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index.js
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var inherits = require('util').inherits;
var osascript = require('node-osascript');
var applescript = require('applescript');
var Accessory, Service, Characteristic, UUIDGen;
var HomeKitMediaTypes;
var HKMTGen = require('./HomeKitMediaTypes.js');
module.exports = function(homebridge) {
Accessory = homebridge.platformAccessory;
Service = homebridge.hap.Service;
Characteristic = homebridge.hap.Characteristic;
UUIDGen = homebridge.hap.uuid;
HomeKitMediaTypes = HKMTGen(homebridge);
homebridge.registerPlatform("homebridge-itunes", "iTunes", ITunesPlatform, true);
Characteristic.prototype.updateValue = function(newValue, context){
if (newValue === undefined || newValue === null)
newValue = this.getDefaultValue();
// update our cached value
var oldValue = this.value;
this.value = newValue;
// emit a change event if necessary
if (oldValue !== newValue)
this.emit('change', { oldValue:oldValue, newValue:newValue, context:context });
}
}
function ITunesPlatform(log, config, api) {
var self = this;
self.log = log;
self.config = config || { "platform": "iTunes" };
self.accessories = {};
self.syncTimer = null;
self.pollInterval = 2000;
if (api) {
self.api = api;
self.api.on('didFinishLaunching', self.didFinishLaunching.bind(this));
}
}
ITunesPlatform.prototype.configureAccessory = function(accessory) {
if(accessory.context.iTunesMac){
this.configurePrimaryAccessory(accessory);
} else {
this.configureAirPlayAccessory(accessory);
}
}
ITunesPlatform.prototype.configurePrimaryAccessory = function(accessory) {
var self = this;
accessory.reachable = true;
this.primaryAccessory = accessory;
var cxPlayStateOn = accessory
.getService('Playing State')
.getCharacteristic(Characteristic.On);
var cxPlayState = accessory
.getService(HomeKitMediaTypes.PlaybackDeviceService)
.getCharacteristic(HomeKitMediaTypes.PlaybackState);
accessory.getPlaybackStateFromString = function(str){
switch (str) {
case "paused":
return HomeKitMediaTypes.PlaybackState.PAUSED;
break;
case "stopped":
return HomeKitMediaTypes.PlaybackState.STOPPED;
break;
default:
return HomeKitMediaTypes.PlaybackState.PLAYING;
break;
}
}
cxPlayState
.on('get', function(callback){
var tell = 'tell application "iTunes" to get player state';
osascript.execute(tell, function(err, rtn) {
if(err){
callback(err)
} else {
rtn = applescript.Parsers.parse(rtn);
callback(false, accessory.getPlaybackStateFromString(rtn));
}
}.bind(this));
}.bind(this))
.on('set', function(newVal, callback){
switch (newVal) {
case HomeKitMediaTypes.PlaybackState.PLAYING:
var tell =
'tell application "iTunes"\n'
+ 'if player state is paused or (exists current track) then play\n'
+ 'if player state is stopped then\n'
+ 'if exists user playlist "AutoPlay" then\n'
+ 'play user playlist "AutoPlay"\n'
+ 'else\n'
+ 'play (some playlist whose special kind is Music)\n'
+ 'end if\n'
+ 'end if\n'
+ 'end tell'
osascript.execute(tell, function(err, rtn) {
if(err){
callback(err)
} else {
callback();
}
}.bind(this));
break;
case HomeKitMediaTypes.PlaybackState.PAUSED:
osascript.execute('tell application "iTunes" to pause', function(err, rtn){
if(err){
callback(err)
} else {
callback();
}
}.bind(this));
break;
case HomeKitMediaTypes.PlaybackState.STOPPED:
osascript.execute('tell application "iTunes" to stop', function(err, rtn){
if(err){
callback(err)
} else {
callback();
}
}.bind(this));
break;
default:
callback("Invalid value for PlaybackState!");
break;
}
cxPlayStateOn.getValue(); // Sync up slave cx with this master cx
}.bind(this))
.on('change', function(newVal){
cxPlayStateOn.getValue(); // Sync up slave cx with this master cx
}.bind(this))
accessory
.getService(HomeKitMediaTypes.PlaybackDeviceService)
.getCharacteristic(HomeKitMediaTypes.SkipForward)
.on('set', function(newVal, callback){
osascript.execute('tell application "iTunes" to next track', function(err, rtn) {
if(err){
callback(err)
} else {
callback();
}
}.bind(this));
}.bind(this));
accessory
.getService(HomeKitMediaTypes.PlaybackDeviceService)
.getCharacteristic(HomeKitMediaTypes.SkipBackward)
.on('set', function(newVal, callback){
osascript.execute('tell application "iTunes" to back track', function(err, rtn) {
if(err){
callback(err)
} else {
callback();
}
}.bind(this));
}.bind(this));
accessory
.getService(HomeKitMediaTypes.AudioDeviceService)
.getCharacteristic(HomeKitMediaTypes.AudioVolume)
.on('get', function(callback){
var tell = 'tell application "iTunes" to get sound volume';
osascript.execute(tell, function(err, rtn) {
if (err) {
callback(err);
} else {
callback(false, parseInt(rtn));
}
});
})
.on('set', function(newVal, callback){
var tell = 'tell application "iTunes" to set sound volume to ' + parseInt(newVal);
osascript.execute(tell, function(err, rtn) {
if (err) {
callback(err);
} else {
callback(false);
}
});
});
// Hack switch characteristics to emulate media controls...
