deleting subspace won't remove tag

lib/pages/device_managment/all_devices/models/device_subspace.model.dart

@@ -0,0 +1,47 @@
+class DeviceSubspace {
+  final String uuid;
+  final DateTime? createdAt;
+  final DateTime? updatedAt;
+  final String subspaceName;
+  final bool disabled;
+
+  DeviceSubspace({
+    required this.uuid,
+    this.createdAt,
+    this.updatedAt,
+    required this.subspaceName,
+    required this.disabled,
+  });
+
+  factory DeviceSubspace.fromJson(Map<String, dynamic> json) {
+    return DeviceSubspace(
+      uuid: json['uuid'] as String,
+      createdAt: json['createdAt'] != null
+          ? DateTime.tryParse(json['createdAt'].toString())
+          : null,
+      updatedAt: json['updatedAt'] != null
+          ? DateTime.tryParse(json['updatedAt'].toString())
+          : null,
+      subspaceName: json['subspaceName'] as String,
+      disabled: json['disabled'] as bool,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'uuid': uuid,
+      'createdAt': createdAt?.toIso8601String(),
+      'updatedAt': updatedAt?.toIso8601String(),
+      'subspaceName': subspaceName,
+      'disabled': disabled,
+    };
+  }
+
+  static List<DeviceSubspace> listFromJson(List<dynamic> jsonList) {
+    return jsonList.map((json) => DeviceSubspace.fromJson(json)).toList();
+  }
+
+  static List<Map<String, dynamic>> listToJson(List<DeviceSubspace> subspaces) {
+    return subspaces.map((subspace) => subspace.toJson()).toList();
+  }
+}

lib/pages/device_managment/all_devices/models/devices_model.dart

@@ -1,5 +1,6 @@
 import 'package:syncrow_web/pages/device_managment/all_devices/models/device_community.model.dart';
 import 'package:syncrow_web/pages/device_managment/all_devices/models/device_space_model.dart';
+import 'package:syncrow_web/pages/device_managment/all_devices/models/device_subspace.model.dart';
 import 'package:syncrow_web/pages/device_managment/all_devices/models/room.dart';
 import 'package:syncrow_web/pages/device_managment/all_devices/models/unit.dart';
 import 'package:syncrow_web/pages/routiens/models/ac/ac_function.dart';
@@ -47,6 +48,7 @@ class AllDevicesModel {
 */
 
   DevicesModelRoom? room;
+  DeviceSubspace? subspace;
   DevicesModelUnit? unit;
   DeviceCommunityModel? community;
   String? productUuid;
@@ -77,6 +79,7 @@ class AllDevicesModel {
 
   AllDevicesModel({
     this.room,
+    this.subspace,
     this.unit,
     this.community,
     this.productUuid,
@@ -110,6 +113,9 @@ class AllDevicesModel {
     room = (json['room'] != null && (json['room'] is Map))
         ? DevicesModelRoom.fromJson(json['room'])
         : null;
+    subspace = (json['subspace'] != null && (json['subspace'] is Map))
+        ? DeviceSubspace.fromJson(json['subspace'])
+        : null;
     unit = (json['unit'] != null && (json['unit'] is Map))
         ? DevicesModelUnit.fromJson(json['unit'])
         : null;
@@ -288,6 +294,9 @@ SOS
     if (room != null) {
       data['room'] = room!.toJson();
     }
+    if (subspace != null) {
+      data['subspace'] = subspace!.toJson();
+    }
     if (unit != null) {
       data['unit'] = unit!.toJson();
     }
@@ -330,6 +339,7 @@ SOS
 
     return other is AllDevicesModel &&
         other.room == room &&
+        other.subspace == subspace &&
         other.unit == unit &&
         other.productUuid == productUuid &&
         other.productType == productType &&
@@ -360,6 +370,7 @@ SOS
   @override
   int get hashCode {
     return room.hashCode ^
+        subspace.hashCode ^
         unit.hashCode ^
         productUuid.hashCode ^
         productType.hashCode ^

