private void Notify(int count)
{
for (int i = 0; i < count; i++)
{
if (!_buyers.TryDequeue(out var buyer))
{
break;
}
_readyForService.Add(buyer);
Availabled?.Invoke(this, new ObjectAvailabledEventArgs(buyer.Id));
}
}
public IReadOnlyCollection <Product> TakeAnyProducts(int count, IReadOnlyBuyer buyer)
{
if (buyer == null)
{
throw new ArgumentNullException(nameof(buyer));
}
if (!IsAvailable())
{
throw new ShelfIsBusyException();
}
_semaphoreSlim.Wait();
var result = TakeProductInternal(count, buyer);
_semaphoreSlim.Release();
Availabled?.Invoke(this, EventArgs.Empty);
return(result);
}
public Receipt MakePurchases(IReadOnlyBuyer buyer)
{
if (buyer == null)
{
throw new ArgumentNullException(nameof(buyer));
}
if (!IsAvailable())
{
throw new CashboxIsBusyException();
}
_semaphoreSlim.Wait();
MakePurchasesInternal(buyer);
var result = new Receipt(Supermarket, buyer.Basket.Products);
_semaphoreSlim.Release();
Availabled?.Invoke(this, EventArgs.Empty);
return(result);
}