socket         = require('./app/io.js');


var port = process.env.PORT || 8080; // set our port
// mongoose.connect(db.url); // connect to our mongoDB database (commented out after you enter in your own credentials)

// get all data/stuff of the body (POST) parameters
app.use(bodyParser.json()); // parse application/json 
app.use(bodyParser.json({ type: 'application/vnd.api+json' })); // parse application/vnd.api+json as json
app.use(bodyParser.urlencoded({ extended: true })); // parse application/x-www-form-urlencoded

app.use(methodOverride('X-HTTP-Method-Override')); // override with the X-HTTP-Method-Override header in the request. simulate DELETE/PUT
app.use(express.static(__dirname + '/public')); // set the static files location /public/img will be /img for users

var Student=require('./config/dbMode.js').Student;
var Class=require('./config/dbMode.js').Class;
var Teacher=require('./config/dbMode.js').Teacher;

app.http().io();
// sockets
app.io.route('new word', function (req) {
		console.log("saveword");
  	backend.saveWord(req.data);
});
app.io.route('get top', function (req) {
		console.log("gettop");
  	var trendingWords = backend.getTrendingWords(req);
});

// start app ===============================================
app.listen(port);
exports = module.exports = app; 						// expose app