Adjust layout in CommunityStructureCanvas by adding horizontal padding to positions and refining target position calculations for improved spacing and alignment. Enhance Stack widget behavior by allowing overflow clipping.

lib/pages/space_management_v2/main_module/views/space_management_page.dart

@@ -9,6 +9,8 @@ import 'package:syncrow_web/pages/space_management_v2/modules/communities/presen
 import 'package:syncrow_web/pages/space_management_v2/modules/communities/presentation/communities_tree_selection_bloc/communities_tree_selection_bloc.dart';
 import 'package:syncrow_web/pages/space_management_v2/modules/products/data/services/remote_products_service.dart';
 import 'package:syncrow_web/pages/space_management_v2/modules/products/presentation/bloc/products_bloc.dart';
+import 'package:syncrow_web/pages/space_management_v2/modules/reorder_spaces/data/services/remote_reorder_spaces_service.dart';
+import 'package:syncrow_web/pages/space_management_v2/modules/reorder_spaces/presentation/bloc/reorder_spaces_bloc.dart';
 import 'package:syncrow_web/pages/space_management_v2/modules/space_details/data/services/remote_space_details_service.dart';
 import 'package:syncrow_web/pages/space_management_v2/modules/space_details/data/services/unique_space_details_spaces_decorator_service.dart';
 import 'package:syncrow_web/pages/space_management_v2/modules/space_details/presentation/bloc/space_details_bloc.dart';
@@ -25,15 +27,16 @@ class SpaceManagementPage extends StatefulWidget {
 
 class _SpaceManagementPageState extends State<SpaceManagementPage> {
   late final CommunitiesBloc communitiesBloc;
+  late final HTTPService _httpService;
 
   @override
   void initState() {
+    _httpService = HTTPService();
     communitiesBloc = CommunitiesBloc(
       communitiesService: DebouncedCommunitiesService(
-        RemoteCommunitiesService(HTTPService()),
+        RemoteCommunitiesService(_httpService),
       ),
     )..add(const LoadCommunities(LoadCommunitiesParam()));
-
     super.initState();
   }
 
@@ -50,13 +53,18 @@ class _SpaceManagementPageState extends State<SpaceManagementPage> {
         BlocProvider(
           create: (context) => SpaceDetailsBloc(
             UniqueSpaceDetailsSpacesDecoratorService(
-              RemoteSpaceDetailsService(httpService: HTTPService()),
+              RemoteSpaceDetailsService(httpService: _httpService),
             ),
           ),
         ),
         BlocProvider(
           create: (context) => ProductsBloc(
-            RemoteProductsService(HTTPService()),
+            RemoteProductsService(_httpService),
+          ),
+        ),
+        BlocProvider(
+          create: (context) => ReorderSpacesBloc(
+            RemoteReorderSpacesService(_httpService),
           ),
         ),
       ],

lib/pages/space_management_v2/main_module/widgets/community_structure_canvas.dart

@@ -11,6 +11,8 @@ import 'package:syncrow_web/pages/space_management_v2/modules/communities/domain
 import 'package:syncrow_web/pages/space_management_v2/modules/communities/domain/models/space_model.dart';
 import 'package:syncrow_web/pages/space_management_v2/modules/communities/presentation/bloc/communities_bloc.dart';
 import 'package:syncrow_web/pages/space_management_v2/modules/communities/presentation/communities_tree_selection_bloc/communities_tree_selection_bloc.dart';
+import 'package:syncrow_web/pages/space_management_v2/modules/reorder_spaces/domain/params/reorder_spaces_param.dart';
+import 'package:syncrow_web/pages/space_management_v2/modules/reorder_spaces/presentation/bloc/reorder_spaces_bloc.dart';
 import 'package:syncrow_web/pages/space_management_v2/modules/space_details/presentation/helpers/space_details_dialog_helper.dart';
 import 'package:syncrow_web/utils/extension/build_context_x.dart';
 