lib/pages/device_managment/shared/device_control_dialog.dart

@@ -95,8 +95,9 @@ class DeviceControlDialog extends StatelessWidget with RouteControlsBasedCode {
           ]),
           TableRow(
             children: [
-              _buildInfoRow('Space Name:', device.unit?.name ?? 'N/A'),
+              _buildInfoRow('Space Name:',
-              _buildInfoRow('Room:', device.room?.name ?? 'N/A'),
+                  device.spaces?.firstOrNull?.spaceName ?? 'N/A'),
+              _buildInfoRow('Room:', device.subspace?.subspaceName ?? 'N/A'),
             ],
           ),
           TableRow(
@@ -111,9 +112,13 @@ class DeviceControlDialog extends StatelessWidget with RouteControlsBasedCode {
               ),
               _buildInfoRow(
                 'Battery Level:',
-                device.batteryLevel != null ? '${device.batteryLevel ?? 0}%' : "-",
+                device.batteryLevel != null
+                    ? '${device.batteryLevel ?? 0}%'
+                    : "-",
                 statusColor: device.batteryLevel != null
-                    ? (device.batteryLevel! < 20 ? ColorsManager.red : ColorsManager.green)
+                    ? (device.batteryLevel! < 20
+                        ? ColorsManager.red
+                        : ColorsManager.green)
                     : null,
               ),
             ],

lib/pages/spaces_management/all_spaces/model/subspace_model.dart

@@ -1,5 +1,6 @@
 import 'package:syncrow_web/pages/spaces_management/all_spaces/model/product_model.dart';
 import 'package:syncrow_web/utils/constants/action_enum.dart';
+import 'package:uuid/uuid.dart';
 
 import 'tag.dart';
 
@@ -8,19 +9,24 @@ class SubspaceModel {
   String subspaceName;
   final bool disabled;
   List<Tag>? tags;
+  String internalId;
 
   SubspaceModel({
     this.uuid,
     required this.subspaceName,
     required this.disabled,
     this.tags,
-  });
+    String? internalId,
+  }) : internalId = internalId ?? const Uuid().v4();
 
   factory SubspaceModel.fromJson(Map<String, dynamic> json) {
+    final String internalId = json['internalId'] ?? const Uuid().v4();
+
     return SubspaceModel(
       uuid: json['uuid'] ?? '',
       subspaceName: json['subspaceName'] ?? '',
       disabled: json['disabled'] ?? false,
+      internalId: internalId,
       tags: (json['tags'] as List<dynamic>?)
               ?.map((item) => Tag.fromJson(item))
               .toList() ??

lib/pages/spaces_management/all_spaces/widgets/dialogs/create_space_dialog.dart

@@ -358,10 +358,21 @@ class CreateSpaceDialogState extends State<CreateSpaceDialog> {
                                           SubspaceNameDisplayWidget(
                                             text: subspace.subspaceName,
                                             validateName: (updatedName) {
-                                              return subspaces!.any((s) =>
+                                              bool nameExists =
-                                                  s != subspace &&
+                                                  subspaces!.any((s) {
-                                                  s.subspaceName ==
+                                                bool isSameId = s.internalId ==
-                                                      updatedName);
+                                                    subspace.internalId;
+                                                bool isSameName = s.subspaceName
+                                                        .trim()
+                                                        .toLowerCase() ==
+                                                    updatedName
+                                                        .trim()
+                                                        .toLowerCase();
+
+                                                return !isSameId && isSameName;
+                                              });
+
+                                              return !nameExists;
                                             },
                                             onNameChanged: (updatedName) {
                                               setState(() {

lib/pages/spaces_management/assign_tag/views/assign_tag_dialog.dart

@@ -237,7 +237,8 @@ class AssignTagDialog extends StatelessWidget {
 
                             final processedTags =
                                 result['updatedTags'] as List<Tag>;
-                            final processedSubspaces = result['subspaces'];
+                            final processedSubspaces = List<SubspaceModel>.from(
+                                result['subspaces'] as List<dynamic>);
 
