feat(chat): 增加会话目录支持并优化消息处理

- 在创建会话时添加目录参数支持
- 优化消息模型处理，支持从摘要合成文本内容
- 增加API请求超时时间以避免大消息中断
- 修复项目ID同步问题，确保始终使用最新项目ID
- 避免向后端发送空字段以节省带宽
- 更新应用版本号至1.0.1+2

Author: easychen

lib/data/datasources/chat_remote_datasource.dart

@@ -295,11 +295,25 @@ class ChatRemoteDataSourceImpl implements ChatRemoteDataSource {
       final response = await dio.get(
         '/session/$sessionId/message',
         queryParameters: queryParams.isNotEmpty ? queryParams : null,
+        options: Options(
+          // 会话历史可能较大，提升接收超时以避免 60 秒中断
+          receiveTimeout: const Duration(minutes: 3),
+        ),
       );
 
       if (response.statusCode == 200) {
         final List<dynamic> data = response.data;
-        return data.map((json) => ChatMessageModel.fromJson(json)).toList();
+        // Each item follows { info: MessageObject, parts: Part[] }
+        // Flatten to a single map compatible with ChatMessageModel.fromJson
+        return data.map((item) {
+          final map = item as Map<String, dynamic>;
+          final info = (map['info'] as Map<String, dynamic>?) ?? <String, dynamic>{};
+          final parts = (map['parts'] as List<dynamic>?) ?? <dynamic>[];
+          return ChatMessageModel.fromJson({
+            ...info,
+            'parts': parts,
+          });
+        }).toList();
       } else {
         throw const ServerException('服务器错误');
       }
@@ -324,6 +338,10 @@ class ChatRemoteDataSourceImpl implements ChatRemoteDataSource {
       final response = await dio.get(
         '/session/$sessionId/message/$messageId',
         queryParameters: queryParams.isNotEmpty ? queryParams : null,
+        options: Options(
+          // 单条消息也可能较慢，统一提升接收超时
+          receiveTimeout: const Duration(minutes: 3),
+        ),
       );
 
       if (response.statusCode == 200) {

lib/data/models/chat_message_model.dart

@@ -102,13 +102,52 @@ class ChatMessageModel {
     // Manually handle completedTime
     final completedTime = _completedTimeFromJson(json['time']);
 
+    // Prepare parts and synthesize text from summary if needed
+    final List<MessagePartModel> computedParts = List<MessagePartModel>.from(model.parts);
+
+    // For UserMessage: server may provide `summary` object without `parts`
+    // We synthesize a text part so UI can display meaningful content.
+    final dynamic summary = json['summary'];
+    if (computedParts.isEmpty && summary is Map<String, dynamic>) {
+      final title = (summary['title'] as String?)?.trim();
+      final body = (summary['body'] as String?)?.trim();
+      final diffs = summary['diffs'] as List<dynamic>?;
+
+      final buffer = StringBuffer();
+      if (title != null && title.isNotEmpty) buffer.writeln(title);
+      if (body != null && body.isNotEmpty) buffer.writeln(body);
+      if (diffs != null && diffs.isNotEmpty) {
+        for (final d in diffs) {
+          if (d is Map<String, dynamic>) {
+            final file = (d['file'] as String?) ?? '';
+            final after = (d['after'] as String?) ?? '';
+            if (file.isNotEmpty) buffer.writeln('File: $file');
+            if (after.isNotEmpty) buffer.writeln(after);
+          }
+        }
+      }
+
+      final synthesizedText = buffer.toString().trim();
+      if (synthesizedText.isNotEmpty) {
+        computedParts.add(
+          MessagePartModel(
+            id: 'prt_${DateTime.now().millisecondsSinceEpoch}_summary',
+            messageId: model.id,
+            sessionId: model.sessionId,
+            type: 'text',
+            text: synthesizedText,
+          ),
+        );
+      }
+    }
+
     return ChatMessageModel(
       id: model.id,
       sessionId: model.sessionId,
       role: model.role,
       time: model.time,
       completedTime: completedTime,
-      parts: model.parts,
+      parts: computedParts,
       providerId: model.providerId,
       modelId: model.modelId,
       cost: model.cost,

lib/data/models/chat_session_model.dart

@@ -248,7 +248,17 @@ class SessionCreateInputModel {
   factory SessionCreateInputModel.fromJson(Map<String, dynamic> json) =>
       _$SessionCreateInputModelFromJson(json);
 
