public async Task HandleAsync(PayAd command)
{
var ad = await _adRepository.GetAsync(command.AdId);
if (ad is null)
{
throw new AdNotFoundException(command.AdId);
}
ad.Pay();
var fundsCharged = await _usersApiClient.ChargeFundsAsync(ad.UserId, ad.Amount);
if (!fundsCharged)
{
throw new CannotPayAdException(ad.Id);
}
await _adRepository.UpdateAsync(ad);
await _messageBroker.PublishAsync(new AdPaid(ad.Id));
}
