CoderJava · CoderJava · May 29, 2020 · May 27, 2020 · May 28, 2020 · May 28, 2020
diff --git a/lib/feature/data/datasource/news/news_remote_data_source.dart b/lib/feature/data/datasource/news/news_remote_data_source.dart
@@ -4,10 +4,15 @@ import 'package:flutter_news_app/feature/data/model/topheadlinesnews/top_headlin
 import 'package:meta/meta.dart';
 
 abstract class NewsRemoteDataSource {
-  /// Calls the baseUrl:/v2/top-headlines?category=:category&country=:country&apiKey=:apiKey endpoint
+  /// Calls the [baseUrl]/v2/top-headlines?category=:category&country=:country&apiKey=:apiKey endpoint
   ///
   /// Throws a [DioError] for all error codes.
   Future<TopHeadlinesNewsResponseModel> getTopHeadlinesNews(String category);
+
+  /// Calls the [baseUrl]/v2/top-headlines?country=:country&apiKey=:apiKey&q=:q
+  ///
+  /// Throws a [DioError] for all error codes.
+  Future<TopHeadlinesNewsResponseModel> searchTopHeadlinesNews(String keyword);
 }
 
 class NewsRemoteDataSourceImpl implements NewsRemoteDataSource {
@@ -46,4 +51,21 @@ class NewsRemoteDataSourceImpl implements NewsRemoteDataSource {
       throw DioError();
     }
   }
+
+  @override
+  Future<TopHeadlinesNewsResponseModel> searchTopHeadlinesNews(String keyword) async {
+    var response = await dio.get(
+      '/v2/top-headlines',
+      queryParameters: {
+        'country': 'id',
+        'apiKey': constantConfig.apiKeyNewsApi,
+        'q': keyword,
+      },
+    );
+    if (response.statusCode == 200) {
+      return TopHeadlinesNewsResponseModel.fromJson(response.data);
+    } else {
+      throw DioError();
+    }
+  }
 }
diff --git a/lib/feature/data/repository/news/news_repository_impl.dart b/lib/feature/data/repository/news/news_repository_impl.dart
@@ -30,4 +30,19 @@ class NewsRepositoryImpl implements NewsRepository {
       return Left(ConnectionFailure());
     }
   }
+
+  @override
+  Future<Either<Failure, TopHeadlinesNewsResponseModel>> searchTopHeadlinesNews(String keyword) async {
+    var isConnected = await networkInfo.isConnected;
+    if (isConnected) {
+      try {
+        var response = await newsRemoteDataSource.searchTopHeadlinesNews(keyword);
+        return Right(response);
+      } on DioError catch (error) {
+        return Left(ServerFailure(error.message));
+      }
+    } else {
+      return Left(ConnectionFailure());
+    }
+  }
 }
diff --git a/lib/feature/domain/repository/news/news_repository.dart b/lib/feature/domain/repository/news/news_repository.dart
@@ -6,4 +6,5 @@ abstract class NewsRepository {
 
   Future<Either<Failure, TopHeadlinesNewsResponseModel>> getTopHeadlinesNews(String category);
 
+  Future<Either<Failure, TopHeadlinesNewsResponseModel>> searchTopHeadlinesNews(String keyword);
 }
diff --git a/lib/feature/domain/usecase/searchtopheadlinesnews/search_top_headlines_news.dart b/lib/feature/domain/usecase/searchtopheadlinesnews/search_top_headlines_news.dart
@@ -0,0 +1,32 @@
+import 'package:dartz/dartz.dart';
+import 'package:equatable/equatable.dart';
+import 'package:flutter_news_app/core/error/failure.dart';
+import 'package:flutter_news_app/feature/domain/repository/news/news_repository.dart';
+import 'package:meta/meta.dart';
+import 'package:flutter_news_app/core/usecase/usecase.dart';
+import 'package:flutter_news_app/feature/data/model/topheadlinesnews/top_headlines_news_response_model.dart';
+
+class SearchTopHeadlinesNews implements UseCase<TopHeadlinesNewsResponseModel, ParamsSearchTopHeadlinesNews> {
+  final NewsRepository newsRepository;
+
+  SearchTopHeadlinesNews({@required this.newsRepository});
+
+  @override
+  Future<Either<Failure, TopHeadlinesNewsResponseModel>> call(ParamsSearchTopHeadlinesNews params) async {
+    return await newsRepository.searchTopHeadlinesNews(params.keyword);
+  }
+}
+
+class ParamsSearchTopHeadlinesNews extends Equatable {
+  final String keyword;
+
+  ParamsSearchTopHeadlinesNews({@required this.keyword});
+
+  @override
+  List<Object> get props => [keyword];
+
+  @override
+  String toString() {
+    return 'ParamsSearchTopHeadlinesNews{keyword: $keyword}';
+  }
+}
diff --git a/lib/feature/presentation/bloc/topheadlinesnews/top_headlines_news_bloc.dart b/lib/feature/presentation/bloc/topheadlinesnews/top_headlines_news_bloc.dart
@@ -3,14 +3,20 @@ import 'dart:async';
 import 'package:bloc/bloc.dart';
 import 'package:flutter_news_app/core/error/failure.dart';
 import 'package:flutter_news_app/feature/domain/usecase/gettopheadlinesnews/get_top_headlines_news.dart';
+import 'package:flutter_news_app/feature/domain/usecase/searchtopheadlinesnews/search_top_headlines_news.dart';
 import 'package:meta/meta.dart';
 
 import './bloc.dart';
 
 class TopHeadlinesNewsBloc extends Bloc<TopHeadlinesNewsEvent, TopHeadlinesNewsState> {
   final GetTopHeadlinesNews getTopHeadlinesNews;
+  final SearchTopHeadlinesNews searchTopHeadlinesNews;
 
