Add SpaceReorderDataModel and integrate drag-and-drop functionality in CommunityStructureCanvas for improved space management.

lib/pages/space_management_v2/main_module/models/space_reorder_data_model.dart

@@ -0,0 +1,14 @@
+import 'package:syncrow_web/pages/space_management_v2/modules/communities/domain/models/community_model.dart';
+import 'package:syncrow_web/pages/space_management_v2/modules/communities/domain/models/space_model.dart';
+
+class SpaceReorderDataModel {
+  const SpaceReorderDataModel({
+    required this.space,
+    this.parent,
+    this.community,
+  });
+
+  final SpaceModel space;
+  final SpaceModel? parent;
+  final CommunityModel? community;
+}

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

@@ -1,13 +1,17 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:syncrow_web/pages/space_management_v2/main_module/models/space_connection_model.dart';
+import 'package:syncrow_web/pages/space_management_v2/main_module/models/space_reorder_data_model.dart';
 import 'package:syncrow_web/pages/space_management_v2/main_module/painters/spaces_connections_arrow_painter.dart';
+import 'package:syncrow_web/pages/space_management_v2/main_module/widgets/create_space_button.dart';
 import 'package:syncrow_web/pages/space_management_v2/main_module/widgets/space_card_widget.dart';
 import 'package:syncrow_web/pages/space_management_v2/main_module/widgets/space_cell.dart';
 import 'package:syncrow_web/pages/space_management_v2/modules/communities/domain/models/community_model.dart';
 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/space_details/presentation/helpers/space_details_dialog_helper.dart';
+import 'package:syncrow_web/utils/extension/build_context_x.dart';
 
 class CommunityStructureCanvas extends StatefulWidget {
   const CommunityStructureCanvas({
@@ -31,8 +35,9 @@ class _CommunityStructureCanvasState extends State<CommunityStructureCanvas>
   final double _horizontalSpacing = 150.0;
   final double _verticalSpacing = 120.0;
 
-  late TransformationController _transformationController;
-  late AnimationController _animationController;
+  late final TransformationController _transformationController;
+  late final AnimationController _animationController;
+  SpaceReorderDataModel? _draggedData;
 
   @override
   void initState() {
@@ -97,7 +102,7 @@ class _CommunityStructureCanvasState extends State<CommunityStructureCanvas>
     final position = _positions[space.uuid];
     if (position == null) return;
 
-    const scale = 1.5;
+    const scale = 1;
     final viewSize = context.size;
     if (viewSize == null) return;
 
@@ -112,16 +117,33 @@ class _CommunityStructureCanvasState extends State<CommunityStructureCanvas>
     _runAnimation(matrix);
   }
 
+  void _onReorder(SpaceReorderDataModel data, int newIndex) {
+    final newCommunity = widget.community.copyWith();
+    final children = data.parent?.children ?? newCommunity.spaces;
+    final oldIndex = children.indexWhere((s) => s.uuid == data.space.uuid);
+    if (oldIndex != -1) {
+      final item = children.removeAt(oldIndex);
+      if (newIndex > oldIndex) {
+        children.insert(newIndex - 1, item);
+      } else {
+        children.insert(newIndex, item);
+      }
+    }
+    context.read<CommunitiesBloc>().add(
+          CommunitiesUpdateCommunity(newCommunity),
+        );
+  }
+
   void _onSpaceTapped(SpaceModel? space) {
     context.read<CommunitiesTreeSelectionBloc>().add(
           SelectSpaceEvent(community: widget.community, space: space),
         );
   }
 
-  void _resetSelectionAndZoom() {
+  void _resetSelectionAndZoom([CommunityModel? community]) {
     context.read<CommunitiesTreeSelectionBloc>().add(
           SelectSpaceEvent(
-            community: widget.community,
+            community: community ?? widget.community,
             space: null,
           ),
         );
@@ -182,7 +204,8 @@ class _CommunityStructureCanvasState extends State<CommunityStructureCanvas>
     _positions.clear();
     final community = widget.community;
 
