/// <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);
        }
示例#3
0
        /// <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);
        }