Voices

// US English - Lessac (recommended default)
Onnx.addModel(
  id: 'vits-piper-en_US-lessac-medium',
  name: 'Piper US English (Lessac)',
  url: 'https://github.com/RunanywhereAI/sherpa-onnx/releases/download/runanywhere-models-v1/vits-piper-en_US-lessac-medium.tar.bz2',
  modality: ModelCategory.textToSpeech,
);

// US English - Amy (female)
Onnx.addModel(
  id: 'vits-piper-en_US-amy-medium',
  name: 'Piper US English (Amy)',
  url: 'https://github.com/RunanywhereAI/sherpa-onnx/releases/download/runanywhere-models-v1/vits-piper-en_US-amy-medium.tar.bz2',
  modality: ModelCategory.textToSpeech,
);

// Load default voice
await RunAnywhere.loadTTSVoice('vits-piper-en_US-lessac-medium');

// Switch to different voice
Future<void> switchVoice(String voiceId) async {
  await RunAnywhere.unloadTTSVoice();
  await RunAnywhere.loadTTSVoice(voiceId);
}

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

class _VoiceSelectorWidgetState extends State<VoiceSelectorWidget> {
  final voices = [
    {'id': 'vits-piper-en_US-lessac-medium', 'name': 'Lessac (Male)'},
    {'id': 'vits-piper-en_US-amy-medium', 'name': 'Amy (Female)'},
    {'id': 'vits-piper-en_US-ryan-medium', 'name': 'Ryan (Male)'},
  ];

  String? _selectedVoice;
  bool _isLoading = false;

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

    try {
      // Download if needed
      await for (final p in RunAnywhere.downloadModel(voiceId)) {
        if (p.state.isCompleted) break;
      }

      // Load voice
      await RunAnywhere.loadTTSVoice(voiceId);
      setState(() => _selectedVoice = voiceId);

      // Preview voice
      await _previewVoice();
    } finally {
      setState(() => _isLoading = false);
    }
  }

  Future<void> _previewVoice() async {
    final result = await RunAnywhere.synthesize(
      'Hello, this is a preview of my voice.',
    );
    // Play audio...
  }

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

// System TTS is automatically available
// Use it for simple cases or as fallback
import 'package:flutter_tts/flutter_tts.dart';

final flutterTts = FlutterTts();

// List available system voices
final voices = await flutterTts.getVoices;

// Speak with system voice
await flutterTts.speak('Hello world');