fairnesscoop / permacoop

@CommandHandler(UpdateCustomerCommand)

export class UpdateCustomerCommandHandler {

  constructor(

    @Inject('ICustomerRepository')

    private readonly customerRepository: ICustomerRepository,

    private readonly isCustomerAlreadyExist: IsCustomerAlreadyExist

  ) {}

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

    const { id, name } = command;

    const customer = await this.customerRepository.findOneById(id);

    if (!customer) {

      throw new CustomerNotFoundException();

    }

    if (

      name !== customer.getName() &&

      true === (await this.isCustomerAlreadyExist.isSatisfiedBy(name))

    ) {

      throw new CustomerAlreadyExistException();

    }

    customer.updateName(name);

    await this.customerRepository.save(customer);