calorimeter/lib/utils/settings_bloc.dart

import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:calorimeter/storage/storage.dart';

class SettingsDataBloc extends Bloc<SettingsEvent, SettingsState> {
  final FoodStorage storage;

  SettingsDataBloc(super.initialState, {required this.storage}) {
    on<DailyKcalLimitUpdated>(persistDailyLimit);
  }

  void persistDailyLimit(
      DailyKcalLimitUpdated event, Emitter<SettingsState> emit) async {
    await storage.updateLimit(event.kcal);
    emit(SettingsState(kcalLimit: event.kcal));
  }
}

class SettingsEvent {}

class DailyKcalLimitUpdated extends SettingsEvent {
  final double kcal;
  DailyKcalLimitUpdated({required this.kcal});
}

class SettingsState {
  final double kcalLimit;

  SettingsState({required this.kcalLimit});

  factory SettingsState.init() {
    return SettingsState(kcalLimit: 2000);
  }

  static from(SettingsState state) {
    return SettingsState(kcalLimit: state.kcalLimit);
  }
}