/// <summary>
/// Creates a new transaction.
/// </summary>
/// <param name="transaction"></param>
public void CreateTransaction(List <Tuple <int, int> > transaction)
{
try
{
status = State.Transaction;
List <Tuple <Product, int> > TrueTransaction = new List <Tuple <Product, int> >();
// error checking
foreach (Tuple <int, int> T in transaction)
{
if (T.Item1 >= ProductDB.GetProductList().Count || T.Item1 <= 0)
{
throw new Exception("Invalid item ID");
}
else
{
TrueTransaction.Add(new Tuple <Product, int>(ProductDB.GetProduct(T.Item1), T.Item2));
}
}
if (TrueTransaction.Count == 0)
{
throw new Exception();
}
salesID++;
Transaction newTransaction = new Transaction(salesID, TrueTransaction);
TransactionDB.AddTransaction(newTransaction);
MessageBox.Show(newTransaction.FormatReceipt());
returnval = "Transaction generated successfully!";
update(returnval, status);
}
catch (Exception)
{
returnval = "\nAn error has occurred. Please try again.";
}
}
/// <summary>
/// Processes a return request given a receipt.
/// </summary>
/// <param name="receiptID"></param>
/// <param name="itemID"></param>
/// <param name="itemAmount"></param>
public void ProcessReturn(int receiptID, int itemID, int itemAmount)
{
status = State.Return;
if (receiptID > TransactionDB.GetTransactionInt() || receiptID < 0)
{
throw new Exception();
}
Transaction receipt = TransactionDB.GetTransaction(receiptID);
for (int i = 0; i < receipt.GetItems.Count; i++)
{
List <Tuple <Product, int> > temp = receipt.GetItems;
if (temp[i].Item1.ID == itemID)
{
if (itemAmount > temp[i].Item2)
{
returnval = "Error. Cannot return more items than purchased.";
update(returnval, status);
return;
}
else
{
temp[i] = new Tuple <Product, int>(temp[i].Item1, temp[i].Item2 - itemAmount);
returnval = "Success! Items returned.";
update(returnval, status);
return;
}
}
}
returnval = "Error. Item Not Found.";
update(returnval, status);
}
/// <summary>
/// Adds a Transaction to the Rebate DataBase.
/// </summary>
/// <param name="Date"></param>
/// <param name="ID"></param>
public void AddToRebateList(DateTime Date, int ID)
{
status = State.Rebate;
Transaction temp = TransactionDB.GetTransaction(ID);
returnval = RebateDB.AddRebateToList(temp, Date);
update(returnval, status);
}