                             Navigator.of(context).pop();
 
@@ -276,7 +277,8 @@ class AssignTagDialog extends StatelessWidget {
                                 final processedTags =
                                     result['updatedTags'] as List<Tag>;
                                 final processedSubspaces =
-                                    result['subspaces'] as List<SubspaceModel>;
+                                    List<SubspaceModel>.from(
+                                        result['subspaces'] as List<dynamic>);
                                 onSave?.call(processedTags, processedSubspaces);
                                 Navigator.of(context).pop();
                               }
@@ -301,105 +303,31 @@ class AssignTagDialog extends StatelessWidget {
 
   List<String> getAvailableTags(
       List<String> allTags, List<Tag> currentTags, Tag currentTag) {
-    return allTags
+    List<String> availableTagsForTagModel = TagHelper.getAvailableTags<Tag>(
-        .where((tagValue) => !currentTags
+      allTags: allTags,
-            .where((e) => e != currentTag) // Exclude the current row
+      currentTags: currentTags,
-            .map((e) => e.tag)
+      currentTag: currentTag,
-            .contains(tagValue))
+      getTag: (tag) => tag.tag ?? '',
-        .toList();
+    );
+    return availableTagsForTagModel;
   }
 
   Map<String, dynamic> processTags(
       List<Tag> updatedTags, List<SubspaceModel>? subspaces) {
-    final modifiedTags = List<Tag>.from(updatedTags);
+    return TagHelper.updateTags<Tag>(
-    final modifiedSubspaces = List<SubspaceModel>.from(subspaces ?? []);
+      updatedTags: updatedTags,
-
+      subspaces: subspaces,
-    if (subspaces != null) {
+      getInternalId: (tag) => tag.internalId,
-      for (var subspace in subspaces) {
+      getLocation: (tag) => tag.location,
-        subspace.tags?.removeWhere(
+      setLocation: (tag, location) => tag.location = location,
-          (tag) => !modifiedTags
+      getSubspaceName: (subspace) => subspace.subspaceName,
-              .any((updatedTag) => updatedTag.internalId == tag.internalId),
+      getSubspaceTags: (subspace) => subspace.tags,
+      setSubspaceTags: (subspace, tags) => subspace.tags = tags,
+      checkTagExistInSubspace: checkTagExistInSubspace,
     );
   }
-    }
-    for (var tag in modifiedTags.toList()) {
-      if (modifiedSubspaces.isEmpty) continue;
 
