36 lines
1.1 KiB
Dart
36 lines
1.1 KiB
Dart
|
import 'package:flutter_bloc/flutter_bloc.dart';
|
||
|
|
import 'package:flutter_app/presentation/like_bloc/like_event.dart';
|
||
|
|
import 'package:flutter_app/presentation/like_bloc/like_state.dart';
|
||
|
|
import 'package:shared_preferences/shared_preferences.dart';
|
||
|
|
|
||
|
|
const String _likedPrefsKey = 'liked';
|
||
|
|
|
||
|
|
class LikeBloc extends Bloc<LikeEvent, LikeState> {
|
||
|
|
LikeBloc() : super(const LikeState(likedIds: [])) {
|
||
|
|
on<ChangeLikeEvent>(_onChangeLike);
|
||
|
|
on<LoadLikesEvent>(_onLoadLikes);
|
||
|
|
}
|
||
|
|
|
||
|
|
Future<void> _onLoadLikes(LoadLikesEvent event, Emitter<LikeState> emit) async {
|
||
|
|
final prefs = await SharedPreferences.getInstance();
|
||
|
|
final data = prefs.getStringList(_likedPrefsKey);
|
||
|
|
|
||
|
|
emit(state.copyWith(likedIds: data));
|
||
|
|
}
|
||
|
|
|
||
|
|
Future<void> _onChangeLike(ChangeLikeEvent event, Emitter<LikeState> emit) async {
|
||
|
|
final updatedList = List<String>.from(state.likedIds ?? []);
|
||
|
|
|
||
|
|
if (updatedList.contains(event.id)) {
|
||
|
|
updatedList.remove(event.id);
|
||
|
|
} else {
|
||
|
|
updatedList.add(event.id);
|
||
|
|
}
|
||
|
|
|
||
|
|
final prefs = await SharedPreferences.getInstance();
|
||
|
|
prefs.setStringList(_likedPrefsKey, updatedList);
|
||
|
|
|
||
|
|
emit(state.copyWith(likedIds: updatedList));
|
||
|
|
}
|
||
|
|
}
|