server.js

// primary author: Olga
var express = require('express');
var path = require('path');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var session = require('express-session');
var mongoose = require('mongoose');

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

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

// set up routes
require('./routes/routes')(app);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
    var err = new Error('Not Found');
    err.status = 404;
    next(err);
});

// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
    app.use(function(err, req, res, next) {
        res.status(err.status || 500);
        res.render('error', {
            message: err.message,
            error: err
        });
    });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
        message: err.message,
        error: {}
    });
});

//  find db string
var connection_string = 'mongodb://localhost/amazejobs';

if (process.env.OPENSHIFT_MONGODB_DB_PASSWORD) {
    connection_string = process.env.OPENSHIFT_MONGODB_DB_USERNAME + ":" +
    process.env.OPENSHIFT_MONGODB_DB_PASSWORD + "@" +
    process.env.OPENSHIFT_MONGODB_DB_HOST + ':' +
    process.env.OPENSHIFT_MONGODB_DB_PORT + '/' +
    process.env.OPENSHIFT_APP_NAME;
}

var port = process.env.OPENSHIFT_NODEJS_PORT;
var ip = process.env.OPENSHIFT_NODEJS_IP;

// connect mongo and go!
mongoose.connect(connection_string);
var db = mongoose.connection;
db.on('error', console.error.bind(console, 'connection error:'));
db.on('open', function () {
    app.listen(port || 8080, ip);
});

module.exports = app;