public bool TryToReserveProduct(Product product, string sessionId, out Reservation reservation)
{
if (_stocksProvider.TryDecreaseStock(product.Id, 1))
{
reservation = new Reservation(product, sessionId);
if (!_reservationsProvider.TryAddReservation(reservation))
{
// in case attempt to add reservation to the reservedInventory failed -> increase stock
_stocksProvider.TryIncreaseStock(product.Id, 1);
return(false);
}
return(true);
}
reservation = null;
return(false);
}
