import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:news/data/models/NewsModel.dart';
import 'package:news/utils/api.dart';
import 'package:news/utils/strings.dart';

abstract class GetUserDraftedNewsState {}

class GetUserDraftedNewsInitial extends GetUserDraftedNewsState {}

class GetUserDraftedNewsFetchInProgress extends GetUserDraftedNewsState {}

class GetUserDraftedNewsFetchSuccess extends GetUserDraftedNewsState {
  final List<NewsModel> GetUserDraftedNews;
  final int totalGetUserDraftedNewsCount;
  final bool hasMoreFetchError;
  final bool hasMore;

  GetUserDraftedNewsFetchSuccess({required this.GetUserDraftedNews, required this.totalGetUserDraftedNewsCount, required this.hasMoreFetchError, required this.hasMore});
}

class GetUserDraftedNewsFetchFailure extends GetUserDraftedNewsState {
  final String errorMessage;

  GetUserDraftedNewsFetchFailure(this.errorMessage);
}

class GetUserDraftedNewsCubit extends Cubit<GetUserDraftedNewsState> {
  GetUserDraftedNewsCubit() : super(GetUserDraftedNewsInitial());

  void getGetUserDraftedNews({int? userId}) async {
    try {
      emit(GetUserDraftedNewsFetchInProgress());
      final apiUrl = "${Api.getDraftNewsApi}/${userId}";
      final result = await Api.sendApiRequest(body: null, url: apiUrl);
      (!result[ERROR])
          ? emit(GetUserDraftedNewsFetchSuccess(
              GetUserDraftedNews: (result[DATA][NEWS][DATA] as List).map((e) => NewsModel.fromJson(e)).toList(),
              totalGetUserDraftedNewsCount: result[DATA][NEWS][TOTAL],
              hasMoreFetchError: false,
              hasMore: (result[DATA][NEWS][DATA] as List).length < result[DATA][NEWS][TOTAL]))
          : emit(GetUserDraftedNewsFetchFailure(result[MESSAGE]));
    } catch (e) {
      emit(GetUserDraftedNewsFetchFailure(e.toString()));
    }
  }

  bool hasMoreGetUserDraftedNews() {
    return (state is GetUserDraftedNewsFetchSuccess) ? (state as GetUserDraftedNewsFetchSuccess).hasMore : false;
  }

  void deleteNews(int index) {
    if (state is GetUserDraftedNewsFetchSuccess) {
      List<NewsModel> newsList = List.from((state as GetUserDraftedNewsFetchSuccess).GetUserDraftedNews)..removeAt(index);

      emit(GetUserDraftedNewsFetchSuccess(
          GetUserDraftedNews: newsList,
          hasMore: (state as GetUserDraftedNewsFetchSuccess).hasMore,
          hasMoreFetchError: false,
          totalGetUserDraftedNewsCount: (state as GetUserDraftedNewsFetchSuccess).totalGetUserDraftedNewsCount - 1));
    }
  }

  void deleteImageId(int index) {
    if (state is GetUserDraftedNewsFetchSuccess) {
      List<NewsModel> newsList = (state as GetUserDraftedNewsFetchSuccess).GetUserDraftedNews;

      newsList[index].imageDataList!.removeAt(index);

      emit(GetUserDraftedNewsFetchSuccess(
          GetUserDraftedNews: newsList,
          hasMore: (state as GetUserDraftedNewsFetchSuccess).hasMore,
          hasMoreFetchError: false,
          totalGetUserDraftedNewsCount: (state as GetUserDraftedNewsFetchSuccess).totalGetUserDraftedNewsCount));
    }
  }
}