public override void Execute()
{
if (!HasEnoughArguments(2))
{
return;
}
string username = Command[0];
string productIdString = Command[1];
int amountToPurchase = 1;
Product product;
User user;
if (Command.Length == 3 && !int.TryParse(Command[2], out amountToPurchase))
{
barcodeCli.DisplayGeneralError($"{Command[2]} is not a valid amount.");
return;
}
try
{
user = barcodeSystem.GetUserByUsername(username);
if (uint.TryParse(productIdString, out uint productId))
{
try
{
product = barcodeSystem.GetProductById(productId);
try
{
BuyTransaction transaction = barcodeSystem.BuyProduct(user, product, amountToPurchase);
this.transaction = transaction;
Succeeded = transaction.Succeeded;
barcodeCli.DisplayUserBuysProduct(transaction);
}
catch (InsufficientCreditsException)
{
barcodeCli.DisplayInsufficientCash(user, product);
}
}
catch (ProductNotFoundException)
{
barcodeCli.DisplayProductNotFound(productIdString);
}
}
}
catch (UserNotFoundException)
{
barcodeCli.DisplayUserNotFound(username);
}
base.Execute();
}
protected bool TryGetProduct()
{
if (!HasEnoughArguments(2))
{
barcodeCli.DisplayNotEnoughArguments(Command);
return(false);
}
string productIdString = Command[1];
try
{
uint productId = Convert.ToUInt32(productIdString);
product = barcodeSystem.GetProductById(productId);
}
catch (Exception)
{
barcodeCli.DisplayProductNotFound(productIdString);
return(false);
}
return(true);
}