cxPlayStateOn
.on('get', function(callback){
cxPlayState
.getValue(function(err, val){
if(err)
callback(err);
else
callback(false, val == HomeKitMediaTypes.PlaybackState.PLAYING);
}.bind(this));
}.bind(this))
.on('set', function(newVal, callback){
if(newVal == true && cxPlayState.value !== HomeKitMediaTypes.PlaybackState.PLAYING)
cxPlayState.setValue(HomeKitMediaTypes.PlaybackState.PLAYING, callback);
if(newVal == false && cxPlayState.value == HomeKitMediaTypes.PlaybackState.PLAYING)
cxPlayState.setValue(HomeKitMediaTypes.PlaybackState.PAUSED, callback);
}.bind(this))
.getValue(function(err, value){
if(err)
self.log(err);
});
accessory
.getService('Track Skipper')
.getCharacteristic(Characteristic.On)
.on('get', function(callback){ callback('false'); })
.on('set', function(newVal, callback){
if(!newVal){ callback(); return; }
accessory
.getService(HomeKitMediaTypes.PlaybackDeviceService)
.getCharacteristic(HomeKitMediaTypes.SkipForward)
.setValue(true, function(err){
if(err)
callback(err);
else
callback();
setTimeout(function(){
accessory
.getService('Track Skipper')
.getCharacteristic(Characteristic.On)
.setValue(false);
}, 100);
});
}.bind(this));
accessory
.getService('Album Skipper')
.getCharacteristic(Characteristic.On)
.on('get', function(callback){ callback('false'); })
.on('set', function(newVal, callback){
if(!newVal){ callback(); return; }
var tell = 'tell application "iTunes"\n'
+ 'set |current album| to the album of the current track\n'
+ 'repeat while the album of the current track is equal to |current album|\n'
+ 'next track\n'
+ 'end repeat\n'
+ 'end tell';
osascript.execute(tell, function(err, rtn) {
if(err)
callback(err);
else
callback();
setTimeout(function(){
accessory
.getService('Album Skipper')
.getCharacteristic(Characteristic.On)
.setValue(false);
}, 100);
}.bind(this));
}.bind(this));
}
ITunesPlatform.prototype.configureAirPlayAccessory = function(accessory) {
var self = this;
accessory.reachable = true;
var rawDevice = accessory.context.rawDevice;
this.accessories[rawDevice.mac] = accessory;
accessory
.getService(Service.Switch)
.getCharacteristic(Characteristic.On)
.on('get', function(callback){
var tell = 'tell application "iTunes" to get selected of (AirPlay device id ' + parseInt(accessory.context.rawDevice.id) + ')';
osascript.execute(tell, function(err, rtn) {
if (err) {
callback(err);
} else {
//rtn = applescript.Parsers.parse(rtn);
callback(false, !!rtn ? true : false);
}
});
})
.on('set', function(newVal, callback){
// Now what we gonna do is...
var tell = 'tell application "iTunes" to set selected of (AirPlay device id ' + parseInt(accessory.context.rawDevice.id) + ') to ' + (newVal ? 'true' : 'false');
// First, we need to handle auto play/pause actions before changing state...
var cxPlaybackState = this.primaryAccessory
.getService(HomeKitMediaTypes.PlaybackDeviceService)
.getCharacteristic(HomeKitMediaTypes.PlaybackState);
if(newVal == true) {
// Go ahead and turn this one on now...
osascript.execute(tell, function(err, rtn) { if (err) callback(err); else callback(false); });
// If one AirPlay device turned on and not currently playing...
if(cxPlaybackState.value !== HomeKitMediaTypes.PlaybackState.PLAYING){
// Turn other AirPlay destinations off...