-  Map<String, dynamic> toJson() => _$SessionCreateInputModelToJson(this);
+  // 手动实现 toJson 以避免向后端发送 null 字段
+  Map<String, dynamic> toJson() {
+    final map = <String, dynamic>{};
+    if (parentId != null) {
+      map['parentID'] = parentId;
+    }
+    if (title != null) {
+      map['title'] = title;
+    }
+    return map;
+  }
 
   static SessionCreateInputModel fromDomain(SessionCreateInput input) {
     return SessionCreateInputModel(
@@ -268,7 +278,14 @@ class SessionUpdateInputModel {
   factory SessionUpdateInputModel.fromJson(Map<String, dynamic> json) =>
       _$SessionUpdateInputModelFromJson(json);
 
-  Map<String, dynamic> toJson() => _$SessionUpdateInputModelToJson(this);
+  // 同样避免发送空字段
+  Map<String, dynamic> toJson() {
+    final map = <String, dynamic>{};
+    if (title != null) {
+      map['title'] = title;
+    }
+    return map;
+  }
 
   static SessionUpdateInputModel fromDomain(SessionUpdateInput input) {
     return SessionUpdateInputModel(title: input.title);

lib/domain/usecases/create_chat_session.dart

@@ -13,7 +13,11 @@ class CreateChatSession {
   Future<Either<Failure, ChatSession>> call(
     CreateChatSessionParams params,
   ) async {
-    return repository.createSession(params.projectId, params.input);
+    return repository.createSession(
+      params.projectId,
+      params.input,
+      directory: params.directory,
+    );
   }
 }
 
@@ -22,8 +26,10 @@ class CreateChatSessionParams {
   const CreateChatSessionParams({
     required this.projectId,
     required this.input,
+    this.directory,
   });
 
   final String projectId;
   final SessionCreateInput input;
+  final String? directory;
 }

lib/presentation/providers/chat_provider.dart

@@ -232,6 +232,7 @@ class ChatProvider extends ChangeNotifier {
   /// 创建新会话
   Future<void> createNewSession({String? parentId, String? title}) async {
     final projectId = projectProvider.currentProjectId;
+    final directory = projectProvider.currentProject?.path;
     _setState(ChatState.loading);
 
     // 生成基于时间的标题
@@ -245,6 +246,7 @@ class ChatProvider extends ChangeNotifier {
           parentId: parentId,
           title: defaultTitle,
         ),
+        directory: directory,
       ),
     );
 
@@ -300,13 +302,14 @@ class ChatProvider extends ChangeNotifier {
 
   /// 加载消息列表
   Future<void> loadMessages(String sessionId) async {
-    if (_currentProjectId == null) return; // 确保有项目ID
-    
+    // 同步项目ID（根据 ProjectProvider），新接口对 projectId 非必需
+    _currentProjectId = projectProvider.currentProjectId;
+
     _setState(ChatState.loading);
 
     final result = await getChatMessages(
       GetChatMessagesParams(
-        projectId: _currentProjectId!,
+        projectId: projectProvider.currentProjectId,
         sessionId: sessionId,
       ),
     );
@@ -323,6 +326,9 @@ class ChatProvider extends ChangeNotifier {
 
     _setState(ChatState.sending);
 
+    // 同步项目ID（根据 ProjectProvider）
+    _currentProjectId = projectProvider.currentProjectId;
+
     // 生成消息 ID
     final messageId = 'msg_${DateTime.now().millisecondsSinceEpoch}';
 
@@ -368,7 +374,7 @@ class ChatProvider extends ChangeNotifier {
     _messageSubscription =
         sendChatMessage(
           SendChatMessageParams(
-            projectId: _currentProjectId!,
+            projectId: projectProvider.currentProjectId,
             sessionId: _currentSession!.id, 
             input: input,
           ),
@@ -447,11 +453,12 @@ class ChatProvider extends ChangeNotifier {
 
   /// 删除会话
   Future<void> deleteSession(String sessionId) async {
-    if (_currentProjectId == null) return; // 确保有项目ID
-    
+    // 同步项目ID（根据 ProjectProvider）
+    _currentProjectId = projectProvider.currentProjectId;
+
     final result = await deleteChatSession(
       DeleteChatSessionParams(
-        projectId: _currentProjectId!,
+        projectId: projectProvider.currentProjectId,
         sessionId: sessionId,
       ),
     );

pubspec.yaml

@@ -16,7 +16,7 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 # In Windows, build-name is used as the major, minor, and patch parts
 # of the product and file versions while build-number is used as the build suffix.
-version: 1.0.0+1
+version: 1.0.1+2
 
 environment:
   sdk: ^3.8.1