feat: 添加唤醒功能

lib/manager.dart

@@ -3,6 +3,7 @@ import 'dart:io';
 
 import 'package:flutter/services.dart';
 import 'package:flutter/widgets.dart';
+import 'package:flutter_vosk_wakeword/flutter_vosk_wakeword.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:porcupine_flutter/porcupine_error.dart';
 import 'package:porcupine_flutter/porcupine_manager.dart';
@@ -86,6 +87,36 @@ class AIChatAssistantManager {
     return file.path;
   }
 
+  Future<void> startVoskWakeword() async {
+    FlutterVoskWakeword.instance.initialize(
+      wakeWords: ['你好众众', '你好', '众众'], // 唤醒词列表
+    );
+
+    debugPrint('Starting Vosk Wakeword detection...');
+    FlutterVoskWakeword.instance.start();
+
+    FlutterVoskWakeword.instance.recognitionStream.listen((event) {
+      debugPrint('Vosk Wakeword detected: ${event.text}');
+      _wakeWordDetected = true;
+      // 通知所有监听者
+      // _wakeWordController.add(null);
+
+      // 可选：一段时间后自动重置状态
+      Future.delayed(const Duration(seconds: 2), () {
+        _wakeWordDetected = false;
+      });
+    });
+  }
+
+  Future<void> stopVoskWakeword() async {
+    if (_wakeWordDetected) {
+      _wakeWordDetected = false;
+    }
+    if (FlutterVoskWakeword.instance != null) {
+      FlutterVoskWakeword.instance.stop();
+    }
+  }
+
   /// 开启或关闭唤醒词检测
   Future<void> setWakeWordDetection(bool enable) async {
     if (enable == _isWakeWordEnabled && _porcupineManager != null) {
@@ -148,5 +179,7 @@ class AIChatAssistantManager {
     _commandCubit = null;
     _wakeWordController.close();
     setWakeWordDetection(false); // 确保 Porcupine 停止并释放
+    FlutterVoskWakeword.instance.dispose();
+    debugPrint('AIChatAssistant 单例销毁');
   }
 }