-      final prevIndice = checkTagExistInSubspace(tag, modifiedSubspaces);
+  int? checkTagExistInSubspace(Tag tag, List<dynamic>? subspaces) {
-
-      if ((tag.location == 'Main Space' || tag.location == null) &&
-          (prevIndice == null ||
-              modifiedSubspaces[prevIndice].subspaceName == 'Main Space')) {
-        continue;
-      }
-
-      if ((tag.location == 'Main Space' || tag.location == null) &&
-          prevIndice != null) {
-        modifiedSubspaces[prevIndice]
-            .tags
-            ?.removeWhere((t) => t.internalId == tag.internalId);
-        continue;
-      }
-
-      if ((tag.location != 'Main Space' && tag.location != null) &&
-          prevIndice == null) {
-        final newIndex = modifiedSubspaces
-            .indexWhere((subspace) => subspace.subspaceName == tag.location);
-        if (newIndex != -1) {
-          if (modifiedSubspaces[newIndex]
-                  .tags
-                  ?.any((t) => t.internalId == tag.internalId) !=
-              true) {
-            tag.location = modifiedSubspaces[newIndex].subspaceName;
-            modifiedSubspaces[newIndex].tags?.add(tag);
-          }
-        }
-        modifiedTags.removeWhere((t) => t.internalId == tag.internalId);
-        continue;
-      }
-
-      if ((tag.location != 'Main Space' && tag.location != null) &&
-          tag.location != modifiedSubspaces[prevIndice!].subspaceName) {
-        modifiedSubspaces[prevIndice]
-            .tags
-            ?.removeWhere((t) => t.internalId == tag.internalId);
-        final newIndex = modifiedSubspaces
-            .indexWhere((subspace) => subspace.subspaceName == tag.location);
-        if (newIndex != -1) {
-          if (modifiedSubspaces[newIndex]
-                  .tags
-                  ?.any((t) => t.internalId == tag.internalId) !=
-              true) {
-            tag.location = modifiedSubspaces[newIndex].subspaceName;
-            modifiedSubspaces[newIndex].tags?.add(tag);
-          }
-        }
-
-        modifiedTags.removeWhere((t) => t.internalId == tag.internalId);
-        continue;
-      }
-
-      if ((tag.location != 'Main Space' && tag.location != null) &&
-          tag.location == modifiedSubspaces[prevIndice!].subspaceName) {
-        modifiedTags.removeWhere((t) => t.internalId == tag.internalId);
-        continue;
-      }
-
-      if ((tag.location == 'Main Space' || tag.location == null) &&
-          prevIndice != null) {
-        modifiedSubspaces[prevIndice]
-            .tags
-            ?.removeWhere((t) => t.internalId == tag.internalId);
-      }
-    }
-
-    return {
-      'updatedTags': modifiedTags,
-      'subspaces': modifiedSubspaces,
-    };
-  }
-
-  int? checkTagExistInSubspace(Tag tag, List<SubspaceModel>? subspaces) {
     if (subspaces == null) return null;
     for (int i = 0; i < subspaces.length; i++) {
       final subspace = subspaces[i];

lib/pages/spaces_management/assign_tag_models/views/assign_tag_models_dialog.dart

@@ -133,7 +133,8 @@ class AssignTagModelsDialog extends StatelessWidget {
                                 : List.generate(state.tags.length, (index) {
                                     final tag = state.tags[index];
                                     final controller = controllers[index];
-                                    final availableTags = getAvailableTags(
+                                    final availableTags =
+                                        TagHelper.getAvailableTagModels(
                                             allTags ?? [], state.tags, tag);
 
                                     return DataRow(
@@ -254,11 +255,15 @@ class AssignTagModelsDialog extends StatelessWidget {
                                 final updatedTags =
                                     List<TagModel>.from(state.tags);
                                 final result =
-                                    processTags(updatedTags, subspaces);
+                                    TagHelper.updateSubspaceTagModels(
+                                        updatedTags, subspaces);
 
                                 final processedTags =
                                     result['updatedTags'] as List<TagModel>;
-                                final processedSubspaces = result['subspaces'];
+                                final processedSubspaces =
+                                    List<SubspaceTemplateModel>.from(
+                                        result['subspaces'] as List<dynamic>);
+
                                 if (context.mounted) {
                                   Navigator.of(context).pop();
 
@@ -305,14 +310,17 @@ class AssignTagModelsDialog extends StatelessWidget {
                                 ? () async {
                                     final updatedTags =
                                         List<TagModel>.from(state.tags);
+
                                     final result =
-                                        processTags(updatedTags, subspaces);
+                                        TagHelper.updateSubspaceTagModels(
+                                            updatedTags, subspaces);
 
                                     final processedTags =
                                         result['updatedTags'] as List<TagModel>;
                                     final processedSubspaces =
+                                        List<SubspaceTemplateModel>.from(
                                             result['subspaces']
-                                            as List<SubspaceTemplateModel>;
+                                                as List<dynamic>);
 