-    _calculateLayout(community.spaces, 0, {});
+    final levelXOffset = <int, double>{};
+    _calculateLayout(community.spaces, 0, levelXOffset);
 
     final selectedSpace = widget.selectedSpace;
     final highlightedUuids = <String>{};
@@ -193,7 +216,24 @@ class _CommunityStructureCanvasState extends State<CommunityStructureCanvas>
 
     final widgets = <Widget>[];
     final connections = <SpaceConnectionModel>[];
-    _generateWidgets(community.spaces, widgets, connections, highlightedUuids);
+    _generateWidgets(
+      widget.community.spaces,
+      widgets,
+      connections,
+      highlightedUuids,
+      community: widget.community,
+    );
+
+    final createButtonX = levelXOffset[0] ?? 0.0;
+    const createButtonY = 0.0;
+
+    widgets.add(
+      Positioned(
+        left: createButtonX,
+        top: createButtonY,
+        child: CreateSpaceButton(communityUuid: widget.community.uuid),
+      ),
+    );
 
     return [
       CustomPaint(
@@ -211,58 +251,178 @@ class _CommunityStructureCanvasState extends State<CommunityStructureCanvas>
     List<SpaceModel> spaces,
     List<Widget> widgets,
     List<SpaceConnectionModel> connections,
-    Set<String> highlightedUuids,
-  ) {
-    for (final space in spaces) {
+    Set<String> highlightedUuids, {
+    CommunityModel? community,
+    SpaceModel? parent,
+  }) {
+    if (spaces.isNotEmpty) {
+      final firstChildPos = _positions[spaces.first.uuid]!;
+      final targetPos = Offset(
+        firstChildPos.dx - (_horizontalSpacing / 4),
+        firstChildPos.dy,
+      );
+      widgets.add(_buildDropTarget(parent, community, 0, targetPos));
+    }
+
+    for (var i = 0; i < spaces.length; i++) {
+      final space = spaces[i];
       final position = _positions[space.uuid];
-      if (position == null) continue;
+      if (position == null) {
+        continue;
+      }
 
       final isHighlighted = highlightedUuids.contains(space.uuid);
       final hasNoSelectedSpace = widget.selectedSpace == null;
 
+      final spaceCard = SpaceCardWidget(
+        buildSpaceContainer: () {
+          return Opacity(
+            opacity: hasNoSelectedSpace || isHighlighted ? 1.0 : 0.5,
+            child: Tooltip(
+              message: space.spaceName,
+              preferBelow: false,
+              child: SpaceCell(
+                onTap: () => _onSpaceTapped(space),
+                icon: space.icon,
+                name: space.spaceName,
+              ),
+            ),
+          );
+        },
+        onTap: () => SpaceDetailsDialogHelper.showCreate(
+          context,
+          communityUuid: widget.community.uuid,
+        ),
+      );
+
+      final reorderData = SpaceReorderDataModel(
+        space: space,
+        parent: parent,
+        community: community,
+      );
+
       widgets.add(
         Positioned(
           left: position.dx,
           top: position.dy,
           width: _cardWidth,
           height: _cardHeight,
-          child: SpaceCardWidget(
-            buildSpaceContainer: () {
-              return Opacity(
-                opacity: hasNoSelectedSpace || isHighlighted ? 1.0 : 0.5,
-                child: Tooltip(
-                  message: space.spaceName,
-                  preferBelow: false,
-                  child: SpaceCell(
-                    onTap: () => _onSpaceTapped(space),
-                    icon: space.icon,
-                    name: space.spaceName,
-                  ),
+          child: Draggable<SpaceReorderDataModel>(
+            data: reorderData,
+            feedback: Material(
+              color: Colors.transparent,
+              child: Opacity(
+                opacity: 0.2,
+                child: SizedBox(
+                  width: _cardWidth,
+                  height: _cardHeight,
+                  child: spaceCard,
                 ),
-              );
-            },
-            onTap: () => SpaceDetailsDialogHelper.showCreate(context),
+              ),
+            ),
+            onDragStarted: () => setState(() => _draggedData = reorderData),
+            onDragEnd: (_) => setState(() => _draggedData = null),
+            onDraggableCanceled: (_, __) => setState(() => _draggedData = null),
+            childWhenDragging: Opacity(opacity: 0.4, child: spaceCard),
+            child: spaceCard,
           ),
         ),
       );
 
