course-work/lib/logic/itemscubit.dart

import 'package:cubit_form/cubit_form.dart';
import 'package:equatable/equatable.dart';
import 'package:selfprivacy/models/item.dart';
import 'package:selfprivacy/logic/server_api.dart';

export 'package:provider/provider.dart';

part 'itemsstate.dart';

class ItemsCubit extends Cubit<ItemsState> {
  ItemsCubit()
      : super(
          const ItemsState(
            <Item>[],
            false,
          ),
        );

  final ServerApi api = ServerApi();

  Future<void> load() async {
    refresh();
  }

  Future<void> refresh() async {
    emit(state.copyWith(isLoading: true));
    final resp = await api.getItems();
    final List<Item> items = resp.data;
    if (items.isNotEmpty) {
      emit(
        ItemsState(
          items,
          false,
        ),
      );
    } else {
      emit(state.copyWith(isLoading: false));
    }
  }

  Future<void> create(final Item item) async {
    await api.createItem(item);

    final List<Item> items = List<Item>.from(state.items);
    items.add(item);
    emit(state.copyWith(items: items));
  }

  Future<void> delete(final Item item) async {
    final List<Item> items = List<Item>.from(state.items);
    await api.deleteItem(item);
    items.removeWhere((final Item u) => u.id == item.id);
    emit(state.copyWith(items: items));
  }

  @override
  void clear() async {
    emit(
      const ItemsState(
        <Item>[],
        false,
      ),
    );
  }
}