new project stable version

lib/presentation/viewmodel/add_card_bloc.dart

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+import 'package:flutter_bloc/flutter_bloc.dart';
+import '../../domain/usecase/add_payment_card_usecase.dart';
+import '../event/add_card_event.dart';
+import '../state/add_card_state.dart';
+
+// 🔹 Импорты для Result и Failure
+import '../../core/result.dart';
+import '../../core/failures.dart';
+
+class AddCardBloc extends Bloc<AddCardEvent, AddCardState> {
+  final AddPaymentCardUsecase addPaymentCardUsecase;
+
+  AddCardBloc(this.addPaymentCardUsecase) : super(const AddCardState()) {
+    on<CardNumberChanged>(_onCardNumberChanged);
+    on<ExpiryDateChanged>(_onExpiryDateChanged);
+    on<CvvChanged>(_onCvvChanged);
+    on<CardHolderChanged>(_onCardHolderChanged);
+    on<AddCardSubmitted>(_onAddCardSubmitted);
+  }
+
+  void _onCardNumberChanged(CardNumberChanged event, Emitter<AddCardState> emit) {
+    final formatted = _formatCardNumber(event.cardNumber);
+    emit(state.copyWith(cardNumber: formatted));
+  }
+
+  void _onExpiryDateChanged(ExpiryDateChanged event, Emitter<AddCardState> emit) {
+    final formatted = _formatExpiryDate(event.expiryDate);
+    emit(state.copyWith(expiryDate: formatted));
+  }
+
+  void _onCvvChanged(CvvChanged event, Emitter<AddCardState> emit) {
+    final formatted = event.cvv.replaceAll(RegExp(r'\D'), '').substring(0, 3);
+    emit(state.copyWith(cvv: formatted));
+  }
+
+  void _onCardHolderChanged(CardHolderChanged event, Emitter<AddCardState> emit) {
+    emit(state.copyWith(cardHolder: event.cardHolder));
+  }
+
+  Future<void> _onAddCardSubmitted(AddCardSubmitted event, Emitter<AddCardState> emit) async {
+    if (state.cardNumber.isEmpty || state.expiryDate.isEmpty) return;
+
+    emit(state.copyWith(status: AddCardStatus.loading));
+
+    final expiryParts = state.expiryDate.split('/'); // Используем state
+    if (expiryParts.length != 2) {
+      emit(state.copyWith(
+        status: AddCardStatus.failure,
+        errorMessage: 'Неверный формат даты',
+      ));
+      return;
+    }
+
+    final result = await addPaymentCardUsecase(
+      cardNumber: state.cardNumber.replaceAll(' ', ''),
+      expiryMonth: expiryParts[0],
+      expiryYear: expiryParts[1],
+      cardHolder: state.cardHolder.trim(),
+      cvv: state.cvv,
+    );
+
+    if (result is Success) {
+      emit(state.copyWith(status: AddCardStatus.success));
+    } else if (result is Failure) {
+      final failure = result.failure;
+
+      String errorMessage = 'Ошибка добавления карты';
+
+      if (failure is AuthFailure) {
+        errorMessage = 'Неверные данные карты';
+      } else if (failure is AuthBlockFailure) {
+        errorMessage = 'Доступ заблокирован';
+      } else if (failure is UnknownFailure) {
+        errorMessage = failure.message ?? 'Неизвестная ошибка';
+      }
+
+      emit(state.copyWith(
+        status: AddCardStatus.failure,
+        errorMessage: errorMessage,
+      ));
+    }
+  }
+
+  String _formatCardNumber(String value) {
+    final cleaned = value.replaceAll(RegExp(r'\D'), '');
+    final limited = cleaned.substring(0, cleaned.length > 16 ? 16 : cleaned.length);
+
+    String formatted = '';
+    for (int i = 0; i < limited.length; i++) {
+      if (i > 0 && i % 4 == 0) {
+        formatted += ' ';
+      }
+      formatted += limited[i];
+    }
+
+    return formatted;
+  }
+
+  String _formatExpiryDate(String value) {
+    final cleaned = value.replaceAll(RegExp(r'\D'), '');
+    if (cleaned.isEmpty) return '';
+
+    if (cleaned.length <= 2) {
+      return cleaned;
+    }
+
+    final month = cleaned.substring(0, 2);
+    final year = cleaned.substring(2, cleaned.length > 4 ? 4 : cleaned.length);
+
+    return '$month/$year';
+  }
+}