//TODO: Make this behavior configurable!
for(var k in this.accessories){
var apac = this.accessories[k];
if(!apac || apac === accessory || !apac.getService) continue;
apac
.getService(Service.Switch)
.getCharacteristic(Characteristic.On)
.setValue(false);
}
cxPlaybackState.setValue(HomeKitMediaTypes.PlaybackState.PLAYING)
}
} else {
// If are turning off the last AirPlay device, pause playback...
var anyOn = false;
for(var k in this.accessories){
var apac = this.accessories[k];
if(!apac || apac === accessory || !apac.getService) continue;
var isOn = apac
.getService(Service.Switch)
.getCharacteristic(Characteristic.On)
.value;
if(isOn){ anyOn = true; break; }
}
if(!anyOn) cxPlaybackState.setValue(HomeKitMediaTypes.PlaybackState.PAUSED);
// Now turn this one off...
osascript.execute(tell, function(err, rtn) { if (err) callback(err); else callback(false); });
}
}.bind(this))
.getValue(function(err, value){
if(err)
self.log(err);
else {
accessory.getService(Service.Switch).getCharacteristic(Characteristic.On).value = value;
}
});
accessory
.getService(HomeKitMediaTypes.AudioDeviceService)
.getCharacteristic(HomeKitMediaTypes.AudioVolume)
.on('get', function(callback){
var tell = 'tell application "iTunes" to get sound volume of (AirPlay device id ' + parseInt(accessory.context.rawDevice.id) + ')';
osascript.execute(tell, function(err, rtn) {
if (err) {
callback(err);
} else {
callback(false, parseInt(rtn));
}
});
})
.on('set', function(newVal, callback){
var tell = 'tell application "iTunes" to set sound volume of (AirPlay device id ' + parseInt(accessory.context.rawDevice.id) + ') to ' + parseInt(newVal);
osascript.execute(tell, function(err, rtn) {
if (err) {
callback(err);
} else {
callback(false);
}
});
})
.getValue(function(err, value){
if(err)
self.log(err);
else {
accessory.getService(HomeKitMediaTypes.AudioDeviceService).getCharacteristic(HomeKitMediaTypes.AudioVolume).value = value;
}
});
}
ITunesPlatform.prototype.didFinishLaunching = function() {
this.syncAccessories();
}
ITunesPlatform.prototype.syncAccessoriesScheduler = function(msec){
clearTimeout(this.syncTimer);
this.syncTimer = setTimeout(this.syncAccessories.bind(this), msec);
};
ITunesPlatform.prototype.syncAccessories = function() {
var syncAgainIn = this.syncAccessoriesScheduler.bind(this);
syncAgainIn(this.pollInterval);
// Update the primary accessory
var pa = this.primaryAccessory;
if(!pa){
osascript.execute('get the primary Ethernet address of (get system info)', function(err, rtn){
if(err) {
// erm...well this is awkward...Try again in a bit?
this.log(err);
this.log("ERROR: Failed creating iTunes main device, trying again in two seconds.");
syncAgainIn(2000);
} else {
// Messes up MAC addresses that start with a number >:-(
// The node-osascript parser is sufficient for this simple string.
//rtn = applescript.Parsers.parse(rtn);
this.addPrimaryAccessory(rtn);
}
}.bind(this));
return; // BRB...
