private void UpdateAvailabilities(IEnumerable<SaleDetail> saleDetails, Sale newSale, ProductAvailability todaysAvailability)
{
foreach (var saleDetail in saleDetails)
{
var product = _context.Products.SingleOrDefault(x => x.Id == saleDetail.ProductId);
if (product == null || product.IsActive == false)
{
throw new InvalidOperationException("You can't sell deleted product " + product.Name);
}
saleDetail.Sale = newSale;
_context.SaleDetails.Add(saleDetail);
var stockInfo = todaysAvailability.ProductInfos.Single(x => x.ProductId == saleDetail.ProductId);
stockInfo.Amount -= saleDetail.Amount;
}
}
private Sale GenerateNewSale(decimal totalPayed)
{
Sale newSale = new Sale()
{
DateAndTime = DateTime.Now,
TotalAmountPaid = totalPayed
};
_context.Sales.Add(newSale);
return newSale;
}