Building a Scrabble Companion with Gemini 2.0 : Move Explanations and Voice Synthesis

23-board-ai-smart-scrabble-gemini-2.dart

class AIService {
  final LLMService _llmService;
  bool _isTtsInitialized = false;

  Future<String> generateMoveExplanation(
    String playerName,
    Move move,
    int currentScore,
  ) async {
    final prompt = '''
    Explain this Scrabble move played by $playerName:
    - Word: ${move.word}
    - Score: ${move.score} points
    - Tiles: ${move.tiles.map((t) => '${t.letter}(${t.points})').join(', ')}
    - Current total: $currentScore points

    Keep it brief but informative in 2 sentences maximum.
    ''';

    return await _llmService.generateExplanation(prompt);
  }

  Future<List<int>> convertToSpeech(String text, AppLanguage language) async {
    if (!_isTtsInitialized) {
      await _initializeTts();
    }

    final targetVoice = language == AppLanguage.english
        ? 'en-US-Wavenet-I'  // English male voice
        : 'fr-FR-Wavenet-D'; // French male voice

    final params = TtsParamsGoogle(
      voice: voice,
      audioFormat: AudioOutputFormatGoogle.linear16,
      text: text,
    );

    final ttsResponse = await TtsGoogle.convertTts(params);
    return ttsResponse.audio.buffer.asUint8List().toList();
  }
}