feat: 重构项目结构以支持多项目管理

- 添加项目实体和仓库接口
- 实现项目远程数据源和本地存储
- 重构聊天相关接口以支持项目ID参数
- 更新API端点路径和常量
- 添加项目提供者管理当前项目状态
- 修改会话创建和消息发送逻辑以适配新API
- 实现会话缓存和恢复功能

Author: easychen

lib/core/constants/api_constants.dart

@@ -6,9 +6,9 @@ class ApiConstants {
   static const String defaultBaseUrl = 'http://$defaultHost:$defaultPort';
 
   // API端点
-  static const String appEndpoint = '/app';
+  static const String projectEndpoint = '/project';
+  static const String providerEndpoint = '/provider';
   static const String configEndpoint = '/config';
-  static const String configProvidersEndpoint = '/config/providers';
   static const String sessionEndpoint = '/session';
   static const String agentEndpoint = '/agent';
   static const String fileEndpoint = '/file';

lib/core/constants/app_constants.dart

@@ -15,6 +15,8 @@ class AppConstants {
   static const String selectedModelKey = 'selected_model';
   static const String themeKey = 'theme_mode';
   static const String lastSessionIdKey = 'last_session_id';
+  static const String cachedSessionsKey = 'cached_sessions';
+  static const String currentSessionIdKey = 'current_session_id';
 
   // Default configuration
   static const String defaultTheme = 'system';

lib/core/di/injection_container.dart

@@ -18,8 +18,12 @@ import '../../domain/usecases/delete_chat_session.dart';
 import '../../data/datasources/chat_remote_datasource.dart';
 import '../../data/repositories/chat_repository_impl.dart';
 import '../../domain/repositories/chat_repository.dart';
+import '../../data/datasources/project_remote_datasource.dart';
+import '../../data/repositories/project_repository_impl.dart';
+import '../../domain/repositories/project_repository.dart';
 import '../../presentation/providers/app_provider.dart';
 import '../../presentation/providers/chat_provider.dart';
+import '../../presentation/providers/project_provider.dart';
 
 final sl = GetIt.instance;
 
@@ -45,6 +49,10 @@ Future<void> init() async {
     () => ChatRemoteDataSourceImpl(dio: sl<DioClient>().dio),
   );
 
+  sl.registerLazySingleton<ProjectRemoteDataSource>(
+    () => ProjectRemoteDataSourceImpl(dio: sl<DioClient>().dio),
+  );
+
   // Repositories
   sl.registerLazySingleton<AppRepository>(
     () => AppRepositoryImpl(
@@ -58,6 +66,10 @@ Future<void> init() async {
     () => ChatRepositoryImpl(remoteDataSource: sl()),
   );
 
+  sl.registerLazySingleton<ProjectRepository>(
+    () => ProjectRepositoryImpl(remoteDataSource: sl()),
+  );
+
   // Use cases
   sl.registerLazySingleton(() => GetAppInfo(sl()));
   sl.registerLazySingleton(() => CheckConnection(sl()));
@@ -86,9 +98,15 @@ Future<void> init() async {
       getChatMessages: sl(),
       getProviders: sl(),
       deleteChatSession: sl(),
+      projectProvider: sl(),
+      localDataSource: sl(),
     ),
   );
 
+  sl.registerFactory(
+    () => ProjectProvider(projectRepository: sl()),
+  );
+
   // Load local configuration
   await _loadLocalConfig();
 }

lib/data/datasources/app_local_datasource.dart

@@ -45,6 +45,18 @@ abstract class AppLocalDataSource {
   /// 保存最后的会话ID
   Future<void> saveLastSessionId(String sessionId);
 
+  /// 获取当前会话ID
+  Future<String?> getCurrentSessionId();
+
+  /// 保存当前会话ID
+  Future<void> saveCurrentSessionId(String sessionId);
+
+  /// 获取缓存的会话列表
+  Future<String?> getCachedSessions();
+
+  /// 保存会话列表到缓存
+  Future<void> saveCachedSessions(String sessionsJson);
+
   /// 清除所有数据
   Future<void> clearAll();
 }
@@ -128,6 +140,26 @@ class AppLocalDataSourceImpl implements AppLocalDataSource {
     await sharedPreferences.setString(AppConstants.lastSessionIdKey, sessionId);
   }
 
