rough script to display artist/title and use media keys on musikCube/Linux

musikG15.js

const WebSocket = require('ws');

var EventEmitter = require('events').EventEmitter;

const ws = new WebSocket('ws://127.0.0.1:7905');

var g15composer = require('g15composer').init('/home/antoine/dev/musikG15/pipe', 'notifications');
 
ws.on('open', function open() {
  ws.send('{    "name": "authenticate",    "type": "request",    "id": "foobar",    "options": {        "password": ""    }}');
});
 
ws.on('message', function incoming(data) {
  //console.log(data);
  var json = JSON.parse(data);
  //console.log(json.name);
  if(json.options){
    if(json.options.playing_track){
      console.log(json.options.playing_track.title);
      if (json.options.state == "paused") {
        g15composer.push("musikCube - paused", json.options.playing_track.artist + " - " + json.options.playing_track.title );
      } else {
        g15composer.push("musikCube", json.options.playing_track.artist + " - " + json.options.playing_track.title );
      }
    }
  }
});

function listenDbus () {
	var e = new EventEmitter();

	var DBus = require('dbus');
	var dbus = new DBus();
	var bus = dbus.getBus('session');
	bus.getInterface('org.gnome.SettingsDaemon', '/org/gnome/SettingsDaemon/MediaKeys', 'org.gnome.SettingsDaemon.MediaKeys', function(err, iface) {
		e.emit('connected');
		iface.on('MediaPlayerKeyPressed', function (n, value) {
			switch (value) {
				case 'Play': e.emit('play'); return;
				case 'Next': e.emit('next'); return;
				case 'Previous': e.emit('back'); return;
				case 'Stop': e.emit('stop'); return;
			}
		});
		iface.GrabMediaPlayerKeys(0, 'org.gnome.SettingsDaemon.MediaKeys');
	});
	return e;
}

function listen () {
	if (process.platform == 'linux') {
		return listenDbus();

	} else {
		throw new Error('unsupported platform', process.platform)
	}
}

var e = listen();
e.on('connected', function () {
    console.log('connected');
})
e.on('play', function () {
    console.log('play');
    ws.send('{    "name": "pause_or_resume",    "type": "request",    "id": "foobar",    "options": {}}');
})
e.on('next', function () {
    console.log('next');
    ws.send('{    "name": "next",    "type": "request",    "id": "foobar",    "options": {}}');
})
e.on('back', function () {
    console.log('back');
    ws.send('{    "name": "previous",    "type": "request",    "id": "foobar",    "options": {}}');
})
e.on('stop', function () {
  console.log('back');
  ws.send('{    "name": "stop",    "type": "request",    "id": "foobar",    "options": {}}');
})