@@ -164,6 +166,16 @@ class _CommunityStructureCanvasState extends State<CommunityStructureCanvas>
     context.read<CommunitiesBloc>().add(
           CommunitiesUpdateCommunity(newCommunity),
         );
+
+    context.read<ReorderSpacesBloc>().add(
+          ReorderSpacesEvent(
+            ReorderSpacesParam(
+              communityUuid: widget.community.uuid,
+              parentSpaceUuid: data.parent?.uuid ?? '',
+              spaces: children,
+            ),
+          ),
+        );
   }
 
   void _onSpaceTapped(SpaceModel? space) {
@@ -245,6 +257,13 @@ class _CommunityStructureCanvasState extends State<CommunityStructureCanvas>
     final levelXOffset = <int, double>{};
     _calculateLayout(community.spaces, 0, levelXOffset);
 
+    const horizontalCanvasPadding = 100.0;
+    final originalPositions = Map.of(_positions);
+    _positions.clear();
+    for (final entry in originalPositions.entries) {
+      _positions[entry.key] = entry.value.translate(horizontalCanvasPadding, 0);
+    }
+
     final selectedSpace = widget.selectedSpace;
     final highlightedUuids = <String>{};
     if (selectedSpace != null) {
@@ -262,7 +281,7 @@ class _CommunityStructureCanvasState extends State<CommunityStructureCanvas>
       community: widget.community,
     );
 
-    final createButtonX = levelXOffset[0] ?? 0.0;
+    final createButtonX = (levelXOffset[0] ?? 0.0) + horizontalCanvasPadding;
     const createButtonY = 0.0;
 
     widgets.add(
@@ -294,10 +313,12 @@ class _CommunityStructureCanvasState extends State<CommunityStructureCanvas>
     CommunityModel? community,
     SpaceModel? parent,
   }) {
+    const targetWidth = 40.0;
+    final padding = (_horizontalSpacing - targetWidth) / 2;
     if (spaces.isNotEmpty) {
       final firstChildPos = _positions[spaces.first.uuid]!;
       final targetPos = Offset(
-        firstChildPos.dx - (_horizontalSpacing / 4),
+        firstChildPos.dx - padding - targetWidth,
         firstChildPos.dy,
       );
       widgets.add(_buildDropTarget(parent, community, 0, targetPos));
@@ -379,7 +400,7 @@ class _CommunityStructureCanvasState extends State<CommunityStructureCanvas>
       );
 
       final targetPos = Offset(
-        position.dx + cardWidth + (_horizontalSpacing / 4) - 20,
+        position.dx + cardWidth + padding,
         position.dy,
       );
       widgets.add(_buildDropTarget(parent, community, i + 1, targetPos));
@@ -414,24 +435,33 @@ class _CommunityStructureCanvasState extends State<CommunityStructureCanvas>
       child: DragTarget<SpaceReorderDataModel>(
         builder: (context, candidateData, rejectedData) {
           if (_draggedData == null) {
-            return const SizedBox();
+            return const SizedBox.shrink();
           }
 
-          final isTargetForDragged = (_draggedData?.parent?.uuid == parent?.uuid &&
+          final children = parent?.children ?? community?.spaces ?? [];
-                  _draggedData?.community == null) ||
+          final isSameParent = (_draggedData!.parent?.uuid == parent?.uuid &&
-              (_draggedData?.community?.uuid == community?.uuid &&
+                  _draggedData!.community == null) ||
-                  _draggedData?.parent == null);
+              (_draggedData!.community?.uuid == community?.uuid &&
+                  _draggedData!.parent == null);
 
-          if (!isTargetForDragged) {
+          if (!isSameParent) {
-            return const SizedBox();
+            return const SizedBox.shrink();
           }
 
-          return Container(
+          final oldIndex =
+              children.indexWhere((s) => s.uuid == _draggedData!.space.uuid);
+          if (oldIndex != -1 && (oldIndex == index || oldIndex == index - 1)) {
+            return const SizedBox.shrink();
+          }
+
+          return AnimatedContainer(
+            duration: const Duration(milliseconds: 150),
             width: 40,
+            alignment: Alignment.center,
             height: _cardHeight,
             decoration: BoxDecoration(
               color: context.theme.colorScheme.primary.withValues(
-                alpha: candidateData.isNotEmpty ? 0.7 : 0.3,
+                alpha: candidateData.isNotEmpty ? 0.9 : 0.3,
               ),
               borderRadius: BorderRadius.circular(8),
             ),
@@ -454,6 +484,9 @@ class _CommunityStructureCanvasState extends State<CommunityStructureCanvas>
 