+  @override
+  Future<String?> getCurrentSessionId() async {
+    return sharedPreferences.getString(AppConstants.currentSessionIdKey);
+  }
+
+  @override
+  Future<void> saveCurrentSessionId(String sessionId) async {
+    await sharedPreferences.setString(AppConstants.currentSessionIdKey, sessionId);
+  }
+
+  @override
+  Future<String?> getCachedSessions() async {
+    return sharedPreferences.getString(AppConstants.cachedSessionsKey);
+  }
+
+  @override
+  Future<void> saveCachedSessions(String sessionsJson) async {
+    await sharedPreferences.setString(AppConstants.cachedSessionsKey, sessionsJson);
+  }
+
   @override
   Future<void> clearAll() async {
     await sharedPreferences.clear();

lib/data/datasources/app_remote_datasource.dart

@@ -1,16 +1,19 @@
-import '../models/app_info_model.dart';
 import '../models/provider_model.dart';
+import '../models/app_info_model.dart';
 
 /// 应用远程数据源接口
 abstract class AppRemoteDataSource {
   /// 获取应用信息
-  Future<AppInfoModel> getAppInfo();
+  Future<AppInfoModel> getAppInfo({String? directory});
 
   /// 初始化应用
-  Future<bool> initializeApp();
+  Future<bool> initializeApp({String? directory});
 
   /// 获取提供商信息
-  Future<ProvidersResponseModel> getProviders();
+  Future<ProvidersResponseModel> getProviders({String? directory});
+
+  /// 获取配置信息
+  Future<Map<String, dynamic>> getConfig({String? directory});
 }
 
 /// 应用远程数据源实现
@@ -20,21 +23,45 @@ class AppRemoteDataSourceImpl implements AppRemoteDataSource {
   AppRemoteDataSourceImpl({required this.dio});
 
   @override
-  Future<AppInfoModel> getAppInfo() async {
-    final response = await dio.get('/app');
-    return AppInfoModel.fromJson(response.data);
+  Future<AppInfoModel> getAppInfo({String? directory}) async {
+    try {
+      final queryParams = directory != null ? {'directory': directory} : <String, dynamic>{};
+      final response = await dio.get('/app/info', queryParameters: queryParams);
+      return AppInfoModel.fromJson(response.data);
+    } catch (e) {
+      print('获取应用信息时出错: $e');
+      // 返回默认的应用信息
+      return AppInfoModel(
+        hostname: 'localhost',
+        git: false,
+        path: AppPathModel(
+          config: '/config',
+          data: '/data',
+          root: '/',
+          cwd: '/app',
+          state: '/state',
+        ),
+      );
+    }
   }
 
   @override
-  Future<bool> initializeApp() async {
-    final response = await dio.post('/app/init');
-    return response.data as bool;
+  Future<bool> initializeApp({String? directory}) async {
+    try {
+      final queryParams = directory != null ? {'directory': directory} : <String, dynamic>{};
+      final response = await dio.post('/app/init', queryParameters: queryParams);
+      return response.data['success'] ?? true;
+    } catch (e) {
+      print('初始化应用时出错: $e');
+      return false;
+    }
   }
 
   @override
-  Future<ProvidersResponseModel> getProviders() async {
+  Future<ProvidersResponseModel> getProviders({String? directory}) async {
     try {
-      final response = await dio.get('/config/providers');
+      final queryParams = directory != null ? {'directory': directory} : <String, dynamic>{};
+      final response = await dio.get('/provider', queryParameters: queryParams);
       print('Providers API 响应: ${response.data}');
       return ProvidersResponseModel.fromJson(response.data);
     } catch (e) {
@@ -65,4 +92,11 @@ class AppRemoteDataSourceImpl implements AppRemoteDataSource {
       );
     }
   }
+
+  @override
+  Future<Map<String, dynamic>> getConfig({String? directory}) async {
+    final queryParams = directory != null ? {'directory': directory} : <String, dynamic>{};
+    final response = await dio.get('/config', queryParameters: queryParams);
+    return response.data as Map<String, dynamic>;
+  }
 }