new project stable version

lib/presentation/viewmodel/susbcription_details_bloc.dart

@@ -0,0 +1,66 @@
+import 'package:be_happy/core/result.dart';
+import 'package:be_happy/domain/entities/subscription.dart';
+import 'package:be_happy/domain/usecase/activate_subscription_usecase.dart';
+import 'package:be_happy/domain/usecase/get_subscription_by_id_usecase.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+
+import '../event/subscription_details_event.dart';
+import '../state/susbcription_details_state.dart';
+
+class SubscriptionDetailsBloc extends Bloc<SubscriptionDetailsEvent, SubscriptionDetailsState> {
+  final GetSubscriptionByIdUsecase getSubscriptionByIdUsecase;
+  final ActivateSubscriptionUsecase activateSubscriptionUsecase;
+
+  SubscriptionDetailsBloc(this.getSubscriptionByIdUsecase,
+      this.activateSubscriptionUsecase) : super(DetailsLoading()) {
+    on<LoadDetailsEvent>((event, emit) async {
+      emit(DetailsLoading());
+      try {
+
+        final result = await getSubscriptionByIdUsecase(event.subscriptionId);
+
+        switch (result) {
+
+          case Success<Subscription>():
+            final sub = result.data;
+
+            if (sub == null) return;
+
+            emit(DetailsContentState(
+              subscription: sub,
+              selectedPeriod: sub.options.first,
+            ));
+          case Failure<Subscription>():
+            emit(DetailsError("Ошибка при запросе данных"));
+
+        }
+
+
+      } catch (e) {
+        emit(DetailsError("Не удалось загрузить данные"));
+      }
+    });
+
+    on<SelectPeriodEvent>((event, emit) {
+      if (state is DetailsContentState) {
+        emit((state as DetailsContentState).copyWith(selectedPeriod: event.period));
+      }
+    });
+
+    on<ToggleAgreementEvent>((event, emit) {
+      if (state is DetailsContentState) {
+        emit((state as DetailsContentState).copyWith(isAgreed: event.value));
+      }
+    });
+
+    on<ActivateSubscriptionPressed>((event, emit) {
+      switch(state) {
+        case DetailsContentState contentState:
+          activateSubscriptionUsecase(contentState.selectedPeriod.id);
+          break;
+        default:
+          break;
+      }
+    });
+  }
+}