elCaribe app - customization and branding

news-app/lib/cubits/getUserNewsCubit.dart

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+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:news/data/models/NewsModel.dart';
+import 'package:news/data/repositories/GetUserNews/getUserNewsRepository.dart';
+import 'package:news/utils/constant.dart';
+import 'package:news/utils/strings.dart';
+
+abstract class GetUserNewsState {}
+
+class GetUserNewsInitial extends GetUserNewsState {}
+
+class GetUserNewsFetchInProgress extends GetUserNewsState {}
+
+class GetUserNewsFetchSuccess extends GetUserNewsState {
+  final List<NewsModel> getUserNews;
+  final int totalGetUserNewsCount;
+  final bool hasMoreFetchError;
+  final bool hasMore;
+
+  GetUserNewsFetchSuccess({required this.getUserNews, required this.totalGetUserNewsCount, required this.hasMoreFetchError, required this.hasMore});
+}
+
+class GetUserNewsFetchFailure extends GetUserNewsState {
+  final String errorMessage;
+
+  GetUserNewsFetchFailure(this.errorMessage);
+}
+
+class GetUserNewsCubit extends Cubit<GetUserNewsState> {
+  final GetUserNewsRepository _getUserNewsRepository;
+
+  GetUserNewsCubit(this._getUserNewsRepository) : super(GetUserNewsInitial());
+
+  void getGetUserNews({String? latitude, String? longitude}) async {
+    try {
+      emit(GetUserNewsFetchInProgress());
+      final result = await _getUserNewsRepository.getGetUserNews(limit: limitOfAPIData.toString(), offset: "0", latitude: latitude, longitude: longitude);
+      (!result[ERROR])
+          ? emit(GetUserNewsFetchSuccess(
+              getUserNews: result['GetUserNews'], totalGetUserNewsCount: result[TOTAL], hasMoreFetchError: false, hasMore: (result['GetUserNews'] as List<NewsModel>).length < result[TOTAL]))
+          : emit(GetUserNewsFetchFailure(result[MESSAGE]));
+    } catch (e) {
+      emit(GetUserNewsFetchFailure(e.toString()));
+    }
+  }
+
+  bool hasMoreGetUserNews() {
+    return (state is GetUserNewsFetchSuccess) ? (state as GetUserNewsFetchSuccess).hasMore : false;
+  }
+
+  void getMoreGetUserNews({String? latitude, String? longitude}) async {
+    if (state is GetUserNewsFetchSuccess) {
+      try {
+        final result = await _getUserNewsRepository.getGetUserNews(
+            limit: limitOfAPIData.toString(), offset: (state as GetUserNewsFetchSuccess).getUserNews.length.toString(), latitude: latitude, longitude: longitude);
+        List<NewsModel> updatedResults = (state as GetUserNewsFetchSuccess).getUserNews;
+        updatedResults.addAll(result['GetUserNews'] as List<NewsModel>);
+        emit(GetUserNewsFetchSuccess(getUserNews: updatedResults, totalGetUserNewsCount: result[TOTAL], hasMoreFetchError: false, hasMore: updatedResults.length < result[TOTAL]));
+      } catch (e) {
+        emit(GetUserNewsFetchSuccess(
+            getUserNews: (state as GetUserNewsFetchSuccess).getUserNews,
+            hasMoreFetchError: true,
+            totalGetUserNewsCount: (state as GetUserNewsFetchSuccess).totalGetUserNewsCount,
+            hasMore: (state as GetUserNewsFetchSuccess).hasMore));
+      }
+    }
+  }
+
+  void deleteNews(int index) {
+    if (state is GetUserNewsFetchSuccess) {
+      List<NewsModel> newsList = List.from((state as GetUserNewsFetchSuccess).getUserNews)..removeAt(index);
+
+      emit(GetUserNewsFetchSuccess(
+          getUserNews: newsList, hasMore: (state as GetUserNewsFetchSuccess).hasMore, hasMoreFetchError: false, totalGetUserNewsCount: (state as GetUserNewsFetchSuccess).totalGetUserNewsCount - 1));
+    }
+  }
+
+  void deleteImageId(int index) {
+    if (state is GetUserNewsFetchSuccess) {
+      List<NewsModel> newsList = (state as GetUserNewsFetchSuccess).getUserNews;
+
+      newsList[index].imageDataList!.removeAt(index);
+
+      emit(GetUserNewsFetchSuccess(
+          getUserNews: newsList, hasMore: (state as GetUserNewsFetchSuccess).hasMore, hasMoreFetchError: false, totalGetUserNewsCount: (state as GetUserNewsFetchSuccess).totalGetUserNewsCount));
+    }
+  }
+}