app.js

/*jslint node: true */
'use strict';

var express  = require('express'),
    connect  = require('connect'),
    hbs      = require('express-hbs'),
    http     = require('http'),
    fs       = require('fs'),
    mongoose = require('mongoose'),
    passport = require('passport'),
    auth     = require('./filters/authentication'),
    config   = require('./config');

module.exports = function(router) {
  mongoose.connect([
    'mongodb://',config.mongodb.url,':',config.mongodb.port,'/',config.mongodb.name
  ].join(''));
  auth.configure();

  var cookieParser = connect.cookieParser('multiplication-game-sess'),
      sessionStore = new (require('connect-mongo')(connect))({
        db: config.session.db
      }),
      socketeer    = require('./lib/socketeer'),
      app          = express()
        // Performance measurement
        .use(function(req, res, next) {
          var render = res.render;
          app._requestStarted = new Date();
          res.render = function() {
            app.logger.info('render.time', {
              url: req.url,
              time: (new Date())-app._requestStarted // in ms
            });
            render.apply(this, arguments);
          }
          next();
        })
        //.use(express.compess())
        .use(express.static(__dirname + '/public'))
        .use(require('connect-assets')())
        .use(cookieParser)
        .use(express.session({ store: sessionStore }))
        .use(express.bodyParser())
        .use(express.methodOverride())
        .use(passport.initialize())
        .use(passport.session())
        .use(connect.query())
        .use(socketeer.connect),
      server       = http.createServer(app),
      io           = require('socket.io').listen(server),

      initializers = fs.readdirSync(__dirname + '/config/initializers');

  initializers.forEach(function(filename) {
    require(__dirname + '/config/initializers/' + filename)(app);
  });

  // TODO: use helperContext on connect-assets to get rid of this globals:
  css.root = '/stylesheets';
  js.root  = '/javascripts';

  app.engine('hbs', hbs.express3({
    partialsDir: __dirname + '/views',
    defaultLayout: __dirname + '/views/layouts/website',
    layoutsDir: __dirname + '/views/layouts'
  }));
  app.set('view engine', 'hbs');
  app.set('views', __dirname + '/views');

  // load handlebars helpers
  fs.readdirSync(__dirname + '/views/helpers/').forEach(function(filename) {
    require(__dirname + '/views/helpers/' + filename);
  });

  // load all models so they can be used via mongoose.model()
  require('./models/game');
  require('./models/user');

  router(app);

  socketeer.start(io);

  app.socketeer = socketeer;
  app.server = server;
  app.io = io;

  // Production Readyness
  process.on('uncaughtException', function (err) {
    app.logger.error('Uncaught Exception: ', { message: err.message, stack: err.stack });
  });

  app.get('/health', function(req, res){
    res.send({
      pid: process.pid,
      memory: process.memoryUsage(),
      uptime: process.uptime()
    });
  });


  return app;
};