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323 lines
12 KiB
323 lines
12 KiB
import 'dart:async';
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import 'package:agent_service/agent_service.dart';
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import 'package:chat_storage/chat_storage.dart';
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import 'package:flutter/widgets.dart';
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import 'package:get/get.dart';
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import 'package:permission_handler/permission_handler.dart';
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import '../../../data/models/appconfig.dart';
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import '../../../core/utils/logger.dart';
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import '../../../core/utils/permission_util.dart';
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enum MobileElfStatus { idle, connecting, recording, thinking, speaking, error }
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class MobileElfMessage {
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final bool isUser;
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final String text;
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final DateTime time;
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MobileElfMessage(
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{required this.isUser, required this.text, required this.time});
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}
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class MobileElfController extends GetxController {
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static const _tag = 'MobileElfCtrl';
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// ── 可观察状态 ─────────────────────────────────────────────────────────────
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final status = MobileElfStatus.idle.obs;
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final messages = <MobileElfMessage>[].obs;
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final realtimeText = ''.obs;
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final errorMsg = ''.obs;
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final inCall = false.obs;
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final callSeconds = 0.obs;
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final recordingSeconds = 0.obs;
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final micRms = 0.0.obs;
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final micAlive = false.obs;
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final pttRecording = false.obs;
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final pttSeconds = 0.obs;
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final ttsEnabled = true.obs; // 是否播报 AI 回复
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final ScrollController scrollController = ScrollController();
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// 凭证状态（原生层负责，Dart 层始终无错）
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final credentialReady = true.obs;
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final credentialError = ''.obs;
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// ── 内部 ───────────────────────────────────────────────────────────────────
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StreamSubscription<AgentServiceEvent>? _eventSub;
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Timer? _callTimer;
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Timer? _pttTimer;
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bool _inCallMode = false;
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bool _callStarting = false; // 防止并发 startCall
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// ═══════════════════════════════════════════════════════════════════════════
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// 生命周期
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// ═══════════════════════════════════════════════════════════════════════════
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String get _agentId => AppConfig.env('MOBILE_ELF_AGENT_ID') ?? 'mobile_elf';
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@override
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void onInit() {
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super.onInit();
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_subscribeEvents();
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_loadChatHistory();
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// 同步播报开关到原生层
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ever(ttsEnabled, (bool enabled) {
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AgentService.setTtsMuted(!enabled);
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});
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}
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Future<void> _loadChatHistory() async {
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try {
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final result = await ChatStorage.getMessages(
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agentId: _agentId,
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page: 1,
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pageSize: 50,
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);
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if (result.messages.isNotEmpty) {
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final history = result.messages.map((m) => MobileElfMessage(
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isUser: m.sender == 'user',
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text: m.message,
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time: DateTime.tryParse(m.timestamp) ?? DateTime.now(),
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)).toList();
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// 按时间正序排列
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history.sort((a, b) => a.time.compareTo(b.time));
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messages.addAll(history);
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_scrollToBottom();
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}
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} catch (e) {
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Logger.error('$_tag 加载聊天记录失败: $e');
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}
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}
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@override
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void onClose() {
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_eventSub?.cancel();
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_callTimer?.cancel();
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_pttTimer?.cancel();
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AgentService.stopConversation();
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scrollController.dispose();
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super.onClose();
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}
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// ═══════════════════════════════════════════════════════════════════════════
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// 事件订阅（来自原生 StsAgent）
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// ═══════════════════════════════════════════════════════════════════════════
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void _subscribeEvents() {
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_eventSub = AgentService.events.listen(_onAgentEvent);
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}
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void _onAgentEvent(AgentServiceEvent event) {
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Logger.info('$_tag event: ${event.type} data: ${event.data}');
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// 已挂断/停止时忽略原生层残留的状态事件
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final sessionActive = _inCallMode || pttRecording.value;
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switch (event.type) {
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case AgentServiceEventType.recognitionStarted:
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if (!sessionActive) break;
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status.value = MobileElfStatus.recording;
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realtimeText.value = '';
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micAlive.value = true;
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break;
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case AgentServiceEventType.recognizing:
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if (!sessionActive) break;
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realtimeText.value = event.data['text']?.toString() ?? '';
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status.value = MobileElfStatus.recording;
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break;
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case AgentServiceEventType.recognitionResult:
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if (!sessionActive) break;
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final text = event.data['text']?.toString() ?? '';
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realtimeText.value = '';
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micAlive.value = false;
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if (text.isNotEmpty) _addMessage(isUser: true, text: text);
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status.value = MobileElfStatus.thinking;
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break;
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case AgentServiceEventType.recognitionStopped:
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case AgentServiceEventType.recognitionCanceled:
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if (!sessionActive) break;
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realtimeText.value = '';
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micAlive.value = false;
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break;
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case AgentServiceEventType.assistantResponse:
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if (!sessionActive) break;
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final text = event.data['response']?.toString() ?? '';
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if (text.isNotEmpty) _updateOrAddAssistantMessage(text);
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if (!ttsEnabled.value) {
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status.value =
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_inCallMode ? MobileElfStatus.recording : MobileElfStatus.idle;
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micAlive.value = _inCallMode;
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}
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break;
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case AgentServiceEventType.ttsStarted:
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if (!sessionActive) break;
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status.value = MobileElfStatus.speaking;
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break;
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case AgentServiceEventType.ttsCompleted:
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if (!sessionActive) break;
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if (_inCallMode) {