           final oldIndex =
               children.indexWhere((s) => s.uuid == data.data.space.uuid);
+          if (oldIndex == -1) {
+            return true;
+          }
           if (oldIndex == index || oldIndex == index - 1) {
             return false;
           }
@@ -481,7 +514,7 @@ class _CommunityStructureCanvasState extends State<CommunityStructureCanvas>
         child: SizedBox(
           width: context.screenWidth * 5,
           height: context.screenHeight * 5,
-          child: Stack(children: treeWidgets),
+          child: Stack(clipBehavior: Clip.none, children: treeWidgets),
         ),
       ),
     );

lib/pages/space_management_v2/modules/reorder_spaces/data/services/remote_reorder_spaces_service.dart

@@ -0,0 +1,58 @@
+import 'package:dio/dio.dart';
+import 'package:syncrow_web/pages/common/bloc/project_manager.dart';
+import 'package:syncrow_web/pages/space_management_v2/modules/reorder_spaces/domain/params/reorder_spaces_param.dart';
+import 'package:syncrow_web/pages/space_management_v2/modules/reorder_spaces/domain/services/reorder_spaces_service.dart';
+import 'package:syncrow_web/services/api/api_exception.dart';
+import 'package:syncrow_web/services/api/http_service.dart';
+import 'package:syncrow_web/utils/constants/api_const.dart';
+
+final class RemoteReorderSpacesService implements ReorderSpacesService {
+  RemoteReorderSpacesService(this._httpClient);
+
+  final HTTPService _httpClient;
+
+  @override
+  Future<void> reorderSpaces(ReorderSpacesParam param) async {
+    try {
+      await _httpClient.post(
+        path: await _makeUrl(param),
+        body: param.toJson(),
+        expectedResponseModel: (json) => json,
+      );
+    } on DioException catch (e) {
+      final message = e.response?.data as Map<String, dynamic>?;
+      throw APIException(_getErrorMessageFromBody(message));
+    } catch (e) {
+      throw APIException(e.toString());
+    }
+  }
+
+  String _getErrorMessageFromBody(Map<String, dynamic>? body) {
+    if (body == null) return 'Failed to delete space';
+    final error = body['error'] as Map<String, dynamic>?;
+    final errorMessage = error?['message'] as String? ?? '';
+    return errorMessage;
+  }
+
+  Future<String> _makeUrl(ReorderSpacesParam param) async {
+    final projectUuid = await ProjectManager.getProjectUUID();
+    final communityUuid = param.communityUuid;
+
+    if (projectUuid == null || projectUuid.isEmpty) {
+      throw APIException('Project UUID is not set');
+    }
+
+    if (communityUuid.isEmpty) {
+      throw APIException('Community UUID is not set');
+    }
+
+    if (param.parentSpaceUuid.isEmpty) {
+      throw APIException('Parent Space UUID is not set');
+    }
+
+    return ApiEndpoints.reorderSpaces
+        .replaceAll('{projectUuid}', projectUuid)
+        .replaceAll('{communityUuid}', communityUuid)
+        .replaceAll('{parentSpaceUuid}', param.parentSpaceUuid);
+  }
+}

lib/pages/space_management_v2/modules/reorder_spaces/domain/params/reorder_spaces_param.dart

@@ -0,0 +1,21 @@
+import 'package:equatable/equatable.dart';
+import 'package:syncrow_web/pages/space_management_v2/modules/communities/domain/models/space_model.dart';
+
+class ReorderSpacesParam extends Equatable {
+  const ReorderSpacesParam({
+    required this.communityUuid,
+    required this.parentSpaceUuid,
+    required this.spaces,
+  });
+
+  final String communityUuid;
+  final String parentSpaceUuid;
+  final List<SpaceModel> spaces;
+
+  @override
+  List<Object?> get props => [spaces, communityUuid, parentSpaceUuid];
+
+  Map<String, dynamic> toJson() => {
+        'spacesUuids': spaces.map((space) => space.uuid).toList(),
+      };
+}

lib/pages/space_management_v2/modules/reorder_spaces/domain/services/reorder_spaces_service.dart

