private async Task MakeSaleInternal(SaleParameter prms)
{
if (prms.Amount <= 0)
{
AddError("Amount must be a positive number");
return;
}
var toy = await _context.Toys.FirstOrDefaultAsync(p => p.ID == prms.ToyId);
if (toy == null)
{
AddError($"No toy with id {prms.ToyId} was found");
return;
}
if (toy.Available < prms.Amount)
{
AddError($"Requested to purchase {prms.Amount} but there only {toy.Available} available");
return;
}
toy.Available -= prms.Amount;
_context.Sales.Add(new Sale
{
Amount = prms.Amount,
Toy = toy,
User = await UserRoles.GetUser(User, _userManager),
SaleTime = DateTime.Now,
TotalPrice = toy.Price * prms.Amount
});
await _context.SaveChangesAsync();
}
public async Task <IActionResult> MakeSale(SaleParameter prms)
{
if (!ModelState.IsValid)
{
AddError($"Invalid model");
}
else
{
await MakeSaleInternal(prms);
}
return(RedirectToAction("Index", "Home"));
}
