fairnesscoop / pictyschool

@CommandHandler(UpdateShippingCostCommand)

export class UpdateShippingCostCommandHandler {

  constructor(

    @Inject('IShippingCostRepository')

    private readonly shippingcostRepository: IShippingCostRepository,

    private readonly isShippingCostAlreadyExist: IsShippingCostAlreadyExist

  ) {}

  public async execute(command: UpdateShippingCostCommand): Promise<string> {

    const { id, grams, price } = command;

    const shippingCost = await this.shippingcostRepository.findOneById(id);

    if (!shippingCost) {

      throw new ShippingCostNotFoundException();

    }

    if (

      grams !== shippingCost.getGrams() &&

      true === (await this.isShippingCostAlreadyExist.isSatisfiedBy(grams))

    ) {

      throw new ShippingCostAlreadyExistException();

    }

    shippingCost.update(grams, Math.round(price * 100));

    await this.shippingcostRepository.save(shippingCost);

    return shippingCost.getId();