                                     Navigator.of(context)
                                         .popUntil((route) => route.isFirst);
@@ -356,120 +364,4 @@ class AssignTagModelsDialog extends StatelessWidget {
           ),
         ));
   }
-
-  List<String> getAvailableTags(
-      List<String> allTags, List<TagModel> currentTags, TagModel currentTag) {
-    return allTags
-        .where((tagValue) => !currentTags
-            .where((e) => e != currentTag) // Exclude the current row
-            .map((e) => e.tag)
-            .contains(tagValue))
-        .toList();
-  }
-
-  int? checkTagExistInSubspace(
-      TagModel tag, List<SubspaceTemplateModel>? subspaces) {
-    if (subspaces == null) return null;
-    for (int i = 0; i < subspaces.length; i++) {
-      final subspace = subspaces[i];
-      if (subspace.tags == null) continue;
-      for (var t in subspace.tags!) {
-        if (tag.internalId == t.internalId) {
-          return i;
-        }
-      }
-    }
-    return null;
-  }
-
-  Map<String, dynamic> processTags(
-      List<TagModel> updatedTags, List<SubspaceTemplateModel>? subspaces) {
-    final modifiedTags = List<TagModel>.from(updatedTags);
-    final modifiedSubspaces = List<SubspaceTemplateModel>.from(subspaces ?? []);
-
-    if (subspaces != null) {
-      for (var subspace in subspaces) {
-        subspace.tags?.removeWhere(
-          (tag) => !modifiedTags
-              .any((updatedTag) => updatedTag.internalId == tag.internalId),
-        );
-      }
-    }
-
-    for (var tag in modifiedTags.toList()) {
-      if (modifiedSubspaces.isEmpty) continue;
-
-      final prevIndice = checkTagExistInSubspace(tag, modifiedSubspaces);
-
-      if ((tag.location == 'Main Space' || tag.location == null) &&
-          (prevIndice == null ||
-              modifiedSubspaces[prevIndice].subspaceName == 'Main Space')) {
-        continue;
-      }
-
-      if ((tag.location == 'Main Space' || tag.location == null) &&
-          prevIndice != null) {
-        modifiedSubspaces[prevIndice]
-            .tags
-            ?.removeWhere((t) => t.internalId == tag.internalId);
-        continue;
-      }
-
-      if ((tag.location != 'Main Space' && tag.location != null) &&
-          prevIndice == null) {
-        final newIndex = modifiedSubspaces
-            .indexWhere((subspace) => subspace.subspaceName == tag.location);
-        if (newIndex != -1) {
-          if (modifiedSubspaces[newIndex]
-                  .tags
-                  ?.any((t) => t.internalId == tag.internalId) !=
-              true) {
-            tag.location = modifiedSubspaces[newIndex].subspaceName;
-            modifiedSubspaces[newIndex].tags?.add(tag);
-          }
-        }
-        modifiedTags.removeWhere((t) => t.internalId == tag.internalId);
-        continue;
-      }
-
-      if ((tag.location != 'Main Space' && tag.location != null) &&
-          tag.location != modifiedSubspaces[prevIndice!].subspaceName) {
-        modifiedSubspaces[prevIndice]
-            .tags
-            ?.removeWhere((t) => t.internalId == tag.internalId);
-        final newIndex = modifiedSubspaces
-            .indexWhere((subspace) => subspace.subspaceName == tag.location);
-        if (newIndex != -1) {
-          if (modifiedSubspaces[newIndex]
-                  .tags
-                  ?.any((t) => t.internalId == tag.internalId) !=
-              true) {
-            tag.location = modifiedSubspaces[newIndex].subspaceName;
-            modifiedSubspaces[newIndex].tags?.add(tag);
-          }
-        }
-
-        modifiedTags.removeWhere((t) => t.internalId == tag.internalId);
-        continue;
-      }
-
-      if ((tag.location != 'Main Space' && tag.location != null) &&
-          tag.location == modifiedSubspaces[prevIndice!].subspaceName) {
-        modifiedTags.removeWhere((t) => t.internalId == tag.internalId);
-        continue;
-      }
-
-      if ((tag.location == 'Main Space' || tag.location == null) &&
-          prevIndice != null) {
-        modifiedSubspaces[prevIndice]
-            .tags
-            ?.removeWhere((t) => t.internalId == tag.internalId);
-      }
-    }
-
-    return {
-      'updatedTags': modifiedTags,
-      'subspaces': modifiedSubspaces,
-    };
-  }
 }

