mnemo_cards/lib/managers/audio_player.dart

import 'package:flutter_tts/flutter_tts.dart';

import '../main.dart';

class AudioPlayer {
  static bool get soundOn =>
      globalSharedPreferences.getBool('sound_on') ?? true;

  static Future<void> playAudio(String? audio, {String? lang}) async {
    if (soundOn && audio != null) {
      FlutterTts flutterTts = FlutterTts();
      var playText = audio;
      if (audio.contains('_')) {
        final language = audio.split('_').first;
        playText = audio.replaceFirst('${language}_', '');
        if (lang == null) {
          await flutterTts.setLanguage(language);
        }
      }
      if (lang != null) {
        await flutterTts.setLanguage(lang);
      }
      var speed = globalSharedPreferences.getDouble('sound_speed');
      if (speed == null) {
        speed = 0.8;
        globalSharedPreferences.setDouble('sound_speed', 0.8);
      }
      await flutterTts.setSpeechRate(speed);
      flutterTts.speak(playText);
    }
  }
}