@@ -0,0 +1,5 @@
+import 'package:syncrow_web/pages/space_management_v2/modules/reorder_spaces/domain/params/reorder_spaces_param.dart';
+
+abstract interface class ReorderSpacesService {
+  Future<void> reorderSpaces(ReorderSpacesParam param);
+}

lib/pages/space_management_v2/modules/reorder_spaces/presentation/bloc/reorder_spaces_bloc.dart

@@ -0,0 +1,35 @@
+import 'package:bloc/bloc.dart';
+import 'package:equatable/equatable.dart';
+import 'package:syncrow_web/pages/space_management_v2/modules/reorder_spaces/domain/params/reorder_spaces_param.dart';
+import 'package:syncrow_web/pages/space_management_v2/modules/reorder_spaces/domain/services/reorder_spaces_service.dart';
+import 'package:syncrow_web/services/api/api_exception.dart';
+
+part 'reorder_spaces_event.dart';
+part 'reorder_spaces_state.dart';
+
+class ReorderSpacesBloc extends Bloc<ReorderSpacesEvent, ReorderSpacesState> {
+  ReorderSpacesBloc(
+    this._reorderSpacesService,
+  ) : super(const ReorderSpacesInitial()) {
+    on<ReorderSpacesEvent>(_onReorderSpacesEvent);
+  }
+
+  final ReorderSpacesService _reorderSpacesService;
+
+  Future<void> _onReorderSpacesEvent(
+    ReorderSpacesEvent event,
+    Emitter<ReorderSpacesState> emit,
+  ) async {
+    emit(const ReorderSpacesLoading());
+    try {
+      await _reorderSpacesService.reorderSpaces(event.param);
+      emit(const ReorderSpacesSuccess());
+    } on APIException catch (e) {
+      emit(ReorderSpacesFailure(e.message));
+    } catch (e) {
+      emit(ReorderSpacesFailure(e.toString()));
+    } finally {
+      emit(const ReorderSpacesInitial());
+    }
+  }
+}

lib/pages/space_management_v2/modules/reorder_spaces/presentation/bloc/reorder_spaces_event.dart

@@ -0,0 +1,10 @@
+part of 'reorder_spaces_bloc.dart';
+
+final class ReorderSpacesEvent extends Equatable {
+  const ReorderSpacesEvent(this.param);
+
+  final ReorderSpacesParam param;
+
+  @override
+  List<Object> get props => [param];
+}

lib/pages/space_management_v2/modules/reorder_spaces/presentation/bloc/reorder_spaces_state.dart

@@ -0,0 +1,29 @@
+part of 'reorder_spaces_bloc.dart';
+
+sealed class ReorderSpacesState extends Equatable {
+  const ReorderSpacesState();
+
+  @override
+  List<Object> get props => [];
+}
+
+final class ReorderSpacesInitial extends ReorderSpacesState {
+  const ReorderSpacesInitial();
+}
+
+final class ReorderSpacesLoading extends ReorderSpacesState {
+  const ReorderSpacesLoading();
+}
+
+final class ReorderSpacesSuccess extends ReorderSpacesState {
+  const ReorderSpacesSuccess();
+}
+
+final class ReorderSpacesFailure extends ReorderSpacesState {
+  const ReorderSpacesFailure(this.errorMessage);
+
+  final String errorMessage;
+
+  @override
+  List<Object> get props => [errorMessage];
+}

lib/utils/constants/api_const.dart

@@ -41,6 +41,8 @@ abstract class ApiEndpoints {
       '/projects/{projectId}/communities/{communityId}/spaces/{spaceId}';
   static const String getSpaceHierarchy =
       '/projects/{projectId}/communities/{communityId}/spaces';
+  static const String reorderSpaces =
+      '/projects/{projectUuid}/communities/{communityUuid}/spaces/{parentSpaceUuid}/spaces/order';
 
 // Community Module
   static const String createCommunity = '/projects/{projectId}/communities';