Using ID Site with Stormpath's Node SDK

server.js

/*** Sources: https://github.com/stormpath/stormpath-sdk-node/blob/master/lib/resource/Application.js#L122
              https://docs.stormpath.com/rest/product-guide/latest/idsite.html ***/

'use strict';

var stormpath = require('stormpath');
var http = require('http');
var Router = require('router');
var finalhandler = require('finalhandler');

var PORT = 3000;
var router = Router();

var server = http.createServer(function onRequest(req, res) {
  router(req, res, finalhandler(req, res));
});

var apiKey = new stormpath.ApiKey(
  process.env.STORMPATH_CLIENT_APIKEY_ID,
  process.env.STORMPATH_CLIENT_APIKEY_SECRET
);

var client = new stormpath.Client({ apiKey: apiKey, baseUrl: 'https://api.stormpath.com/v1' });
var applicationHref = 'https://api.stormpath.com/v1/applications/$APP_ID';

//Redirect user to ID Site when he lands on http://localhost:3000/login
router.get('/login', function(req, res) {
  client.getApplication(applicationHref, function(err, application) {
    if (err) {
      console.error(err);
      res.end(500);
    } else {
      var url = application.createIdSiteUrl({
        callbackUri: 'http://localhost:3000/idSiteResult'
      });
      res.writeHead(302, {"Location": url});
      res.end();
    }
  });
});

//Handle the JWT response, and display the account (if it has successfully authenticated)
router.get('/idSiteResult', function (req, res) {
  client.getApplication(applicationHref, function(err, application) {
    application.handleIdSiteCallback(req.url, function (err, idSiteAuthenticationResult) {
      if (err) {
        console.error(err);
        res.end(500);
      } else {
        res.writeHead(200, {'Content-type': 'application/json'});
        res.write(JSON.stringify(idSiteAuthenticationResult.account));
        res.end();
      }
    });
  });
});

server.listen(3000);