} else {
osascript.execute('tell application "iTunes" to get {player state, sound volume, exists current track}', function(err, rtn){
if (err) {
this.log(err);
this.log("ERROR: Failed syncing iTunes main device, trying again in two seconds.");
syncAgainIn(2000);
return;
}
rtn = applescript.Parsers.parse(rtn);
if (Array.isArray(rtn)) {
pa
.getService(HomeKitMediaTypes.PlaybackDeviceService)
.getCharacteristic(HomeKitMediaTypes.PlaybackState)
.updateValue(pa.getPlaybackStateFromString(rtn[0]));
pa
.getService(HomeKitMediaTypes.AudioDeviceService)
.getCharacteristic(HomeKitMediaTypes.AudioVolume)
.updateValue(parseInt(rtn[1]));
if(rtn[2]){
this.syncMediaInformation();
}
}
}.bind(this));
}
// Get the id and name of all the AirPlay devices...
var tell = 'tell application "iTunes"\n'
+ 'set apDevMap to {}\n'
+ 'repeat with aDevice in (AirPlay devices)\n'
//+ "copy {id:aDevice's id, name:aDevice's name, mac:aDevice's network address} to the end of the apDevMap\n"
+ "copy {aDevice's id, aDevice's name, aDevice's network address, aDevice's selected, aDevice's sound volume} to the end of the apDevMap\n"
+ 'end repeat\n'
+ 'get apDevMap\n'
+ 'end tell\n';
osascript.execute(tell, function(err, rtn) {
if (err) {
this.log(err);
this.log("ERROR: Failed getting AirPlay devices--iTunes may still be launching. Trying again in two seconds.");
syncAgainIn(2000);
return;
}
rtn = applescript.Parsers.parse(rtn);
if (Array.isArray(rtn)) {
for(var i = 0; i < rtn.length; i++)
rtn[i] = {
id: rtn[i][0],
name: rtn[i][1],
mac: (rtn[i][2] == "missing value" ? null : rtn[i][2]),
selected: rtn[i][3] == "true" ? true : false,
volume: parseInt(rtn[i][4])
};
this.rawDevices = rtn;
// Update id's and values and add any devices we didn't have before...
var foundMacs = {};
for (var i = 0; i < this.rawDevices.length; i++) {
var rawDevice = this.rawDevices[i];
if(!rawDevice.mac) rawDevice.mac = '00-host-audio';
foundMacs[rawDevice.mac] = true;
if (this.accessories[rawDevice.mac]) {
var accessory = this.accessories[rawDevice.mac];
accessory.context.rawDevice = rawDevice;
var volCx = accessory.getService(HomeKitMediaTypes.AudioDeviceService).getCharacteristic(HomeKitMediaTypes.AudioVolume);
if(volCx.value != rawDevice.volume)
volCx.updateValue(rawDevice.volume);
var onCx = accessory.getService(Service.Switch).getCharacteristic(Characteristic.On);
if(onCx.value != rawDevice.selected)
onCx.updateValue(rawDevice.selected);
if(!accessory.reachable) accessory.updateReachability(true);
} else {
this.addAirPlayAccessory(rawDevice);
}
}
// Set any devices now missing to unreachable...
for(var m in this.accessories){
if(this.accessories[m] instanceof Accessory && !foundMacs[m])
this.accessories[m].updateReachability(false);
}
}
}.bind(this));
}
ITunesPlatform.prototype.syncMediaInformation = function(){
var tell = 'tell application "iTunes"\n'
+'set theResult to {exists current track}\n'
+'if exists current track then\n'
+' set end of theResult to name of current track\n'
+' set end of theResult to album of current track\n'
+' set end of theResult to artist of current track\n'
+' set end of theResult to duration of current track\n'
+' set end of theResult to player position\n'
+'end if\n'
+'get theResult\n'
+'end tell';
osascript.execute(tell, function(err, rtn){
if (err) {
this.log(err);
this.log("ERROR: Failed syncing media information, trying again in two seconds.");
this.syncAccessoriesScheduler(2000);
return;
}
var pa = this.primaryAccessory;
if (!Array.isArray(rtn)) rtn = applescript.Parsers.parse(rtn); // erm...try the other parser when the default fails?