+      final targetPos = Offset(
+        position.dx + _cardWidth + (_horizontalSpacing / 4) - 20,
+        position.dy,
+      );
+      widgets.add(_buildDropTarget(parent, community, i + 1, targetPos));
+
       for (final child in space.children) {
-        connections.add(
-          SpaceConnectionModel(from: space.uuid, to: child.uuid),
+        connections.add(SpaceConnectionModel(from: space.uuid, to: child.uuid));
+      }
+
+      if (space.children.isNotEmpty) {
+        _generateWidgets(
+          space.children,
+          widgets,
+          connections,
+          highlightedUuids,
+          parent: space,
         );
       }
-      _generateWidgets(space.children, widgets, connections, highlightedUuids);
     }
   }
 
+  Widget _buildDropTarget(
+    SpaceModel? parent,
+    CommunityModel? community,
+    int index,
+    Offset position,
+  ) {
+    return Positioned(
+      left: position.dx,
+      top: position.dy,
+      width: 40,
+      height: _cardHeight,
+      child: DragTarget<SpaceReorderDataModel>(
+        builder: (context, candidateData, rejectedData) {
+          if (_draggedData == null) {
+            return const SizedBox();
+          }
+
+          final isTargetForDragged = (_draggedData?.parent?.uuid == parent?.uuid &&
+                  _draggedData?.community == null) ||
+              (_draggedData?.community?.uuid == community?.uuid &&
+                  _draggedData?.parent == null);
+
+          if (!isTargetForDragged) {
+            return const SizedBox();
+          }
+
+          return Container(
+            width: 40,
+            height: _cardHeight,
+            decoration: BoxDecoration(
+              color: context.theme.colorScheme.primary.withValues(
+                alpha: candidateData.isNotEmpty ? 0.7 : 0.3,
+              ),
+              borderRadius: BorderRadius.circular(8),
+            ),
+            child: Icon(
+              Icons.add,
+              color: context.theme.colorScheme.onPrimary,
+            ),
+          );
+        },
+        onWillAcceptWithDetails: (data) {
+          final children = parent?.children ?? community?.spaces ?? [];
+          final isSameParent = (data.data.parent?.uuid == parent?.uuid &&
+                  data.data.community == null) ||
+              (data.data.community?.uuid == community?.uuid &&
+                  data.data.parent == null);
+
+          if (!isSameParent) {
+            return false;
+          }
+
+          final oldIndex =
+              children.indexWhere((s) => s.uuid == data.data.space.uuid);
+          if (oldIndex == index || oldIndex == index - 1) {
+            return false;
+          }
+          return true;
+        },
+        onAcceptWithDetails: (data) => _onReorder(data.data, index),
+      ),
+    );
+  }
+
   @override
   Widget build(BuildContext context) {
     final treeWidgets = _buildTreeWidgets();
     return InteractiveViewer(
       transformationController: _transformationController,
       boundaryMargin: EdgeInsets.symmetric(
-        horizontal: MediaQuery.sizeOf(context).width * 0.3,
-        vertical: MediaQuery.sizeOf(context).height * 0.3,
+        horizontal: context.screenWidth * 0.3,
+        vertical: context.screenHeight * 0.3,
       ),
       minScale: 0.5,
       maxScale: 3.0,
@@ -270,8 +430,8 @@ class _CommunityStructureCanvasState extends State<CommunityStructureCanvas>
       child: GestureDetector(
         onTap: _resetSelectionAndZoom,
         child: SizedBox(
-          width: MediaQuery.sizeOf(context).width * 5,
-          height: MediaQuery.sizeOf(context).height * 5,
+          width: context.screenWidth * 5,
+          height: context.screenHeight * 5,
           child: Stack(children: treeWidgets),
         ),
       ),

