feat: refactor code

lib/feature/shop/domain/use_cases/ad_reward_usecase.dart

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+import '../../../../core/resources/data_state.dart';
+import '../../../../core/usecase/use_case.dart';
+import '../repository/shop_repository.dart';
+
+class AdRewardUseCase implements UseCase<DataState<int>, String> {
+  final ShopRepository repository;
+  AdRewardUseCase(this.repository);
+
+  @override
+  Future<DataState<int>> call(String params) => repository.adReward(params);
+}

lib/feature/shop/domain/use_cases/buy_card_usecase.dart

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+import '../../../../core/resources/data_state.dart';
+import '../../../../core/usecase/use_case.dart';
+import '../repository/shop_repository.dart';
+
+class BuyCardUseCase implements UseCase<DataState<String>, String> {
+  final ShopRepository repository;
+  BuyCardUseCase(this.repository);
+
+  @override
+  Future<DataState<String>> call(String params) => repository.buyCard(params);
+}

lib/feature/shop/domain/use_cases/get_shop_usecase.dart

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+import '../../../../core/resources/data_state.dart';
+import '../../../../core/usecase/use_case.dart';
+import '../entities/shop_entities.dart';
+import '../repository/shop_repository.dart';
+
+class GetShopUseCase implements UseCase<DataState<ShopData>, NoParams> {
+  final ShopRepository repository;
+  GetShopUseCase(this.repository);
+
+  @override
+  Future<DataState<ShopData>> call(NoParams params) => repository.getShop();
+}

lib/feature/shop/domain/use_cases/purchase_usecase.dart

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+import '../../../../core/resources/data_state.dart';
+import '../../../../core/usecase/use_case.dart';
+import '../repository/shop_repository.dart';
+
+class PurchaseUseCase implements UseCase<DataState<String>, PurchaseParams> {
+  final ShopRepository repository;
+  PurchaseUseCase(this.repository);
+
+  @override
+  Future<DataState<String>> call(PurchaseParams params) =>
+      repository.purchase(params);
+}

lib/feature/shop/domain/use_cases/select_card_usecase.dart

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+import '../../../../core/resources/data_state.dart';
+import '../../../../core/usecase/use_case.dart';
+import '../repository/shop_repository.dart';
+
+class SelectCardUseCase implements UseCase<DataState<String>, String> {
+  final ShopRepository repository;
+  SelectCardUseCase(this.repository);
+
+  @override
+  Future<DataState<String>> call(String params) =>
+      repository.selectCard(params);
+}