private bool HandlePurchase(IInventoryItem item)
{
LiveSupplier usedSupplier = GetSupplierForPurchase(item);
usedSupplier.ModifyStockValue(item.Name, item.Category, -1);
Database.ModifyStockValue(item.Name, item.Category, -1);
return(true);
}
private LiveSupplier GetSupplierForPurchase(IInventoryItem item)
{
LiveSupplier suplier = Supliers.Single(s => s.Name.Equals(item.PreferredSupplier.Name));
if (suplier.HasStock(item.Name, item.Category))
{
return(suplier);
}
suplier = Supliers.Single(s => s.Name.Equals(item.FailoverSupplier.Name));
if (suplier.HasStock(item.Name, item.Category))
{
return(suplier);
}
return(Supliers.FirstOrDefault(s => s.HasStock(item.Name, item.Category)));
}