-  TopHeadlinesNewsBloc({@required this.getTopHeadlinesNews}) : assert(getTopHeadlinesNews != null);
+  TopHeadlinesNewsBloc({
+    @required this.getTopHeadlinesNews,
+    @required this.searchTopHeadlinesNews,
+  })  : assert(getTopHeadlinesNews != null),
+        assert(searchTopHeadlinesNews != null);
 
   @override
   TopHeadlinesNewsState get initialState => InitialTopHeadlinesNewsState();
@@ -23,6 +29,8 @@ class TopHeadlinesNewsBloc extends Bloc<TopHeadlinesNewsEvent, TopHeadlinesNewsS
       yield* _mapLoadTopHeadlinesNewsEventToState(event);
     } else if (event is ChangeCategoryTopHeadlinesNewsEvent) {
       yield* _mapChangeCategoryTopHeadlinesNewsEventToState(event);
+    } else if (event is SearchTopHeadlinesNewsEvent) {
+      yield* _mapSearchTopHeadlinesNewsEventToState(event);
     }
   }
 
@@ -47,4 +55,20 @@ class TopHeadlinesNewsBloc extends Bloc<TopHeadlinesNewsEvent, TopHeadlinesNewsS
   ) async* {
     yield ChangedCategoryTopHeadlinesNewsState(indexCategorySelected: event.indexCategorySelected);
   }
+
+  Stream<TopHeadlinesNewsState> _mapSearchTopHeadlinesNewsEventToState(SearchTopHeadlinesNewsEvent event) async* {
+    yield LoadingTopHeadlinesNewsState();
+    var result = await searchTopHeadlinesNews(ParamsSearchTopHeadlinesNews(keyword: event.keyword));
+    yield result.fold(
+      // ignore: missing_return
+      (failure) {
+        if (failure is ServerFailure) {
+          return FailureTopHeadlinesNewsState(errorMessage: failure.errorMessage);
+        } else if (failure is ConnectionFailure) {
+          return FailureTopHeadlinesNewsState(errorMessage: failure.errorMessage);
+        }
+      },
+      (response) => SearchSuccessTopHeadlinesNewsState(listArticles: response.articles),
+    );
+  }
 }
diff --git a/lib/feature/presentation/bloc/topheadlinesnews/top_headlines_news_event.dart b/lib/feature/presentation/bloc/topheadlinesnews/top_headlines_news_event.dart
@@ -31,4 +31,18 @@ class ChangeCategoryTopHeadlinesNewsEvent extends TopHeadlinesNewsEvent {
   String toString() {
     return 'ChangeCategoryTopHeadlinesNewsEvent{indexCategorySelected: $indexCategorySelected}';
   }
+}
+
+class SearchTopHeadlinesNewsEvent extends TopHeadlinesNewsEvent {
+  final String keyword;
+
+  SearchTopHeadlinesNewsEvent({@required this.keyword});
+
+  @override
+  List<Object> get props => [keyword];
+
+  @override
+  String toString() {
+    return 'SearchTopHeadlinesNewsEvent{keyword: $keyword}';
+  }
 }
diff --git a/lib/feature/presentation/bloc/topheadlinesnews/top_headlines_news_state.dart b/lib/feature/presentation/bloc/topheadlinesnews/top_headlines_news_state.dart
@@ -52,4 +52,18 @@ class ChangedCategoryTopHeadlinesNewsState extends TopHeadlinesNewsState {
   String toString() {
     return 'ChangedCategoryTopHeadlinesNewsState{indexCategorySelected: $indexCategorySelected}';
   }
+}
+
+class SearchSuccessTopHeadlinesNewsState extends TopHeadlinesNewsState {
+  final List<ItemArticleTopHeadlinesNewsResponseModel> listArticles;
+
+  SearchSuccessTopHeadlinesNewsState({this.listArticles});
+
+  @override
+  List<Object> get props => [listArticles];
+
+  @override
+  String toString() {
+    return 'SearchSuccessTopHeadlinesNewsState{listArticles: $listArticles}';
+  }
 }
Original file line number	Diff line number	Diff line change
Expand Up		@@ -6,4 +6,5 @@ abstract class NewsRepository {

		Future<Either<Failure, TopHeadlinesNewsResponseModel>> getTopHeadlinesNews(String category);

		Future<Either<Failure, TopHeadlinesNewsResponseModel>> searchTopHeadlinesNews(String keyword);
		}