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();
}
public override void Execute()
{
try
{
List <ICommand> commands = commandsEntered.Where(command => command.Succeeded).ToList();
barcodeCli.DisplayCommandLog(commands);
}
catch (Exception e)
{
barcodeCli.DisplayGeneralError(e.ToString());
}
base.Execute();
}
public BarcodeSystem AddProductDataStore(IDataStore <Product> productDataStore)
{
this.productDataStore = productDataStore;
try
{
IEnumerable <Product> productStore = this.productDataStore.ReadData();
Products = productStore.ToList();
}
catch
{
barcodeCli.DisplayGeneralError("Product data store not loaded." +
"\n" +
"Please make sure that you have provided the correct data." +
"\n" +
"Could not find:" +
"\n" +
$"{this.productDataStore.fullFilePath}");
barcodeCli.AwaitKeyPress().Close();
}
return(this);
}
public override void Execute()
{
try
{
CommandToUndo = commandsExecuted.FindLast(command => !command.Undone && command.Succeeded);
CommandToUndo?.Undo();
Succeeded = true;
barcodeCli.DisplayUndoCommand(CommandToUndo);
}
catch
{
barcodeCli.DisplayGeneralError("There is no command to undo.");
}
base.Execute();
}