78 lines
3.2 KiB
Dart
78 lines
3.2 KiB
Dart
import 'package:flutter_bloc/flutter_bloc.dart';
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import 'package:news/data/models/NewsModel.dart';
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import 'package:news/utils/api.dart';
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import 'package:news/utils/strings.dart';
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abstract class GeneralNewsState {}
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class GeneralNewsInitial extends GeneralNewsState {}
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class GeneralNewsFetchInProgress extends GeneralNewsState {}
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class GeneralNewsFetchSuccess extends GeneralNewsState {
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final List<NewsModel> generalNews;
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final int totalCount;
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final bool hasMoreFetchError;
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final bool hasMore;
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GeneralNewsFetchSuccess({required this.totalCount, required this.hasMoreFetchError, required this.hasMore, required this.generalNews});
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}
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class GeneralNewsFetchFailure extends GeneralNewsState {
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final String errorMessage;
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GeneralNewsFetchFailure(this.errorMessage);
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}
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class GeneralNewsCubit extends Cubit<GeneralNewsState> {
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GeneralNewsCubit() : super(GeneralNewsInitial());
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Future<dynamic> getGeneralNews({required String langId, String? latitude, String? longitude, int? offset, String? newsSlug}) async {
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emit(GeneralNewsInitial());
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try {
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final body = {LANGUAGE_ID: langId, LIMIT: 20};
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if (latitude != null && latitude != "null") body[LATITUDE] = latitude;
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if (longitude != null && longitude != "null") body[LONGITUDE] = longitude;
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if (offset != null) body[OFFSET] = offset;
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if (newsSlug != null && newsSlug != "null" && newsSlug.trim().isNotEmpty) body[SLUG] = newsSlug; // used in case of native link , details screen redirection
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final result = await Api.sendApiRequest(body: body, url: Api.getNewsApi);
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if (!result[ERROR]) {
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emit(GeneralNewsFetchSuccess(
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generalNews: (result[DATA] as List).map((e) => NewsModel.fromJson(e)).toList(), totalCount: result[TOTAL], hasMoreFetchError: false, hasMore: result[DATA].length < result[TOTAL]));
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} else {
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emit(GeneralNewsFetchFailure(result[MESSAGE]));
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}
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return result;
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} catch (e) {
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throw ApiMessageAndCodeException(errorMessage: e.toString());
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}
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}
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bool hasMoreGeneralNews() {
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return (state is GeneralNewsFetchSuccess) ? (state as GeneralNewsFetchSuccess).hasMore : false;
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}
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void getMoreGeneralNews({required String langId, String? latitude, String? longitude}) async {
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if (state is GeneralNewsFetchSuccess) {
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try {
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final result = await getGeneralNews(langId: langId, latitude: latitude, longitude: longitude, offset: (state as GeneralNewsFetchSuccess).generalNews.length);
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if (!result[ERROR]) {
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List<NewsModel> updatedResults = (state as GeneralNewsFetchSuccess).generalNews;
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updatedResults.addAll((result[DATA] as List).map((e) => NewsModel.fromJson(e)).toList());
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emit(GeneralNewsFetchSuccess(generalNews: updatedResults, totalCount: result[TOTAL], hasMoreFetchError: false, hasMore: updatedResults.length < result[TOTAL]));
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} else {
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emit(GeneralNewsFetchFailure(result[MESSAGE]));
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}
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} catch (e) {
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emit(GeneralNewsFetchSuccess(
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generalNews: (state as GeneralNewsFetchSuccess).generalNews,
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hasMoreFetchError: true,
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totalCount: (state as GeneralNewsFetchSuccess).totalCount,
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hasMore: (state as GeneralNewsFetchSuccess).hasMore));
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}
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}
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}
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}
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