lib/pages/spaces_management/helper/tag_helper.dart

@@ -7,6 +7,138 @@ import 'package:syncrow_web/pages/spaces_management/space_model/models/subspace_
 import 'package:syncrow_web/pages/spaces_management/space_model/models/tag_model.dart';
 
 class TagHelper {
+  static Map<String, dynamic> updateTags<T>({
+    required List<T> updatedTags,
+    required List<dynamic>? subspaces,
+    required String Function(T) getInternalId,
+    required String? Function(T) getLocation,
+    required void Function(T, String) setLocation,
+    required String Function(dynamic) getSubspaceName,
+    required List<T>? Function(dynamic) getSubspaceTags,
+    required void Function(dynamic, List<T>?) setSubspaceTags,
+    required int? Function(T, List<dynamic>) checkTagExistInSubspace,
+  }) {
+    final modifiedTags = List<T>.from(updatedTags);
+    final modifiedSubspaces = List<dynamic>.from(subspaces ?? []);
+
+    if (subspaces != null) {
+      for (var subspace in subspaces) {
+        getSubspaceTags(subspace)?.removeWhere(
+          (tag) => !modifiedTags.any(
+              (updatedTag) => getInternalId(updatedTag) == getInternalId(tag)),
+        );
+      }
+    }
+
+    for (var tag in modifiedTags.toList()) {
+      if (modifiedSubspaces.isEmpty) continue;
+
+      final prevIndice = checkTagExistInSubspace(tag, modifiedSubspaces);
+      final tagLocation = getLocation(tag);
+
+      if ((tagLocation == 'Main Space' || tagLocation == null) &&
+          (prevIndice == null ||
+              getSubspaceName(modifiedSubspaces[prevIndice]) == 'Main Space')) {
+        continue;
+      }
+
+      if ((tagLocation == 'Main Space' || tagLocation == null) &&
+          prevIndice != null) {
+        getSubspaceTags(modifiedSubspaces[prevIndice])
+            ?.removeWhere((t) => getInternalId(t) == getInternalId(tag));
+        continue;
+      }
+
+      if ((tagLocation != 'Main Space' && tagLocation != null) &&
+          prevIndice == null) {
+        final newIndex = modifiedSubspaces
+            .indexWhere((subspace) => getSubspaceName(subspace) == tagLocation);
+
+        if (newIndex != -1) {
+          if (getSubspaceTags(modifiedSubspaces[newIndex])
+                  ?.any((t) => getInternalId(t) == getInternalId(tag)) !=
+              true) {
+            setLocation(tag, getSubspaceName(modifiedSubspaces[newIndex]));
+            final subspaceTags =
+                getSubspaceTags(modifiedSubspaces[newIndex]) ?? [];
+            subspaceTags.add(tag);
+            setSubspaceTags(modifiedSubspaces[newIndex], subspaceTags);
+          }
+        }
+
+        modifiedTags.removeWhere((t) => getInternalId(t) == getInternalId(tag));
+        continue;
+      }
+
+      if ((tagLocation != 'Main Space' && tagLocation != null) &&
+          tagLocation != getSubspaceName(modifiedSubspaces[prevIndice!])) {
+        getSubspaceTags(modifiedSubspaces[prevIndice])
+            ?.removeWhere((t) => getInternalId(t) == getInternalId(tag));
+
+        final newIndex = modifiedSubspaces
+            .indexWhere((subspace) => getSubspaceName(subspace) == tagLocation);
+
+        if (newIndex != -1) {
+          if (getSubspaceTags(modifiedSubspaces[newIndex])
+                  ?.any((t) => getInternalId(t) == getInternalId(tag)) !=
+              true) {
