added empty name validation

lib/pages/spaces_management/space_model/bloc/create_space_model_bloc.dart

@@ -59,18 +59,6 @@ class CreateSpaceModelBloc
       emit(CreateSpaceModelLoaded(_space!));
     });
 
-    on<UpdateSpaceTemplateName>((event, emit) {
-      final currentState = state;
-
-      if (currentState is CreateSpaceModelLoaded) {
-        final updatedSpaceModel =
-            currentState.space.copyWith(modelName: event.name);
-        emit(CreateSpaceModelLoaded(updatedSpaceModel));
-      } else {
-        emit(CreateSpaceModelError("Space template not initialized"));
-      }
-    });
-
     on<AddSubspacesToSpaceTemplate>((event, emit) {
       final currentState = state;
 
@@ -86,5 +74,31 @@ class CreateSpaceModelBloc
         emit(CreateSpaceModelError("Space template not initialized"));
       }
     });
+
+    on<UpdateSpaceTemplateName>((event, emit) {
+      final currentState = state;
+      print('Current State: $currentState');
+      if (currentState is CreateSpaceModelLoaded) {
+        if (event.name.trim().isEmpty) {
+          print("set error message");
+
+          emit(CreateSpaceModelLoaded(
+            currentState.space,
+            errorMessage: "Model name cannot be empty",
+          ));
+                    print('State emitted: CreateSpaceModelLoaded with updated model:');
+
+        } else {
+          final updatedSpaceModel =
+              currentState.space.copyWith(modelName: event.name);
+          print(
+              'State emitted: CreateSpaceModelLoaded with updated model: $updatedSpaceModel');
+
+          emit(CreateSpaceModelLoaded(updatedSpaceModel));
+        }
+      } else {
+        emit(CreateSpaceModelError("Space template not initialized"));
+      }
+    });
   }
 }

lib/pages/spaces_management/space_model/bloc/create_space_model_event.dart

@@ -42,3 +42,9 @@ class AddSubspacesToSpaceTemplate extends CreateSpaceModelEvent {
 
   AddSubspacesToSpaceTemplate(this.subspaces);
 }
+
+class ValidateSpaceTemplateName extends CreateSpaceModelEvent {
+  final String name;
+
+  ValidateSpaceTemplateName({required this.name});
+}

lib/pages/spaces_management/space_model/bloc/create_space_model_state.dart

@@ -5,7 +5,7 @@ abstract class CreateSpaceModelState extends Equatable {
   const CreateSpaceModelState();
 
   @override
-  List<Object> get props => [];
+  List<Object?> get props => [];
 }
 
 class CreateSpaceModelInitial extends CreateSpaceModelState {}
@@ -14,8 +14,12 @@ class CreateSpaceModelLoading extends CreateSpaceModelState {}
 
 class CreateSpaceModelLoaded extends CreateSpaceModelState {
   final SpaceTemplateModel space;
+  final String? errorMessage;
 
-  CreateSpaceModelLoaded(this.space);
+  CreateSpaceModelLoaded(this.space, {this.errorMessage});
+
+  @override
+  List<Object?> get props => [space, errorMessage];
 }
 
 class CreateSpaceModelError extends CreateSpaceModelState {

lib/pages/spaces_management/space_model/models/space_template_model.dart

@@ -34,9 +34,10 @@ class SpaceTemplateModel extends Equatable {
               ?.map((e) => SubspaceTemplateModel.fromJson(e))
               .toList() ??
           [],
-      tags: (json['tags'] as List)
+      tags: (json['tags'] as List<dynamic>?)
-          .map((item) => TagModel.fromJson(item))
+              ?.map((item) => TagModel.fromJson(item))
-          .toList(),
+              .toList() ??
+          [],
     );
   }
 

lib/pages/spaces_management/space_model/models/subspace_template_model.dart

@@ -18,9 +18,10 @@ class SubspaceTemplateModel {
       uuid: json['uuid'] ?? '',
       subspaceName: json['subspaceName'] ?? '',
       disabled: json['disabled'] ?? false,
-      tags: (json['tags'] as List)
+      tags: (json['tags'] as List<dynamic>?)
-          .map((item) => TagModel.fromJson(item))
+              ?.map((item) => TagModel.fromJson(item))
-          .toList(),
+              .toList() ??
+          [],
     );
   }
 

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

@@ -61,6 +61,7 @@ class CreateSpaceModelDialog extends StatelessWidget {
               } else if (state is CreateSpaceModelLoaded) {
                 final updatedSpaceModel = state.space;
                 final subspaces = updatedSpaceModel.subspaceModels ?? [];
+                final isNameValid = spaceNameController.text.trim().isNotEmpty;
 
                 return Column(
                   mainAxisSize: MainAxisSize.min,
@@ -87,6 +88,7 @@ class CreateSpaceModelDialog extends StatelessWidget {
                           filled: true,
                           fillColor: ColorsManager.textFieldGreyColor,
                           hintText: 'Please enter the name',
+                          errorText: state.errorMessage,
                           hintStyle: const TextStyle(
                               color: ColorsManager.lightGrayColor),
                           border: OutlineInputBorder(
@@ -130,19 +132,26 @@ class CreateSpaceModelDialog extends StatelessWidget {
                           const SizedBox(width: 10),
                           Expanded(
                             child: DefaultButton(
-                              onPressed: () {
+                              onPressed: state.errorMessage == null ||
-                                final updatedSpaceTemplate =
+                                      isNameValid
-                                    updatedSpaceModel.copyWith(
+                                  ? () {
-                                  modelName: spaceNameController.text.trim(),
+                                      final updatedSpaceTemplate =
-                                );
+                                          updatedSpaceModel.copyWith(
-                                context.read<CreateSpaceModelBloc>().add(
+                                        modelName:
-                                      CreateSpaceTemplate(
+                                            spaceNameController.text.trim(),
-                                          spaceTemplate: updatedSpaceTemplate),
+                                      );
-                                    );
+                                      context.read<CreateSpaceModelBloc>().add(
-                              },
+                                            CreateSpaceTemplate(
+                                                spaceTemplate:
+                                                    updatedSpaceTemplate),
+                                          );
+                                    }
+                                  : null,
                               backgroundColor: ColorsManager.secondaryColor,
                               borderRadius: 10,
-                              foregroundColor: ColorsManager.whiteColors,
+                              foregroundColor: isNameValid
+                                  ? ColorsManager.whiteColors
+                                  : ColorsManager.whiteColorsWithOpacity,
                               child: const Text('OK'),
                             ),
                           ),
@@ -158,7 +167,6 @@ class CreateSpaceModelDialog extends StatelessWidget {
                 );
               }
 
-              // Default case (e.g., CreateSpaceModelInitial)
               return const Center(child: Text('Initializing...'));
             },
           ),

lib/utils/color_manager.dart

@@ -5,8 +5,11 @@ abstract class ColorsManager {
   static const Color switchOffColor = Color(0x7F8D99AE);
   static const Color primaryColor = Color(0xFF0030CB); //023DFE
   static const Color secondaryTextColor = Color(0xFF848484);
-  static Color primaryColorWithOpacity = const Color(0xFF023DFE).withOpacity(0.6);
+  static Color primaryColorWithOpacity =
+      const Color(0xFF023DFE).withOpacity(0.6);
   static const Color whiteColors = Colors.white;
+  static Color whiteColorsWithOpacity = Colors.white.withOpacity(0.6);
+
   static const Color secondaryColor = Color(0xFF023DFE);
   static const Color onSecondaryColor = Color(0xFF023DFE);
   static Color shadowBlackColor = Colors.black.withOpacity(0.2);