164 lines
4.9 KiB
Dart
164 lines
4.9 KiB
Dart
import 'package:em2rp/services/text_to_speech_service.dart';
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import 'package:em2rp/services/cloud_text_to_speech_service.dart';
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import 'package:em2rp/utils/debug_log.dart';
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/// Service hybride intelligent pour le Text-to-Speech
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/// Essaie d'abord Web Speech API (gratuit, rapide), puis fallback vers Cloud TTS
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class SmartTextToSpeechService {
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static bool _initialized = false;
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static bool _webSpeechWorks = true; // Optimiste par défaut
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static int _webSpeechFailures = 0;
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static const int _maxFailuresBeforeSwitch = 2;
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/// Initialiser le service
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static Future<void> initialize() async {
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if (_initialized) return;
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try {
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DebugLog.info('[SmartTTS] Initializing...');
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// Initialiser Web Speech API
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await TextToSpeechService.initialize();
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// Pré-charger les phrases courantes pour Cloud TTS en arrière-plan
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// (ne bloque pas l'initialisation)
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Future.delayed(const Duration(seconds: 2), () {
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CloudTextToSpeechService.preloadCommonPhrases();
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});
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_initialized = true;
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DebugLog.info('[SmartTTS] ✓ Initialized (Web Speech preferred)');
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} catch (e) {
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DebugLog.error('[SmartTTS] Initialization error', e);
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_initialized = true; // Continuer quand même
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}
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}
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/// Lire un texte à haute voix avec stratégie intelligente
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static Future<void> speak(String text) async {
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if (!_initialized) {
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await initialize();
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}
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// Si Web Speech a échoué plusieurs fois, utiliser directement Cloud TTS
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if (!_webSpeechWorks || _webSpeechFailures >= _maxFailuresBeforeSwitch) {
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return _speakWithCloudTTS(text);
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}
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// Essayer Web Speech d'abord
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try {
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await _speakWithWebSpeech(text);
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// Si succès, réinitialiser le compteur d'échecs
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_webSpeechFailures = 0;
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} catch (e) {
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DebugLog.warning('[SmartTTS] Web Speech failed ($e), trying Cloud TTS...');
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_webSpeechFailures++;
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// Si trop d'échecs, basculer vers Cloud TTS par défaut
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if (_webSpeechFailures >= _maxFailuresBeforeSwitch) {
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DebugLog.info('[SmartTTS] Switching to Cloud TTS as primary');
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_webSpeechWorks = false;
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}
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// Fallback vers Cloud TTS
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await _speakWithCloudTTS(text);
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}
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}
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/// Utiliser Web Speech API
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static Future<void> _speakWithWebSpeech(String text) async {
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DebugLog.info('[SmartTTS] → Trying Web Speech API');
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// Timeout pour détecter si ça ne marche pas
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await Future.any([
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TextToSpeechService.speak(text),
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Future.delayed(const Duration(seconds: 3), () {
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throw Exception('Web Speech timeout');
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}),
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]);
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DebugLog.info('[SmartTTS] ✓ Web Speech succeeded');
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}
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/// Utiliser Cloud TTS
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static Future<void> _speakWithCloudTTS(String text) async {
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DebugLog.info('[SmartTTS] → Using Cloud TTS');
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try {
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await CloudTextToSpeechService.speak(text);
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DebugLog.info('[SmartTTS] ✓ Cloud TTS succeeded');
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} catch (e) {
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DebugLog.error('[SmartTTS] ✗ Cloud TTS failed', e);
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// En dernier recours, réessayer Web Speech
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if (!_webSpeechWorks) {
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DebugLog.info('[SmartTTS] Last resort: trying Web Speech again');
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await TextToSpeechService.speak(text);
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} else {
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rethrow;
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}
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}
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}
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/// Arrêter toute lecture en cours
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static Future<void> stop() async {
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try {
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await TextToSpeechService.stop();
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CloudTextToSpeechService.stopAll();
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} catch (e) {
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DebugLog.error('[SmartTTS] Error stopping', e);
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}
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}
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/// Vérifier si une lecture est en cours
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static Future<bool> isSpeaking() async {
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try {
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return await TextToSpeechService.isSpeaking();
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} catch (e) {
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return false;
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}
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}
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/// Forcer l'utilisation de Cloud TTS (pour tests ou préférence utilisateur)
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static void forceCloudTTS() {
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DebugLog.info('[SmartTTS] Forced to use Cloud TTS');
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_webSpeechWorks = false;
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_webSpeechFailures = _maxFailuresBeforeSwitch;
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}
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/// Forcer l'utilisation de Web Speech (pour tests ou préférence utilisateur)
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static void forceWebSpeech() {
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DebugLog.info('[SmartTTS] Forced to use Web Speech');
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_webSpeechWorks = true;
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_webSpeechFailures = 0;
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}
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/// Réinitialiser la stratégie (utile pour tests)
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static void resetStrategy() {
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DebugLog.info('[SmartTTS] Strategy reset');
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_webSpeechWorks = true;
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_webSpeechFailures = 0;
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}
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/// Obtenir le statut actuel
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static Map<String, dynamic> getStatus() {
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return {
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'initialized': _initialized,
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'webSpeechWorks': _webSpeechWorks,
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'failures': _webSpeechFailures,
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'currentStrategy': _webSpeechWorks ? 'Web Speech (primary)' : 'Cloud TTS (primary)',
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};
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}
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/// Nettoyer les ressources
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static Future<void> dispose() async {
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try {
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await TextToSpeechService.dispose();
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CloudTextToSpeechService.clearCache();
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} catch (e) {
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DebugLog.error('[SmartTTS] Error disposing', e);
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}
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}
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}
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