finished adding tasks and removing them , added error handling

lib/features/scene/model/scene_static_function.dart

@@ -1,51 +1,65 @@
 import 'dart:convert';
 
 import 'package:flutter/foundation.dart';
+import 'package:uuid/uuid.dart';
 
 class SceneStaticFunction {
   final String icon;
-  final String name;
+  final String deviceName;
   final String code;
-  final List<StaticFunctionOperationHelper> operationalValues;
+  final List<SceneOperationalValue> operationalValues;
+  final String deviceId;
+  final String operationName;
+  final String uniqueCustomId;
 
   SceneStaticFunction({
     required this.icon,
-    required this.name,
+    required this.deviceName,
     required this.code,
     required this.operationalValues,
-  });
+    required this.deviceId,
+    required this.operationName,
+  }) : uniqueCustomId = const Uuid().v4();
 
   SceneStaticFunction copyWith({
     String? icon,
     String? name,
     String? code,
-    List<StaticFunctionOperationHelper>? operationalValues,
+    List<SceneOperationalValue>? operationalValues,
+    String? deviceId,
+    String? operationName,
   }) {
     return SceneStaticFunction(
       icon: icon ?? this.icon,
-      name: name ?? this.name,
+      deviceName: name ?? this.deviceName,
       code: code ?? this.code,
       operationalValues: operationalValues ?? this.operationalValues,
+      deviceId: deviceId ?? this.deviceId,
+      operationName: operationName ?? this.operationName,
     );
   }
 
   Map<String, dynamic> toMap() {
     return {
       'icon': icon,
-      'name': name,
+      'name': deviceName,
       'code': code,
       'operationalValues': operationalValues.map((x) => x.toMap()).toList(),
+      'deviceId': deviceId,
+      'operationName': operationName
     };
   }
 
   factory SceneStaticFunction.fromMap(Map<String, dynamic> map) {
     return SceneStaticFunction(
       icon: map['icon'] ?? '',
-      name: map['name'] ?? '',
+      deviceName: map['name'] ?? '',
       code: map['code'] ?? '',
-      operationalValues: List<StaticFunctionOperationHelper>.from(
-          map['operationalValues']
-              ?.map((x) => StaticFunctionOperationHelper.fromMap(x))),
+      operationalValues: List<SceneOperationalValue>.from(
+        map['operationalValues']?.map((x) => SceneOperationalValue.fromMap(x)),
+      ),
+      deviceId: map['deviceId'] ?? '',
+      operationName: map['operationName'] ?? '',
     );
   }
 
@@ -56,7 +70,7 @@ class SceneStaticFunction {
 
   @override
   String toString() {
-    return 'SceneStaticFunction(icon: $icon, name: $name, code: $code, operationalValues: $operationalValues)';
+    return 'SceneStaticFunction(icon: $icon, name: $deviceName, code: $code, operationalValues: $operationalValues, deviceId: $deviceId,  operationName: $operationName)';
   }
 
   @override
@@ -65,34 +79,38 @@ class SceneStaticFunction {
 
     return other is SceneStaticFunction &&
         other.icon == icon &&
-        other.name == name &&
+        other.deviceName == deviceName &&
         other.code == code &&
-        listEquals(other.operationalValues, operationalValues);
+        other.operationName == operationName &&
+        listEquals(other.operationalValues, operationalValues) &&
+        other.deviceId == deviceId;
   }
 
   @override
   int get hashCode {
     return icon.hashCode ^
-        name.hashCode ^
+        deviceName.hashCode ^
         code.hashCode ^
+        deviceId.hashCode ^
+        operationName.hashCode ^
         operationalValues.hashCode;
   }
 }
 
-class StaticFunctionOperationHelper {
+class SceneOperationalValue {
   final String icon;
   final String value;
 
-  StaticFunctionOperationHelper({
+  SceneOperationalValue({
     required this.icon,
     required this.value,
   });
 
-  StaticFunctionOperationHelper copyWith({
+  SceneOperationalValue copyWith({
     String? icon,
     String? value,
   }) {
-    return StaticFunctionOperationHelper(
+    return SceneOperationalValue(
       icon: icon ?? this.icon,
       value: value ?? this.value,
     );
@@ -105,8 +123,8 @@ class StaticFunctionOperationHelper {
     };
   }
 
-  factory StaticFunctionOperationHelper.fromMap(Map<String, dynamic> map) {
-    return StaticFunctionOperationHelper(
+  factory SceneOperationalValue.fromMap(Map<String, dynamic> map) {
+    return SceneOperationalValue(
       icon: map['icon'] ?? '',
       value: map['value'] ?? '',
     );
@@ -114,8 +132,8 @@ class StaticFunctionOperationHelper {
 
   String toJson() => json.encode(toMap());
 
-  factory StaticFunctionOperationHelper.fromJson(String source) =>
-      StaticFunctionOperationHelper.fromMap(json.decode(source));
+  factory SceneOperationalValue.fromJson(String source) =>
+      SceneOperationalValue.fromMap(json.decode(source));
 
   @override
   String toString() =>
@@ -125,7 +143,7 @@ class StaticFunctionOperationHelper {
   bool operator ==(Object other) {
     if (identical(this, other)) return true;
 
-    return other is StaticFunctionOperationHelper &&
+    return other is SceneOperationalValue &&
         other.icon == icon &&
         other.value == value;
   }