7a93237069
- 后端: 新增 AttachmentContextBuilder 解析图片/PDF 摘要并拼入 LLM 上下文; ai_chat_endpoints 扩展附件接口; 新增 ReportAnalysisService - 前端: 新增历史会话页与 conversation_history_provider; chat 链路支持附件展示与回放 - UI: 重构 medication_checkin / notification_center / profile / health_drawer 等多页面 - 配置: api_client baseUrl 适配当前 WiFi IP
86 lines
2.7 KiB
Dart
86 lines
2.7 KiB
Dart
import 'package:flutter_riverpod/flutter_riverpod.dart';
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import '../providers/auth_provider.dart';
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import '../providers/chat_provider.dart';
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/// 对话历史列表项
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class ConversationListItem {
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final String id;
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final String? title;
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final String? summary;
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final int messageCount;
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final DateTime updatedAt;
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const ConversationListItem({
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required this.id,
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this.title,
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this.summary,
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required this.messageCount,
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required this.updatedAt,
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});
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factory ConversationListItem.fromJson(Map<String, dynamic> json) =>
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ConversationListItem(
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id: json['id']?.toString() ?? '',
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title: json['title']?.toString(),
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summary: json['summary']?.toString(),
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messageCount: (json['messageCount'] as num?)?.toInt() ?? 0,
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updatedAt: DateTime.tryParse(json['updatedAt']?.toString() ?? '') ??
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DateTime.now(),
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);
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}
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/// 对话历史 Notifier：缓存列表，提供刷新/删除/清空。
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class ConversationHistoryNotifier
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extends AsyncNotifier<List<ConversationListItem>> {
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@override
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Future<List<ConversationListItem>> build() => _fetch();
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Future<List<ConversationListItem>> _fetch() async {
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final api = ref.read(apiClientProvider);
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final res = await api.get('/api/ai/conversations');
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final raw = (res.data['data'] as List?) ?? const [];
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return raw
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.whereType<Map>()
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.map((m) => ConversationListItem.fromJson(Map<String, dynamic>.from(m)))
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.toList();
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}
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Future<void> refresh() async {
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state = const AsyncValue.loading();
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state = await AsyncValue.guard(_fetch);
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}
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/// 删除单条；先乐观更新 UI，失败回滚。
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Future<void> deleteOne(String id) async {
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final previous = state.asData?.value ?? const <ConversationListItem>[];
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state = AsyncValue.data(previous.where((e) => e.id != id).toList());
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try {
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final api = ref.read(apiClientProvider);
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await api.delete('/api/ai/conversations/$id');
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} catch (_) {
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state = AsyncValue.data(previous);
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rethrow;
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}
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// 同步清掉当前 chat state（如果删的就是当前会话）
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final chat = ref.read(chatProvider);
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if (chat.conversationId == id) {
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ref.read(chatProvider.notifier).resetSession();
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}
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}
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/// 一键清空当前用户的全部对话。
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Future<int> clearAll() async {
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final api = ref.read(apiClientProvider);
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final res = await api.delete('/api/ai/conversations');
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state = const AsyncValue.data([]);
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ref.read(chatProvider.notifier).resetSession();
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final deleted = res.data['data']?['deleted'];
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return deleted is num ? deleted.toInt() : 0;
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}
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}
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final conversationHistoryProvider = AsyncNotifierProvider<
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ConversationHistoryNotifier, List<ConversationListItem>>(
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ConversationHistoryNotifier.new,
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);
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