fix bug happens with " and rewrite applescript to javascript

applescripts/iTunesTransport.js

@@ -0,0 +1,135 @@
+function IsRunning () {
+  ObjC.import('stdlib')
+  ObjC.import('AppKit')
+  var isRunning = false
+  var apps = $.NSWorkspace.sharedWorkspace.runningApplications
+  apps = ObjC.unwrap(apps)
+  var app
+  for (var i = 0, j = apps.length; i < j; i++) {
+    app = apps[i]
+    if (typeof app.bundleIdentifier.isEqualToString === 'undefined') {
+      continue;
+    }
+    if (app.bundleIdentifier.isEqualToString('com.apple.iTunes')) {
+      isRunning = true;
+      break;
+    }
+  }
+  return isRunning
+}
+
+function IsPlaying() {
+  if (IsRunning()) {
+    return Application('iTunes').playerState() === 'playing'
+  }
+  return false
+}
+
+function GetCurrentTrack() {
+  if (!IsPlaying()) {
+    return null
+  }
+  var iTunes = Application('iTunes')
+  var track = iTunes.currentTrack
+  return JSON.stringify({
+    name: track.name(),
+    artist: track.artist(),
+    album: track.album()
+  })
+}
+
+function PausePlaying() {
+  if (!IsRunning) {
+    Application('iTunes').pause()
+  }
+  return JSON.stringify({ok: true})
+}
+
+function StartPlaying() {
+  var iTunes = Application('iTunes')
+  iTunes.launch()
+  iTunes.play()
+  return GetCurrentTrack()
+}
+
+function StopPlaying() {
+  if (IsRunning()) {
+    Application('iTunes').stop()
+  }
+  return JSON.stringify({ok: true})
+}
+
+function PlayNextTrack() {
+  var iTunes = Application('iTunes')
+  if (!IsRunning()) {
+    iTunes.activate()
+  }
+  iTunes.nextTrack()
+  StartPlaying()
+}
+
+function PlayPreviousTrack() {
+  var iTunes = Application('iTunes')
+  if (!IsRunning()) {
+    iTunes.activate()
+  }
+  iTunes.previousTrack()
+  StartPlaying()
+}
+
+function FadeOut () {
+  if (IsRunning() && IsPlaying()) {
+    var iTunes = Application('iTunes')
+    var originalVol = iTunes.soundVolume()
+    var currentVol = iTunes.soundVolume()
+    while(currentVol > 0) {
+      currentVol--
+      iTunes.soundVolume = currentVol
+      delay(0.02)
+    }
+    StopPlaying()
+    iTunes.soundVolume = originalVol
+  }
+}
+
+function FadeIn () {
+  var iTunes = Application('iTunes')
+  if (!IsRunning()) {
+    iTunes.activate()
+  }
+  if (!IsPlaying()) {
+    var originalVol = iTunes.soundVolume()
+    var currentVol = 0
+    iTunes.soundVolume = currentVol
+    iTunes.play()
+    while(currentVol < originalVol) {
+      currentVol++
+      iTunes.soundVolume = currentVol
+      delay(0.02)
+    }
+    return GetCurrentTrack()
+  }
+}
+
+function run(argv) {
+  var command = argv[0]
+  if (command === "currenttrack") {
+    return GetCurrentTrack()
+  } else if( command === "play") {
+    return StartPlaying()
+  } else if( command === "pause") {
+    return PausePlaying()
+  } else if( command === "stop") {
+    return StopPlaying()
+  } else if( command === "next") {
+    return PlayNextTrack()
+  } else if( command === "previous") {
+    return PlayPreviousTrack()
+  } else if( command === "fadeout") {
+    return FadeOut()
+  } else if( command === "fadein") {
+    return FadeIn()
+  } else {
+    return JSON.stringify({error: 'this command is not supported'})
+  }
+}

index.js

@@ -12,7 +12,7 @@ var Playback = function() {
     this.runTransportScript = function(command, callback) {
         var scriptPath = this.isWindows ?
             path.join(__dirname, 'windows_scripts', 'iTunes.js') :
-            path.join(__dirname, 'applescripts', 'ITunesTransport.scpt');
+            path.join(__dirname, 'applescripts', 'ITunesTransport.js');
         var scriptRunner = this.isWindows ?
             spawn('cscript', ['//Nologo', scriptPath, command]) :
             spawn('osascript', [scriptPath, command]);