Add samples for voices

apple/OmnivoreKit/Sources/App/Views/Profile/TextToSpeechVoiceSelectionView.swift

@@ -9,6 +9,8 @@
     let language: VoiceLanguage
     let showLanguageChanger: Bool
 
+    @State var playbackSample: String? = nil
+
     init(forLanguage: VoiceLanguage, showLanguageChanger: Bool) {
       self.language = forLanguage
       self.showLanguageChanger = showLanguageChanger
@@ -45,27 +47,7 @@
       ForEach(language.categories, id: \.self) { category in
         Section(category.rawValue) {
           ForEach(audioController.voiceList?.filter { $0.category == category } ?? [], id: \.key.self) { voice in
-            HStack {
-              Button(action: {
-                audioController.setPreferredVoice(voice.key, forLanguage: language.key)
-                audioController.currentVoice = voice.key
-              }, label: {
-                HStack {
-                  Text(voice.name)
-                  Spacer()
-
-                  if voice.selected {
-                    if audioController.isPlaying, audioController.isLoading {
-                      ProgressView()
-                    } else {
-                      Image(systemName: "checkmark")
-                    }
-                  }
-                }
-                .contentShape(Rectangle())
-              })
-                .buttonStyle(PlainButtonStyle())
-            }
+            voiceRow(for: voice)
           }
         }
       }
@@ -83,6 +65,39 @@
 
     func voiceRow(for voice: VoiceItem) -> some View {
       HStack {
+        Button(action: {
+          if audioController.isPlayingSample(voice: voice.key) {
+            playbackSample = nil
+            audioController.stopVoiceSample()
+          } else {
+            playbackSample = voice.key
+            audioController.playVoiceSample(voice: voice.key)
+            Timer.scheduledTimer(withTimeInterval: 2.0, repeats: true) { timer in
+              let playing = audioController.isPlayingSample(voice: voice.key)
+              if playing {
+                playbackSample = voice.key
+              } else if !playing {
+                // If the playback sample is something else, its taken ownership
+                // of the value so we just ignore it and shut down our timer.
+                if playbackSample == voice.key {
+                  playbackSample = nil
+                }
+                timer.invalidate()
+              }
+            }
+          }
+        }, label: {
+          if playbackSample == voice.key {
+            Image(systemName: "stop.circle")
+              .font(.appTitleTwo)
+              .padding(.trailing, 16)
+          } else {
+            Image(systemName: "play.circle")
+              .font(.appTitleTwo)
+              .padding(.trailing, 16)
+          }
+        })
+
         Button(action: {
           audioController.setPreferredVoice(voice.key, forLanguage: language.key)
           audioController.currentVoice = voice.key

apple/OmnivoreKit/Sources/Services/AudioSession/AudioController.swift

@@ -246,6 +246,8 @@
     var durations: [Double]?
     var lastReadUpdate = 0.0
 
+    var samplePlayer: AVAudioPlayer?
+
     public init(dataService: DataService) {
       self.dataService = dataService
 
@@ -631,9 +633,13 @@
 
     public func playVoiceSample(voice: String) {
       do {
-        if let url = Bundle.main.url(forResource: "tts-voice-sample-\(voice)", withExtension: "mp3") {
-          let player = try AVAudioPlayer(contentsOf: url, fileTypeHint: AVFileType.mp3.rawValue)
-          player.play()
+        pause()
+
+        if let url = Bundle(url: UtilsPackage.bundleURL)?.url(forResource: voice, withExtension: "mp3") {
+          samplePlayer = try AVAudioPlayer(contentsOf: url, fileTypeHint: AVFileType.mp3.rawValue)
+          if !(samplePlayer?.play() ?? false) {
+            throw BasicError.message(messageText: "Unable to playback audio")
+          }
         } else {
           NSNotification.operationFailed(message: "Error playing voice sample.")
         }
@@ -643,6 +649,20 @@
       }
     }
 
+    public func isPlayingSample(voice: String) -> Bool {
+      if let samplePlayer = self.samplePlayer, let url = Bundle(url: UtilsPackage.bundleURL)?.url(forResource: voice, withExtension: "mp3") {
+        return samplePlayer.url == url && samplePlayer.isPlaying
+      }
+      return false
+    }
+
+    public func stopVoiceSample() {
+      if let samplePlayer = self.samplePlayer {
+        samplePlayer.stop()
+        self.samplePlayer = nil
+      }
+    }
+
     private func updateDurations(oldPlayback: Double, newPlayback: Double) {
       if let oldDurations = durations {
         durations = oldDurations.map { $0 * oldPlayback / newPlayback }

apple/OmnivoreKit/Sources/Services/AudioSession/Voices.swift

@@ -87,7 +87,7 @@ public enum Voices {
   ]
 
   public static let UltraPairs = [
-    VoicePair(firstKey: "Larry", secondKey: "susan", firstName: "Larry", secondName: "Susan", language: "en-US", category: .enUS),
+    VoicePair(firstKey: "Larry", secondKey: "Susan", firstName: "Larry", secondName: "Susan", language: "en-US", category: .enUS),
 
     VoicePair(firstKey: "Jordan", secondKey: "William", firstName: "Jordan", secondName: "William", language: "en-US", category: .enUS),
     VoicePair(firstKey: "Adrian", secondKey: "Anthony", firstName: "Adrian", secondName: "Anthony", language: "en-US", category: .enUS),