fairnesscoop / permacoop

@CommandHandler(DeleteEventCommand)

export class DeleteEventCommandHandler {

  constructor(

    @Inject('IEventRepository')

    private readonly eventRepository: IEventRepository,

    private readonly doesEventBelongToUser: DoesEventBelongToUser

  ) {}

  public async execute(command: DeleteEventCommand): Promise<void> {

    const { id, user } = command;

    const event = await this.eventRepository.findOneById(id);

    if (!event) {

      throw new EventNotFoundException();

    }

    if (false === this.doesEventBelongToUser.isSatisfiedBy(event, user)) {

      throw new EventDoesntBelongToUserException();

    }

    await this.eventRepository.delete(event);