app.js

var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var exphbs = require('express-handlebars');
var expressValidator = require('express-validator');
var flash = require('connect-flash');
var session = require('express-session');
var passport = require('passport');
var LocalStrategy = require('passport-local').Strategy;
var mongo = require('mongodb');
var mongoose = require('mongoose');
mongoose.Promise = require('bluebird');
var async = require('async');
//Mongoosedb
mongoose.connect("mongodb://localhost/loginapp",{
	useMongoClient: true,
});
var db = mongoose.connection;

var routes = require('./routes/index');
var users = require('./routes/users');

//Init App
var app = express();

//View Engine
app.set('views' , path.join(__dirname , 'views'));
app.engine('handlebars' , exphbs({defaultLayout:'layout'}));
app.set('view engine' , 'handlebars');

// BodyParser Middleware
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: false }));
app.use(cookieParser());

//Set Static Folder
app.use(express.static(path.join(__dirname , 'public')));

//Express Session

app.use(session({
	secret: 'secret',
	saveUninitialized: true,
	resave: true
}));

//Passport init
app.use(passport.initialize());
app.use(passport.session());

//Express Validator
app.use(expressValidator({
	errorFormatter: function(param, msg, value) {
		var namespace = param.split('.'),
	    root = namespace.shift(),
		formParam = root;

		while(namespace.length) {
			formParam += '['+ namespace.shift() + ']' ; 
		}
		return {
			param : formParam,
			msg	  : msg , 
			value : value
		};
	}
}));

//connect flash
app.use(flash());

// Global Vars
app.use(function(req, res, next) {
	res.locals.success_msg = req.flash('success_msg');
	res.locals.error_msg = req.flash('error_msg');
	res.locals.error = req.flash('error');
	res.locals.user = req.user || null;
	//console.log(res);
	next();
});

app.use('/' , routes);
app.use('/users',users);

//Set Port 
app.set('port'  ,(process.env.PORT || 3000));
app.listen(app.get('port') , function(){
	console.log('Server started on port '+app.get('port'));
});