//Execute user commands, using the amount of arguments to decide what command to run
private void ParseCommand(string command)
{
var commandArguments = command.Split(' ');
int productId;
int amount;
bool converted;
switch (commandArguments.Length)
{
case 1:
UserInformation(commandArguments[0].Trim());
break;
case 2:
converted = Int32.TryParse(commandArguments[1].Trim(), out productId);
if (converted)
{
BuyProduct(commandArguments[0].Trim(), Convert.ToInt32(commandArguments[1].Trim()));
}
else
{
_ui.DisplayGeneralError("Invalid product id");
}
break;
case 3:
converted = Int32.TryParse(commandArguments[1].Trim(), out amount) &&
Int32.TryParse(commandArguments[2].Trim(), out productId);
if (converted)
{
BuyProduct(commandArguments[0].Trim(), Convert.ToInt32(commandArguments[1].Trim()), Convert.ToInt32(commandArguments[2].Trim()));
}
else
{
_ui.DisplayGeneralError("invalid amount or product id");
}
break;
default:
_ui.DisplayTooManyArgumentsError(command);
break;
}
}
public CommandParser(LineSystem lineSystem, ILineSystemUI ui)
{
LineSystem = lineSystem;
UI = ui;
adminCommands.Add(":close", args => UI.Close());
adminCommands.Add(":activate", args =>
{
ChangeProductBoolField(":activate", args, ProductBoolField.Active, true);
});
adminCommands.Add(":deactivate", args =>
{
ChangeProductBoolField(":deactivate", args, ProductBoolField.Active, false);
});
adminCommands.Add(":crediton", args =>
{
ChangeProductBoolField(":crediton", args, ProductBoolField.CanBeBoughtOnCredit, true);
});
adminCommands.Add(":creditoff", args =>
{
ChangeProductBoolField(":creditoff", args, ProductBoolField.CanBeBoughtOnCredit, false);
});
adminCommands.Add(":addcredits", args =>
{
InsertCashTransaction transaction;
User user;
int amount;
if (IsValidArgs(":addcredits", args, 2))
{
user = LineSystem.GetUser(args[0]);
if (user != null)
{
if (args[1].TryToCredit(out amount))
{
transaction = LineSystem.AddCreditsToAccount(user, amount);
UI.DisplayAdminAddedCredits(transaction);
LineSystem.ExecuteTransaction(transaction);
}
else
{
UI.DisplayGeneralError(args[1] + " is not a invalid cash amount");
}
}
else
{
UI.DisplayUserNotFound(args[0]);
}
}
});
}
public CommandParser(LineSystem lineSystem, ILineSystemUI ui)
{
LineSystem = lineSystem;
UI = ui;
adminCommands.Add(":close", args => UI.Close());
adminCommands.Add(":activate", args =>
{
ChangeProductBoolField(":activate", args, ProductBoolField.Active, true);
});
adminCommands.Add(":deactivate", args =>
{
ChangeProductBoolField(":deactivate", args, ProductBoolField.Active, false);
});
adminCommands.Add(":crediton", args =>
{
ChangeProductBoolField(":crediton", args, ProductBoolField.CanBeBoughtOnCredit, true);
});
adminCommands.Add(":creditoff", args =>
{
ChangeProductBoolField(":creditoff", args, ProductBoolField.CanBeBoughtOnCredit, false);
});
adminCommands.Add(":addcredits", args =>
{
InsertCashTransaction transaction;
User user;
int amount;
if (IsValidArgs(":addcredits", args, 2))
{
user = LineSystem.GetUser(args[0]);
if (user != null)
{
if (args[1].TryToCredit(out amount))
{
transaction = LineSystem.AddCreditsToAccount(user, amount);
UI.DisplayAdminAddedCredits(transaction);
LineSystem.ExecuteTransaction(transaction);
}
else
{
UI.DisplayGeneralError(args[1] + " is not a invalid cash amount");
}
}
else
{
UI.DisplayUserNotFound(args[0]);
}
}
});
}