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

@@ -55,8 +55,9 @@ class CommunityStructureHeader extends StatelessWidget {
       children: [
         Text(
           'Community Structure',
-          style: theme.textTheme.headlineLarge
-              ?.copyWith(color: ColorsManager.blackColor),
+          style: theme.textTheme.headlineLarge?.copyWith(
+            color: ColorsManager.blackColor,
+          ),
         ),
         if (selectedCommunity != null)
           Row(
@@ -67,8 +68,9 @@ class CommunityStructureHeader extends StatelessWidget {
                     Flexible(
                       child: SelectableText(
                         selectedCommunity.name,
-                        style: theme.textTheme.bodyLarge
-                            ?.copyWith(color: ColorsManager.blackColor),
+                        style: theme.textTheme.bodyLarge?.copyWith(
+                          color: ColorsManager.blackColor,
+                        ),
                         maxLines: 1,
                       ),
                     ),
@@ -93,13 +95,11 @@ class CommunityStructureHeader extends StatelessWidget {
               CommunityStructureHeaderActionButtons(
                 onDelete: (space) {},
                 onDuplicate: (space) {},
-                onEdit: (space) {
-                  SpaceDetailsDialogHelper.showEdit(
-                    context,
-                    spaceModel: selectedSpace!,
-                    communityUuid: selectedCommunity.uuid,
-                  );
-                },
+                onEdit: (space) => SpaceDetailsDialogHelper.showEdit(
+                  context,
+                  spaceModel: selectedSpace!,
+                  communityUuid: selectedCommunity.uuid,
+                ),
                 selectedSpace: selectedSpace,
               ),
             ],

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

@@ -2,38 +2,66 @@ import 'package:flutter/material.dart';
 import 'package:syncrow_web/pages/space_management_v2/modules/space_details/presentation/helpers/space_details_dialog_helper.dart';
 import 'package:syncrow_web/utils/color_manager.dart';
 
-class CreateSpaceButton extends StatelessWidget {
-  const CreateSpaceButton({super.key});
+class CreateSpaceButton extends StatefulWidget {
+  const CreateSpaceButton({
+    required this.communityUuid,
+    super.key,
+  });
+
+  final String communityUuid;
+
+  @override
+  State<CreateSpaceButton> createState() => _CreateSpaceButtonState();
+}
+
+class _CreateSpaceButtonState extends State<CreateSpaceButton> {
+  bool _isHovered = false;
 
   @override
   Widget build(BuildContext context) {
-    return GestureDetector(
-      onTap: () => SpaceDetailsDialogHelper.showCreate(context),
-      child: Container(
-        height: 60,
-        decoration: BoxDecoration(
-          color: Colors.white,
-          borderRadius: BorderRadius.circular(20),
-          boxShadow: [
-            BoxShadow(
-              color: Colors.grey.withValues(alpha: 0.5),
-              spreadRadius: 5,
-              blurRadius: 7,
-              offset: const Offset(0, 3),
-            ),
-          ],
+    return Tooltip(
+      margin: const EdgeInsets.symmetric(vertical: 24),
+      message: 'Create a new space',
+      child: GestureDetector(
+        onTap: () => SpaceDetailsDialogHelper.showCreate(
+          context,
+          communityUuid: widget.communityUuid,
         ),
-        child: Center(
-          child: Container(
-            width: 40,
-            height: 40,
-            decoration: const BoxDecoration(
-              color: ColorsManager.boxColor,
-              shape: BoxShape.circle,
-            ),
-            child: const Icon(
-              Icons.add,
-              color: Colors.blue,
+        child: MouseRegion(
+          onEnter: (_) => setState(() => _isHovered = true),
+          onExit: (_) => setState(() => _isHovered = false),
+          child: AnimatedOpacity(
+            duration: const Duration(milliseconds: 100),
+            opacity: _isHovered ? 1.0 : 0.45,
+            child: Container(
+              width: 150,
+              height: 90,
+              decoration: BoxDecoration(
+                color: Colors.white,
+                borderRadius: BorderRadius.circular(20),
+                boxShadow: [
+                  BoxShadow(
+                    color: Colors.grey.withValues(alpha: 0.2),
+                    spreadRadius: 3,
+                    blurRadius: 8,
+                    offset: const Offset(0, 4),
+                  ),
+                ],
+              ),
+              child: Container(
+                margin: const EdgeInsets.symmetric(vertical: 20),
+                decoration: BoxDecoration(
+                  border: Border.all(color: ColorsManager.borderColor, width: 2),
+                  color: ColorsManager.boxColor,
+                  shape: BoxShape.circle,
+                ),
+                child: const Center(
+                  child: Icon(
+                    Icons.add,
+                    color: Colors.blue,
+                  ),
+                ),
+              ),
             ),
           ),
         ),

