server.js

var express          = require('express');
var nodemailer       = require('nodemailer');
var app              = express();
var port             = process.env.PORT || 3000;

//initialize required modules for the app
var passport         = require('passport');
var session          = require('express-session');
var bodyparser       = require('body-parser');
var morgan           = require('morgan');
var path             = require('path');
var mongoose         = require('mongoose');
var ejs              = require('ejs');
var engine           = require('ejs-mate');
var mongodb          = require('mongodb');
var exphbs           = require('express-handlebars');
var expressvalidator = require('express-validator');
var morgan           = require('morgan');
var cookieParser     = require('cookie-parser');
var bodyParser       = require('body-parser');
var session          = require('express-session');
var methodOverride   = require('method-override');
var flash            = require('connect-flash');
var cors             = require('cors');
var mongostore       = require('connect-mongo')(session);
var rsvp             = require('./app/models/rsvp');

//connect to mongo database
var configDB         = require('./config/database.js');
mongoose.connect(configDB.url);
//require passport for authentication
require('./config/passport.js')(passport);

//use required modules
app.use(morgan('dev'));
app.use(methodOverride());
/* app.use(express.static(path.join(__dirname, 'views'))); */
app.use(express.static(__dirname + '/public'));
app.use('/bower_components',  express.static(__dirname + '/bower_components'));
app.use(bodyParser.urlencoded({extended: false}));
app.use(cookieParser());
app.use(session({secret:'anystringoftext',
      saveUninitialized:true,
      resave:false
}));
/* 
   this middleware is used to make the user object accessible
   throughout all our routes 
*/
app.use(function(req, res, next){
  res.locals.user = req.user;
  next();
});

app.use(cors());

app.use(function(req, res, next) {
  res.header("Access-Control-Allow-Origin", "*");
  res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
  next();
});

require('./config/passport')(passport);

app.set('view engine', 'html'); 
app.engine('ejs', engine);
app.set('view engine', 'ejs');

app.use(passport.initialize());
app.use(passport.initialize());

app.use(passport.session());
app.use(flash());

require('./config/routes/rsvp')(app, passport);
require('./config/routes/user')(app, passport);
require('./config/routes/events')(app, passport);
require('./config/routes/main')(app, passport);

app.listen(port);
console.log('Server running on localhost: port ' + port);