new project stable version

lib/presentation/viewmodel/payment_method_sheet_bloc.dart

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+import 'package:flutter_bloc/flutter_bloc.dart';
+
+import '../../core/result.dart';
+import '../../domain/entities/payment_card.dart';
+import '../../domain/usecase/get_payment_cards_usecase.dart';
+import '../event/payment_method_sheet_event.dart';
+import '../state/payment_method_sheet_state.dart';
+
+class PaymentMethodSheetBloc extends Bloc<PaymentMethodSheetEvent, PaymentMethodSheetState> {
+  final GetPaymentCardsUsecase _getPaymentCardsUsecase;
+
+  PaymentMethodSheetBloc(this._getPaymentCardsUsecase)
+      : super(PaymentMethodSheetState(status: PaymentMethodSheetStatus.initial)) {
+    on<PaymentMethodSheetStarted>(_onStarted);
+  }
+
+  Future<void> _onStarted(
+    PaymentMethodSheetStarted event,
+    Emitter<PaymentMethodSheetState> emit,
+  ) async {
+    emit(state.copyWith(status: PaymentMethodSheetStatus.loading));
+
+    try {
+      final result = await _getPaymentCardsUsecase();
+
+      if (result is Success<List<PaymentCard>>) {
+        emit(state.copyWith(
+          status: PaymentMethodSheetStatus.success,
+          cards: result.data ?? [],
+        ));
+      } else {
+        emit(state.copyWith(
+          status: PaymentMethodSheetStatus.failure,
+          errorMessage: 'Failed to load payment cards',
+        ));
+      }
+    } catch (e) {
+      emit(state.copyWith(
+        status: PaymentMethodSheetStatus.failure,
+        errorMessage: e.toString(),
+      ));
+    }
+  }
+}