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

@@ -22,22 +22,20 @@ class _SpaceCardWidgetState extends State<SpaceCardWidget> {
     return MouseRegion(
       onEnter: (_) => setState(() => isHovered = true),
       onExit: (_) => setState(() => isHovered = false),
-      child: SizedBox(
-        child: Stack(
-          clipBehavior: Clip.none,
-          alignment: Alignment.center,
-          children: [
-            widget.buildSpaceContainer(),
-            if (isHovered)
-              Positioned(
-                bottom: 0,
-                child: PlusButtonWidget(
-                  offset: Offset.zero,
-                  onButtonTap: widget.onTap,
-                ),
+      child: Stack(
+        clipBehavior: Clip.none,
+        alignment: Alignment.center,
+        children: [
+          widget.buildSpaceContainer(),
+          if (isHovered)
+            Positioned(
+              bottom: 0,
+              child: PlusButtonWidget(
+                offset: Offset.zero,
+                onButtonTap: widget.onTap,
               ),
-          ],
-        ),
+            ),
+        ],
       ),
     );
   }

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

@@ -13,11 +13,17 @@ class SpaceManagementCommunityStructure extends StatelessWidget {
     final selectionBloc = context.watch<CommunitiesTreeSelectionBloc>().state;
     final selectedCommunity = selectionBloc.selectedCommunity;
     final selectedSpace = selectionBloc.selectedSpace;
-    const spacer = Spacer(flex: 10);
+    const spacer = Spacer(flex: 6);
     return Visibility(
       visible: selectedCommunity!.spaces.isNotEmpty,
-      replacement: const Row(
-        children: [spacer, Expanded(child: CreateSpaceButton()), spacer],
+      replacement: Row(
+        children: [
+          spacer,
+          Expanded(
+            child: CreateSpaceButton(communityUuid: selectedCommunity.uuid),
+          ),
+          spacer
+        ],
       ),
       child: Column(
         mainAxisSize: MainAxisSize.min,

lib/pages/space_management_v2/modules/space_details/presentation/helpers/space_details_dialog_helper.dart

@@ -11,7 +11,10 @@ import 'package:syncrow_web/pages/space_management_v2/modules/update_space/prese
 import 'package:syncrow_web/services/api/http_service.dart';
 
 abstract final class SpaceDetailsDialogHelper {
-  static void showCreate(BuildContext context) {
+  static void showCreate(
+    BuildContext context, {
+    required String communityUuid,
+  }) {
     showDialog<void>(
       context: context,
       builder: (_) => MultiBlocProvider(
@@ -33,6 +36,7 @@ abstract final class SpaceDetailsDialogHelper {
             title: const SelectableText('Create Space'),
             spaceModel: SpaceModel.empty(),
             onSave: (space) {},
+            communityUuid: communityUuid,
           ),
         ),
       ),
@@ -74,6 +78,7 @@ abstract final class SpaceDetailsDialogHelper {
                       ),
                     ),
                   ),
+              communityUuid: communityUuid,
             ),
           ),
         ),

lib/pages/space_management_v2/modules/space_details/presentation/widgets/space_details_dialog.dart

@@ -1,7 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 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/communities_tree_selection_bloc/communities_tree_selection_bloc.dart';
 import 'package:syncrow_web/pages/space_management_v2/modules/space_details/domain/models/space_details_model.dart';
 import 'package:syncrow_web/pages/space_management_v2/modules/space_details/domain/params/load_space_details_param.dart';
 import 'package:syncrow_web/pages/space_management_v2/modules/space_details/presentation/bloc/space_details_bloc.dart';
@@ -15,6 +14,7 @@ class SpaceDetailsDialog extends StatefulWidget {
     required this.spaceModel,
     required this.onSave,
     required this.context,
+    required this.communityUuid,
     super.key,
   });
 
