app.js

var express = require('express');
var http = require('http');
var nodemailer = require('nodemailer');
var MemoryStore = require('connect').session.MemoryStore;
var app = express();
var dbPath = 'mongodb://t2k:t2kmongo1@linus.mongohq.com:10062/t2k';
var fs = require('fs');
var events = require('events');

// Create an http server
app.server = http.createServer(app);

// Create an event dispatcher
var eventDispatcher = new events.EventEmitter();
app.addEventListener = function(eventName, callback) {
    eventDispatcher.on(eventName, callback);
};
app.removeEventListener = function(eventName, callback) {
    eventDispatcher.removeListener(eventName, callback);
};
app.triggerEvent = function(eventName, eventOptions) {
    eventDispatcher.emit(eventName, eventOptions);
};

// Create a session store to share between methods
app.sessionStore = new MemoryStore();

// Import the data layer
var mongoose = require('mongoose');
var config = {
    mail: require('./config/mail.example')
};

// Import the models
var models = {
    Account: require('./models/Account')(app, config, mongoose, nodemailer)
};

app.configure(function() {
    app.sessionSecret = 'SocialNetYOLO';
    app.set('view engine', 'jade');
    app.use(express.static(__dirname + '/public'));
    app.use(express.limit('1mb'));
    app.use(express.bodyParser());
    app.use(express.cookieParser());
    app.use(express.session({
        secret: app.sessionSecret,
        key: 'express.sid',
        store: app.sessionStore
    }));
    mongoose.connect(dbPath, function onMongooseError(err) {
        if (err) throw err;
    });
});

// Import the routes ... clever
fs.readdirSync('routes').forEach(function(file) {
    if (file[0] === '.') return;
    var routeName = file.substr(0, file.indexOf('.'));
    //console.log('adding routes:  ' + routeName);
    require('./routes/' + routeName)(app, models);
});


app.get('/', function(req, res) {
    res.render('index.jade');
});


app.post('/contacts/find', function(req, res) {
    var searchStr = req.param('searchStr', null);
    if (null === searchStr) {
        res.send(400);
        return;
    }

    models.Account.findByString(searchStr, function onSearchDone(err, accounts) {
        if (err || accounts.length === 0) {
            res.send(404);
        }
        else {
            res.send(accounts);
        }
    });
});

// New in Chapter 9 - the server listens, instead of the app
app.server.listen(process.env.PORT);
console.log('Listening on process.env.PORT: ' + process.env.PORT);