+            setLocation(tag, getSubspaceName(modifiedSubspaces[newIndex]));
+            final subspaceTags =
+                getSubspaceTags(modifiedSubspaces[newIndex]) ?? [];
+            subspaceTags.add(tag);
+            setSubspaceTags(modifiedSubspaces[newIndex], subspaceTags);
+          }
+        }
+
+        modifiedTags.removeWhere((t) => getInternalId(t) == getInternalId(tag));
+        continue;
+      }
+
+      if ((tagLocation != 'Main Space' && tagLocation != null) &&
+          tagLocation == getSubspaceName(modifiedSubspaces[prevIndice!])) {
+        modifiedTags.removeWhere((t) => getInternalId(t) == getInternalId(tag));
+        continue;
+      }
+
+      if ((tagLocation == 'Main Space' || tagLocation == null) &&
+          prevIndice != null) {
+        getSubspaceTags(modifiedSubspaces[prevIndice])
+            ?.removeWhere((t) => getInternalId(t) == getInternalId(tag));
+      }
+    }
+
+    return {
+      'updatedTags': modifiedTags,
+      'subspaces': modifiedSubspaces,
+    };
+  }
+
+  static List<String> getAvailableTags<T>({
+    required List<String> allTags,
+    required List<T> currentTags,
+    required T currentTag,
+    required String? Function(T) getTag, // Allow nullable return type
+  }) {
+    return allTags
+        .where((tagValue) => !currentTags
+            .where((e) => e != currentTag) // Exclude the current row
+            .map((e) => getTag(e) ?? '') // Handle null values gracefully
+            .contains(tagValue))
+        .toList();
+  }
+
+  static List<String> getAvailableTagModels(
+      List<String> allTags, List<TagModel> currentTags, TagModel currentTag) {
+    List<String> availableTagsForTagModel =
+        TagHelper.getAvailableTags<TagModel>(
+      allTags: allTags,
+      currentTags: currentTags,
+      currentTag: currentTag,
+      getTag: (tag) => tag.tag ?? '',
+    );
+    return availableTagsForTagModel;
+  }
+
   static List<TagModel> generateInitialTags({
     List<TagModel>? spaceTagModels,
     List<SubspaceTemplateModel>? subspaces,
@@ -145,4 +277,35 @@ class TagHelper {
             ))
         .toList();
   }
+
+  static int? checkTagExistInSubspaceModels(TagModel tag, List<dynamic>? subspaces) {
+    if (subspaces == null) return null;
+
+    for (int i = 0; i < subspaces.length; i++) {
+      final subspace = subspaces[i] as SubspaceTemplateModel; // Explicit cast
+      if (subspace.tags == null) continue;
+      for (var t in subspace.tags!) {
+        if (tag.internalId == t.internalId) {
+          return i;
+        }
+      }
+    }
+    return null;
+  }
+
+    static Map<String, dynamic> updateSubspaceTagModels(
+      List<TagModel> updatedTags, List<SubspaceTemplateModel>? subspaces) {
+    return TagHelper.updateTags<TagModel>(
+      updatedTags: updatedTags,
+      subspaces: subspaces,
+      getInternalId: (tag) => tag.internalId,
+      getLocation: (tag) => tag.location,
+      setLocation: (tag, location) => tag.location = location,
+      getSubspaceName: (subspace) => subspace.subspaceName,
+      getSubspaceTags: (subspace) => subspace.tags,
+      setSubspaceTags: (subspace, tags) => subspace.tags = tags,
+      checkTagExistInSubspace: checkTagExistInSubspaceModels,
+    );
+  }
+
 }

lib/pages/spaces_management/space_model/widgets/dialog/create_space_model_dialog.dart