@@ -22,6 +22,7 @@ class SpaceDetailsDialog extends StatefulWidget {
   final SpaceModel spaceModel;
   final void Function(SpaceDetailsModel space) onSave;
   final BuildContext context;
+  final String communityUuid;
 
   @override
   State<SpaceDetailsDialog> createState() => _SpaceDetailsDialogState();
@@ -35,11 +36,7 @@ class _SpaceDetailsDialogState extends State<SpaceDetailsDialog> {
     if (!isCreateMode) {
       final param = LoadSpaceDetailsParam(
         spaceUuid: widget.spaceModel.uuid,
-        communityUuid: widget.context
-            .read<CommunitiesTreeSelectionBloc>()
-            .state
-            .selectedCommunity!
-            .uuid,
+        communityUuid: widget.communityUuid,
       );
       widget.context.read<SpaceDetailsBloc>().add(LoadSpaceDetails(param));
     }

lib/pages/space_management_v2/modules/update_space/data/services/remote_update_space_service.dart

@@ -17,19 +17,20 @@ class RemoteUpdateSpaceService implements UpdateSpaceService {
   Future<SpaceDetailsModel> updateSpace(UpdateSpaceParam param) async {
     try {
       final path = await _makeUrl(param);
-      final response = await _httpService.put(
+      await _httpService.put(
         path: path,
         body: param.space.toJson(),
         expectedResponseModel: (data) {
           final response = data as Map<String, dynamic>;
-          final space = SpaceDetailsModel.fromJson(
-            response['data'] as Map<String, dynamic>,
-          );
-          return space;
+          final isSuccess = response['success'] as bool;
+          if (!isSuccess) {
+            throw APIException(response['error'] as String);
+          }
+          return isSuccess;
         },
       );
 
-      return response;
+      return param.space;
     } on DioException catch (e) {
       final message = e.response?.data as Map<String, dynamic>?;
       final error = message?['error'] as Map<String, dynamic>?;
@@ -51,6 +52,16 @@ class RemoteUpdateSpaceService implements UpdateSpaceService {
       throw APIException('Project UUID is not set');
     }
 
-    return '/projects/$projectUuid/communities/${param.communityUuid}/spaces/${param.space.uuid}';
+    final spaceUuid = param.space.uuid;
+    if (spaceUuid.isEmpty) {
+      throw APIException('Space UUID is not set');
+    }
+
+    final communityUuid = param.communityUuid;
+    if (communityUuid.isEmpty) {
+      throw APIException('Community UUID is not set');
+    }
+
+    return '/projects/$projectUuid/communities/$communityUuid/spaces/$spaceUuid';
   }
 }

lib/pages/space_management_v2/modules/update_space/domain/params/update_space_param.dart

@@ -8,4 +8,38 @@ class UpdateSpaceParam {
 
   final SpaceDetailsModel space;
   final String communityUuid;
+
+  Map<String, dynamic> toJson() {
+    return {
+      'spaceName': space.spaceName,
+      'icon': space.icon,
+      'subspaces': space.subspaces
+          .map(
+            (e) => {
+              'subspaceName': e.name,
+              'productAllocations': e.productAllocations
+                  .map(
+                    (e) => {
+                      'name': e.tag.name,
+                      'productUuid': e.product.uuid,
+                      'uuid': e.uuid,
+                    },
+                  )
+                  .toList(),
+              'uuid': e.uuid,
+            },
+          )
+          .toList(),
+      'productAllocations': space.productAllocations
+          .map(
+            (e) => {
+              'tagName': e.tag.name,
+              'tagUuid': e.tag.uuid,
+              'productUuid': e.product.uuid,
+            },
+          )
+          .toList(),
+      'spaceModelUuid': space.uuid,
+    };
+  }
 }