wolfplus
2 years ago
14 changed files with 695 additions and 277 deletions
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import 'package:get/get.dart'; |
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import 'dart:async'; |
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import 'volcano_ai_service.dart'; |
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import 'volcano_tts_service.dart'; |
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import '../../modules/chat/models/message_model.dart'; |
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|
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class BackgroundAgentService extends GetxService { |
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static BackgroundAgentService get to => Get.find(); |
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|
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final VolcanoAIService _aiService; |
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final VolcanoTtsService _ttsService; |
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final List<Message> _messageHistory = []; |
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String _pendingTtsText = ''; |
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static const int _minTtsLength = 20; |
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bool _isProcessing = false; |
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|
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BackgroundAgentService() |
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: _aiService = VolcanoAIService(), |
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_ttsService = Get.find<VolcanoTtsService>(); |
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|
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Future<void> handleAgentInteraction(String systemPrompt) async { |
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if (_isProcessing) return; |
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_isProcessing = true; |
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|
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try { |
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// 构建用于生成回应的消息列表 |
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final messages = [ |
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{'role': 'system', 'content': systemPrompt}, |
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{'role': 'user', 'content': '请用一句简短的话回应我，要体现你的特点，不要超过12个字。'}, |
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]; |
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|
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String fullResponse = ''; |
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await for (final chunk in _aiService.sendMessageStream( |
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messages: messages, |
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systemPrompt: systemPrompt, |
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)) { |
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fullResponse += chunk; |
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|
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// 累积文本并处理TTS |
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_pendingTtsText += chunk; |
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if (_ttsService.isEnabled.value) { |
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if (_pendingTtsText.length >= _minTtsLength) { |
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int lastSentenceEnd = _findLastSentenceEnd(_pendingTtsText); |
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if (lastSentenceEnd > 0) { |
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String textToSpeak = _pendingTtsText.substring(0, lastSentenceEnd + 1); |
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await _ttsService.speak(textToSpeak); |
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_pendingTtsText = _pendingTtsText.substring(lastSentenceEnd + 1); |
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} |
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} |
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} |
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} |
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|
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// 处理剩余的文本 |
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if (_ttsService.isEnabled.value && _pendingTtsText.isNotEmpty) { |
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await _ttsService.speak(_pendingTtsText); |
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} |
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_pendingTtsText = ''; |
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|
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// 保存对话历史 |
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_messageHistory.add(Message( |
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role: 'assistant', |
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content: fullResponse, |
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timestamp: DateTime.now(), |
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)); |
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|
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// 限制历史记录长度 |
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if (_messageHistory.length > 10) { |
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_messageHistory.removeAt(0); |
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} |
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} catch (e) { |
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print('Background agent interaction failed: $e'); |
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} finally { |
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_isProcessing = false; |
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} |
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} |
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|
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int _findLastSentenceEnd(String text) { |
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final sentenceEnds = [ |
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text.lastIndexOf('。'), |
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text.lastIndexOf('！'), |
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text.lastIndexOf('？'), |
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text.lastIndexOf('.'), |
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text.lastIndexOf('!'), |
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text.lastIndexOf('?'), |
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]; |
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return sentenceEnds.reduce((max, pos) => pos > max ? pos : max); |
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} |
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List<Message> get messageHistory => List.unmodifiable(_messageHistory); |
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void clearHistory() { |
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_messageHistory.clear(); |
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} |
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} |
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@ -0,0 +1,147 @@ |
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import 'dart:io'; |
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import 'package:get/get.dart'; |
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import 'package:flutter_local_notifications/flutter_local_notifications.dart'; |
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import 'package:device_info_plus/device_info_plus.dart'; |
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import 'package:permission_handler/permission_handler.dart'; |
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import '../providers/agent_provider.dart'; |
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class NotificationService extends GetxService { |
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static NotificationService get to => Get.find(); |
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final FlutterLocalNotificationsPlugin _notificationsPlugin = FlutterLocalNotificationsPlugin(); |
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bool _notificationActive = false; |
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bool _isRequestingPermission = false; |
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String get _defaultAgentName { |
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final agent = AgentProvider.getAgentById('personal_assistant'); |
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return agent?.name ?? 'Deep Voice'; |
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} |
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Future<void> init() async { |
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const androidSettings = AndroidInitializationSettings('@mipmap/ic_launcher'); |
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const iosSettings = DarwinInitializationSettings( |
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requestAlertPermission: false, // 初始化时不请求权限 |
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requestBadgePermission: false, |
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requestSoundPermission: false, |
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); |
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const initSettings = InitializationSettings( |
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android: androidSettings, |
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iOS: iosSettings, |
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); |
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await _notificationsPlugin.initialize( |
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initSettings, |
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onDidReceiveNotificationResponse: (details) { |
