public bool IsStockDuplicatedInBasket(StockWithBooksBasket stockWithBooksBasket)
{
if (StockWithBooks.Any(s => s.StockId == stockWithBooksBasket.StockId))
{
return(true);
}
return(false);
}
public bool IsBookEanDuplicatedInBasket(StockWithBooksBasket stockWithBooksBasket)
{
if (StockWithBooks.Any(s => s.Ean13 == stockWithBooksBasket.Ean13))
{
return(true);
}
return(false);
}
public void AddNewStock(StockWithBooksBasket stockWithBooksBasket)
{
if (stockWithBooksBasket is null)
{
throw new ArgumentException("Requested stock cannot be null");
}
if (IsStockDuplicatedInBasket(stockWithBooksBasket))
{
throw new ArgumentException("Trying to add duplicate stock for basket");
}
StockWithBooks.Add(stockWithBooksBasket);
}