import 'dart:async';
import 'package:flutter_bloc/flutter_bloc.dart';

import '../repositories/admin_repository.dart';
import 'admin_event.dart';
import 'admin_state.dart';

export 'admin_event.dart';
export 'admin_state.dart';

class AdminBloc extends Bloc<AdminEvent, AdminState> {
  final AdminRepository repository;

  AdminBloc({required this.repository}) : super(AdminInitial()) {
    on<FetchAdminUsers>(_onFetchUsers);
    on<CreateAdminUser>(_onCreateUser);
    on<UpdateAdminUser>(_onUpdateUser);
  }

  Future<void> _onFetchUsers(FetchAdminUsers event, Emitter<AdminState> emit) async {
    emit(AdminLoading());
    try {
      final users = await repository.fetchUsers();
      emit(AdminLoaded(users));
    } catch (e) {
      emit(const AdminError("Fehler beim Laden der Admin-Nutzer."));
    }
  }

  Future<void> _onCreateUser(CreateAdminUser event, Emitter<AdminState> emit) async {
    try {
      await repository.createUser(event.dto);
      add(FetchAdminUsers());
    } catch (e) {
      emit(AdminError(e.toString()));
    }
  }

  Future<void> _onUpdateUser(UpdateAdminUser event, Emitter<AdminState> emit) async {
    try {
      await repository.updateUser(event.id, event.dto);
      add(FetchAdminUsers());
    } catch (e) {
      emit(const AdminError("Nutzer konnte nicht aktualisiert werden."));
    }
  }
}