public double AddPurchaseTransaction(int productId)
{
_state = eTransactionState.Purchase;
ProductItem product = _db.GetProductItem(productId);
if (product.Price > _runningTotal)
{
throw new Exception("More money is required.");
}
TransactionItem transactionItem = new TransactionItem();
transactionItem.ProductId = productId;
transactionItem.SalePrice = product.Price;
_transactionItems.Add(transactionItem);
VendingOperation operation = new VendingOperation();
operation.OperationType = VendingOperation.eOperationType.PurchaseItem;
operation.Price = product.Price;
operation.RunningTotal = _runningTotal;
operation.ProductName = product.Name;
_log.LogOperation(operation);
_runningTotal -= product.Price;
return(_runningTotal);
}
public void LogOperation(VendingOperation operation)
{
string filePath = Path.Combine(_folderPath, _fileName);
if (!Directory.Exists(_folderPath))
{
Directory.CreateDirectory(_folderPath);
}
System.IO.File.AppendAllText(filePath, operation.ToString());
}
public void LogOperation(VendingOperation operation)
{
LogItem item = new LogItem();
item.CreationDate = operation.TimeStamp;
item.Amount = operation.Price;
item.OperationId = (int)operation.OperationType;
item.ProductId = operation.ProductId;
item.UserId = operation.UserId;
AddLogItem(item);
}
public IList <VendingOperation> GetLogData(DateTime?startDate, DateTime?endDate)
{
string filePath = Path.Combine(_folderPath, _fileName);
List <VendingOperation> result = new List <VendingOperation>();
//Open a StreamReader with the using statement
using (StreamReader sr = new StreamReader(filePath))
{
while (!sr.EndOfStream)
{
// Read in the line
string line = sr.ReadLine();
string[] parts = line.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
DateTime date = DateTime.Parse($"{parts[0]} {parts[1]} {parts[2]}");
VendingOperation op = new VendingOperation();
op.TimeStamp = date;
if (parts[3] == "FEED")
{
op.OperationType = VendingOperation.eOperationType.FeedMoney;
}
else if (parts[3] == "GIVE")
{
op.OperationType = VendingOperation.eOperationType.GiveChange;
}
else
{
op.OperationType = VendingOperation.eOperationType.PurchaseItem;
for (int i = 3; i < parts.Length - 2; i++)
{
if (i != 3)
{
op.ProductName += " ";
}
op.ProductName += parts[i];
}
}
op.RunningTotal = double.Parse(parts[parts.Length - 1].Substring(1));
op.Price = double.Parse(parts[parts.Length - 2].Substring(1));
if (op.TimeStamp >= startDate && op.TimeStamp <= endDate)
{
result.Add(op);
}
}
}
return(result);
}
/// <summary>
/// Writes an entry into the log and updates the running total.
/// </summary>
/// <param name="amountAdded">The amount of money to add to the running total.</param>
/// <param name="userId">The id of the user purchasing the product</param>
/// <returns>The updated running total after the money has been added.</returns>
public double AddFeedMoneyOperation(double amountAdded, int userId)
{
VendingOperation operation = new VendingOperation();
operation.OperationType = VendingOperation.eOperationType.FeedMoney;
operation.Price = amountAdded;
operation.RunningTotal = RunningTotal;
operation.UserId = userId;
_log.LogOperation(operation);
RunningTotal += amountAdded;
return(RunningTotal);
}
public double AddFeedMoneyOperation(double amountAdded)
{
_state = eTransactionState.FeedMoney;
VendingOperation operation = new VendingOperation();
operation.OperationType = VendingOperation.eOperationType.FeedMoney;
operation.Price = amountAdded;
operation.RunningTotal = _runningTotal;
_log.LogOperation(operation);
_runningTotal += amountAdded;
return(_runningTotal);
}
public void Post([FromBody] LogAddViewModel logOp)
{
VendingOperation vendOp = new VendingOperation();
vendOp.OperationType = (VendingOperation.eOperationType)logOp.OperationType;
vendOp.Price = logOp.Price;
vendOp.TimeStamp = logOp.TimeStamp;
vendOp.UserId = logOp.UserId;
if (logOp.OperationType == LogAddViewModel.eOperationType.PurchaseItem)
{
vendOp.ProductId = logOp.ProductId;
}
_loggingDAO.LogOperation(vendOp);
}
public Change AddGiveChangeOperation()
{
_state = eTransactionState.Change;
double result = _runningTotal;
VendingOperation operation = new VendingOperation();
operation.OperationType = VendingOperation.eOperationType.GiveChange;
operation.RunningTotal = _runningTotal;
_log.LogOperation(operation);
_change = GetChange();
_runningTotal = 0.0;
return(_change);
}
/// <summary>
/// Writes an entry into the log and determines the change needed. Resets the running
/// total to zero.
