elCaribe app - customization and branding

news-app/lib/cubits/rssFeedCubit.dart

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+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:news/data/models/RSSFeedModel.dart';
+import 'package:news/utils/api.dart';
+import 'package:news/utils/strings.dart';
+
+abstract class RSSFeedState {}
+
+class RSSFeedInitial extends RSSFeedState {}
+
+class RSSFeedFetchInProgress extends RSSFeedState {}
+
+class RSSFeedFetchSuccess extends RSSFeedState {
+  final List<RSSFeedModel> RSSFeed;
+  final int totalRSSFeedCount;
+  final bool hasMoreFetchError;
+  final bool hasMore;
+
+  RSSFeedFetchSuccess({required this.RSSFeed, required this.totalRSSFeedCount, required this.hasMoreFetchError, required this.hasMore});
+}
+
+class RSSFeedFetchFailure extends RSSFeedState {
+  final String errorMessage;
+
+  RSSFeedFetchFailure(this.errorMessage);
+}
+
+class RSSFeedCubit extends Cubit<RSSFeedState> {
+  RSSFeedCubit() : super(RSSFeedInitial());
+  int limit = 10;
+
+  void getRSSFeed({required String langId, String? categoryId, String? subCategoryId}) async {
+    try {
+      emit(RSSFeedFetchInProgress());
+
+      final result = await Api.sendApiRequest(
+          body: {LANGUAGE_ID: langId, if (categoryId != null) CATEGORY_ID: categoryId, if (subCategoryId != null) SUBCAT_ID: subCategoryId, LIMIT: limit, OFFSET: 0}, url: Api.rssFeedApi);
+
+      (!result[ERROR])
+          ? emit(RSSFeedFetchSuccess(
+              RSSFeed: (result[DATA] as List).map((e) => RSSFeedModel.fromJson(e)).toList(), totalRSSFeedCount: result[TOTAL], hasMoreFetchError: false, hasMore: result.length < result[TOTAL]))
+          : emit(RSSFeedFetchFailure(result[MESSAGE]));
+    } catch (e) {
+      emit(RSSFeedFetchFailure(e.toString()));
+    }
+  }
+
+  bool hasMoreRSSFeed() {
+    return (state is RSSFeedFetchSuccess) ? (state as RSSFeedFetchSuccess).hasMore : false;
+  }
+
+  void getMoreRSSFeed({required String langId}) async {
+    if (state is RSSFeedFetchSuccess) {
+      try {
+        final result = await Api.sendApiRequest(body: {LANGUAGE_ID: langId, LIMIT: limit, OFFSET: (state as RSSFeedFetchSuccess).RSSFeed.length}, url: Api.rssFeedApi);
+        if (!result[ERROR]) {
+          List<RSSFeedModel> updatedResults = (state as RSSFeedFetchSuccess).RSSFeed;
+          updatedResults.addAll((result[DATA] as List).map((e) => RSSFeedModel.fromJson(e)).toList());
+          emit(RSSFeedFetchSuccess(RSSFeed: updatedResults, totalRSSFeedCount: result[TOTAL], hasMoreFetchError: false, hasMore: updatedResults.length < result[TOTAL]));
+        } else {
+          emit(RSSFeedFetchFailure(result[MESSAGE]));
+        }
+      } catch (e) {
+        emit(RSSFeedFetchSuccess(
+            RSSFeed: (state as RSSFeedFetchSuccess).RSSFeed,
+            hasMoreFetchError: true,
+            totalRSSFeedCount: (state as RSSFeedFetchSuccess).totalRSSFeedCount,
+            hasMore: (state as RSSFeedFetchSuccess).hasMore));
+      }
+    }
+  }
+}