Integrating ACS with NODE JS - This works, BUT I want to migrate it to using the new Node.ACS platform

app.js

// SEE QUESTION IN QA FORUM
// http://developer.appcelerator.com/question/142378/integrating-nodeacs-with-expressjs-not-working
// @aaronksaunders
//

/**
 * Module dependencies.
 */

var express = require('express');
var querystring = require('querystring');
var https = require('https');

var app = module.exports = express();
var appKey = '--APP KEY HERE--'; //APP Key 

// config

app.set('view engine', 'ejs');
app.set('views', __dirname + '/views');

// middleware

app.use(express.bodyParser());
app.use(express.cookieParser('shhhh, very secret'));
app.use(express.session());

// Session-persisted message middleware

app.use(function(req, res, next){
  var err = req.session.error
    , msg = req.session.success;
  delete req.session.error;
  delete req.session.success;
  res.locals.message = '';
  if (err) res.locals.message = '<p class="msg error">' + err + '</p>';
  if (msg) res.locals.message = '<p class="msg success">' + msg + '</p>';
  next();
});


// Authenticate using our plain-object database of doom!
function authenticate(name, pass, fn) {
  if (!module.parent) {
	  console.log('authenticating %s:%s', name, pass);
  }

  var data = querystring.stringify({
          login: name,
          password: pass
  });


  var options = {
            host: 'api.cloud.appcelerator.com',
            port: 443,
            path: '/v1/users/login.json?key=' + appKey,
            method: 'POST',
            headers: {'Content-Length': data.length}
    };
        
    var req = https.request(options, function(res) {
            res.on('data', function(d) {
                    process.stdout.write(d);
                    var json = JSON.parse(d);
                    var session_id = json.meta.session_id;
                    var user = session_id ? json.response.users[0] : undefined;
                    
				    if (!session_id) {
						return fn(json.message);
					} else if ( session_id ) {
						return fn(null, user, session_id);
					} else {
				    	fn(new Error('invalid password'));
					}
            });
    });
    req.write(data);
    req.end(); 
}

function restrict(req, res, next) {
  if (req.session.user) {
    next();
  } else {
    req.session.error = 'Access denied!';
    res.redirect('/login');
  }
}

app.get('/', function(req, res){
  res.redirect('login');
});

app.get('/restricted', restrict, function(req, res){
  res.send('Wahoo! restricted area');
});

app.get('/logout', function(req, res){
  // destroy the user's session to log them out
  // will be re-created next request
  req.session.destroy(function(){
    res.redirect('/');
  });
});

app.get('/login', function(req, res){
  if (req.session.user) {
    req.session.success = 'Authenticated as <strong>' + req.session.user.username + " " + req.session.user_session_id
      + '</strong> click to <a href="/logout">logout</a>. '
      + ' You may now access <a href="/restricted">/restricted</a>.';
  }
  res.render('login');
});

app.post('/login', function(req, res){
  authenticate(req.body.username, req.body.password, function(err, user, session_id){
    if (user) {
      // Regenerate session when signing in
      // to prevent fixation 
      req.session.regenerate(function(){
        // Store the user's primary key 
        // in the session store to be retrieved,
        // or in this case the entire user object
		
		console.log('session '+JSON.stringify(req.session));
		console.log('user '+JSON.stringify(user));
		
        req.session.user = user;
        req.session.user_session_id = session_id;
		
		console.log(JSON.stringify(req.session));
		
        res.redirect('back');
      });
    } else {
      req.session.error = 'Authentication failed, please check your '
        + ' username and password.'
        + ' (use "tj" and "foobar")';
      res.redirect('login');
    }
  });
});

if (!module.parent) {
  app.listen(3000);
  console.log('Express started on port 3000');
}