/// </summary>
/// <param name="userId">The id of the user purchasing the product</param>
/// <returns>The change that should be given to the user</returns>
public Change AddGiveChangeOperation(int userId)
{
var result = GetChange();
VendingOperation operation = new VendingOperation();
operation.OperationType = VendingOperation.eOperationType.GiveChange;
operation.RunningTotal = RunningTotal;
operation.UserId = userId;
_log.LogOperation(operation);
RunningTotal = 0.0;
_vendingTransactionId = BaseItem.InvalidId;
return(result);
}
/// <summary>
/// Handles all purchase transactions. Writes a transaction to the database and an entry
/// into the log file. This also updates the running total property for the vending machine.
/// </summary>
/// <param name="productId">The id of the product being purchased</param>
/// <param name="userId">The id of the user purchasing the product</param>
/// <returns>The updated running total after the purchase has been handled.</returns>
public double AddPurchaseTransaction(int productId, int userId)
{
ProductItem product = _db.GetProductItem(productId);
if (product.Price > RunningTotal)
{
throw new Exception("More money is required.");
}
TransactionItem transactionItem = new TransactionItem();
transactionItem.ProductId = productId;
transactionItem.SalePrice = product.Price;
if (_vendingTransactionId == BaseItem.InvalidId)
{
VendingTransaction vendTrans = new VendingTransaction();
vendTrans.Date = DateTime.UtcNow;
vendTrans.UserId = userId;
List <TransactionItem> transactionItems = new List <TransactionItem>();
transactionItems.Add(transactionItem);
_vendingTransactionId = _db.AddTransactionSet(vendTrans, transactionItems);
}
else
{
transactionItem.VendingTransactionId = _vendingTransactionId;
_db.AddTransactionItem(transactionItem);
}
VendingOperation operation = new VendingOperation();
operation.OperationType = VendingOperation.eOperationType.PurchaseItem;
operation.Price = product.Price;
operation.RunningTotal = RunningTotal;
operation.ProductName = product.Name;
operation.ProductId = product.Id;
operation.UserId = userId;
_log.LogOperation(operation);
RunningTotal -= product.Price;
return(RunningTotal);
}
public IList <VendingOperation> GetLogData(DateTime?startDate, DateTime?endDate)
{
List <VendingOperation> result = new List <VendingOperation>();
var items = GetLogItems(startDate, endDate);
foreach (var item in items)
{
var vendOp = new VendingOperation();
vendOp.OperationType = (VendingOperation.eOperationType)item.OperationId;
vendOp.Price = item.Amount;
vendOp.ProductName = item.ProductName;
vendOp.TimeStamp = item.CreationDate;
vendOp.ProductId = item.ProductId;
vendOp.UserId = item.UserId;
result.Add(vendOp);
}
return(result);
}
/// <summary>
/// Creates each type of vending operation and a purchase operation for each product in the system
/// </summary>
/// <param name="db">Database interface used to create the data</param>
/// <param name="log">Log interface used to create the file data</param>
public static void PopulateLogFileWithOperations(IVendingService db, ILogService log)
{
OperationTypeItem type = new OperationTypeItem();
type.Id = (int)VendingOperation.eOperationType.Invalid;
type.Name = VendingOperation.eOperationType.Invalid.ToString();
log.AddOperationTypeItem(type);
type.Id = (int)VendingOperation.eOperationType.FeedMoney;
type.Name = VendingOperation.eOperationType.FeedMoney.ToString();
log.AddOperationTypeItem(type);
type.Id = (int)VendingOperation.eOperationType.GiveChange;
type.Name = VendingOperation.eOperationType.GiveChange.ToString();
log.AddOperationTypeItem(type);
type.Id = (int)VendingOperation.eOperationType.PurchaseItem;
type.Name = VendingOperation.eOperationType.PurchaseItem.ToString();
log.AddOperationTypeItem(type);
var users = db.GetUserItems();
var products = db.GetProductItems();
double runningTotal = 0.0;
foreach (var user in users)
{
VendingOperation op = new VendingOperation();
op.OperationType = VendingOperation.eOperationType.FeedMoney;
op.Price = 20.0;
op.RunningTotal = runningTotal += op.Price;
op.TimeStamp = DateTime.UtcNow;
op.UserId = user.Id;
log.LogOperation(op);
op.OperationType = VendingOperation.eOperationType.FeedMoney;
op.Price = 10.0;
op.RunningTotal = runningTotal += op.Price;
op.TimeStamp = DateTime.UtcNow;
op.UserId = user.Id;
log.LogOperation(op);
foreach (var product in products)
{
op = new VendingOperation();
op.OperationType = VendingOperation.eOperationType.PurchaseItem;
op.Price = product.Price;
op.RunningTotal = runningTotal - op.Price;
op.TimeStamp = DateTime.UtcNow;
op.UserId = user.Id;
op.ProductId = product.Id;
log.LogOperation(op);
}
op.OperationType = VendingOperation.eOperationType.GiveChange;
op.Price = runningTotal;
runningTotal = 0.0;
op.RunningTotal = runningTotal;
op.TimeStamp = DateTime.UtcNow;
op.UserId = user.Id;
op.ProductId = BaseItem.InvalidId;
log.LogOperation(op);
}
}
public void LogOperation(VendingOperation operation)
{
_operations.Add(operation.Clone());
}