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status.value = MobileElfStatus.recording;
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micAlive.value = true;
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} else {
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status.value = MobileElfStatus.idle;
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micAlive.value = false;
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}
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break;
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case AgentServiceEventType.ttsCanceled:
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case AgentServiceEventType.ttsStopped:
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if (!sessionActive) break;
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status.value = _inCallMode ? MobileElfStatus.recording : MobileElfStatus.idle;
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micAlive.value = _inCallMode;
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break;
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case AgentServiceEventType.error:
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if (!sessionActive) break;
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final msg = event.data['message']?.toString() ?? '未知错误';
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status.value = MobileElfStatus.error;
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errorMsg.value = msg;
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Logger.error('$_tag error: $msg');
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break;
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case AgentServiceEventType.micRms:
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final rms = (event.data['rms'] as num?)?.toDouble() ?? 0.0;
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micRms.value = rms;
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break;
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default:
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break;
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}
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_scrollToBottom();
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}
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// ═══════════════════════════════════════════════════════════════════════════
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// 公共接口（View 调用）
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// ═══════════════════════════════════════════════════════════════════════════
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Future<void> startCall() async {
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if (inCall.value || _callStarting) return;
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_callStarting = true;
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try {
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final granted = await PermissionUtil.instance.requestPermission(
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permissionType: Permission.microphone,
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permissionName: '麦克风',
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explanationText: '移动精灵需要麦克风权限才能进行语音对话',
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permanentDenialText: '请在设置中开启麦克风权限以使用语音功能',
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);
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if (!granted || inCall.value) return; // 权限等待期间可能已被挂断或重复调用
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_inCallMode = true;
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inCall.value = true;
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callSeconds.value = 0;
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micAlive.value = true;
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status.value = MobileElfStatus.connecting;
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_callTimer?.cancel();
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_callTimer = Timer.periodic(
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const Duration(seconds: 1), (_) => callSeconds.value++);
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await AgentService.startConversation(mode: 'phone_call');
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} finally {
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_callStarting = false;
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}
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}
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Future<void> disconnect() async {
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_callStarting = false;
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_inCallMode = false;
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inCall.value = false;
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_callTimer?.cancel();
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_callTimer = null;
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callSeconds.value = 0;
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pttRecording.value = false;
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_pttTimer?.cancel();
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_pttTimer = null;
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status.value = MobileElfStatus.idle;
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micAlive.value = false;
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realtimeText.value = '';
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await AgentService.stopConversation();
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}
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Future<void> startPtt() async {
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if (pttRecording.value) return;
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final granted = await PermissionUtil.instance.requestPermission(
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permissionType: Permission.microphone,
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permissionName: '麦克风',
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explanationText: '移动精灵需要麦克风权限才能进行语音对话',
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permanentDenialText: '请在设置中开启麦克风权限以使用语音功能',
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);
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if (!granted) return;
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pttRecording.value = true;
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pttSeconds.value = 0;
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status.value = MobileElfStatus.connecting;
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_pttTimer?.cancel();
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_pttTimer = Timer.periodic(
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const Duration(seconds: 1), (_) => pttSeconds.value++);
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AgentService.startConversation(mode: 'push_to_talk');
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}
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void stopPtt() {
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if (!pttRecording.value) return;
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pttRecording.value = false;
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_pttTimer?.cancel();
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_pttTimer = null;
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AgentService.stopConversation();
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}
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void interruptSpeaking() {
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AgentService.interruptCurrentResponse();
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status.value =
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_inCallMode ? MobileElfStatus.recording : MobileElfStatus.idle;
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micAlive.value = _inCallMode;
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}
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/// 原生层已自动获取凭证，此处保留方法供 View 调用不报错
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Future<void> retryCredentials() async {
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credentialError.value = '';
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}
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/// 清空聊天记录
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Future<void> clearMessages() async {
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messages.clear();
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try {
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await AgentService.clearChatHistory();
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} catch (e) {
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Logger.error('$_tag 清空聊天记录失败: $e');
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}
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}
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// ═══════════════════════════════════════════════════════════════════════════
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// 工具
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// ═══════════════════════════════════════════════════════════════════════════
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void _addMessage({required bool isUser, required String text}) {
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messages.add(MobileElfMessage(
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isUser: isUser, text: text, time: DateTime.now()));
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_scrollToBottom();
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}
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/// 更新最后一条 AI 消息（如果存在且更短），否则添加新消息
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void _updateOrAddAssistantMessage(String text) {
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final lastIdx = messages.length - 1;
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if (lastIdx >= 0 && !messages[lastIdx].isUser) {
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// 用更完整的文本替换
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messages[lastIdx] = MobileElfMessage(
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isUser: false, text: text, time: messages[lastIdx].time);
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messages.refresh();
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} else {
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_addMessage(isUser: false, text: text);
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}
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_scrollToBottom();
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}
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void _scrollToBottom() {
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WidgetsBinding.instance.addPostFrameCallback((_) {
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if (scrollController.hasClients) {
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scrollController.animateTo(
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scrollController.position.maxScrollExtent,
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duration: const Duration(milliseconds: 300),
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curve: Curves.easeOut,
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);
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}
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});
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}
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}
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