@@ -129,10 +129,16 @@ class CreateSpaceModelDialog extends StatelessWidget {
                     const SizedBox(height: 16),
                     SubspaceModelCreate(
                       subspaces: state.space.subspaceModels ?? [],
-                      onSpaceModelUpdate: (updatedSubspaces) {
+                      tags: state.space.tags ?? [],
+                      onSpaceModelUpdate: (updatedSubspaces,updatedTags) {
                         context
                             .read<CreateSpaceModelBloc>()
                             .add(AddSubspacesToSpaceTemplate(updatedSubspaces));
+                        if(updatedTags!=null){
+                          context
+                            .read<CreateSpaceModelBloc>()
+                            .add(AddTagsToSpaceTemplate(updatedTags));
+                        }
                       },
                     ),
                     const SizedBox(height: 10),

lib/pages/spaces_management/space_model/widgets/subspace_model_create_widget.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:syncrow_web/common/edit_chip.dart';
 import 'package:syncrow_web/pages/spaces_management/space_model/models/subspace_template_model.dart';
+import 'package:syncrow_web/pages/spaces_management/space_model/models/tag_model.dart';
 import 'package:syncrow_web/pages/spaces_management/space_model/widgets/button_content_widget.dart';
 import 'package:syncrow_web/pages/spaces_management/create_subspace_model/views/create_subspace_model_dialog.dart';
 import 'package:syncrow_web/pages/spaces_management/space_model/widgets/subspace_name_label_widget.dart';
@@ -8,13 +9,16 @@ import 'package:syncrow_web/utils/color_manager.dart';
 
 class SubspaceModelCreate extends StatefulWidget {
   final List<SubspaceTemplateModel> subspaces;
-  final void Function(List<SubspaceTemplateModel> newSubspaces)?
+  final void Function(
+          List<SubspaceTemplateModel> newSubspaces, List<TagModel>? tags)?
       onSpaceModelUpdate;
+  final List<TagModel> tags;
 
   const SubspaceModelCreate({
     Key? key,
     required this.subspaces,
     this.onSpaceModelUpdate,
+    required this.tags,
   }) : super(key: key);
 
   @override
@@ -24,11 +28,13 @@ class SubspaceModelCreate extends StatefulWidget {
 class _SubspaceModelCreateState extends State<SubspaceModelCreate> {
   late List<SubspaceTemplateModel> _subspaces;
   String? errorSubspaceId;
+  late List<TagModel> _tags;
 
   @override
   void initState() {
     super.initState();
     _subspaces = List.from(widget.subspaces);
+    _tags = List.from(widget.tags);
   }
 
   @override
@@ -105,14 +111,26 @@ class _SubspaceModelCreateState extends State<SubspaceModelCreate> {
           isEdit: true,
           dialogTitle: dialogTitle,
           existingSubSpaces: _subspaces,
-          
           onUpdate: (subspaceModels) {
+            final updatedIds = subspaceModels.map((s) => s.internalId).toSet();
+            final deletedSubspaces = _subspaces
+                .where((s) => !updatedIds.contains(s.internalId))
+                .toList();
+
+            final List<TagModel> tagsToAppendToSpace = [];
+
+            for (var s in deletedSubspaces) {
+              if (s.tags != null) {
+                tagsToAppendToSpace.addAll(s.tags!);
+              }
+            }
+
             setState(() {
               _subspaces = subspaceModels;
-              errorSubspaceId = null;
+              _tags.addAll(tagsToAppendToSpace);
             });
             if (widget.onSpaceModelUpdate != null) {
-              widget.onSpaceModelUpdate!(subspaceModels);
+              widget.onSpaceModelUpdate!(subspaceModels, _tags);
             }
           },
         );

lib/pages/spaces_management/space_model/widgets/subspace_name_label_widget.dart

@@ -52,6 +52,13 @@ class _SubspaceNameDisplayWidgetState extends State<SubspaceNameDisplayWidget> {
 
   void _handleValidationAndSave() {
     final updatedName = _controller.text;
+
+    if (updatedName.isEmpty) {
+      setState(() {
+        errorText = 'Subspace name cannot be empty.';
+      });
+      return;
+    }
     if (widget.validateName(updatedName)) {
       setState(() {
         errorText = null;