public async Task <Package> SendPackage(SendPackage request, CancellationToken cancellationToken = default)
{
if (request == null)
{
throw new ArgumentNullException(nameof(request));
}
if (request.ProductItems?.Count == 0)
{
throw new ArgumentException("It's not possible to send package with empty product items");
}
if (!productAvailabilityService.IsEnoughOf(request.ProductItems !.ToArray()))
{
await Publish(new ProductWasOutOfStock(request.OrderId, DateTime.UtcNow));
throw new ArgumentOutOfRangeException(nameof(request.ProductItems), "Cannot send package - product was out of stock.");
}
var package = new Package
{
Id = Guid.NewGuid(),
OrderId = request.OrderId,
ProductItems = request.ProductItems.Select(pi =>
new ProductItem {
Id = Guid.NewGuid(), ProductId = pi.ProductId, Quantity = pi.Quantity
}).ToList(),
SentAt = DateTime.UtcNow
};
await Packages.AddAsync(package, cancellationToken);
var @event = new PackageWasSent(package.Id,
package.OrderId,
package.ProductItems,
package.SentAt);
await SaveChangesAndPublish(@event, cancellationToken);
return(package);
}
public Task Handle(PackageWasSent @event, CancellationToken cancellationToken)
{
return(commandBus.Send(CompleteOrder.Create(@event.OrderId)));
}