This is a rudimentary Homey app for retrieving train schedules from the Dutch Railways, but it has never been made into an actual app.

ns.js

/**
 * This is a rudimentary Homey app for retrieving train schedules from the Dutch Railways, but it has never been made into an actual app.
 * This gist has been created by Jonathan Juursema in Jan '15. You are free to use this code in your own project.
 */

// Requirements
var prompt = require('prompt');
var moment = require('moment-timezone');

// NS API Credentials
var nsApi = require('ns-api');
nsApi.username = 'username';
nsApi.password = 'password';

// Init variables
var nsHomeStation = null;

// Is user being asked for home station?
var askingForHomeStation = true;

// Load stations.
var nsStations;
nsApi.stations(function(err,data){
  nsStations = data;
  iterate();
});

function validateStation(name) {
  for (nsStationCode in nsStations) {
    var nsStation = nsStations[nsStationCode];
    if (nsStation.Namen.Lang.toLowerCase() == name) {
      return nsStation;
    }
    if (nsStation.Synoniemen != 0) {
      if (typeof nsStation.Synoniemen.Synoniem === 'string') {
        if (nsStation.Synoniemen.Synoniem.toLowerCase() == name) {
          return nsStation;
        }
      } else {
        for (nsSynoniem in nsStation.Synoniemen.Synoniem) {
          if (nsStation.Synoniemen.Synoniem[nsSynoniem].toLowerCase() == name) {
            return nsStation;
          }
        }
      }
    }
  }
  return false;
}

console.log('Wat is je voorkeursstation?');

// Iterative function
function iterate() {
  prompt.start();
  // Simulate text input
  prompt.get('input', function(e,r) {
  
    var input = r.input.toLowerCase().replace(/[^\w\s]/gi, '');
  
    // Quit simulation
    if (input == 'quit') {
      console.log("Okdoei!");
      process.exit(code=0);
    }
    
    // Test simulation
    else if (input.indexOf('test') > -1) {
      console.log("Pong!");
    }
    
    // User is being asked for home station!
    else if (askingForHomeStation == true) {
      var validStation = validateStation(input);
      if (!validStation) {
        console.log('Dit is geen geldig station! Wat is je voorkeursstation?');
      } else {
        nsHomeStation = validStation;
        console.log('Je voorkeursstation is ingesteld op '+nsHomeStation.Namen.Lang+'!');
        askingForHomeStation = false;
      }
      iterate();
    }
    
    // No home station set.
    else if (nsHomeStation == null) {
      console.log('Wat is je voorkeursstation?');
      askingForHomeStation == true;;
      iterate();
    }
    
    // See next train.
    else if (input.indexOf('volgende trein') > -1) {
      var input = input.split('volgende trein naar ');
      var destination = input[1];
      destination = validateStation(destination);
      if (!destination) {
        console.log("Dit is geen geldig aankomststation!");
      } else {
        nsApi.reisadvies(
          {
            fromStation: nsHomeStation.Code,
            toStation: destination.Code,
            departure: true
          },
          function( err, data ) {
            var huidigeTijd = moment();
            for (nsVertrekken in data) {
              var nsVertrek = data[nsVertrekken];
              var vertrekTijd = moment(nsVertrek.GeplandeVertrekTijd);
              if (vertrekTijd.unix() > huidigeTijd.unix()) {
                console.log("De volgende trein vertrekt om "+vertrekTijd.tz('Europe/Amsterdam').format('HH:mm')+" vanaf station "+nsHomeStation.Namen.Lang+" op spoor "+nsVertrek.ReisDeel[0].ReisStop[0].Spoor+".");
                if (nsVertrek.ReisDeel.length > 1) {
                  console.log("Voor deze reis moet je "+(nsVertrek.ReisDeel.length-1)+" keer overstappen.");
                  for (nsReisdeel in nsVertrek.ReisDeel) {
                    if (nsReisdeel == 0) continue;
                    console.log("Op "+nsVertrek.ReisDeel[nsReisdeel].ReisStop[0].Naam+" stap je over naar spoor "+nsVertrek.ReisDeel[nsReisdeel].ReisStop[0].Spoor+", vertrek om "+moment(nsVertrek.ReisDeel[nsReisdeel].ReisStop[0].Tijd).tz('Europe/Amsterdam').format('HH:mm')+".");
                  }
                }
                console.log("Je arriveert dan op "+destination.Namen.Lang+" om "+moment(nsVertrek.GeplandeAankomstTijd).tz('Europe/Amsterdam').format('HH:mm')+".");
                break;
              }
            }
            iterate();
          }
        );
      }      
    }
    
    // Fallback
    else {
      console.log("Asjemenou?");
    }
  });
}