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if (Get.currentRoute != '/chat') { |
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Get.toNamed('/chat'); |
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} |
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}, |
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); |
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|
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// 创建通知渠道 |
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if (Platform.isAndroid) { |
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await _notificationsPlugin.resolvePlatformSpecificImplementation< |
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AndroidFlutterLocalNotificationsPlugin>()?.createNotificationChannel( |
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const AndroidNotificationChannel( |
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'foreground_service', // id |
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'Foreground Service', // name |
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description: 'Used for the foreground service notification', // description |
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importance: Importance.min, |
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playSound: false, |
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enableVibration: false, |
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showBadge: false, |
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), |
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); |
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} |
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await _requestPermissionIfNeeded(); |
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// 在初始化完成后显示前台服务通知 |
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await showForegroundNotification(); |
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} |
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|
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Future<void> showForegroundNotification() async { |
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if (_notificationActive) return; |
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// 在显示通知前确保有权限 |
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await _requestPermissionIfNeeded(); |
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final androidDetails = AndroidNotificationDetails( |
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'foreground_service', |
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'Foreground Service', |
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channelDescription: 'Used for the foreground service notification', |
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importance: Importance.min, |
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priority: Priority.min, |
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ongoing: true, |
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autoCancel: false, |
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showWhen: false, |
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enableVibration: false, |
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playSound: false, |
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icon: '@mipmap/ic_launcher', |
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category: AndroidNotificationCategory.service, |
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actions: [ |
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const AndroidNotificationAction( |
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'chat', |
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'开始对话', |
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showsUserInterface: true, |
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), |
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], |
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); |
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const iosDetails = DarwinNotificationDetails( |
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presentAlert: false, |
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presentBadge: false, |
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presentSound: false, |
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interruptionLevel: InterruptionLevel.passive, |
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); |
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final notificationDetails = NotificationDetails( |
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android: androidDetails, |
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iOS: iosDetails, |
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); |
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await _notificationsPlugin.show( |
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0, |
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_defaultAgentName, |
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'点击开始对话', |
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notificationDetails, |
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); |
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_notificationActive = true; |
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} |
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Future<void> cancelNotification() async { |
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if (!_notificationActive) return; |
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await _notificationsPlugin.cancel(0); |
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_notificationActive = false; |
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} |
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|
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Future<void> _requestPermissionIfNeeded() async { |
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if (_isRequestingPermission) return; |
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_isRequestingPermission = true; |
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|
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try { |
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if (Platform.isAndroid) { |
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final androidInfo = await DeviceInfoPlugin().androidInfo; |
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if (androidInfo.version.sdkInt >= 33) { |
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final status = await Permission.notification.status; |
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if (status.isDenied) { |
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await Permission.notification.request(); |
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} |
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} |
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} else if (Platform.isIOS) { |
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await _notificationsPlugin |
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.resolvePlatformSpecificImplementation< |
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IOSFlutterLocalNotificationsPlugin>() |
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?.requestPermissions( |
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alert: true, |
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badge: true, |
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sound: true, |
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); |
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} |
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} finally { |
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_isRequestingPermission = false; |
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} |
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} |
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} |
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@ -1,25 +1,9 @@ |
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import 'package:get/get.dart'; |
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import '../controllers/chat_controller.dart'; |
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|
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class ChatBinding extends Bindings { |
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class ChatBinding implements Bindings { |
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@override |
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void dependencies() { |
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// 获取传递的参数 |
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final arguments = Get.arguments; |
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if (arguments == null || !(arguments is Map<String, dynamic>)) { |
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print('Chat binding: 未提供有效的参数'); |
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Get.back(); |
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return; |
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} |
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// 创建并注入控制器 |
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Get.put(ChatController( |
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agentId: arguments['agentId'], |
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agentName: arguments['agentName'], |
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agentAvatar: arguments['agentAvatar'], |
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agentSubtitle: arguments['agentSubtitle'], |
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systemPrompt: arguments['systemPrompt'], |
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welcomeMessage: arguments['welcomeMessage'], |
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)); |
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Get.put(ChatController()); |
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} |
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} |
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