if (Array.isArray(rtn) && rtn[0]) {
pa
.getService(HomeKitMediaTypes.PlaybackDeviceService)
.getCharacteristic(HomeKitMediaTypes.MediaItemName)
.updateValue(rtn[1]);
pa
.getService(HomeKitMediaTypes.PlaybackDeviceService)
.getCharacteristic(HomeKitMediaTypes.MediaItemAlbumName)
.updateValue(rtn[2]);
pa
.getService(HomeKitMediaTypes.PlaybackDeviceService)
.getCharacteristic(HomeKitMediaTypes.MediaItemArtist)
.updateValue(rtn[3]);
pa
.getService(HomeKitMediaTypes.PlaybackDeviceService)
.getCharacteristic(HomeKitMediaTypes.MediaItemDuration)
.updateValue(rtn[4]);
pa
.getService(HomeKitMediaTypes.PlaybackDeviceService)
.getCharacteristic(HomeKitMediaTypes.MediaCurrentPosition)
.updateValue(rtn[5]);
} else {
pa
.getService(HomeKitMediaTypes.PlaybackDeviceService)
.getCharacteristic(HomeKitMediaTypes.MediaItemName)
.updateValue("");
pa
.getService(HomeKitMediaTypes.PlaybackDeviceService)
.getCharacteristic(HomeKitMediaTypes.MediaItemAlbumName)
.updateValue("");
pa
.getService(HomeKitMediaTypes.PlaybackDeviceService)
.getCharacteristic(HomeKitMediaTypes.MediaItemArtist)
.updateValue("");
pa
.getService(HomeKitMediaTypes.PlaybackDeviceService)
.getCharacteristic(HomeKitMediaTypes.MediaItemDuration)
.updateValue(0);
pa
.getService(HomeKitMediaTypes.PlaybackDeviceService)
.getCharacteristic(HomeKitMediaTypes.MediaCurrentPosition)
.updateValue(0);
}
}.bind(this));
}
ITunesPlatform.prototype.addPrimaryAccessory = function(mac){
var self = this;
var uuid = UUIDGen.generate("iTunes:" + mac);
var name = "iTunes";
var newAccessory = new Accessory(name, uuid, 1); // 1 = Accessory.Category.OTHER
newAccessory.context.iTunesMac = mac;
newAccessory.addService(Service.Switch, "Playing State", "playstate").name = "playstate";
newAccessory.addService(HomeKitMediaTypes.AudioDeviceService, name);
newAccessory.addService(HomeKitMediaTypes.PlaybackDeviceService, name);
newAccessory.addService(Service.Switch, "Track Skipper", "skiptrackforward").name = "skiptrackforward";
newAccessory.addService(Service.Switch, "Album Skipper", "skipalbumforward").name = "skipalbumforward";
newAccessory
.getService(Service.AccessoryInformation)
.setCharacteristic(Characteristic.Manufacturer, "Apple")
.setCharacteristic(Characteristic.Model, "iTunes")
.setCharacteristic(Characteristic.SerialNumber, mac);
newAccessory.getService("playstate").getCharacteristic(Characteristic.On).displayName = "Playing";
newAccessory.getService("skiptrackforward").getCharacteristic(Characteristic.On).displayName = "Track Skipper";
newAccessory.getService("skipalbumforward").getCharacteristic(Characteristic.On).displayName = "Album Skipper";
this.configureAccessory(newAccessory);
this.api.registerPlatformAccessories("homebridge-itunes", "iTunes", [newAccessory]);
// we came here from an aborted sync, start it again...
this.syncAccessories();
}
ITunesPlatform.prototype.addAirPlayAccessory = function(rawDevice) {
var self = this;
var uuid = UUIDGen.generate(rawDevice.mac);
var newAccessory = new Accessory(rawDevice.name, uuid, 1); // 1 = Accessory.Category.OTHER
newAccessory.context.rawDevice = rawDevice;
newAccessory.addService(Service.Switch, rawDevice.name);
newAccessory.addService(HomeKitMediaTypes.AudioDeviceService, rawDevice.name);
newAccessory
.getService(Service.AccessoryInformation)
.setCharacteristic(Characteristic.Manufacturer, "Apple")
.setCharacteristic(Characteristic.Model, "AirPlay Speaker")
.setCharacteristic(Characteristic.SerialNumber, rawDevice.mac);
this.configureAccessory(newAccessory);
this.api.registerPlatformAccessories("homebridge-itunes", "iTunes", [newAccessory]);
}
ITunesPlatform.prototype.removeAccessory = function(accessory) {
if (accessory) {
var mac = accessory.context.rawDevice.mac;
this.api.unregisterPlatformAccessories("homebridge-itunes", "iTunes", [accessory]);
delete this.accessories[mac];
}
}