Voices

await RunAnywhere.models.registerArchiveModel(
  id: 'vits-piper-en_US-lessac-medium',
  name: 'Piper TTS (US English - Medium)',
  archiveUrl:
      'https://github.com/RunanywhereAI/sherpa-onnx/releases/download/runanywhere-models-v1/vits-piper-en_US-lessac-medium.tar.gz',
  archiveType: ArchiveType.ARCHIVE_TYPE_TAR_GZ,
  structure: ArchiveStructure.ARCHIVE_STRUCTURE_NESTED_DIRECTORY,
  framework: InferenceFramework.INFERENCE_FRAMEWORK_SHERPA,
  modality: ModelCategory.MODEL_CATEGORY_SPEECH_SYNTHESIS,
  memoryRequirement: 65000000,
);

final voiceIds = await RunAnywhere.tts.availableVoices();   // List<String>

// Load a voice
await RunAnywhere.tts.loadVoice('vits-piper-en_US-lessac-medium');

// Switch
Future<void> switchVoice(String voiceId) async {
  await RunAnywhere.tts.unloadVoice();
  await RunAnywhere.tts.loadVoice(voiceId);
}

// Inspect what is loaded
print(RunAnywhere.tts.currentVoiceId);        // String?
final info = await RunAnywhere.tts.currentVoice();   // ModelInfo?

class VoiceSelectorWidget extends StatefulWidget {
  @override
  _VoiceSelectorWidgetState createState() => _VoiceSelectorWidgetState();
}

class _VoiceSelectorWidgetState extends State<VoiceSelectorWidget> {
  List<String> _voiceIds = const [];
  String? _selectedVoice;
  bool _isLoading = false;

  @override
  void initState() {
    super.initState();
    RunAnywhere.tts.availableVoices().then((ids) {
      setState(() => _voiceIds = ids);
    });
  }

  Future<void> _selectVoice(String voiceId) async {
    setState(() => _isLoading = true);

    try {
      await RunAnywhere.downloadModel(voiceId);
      await RunAnywhere.tts.loadVoice(voiceId);
      setState(() => _selectedVoice = voiceId);

      // Preview: synthesizes and plays through the SDK
      await RunAnywhere.speak('Hello, this is a preview of my voice.');
    } finally {
      setState(() => _isLoading = false);
    }
  }

  @override
  Widget build(BuildContext context) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Text('Select Voice', style: TextStyle(fontWeight: FontWeight.bold)),
        SizedBox(height: 8),
        IgnorePointer(
          ignoring: _isLoading,
          child: RadioGroup<String>(
            groupValue: _selectedVoice,
            onChanged: (id) {
              if (id != null) _selectVoice(id);
            },
            child: Column(
              mainAxisSize: MainAxisSize.min,
              children: _voiceIds
                  .map((id) => RadioListTile<String>(
                        value: id,
                        title: Text(id),
                      ))
                  .toList(),
            ),
          ),
        ),
        if (_isLoading) LinearProgressIndicator(),
      ],
    );
  }
}

await RunAnywhere.tts.loadVoice(SystemTTS.modelId);   // 'system-tts'
await RunAnywhere.speak('Hello world');