fix

lib/presentation/state/top_up_state.dart

@@ -1,40 +1,55 @@
 import 'package:be_happy/domain/entities/certificate.dart';
 import 'package:be_happy/domain/entities/payment_card.dart';
 
-import '../../domain/entities/top_up_tariff.dart';
+sealed class TopUpState {
+  const TopUpState();
+}
 
-class TopUpState {
+class TopUpLoading extends TopUpState {
+  const TopUpLoading();
+}
+
+class TopUpLoaded extends TopUpState {
   final List<Certificate> certificates;
   final List<PaymentCard> cards;
   final Certificate? selectedTariff;
   final PaymentCard? selectedCard;
-  final bool isLoading;
   final bool isAgreed;
+  final bool isProcessingPayment;
 
-  TopUpState({
+  const TopUpLoaded({
     this.certificates = const [],
     this.cards = const [],
     this.selectedTariff,
     this.selectedCard,
-    this.isLoading = false,
     this.isAgreed = false,
+    this.isProcessingPayment = false,
   });
 
-  TopUpState copyWith({
+  TopUpLoaded copyWith({
     List<Certificate>? certificates,
     List<PaymentCard>? cards,
     Certificate? selectedTariff,
     PaymentCard? selectedCard,
-    bool? isLoading,
     bool? isAgreed,
+    bool? isProcessingPayment,
   }) {
-    return TopUpState(
+    return TopUpLoaded(
       certificates: certificates ?? this.certificates,
       cards: cards ?? this.cards,
       selectedTariff: selectedTariff ?? this.selectedTariff,
       selectedCard: selectedCard ?? this.selectedCard,
-      isLoading: isLoading ?? this.isLoading,
       isAgreed: isAgreed ?? this.isAgreed,
+      isProcessingPayment: isProcessingPayment ?? this.isProcessingPayment,
     );
   }
+}
+
+class TopUpPaymentSuccess extends TopUpState {
+  const TopUpPaymentSuccess();
+}
+
+class TopUpPaymentFailure extends TopUpState {
+  final String errorMessage;
+  const TopUpPaymentFailure(this.errorMessage);
 }