static void Main(string[] args)
{
// Clear output
OutputLoggerHelper.ClearOutputFile();
OutputLoggerHelper.WriteToOutput("*** Message Application Started ***");
OutputLoggerHelper.WriteToOutput($"* Simulating data start: { DateTime.Now.ToString() } *");
StartupMessageGenerator generator = new StartupMessageGenerator();
generator.CreateMessages();
OutputLoggerHelper.WriteToOutput($"* Simulating data finish: { DateTime.Now.ToString() } * ");
// Invoke execution only if you manage to get Instance
ApplicationExecutor.Instance?.StartExecution();
OutputLoggerHelper.WriteToOutput("*** Message Application Finished ***");
// Only display the output file if it exists and we did not set it to skip
if (OutputLoggerHelper.OutputFileExists() && !OutputLoggerHelper.SkipOutputFile)
{
Console.WriteLine("Press Enter to open the output log txt file ");
Console.ReadLine();
OutputLoggerHelper.DisplayOutputFile();
}
Console.WriteLine("Press any key to exit application.");
Console.ReadLine();
}
public override bool MessageIsValid(Message message)
{
if (!base.MessageIsValid(message))
{
return(false);
}
if (message.MessageType != MessageType.Adjustment)
{
OutputLoggerHelper.WriteToOutput(ExceptionHelper.GetUnifiedWarningMessage("The message type must be Adjustment.", message.MessageId));
return(false);
}
if (message.SaleAdjustment == null)
{
OutputLoggerHelper.WriteToOutput(ExceptionHelper.GetUnifiedWarningMessage("The sale adjustment cannot be empty for sale adjustment message.", message.MessageId));
return(false);
}
if (message.SaleAdjustment.AdjustmentValue < 1 || message.SaleAdjustment.AdjustmentValue == Decimal.MinValue)
{
OutputLoggerHelper.WriteToOutput(ExceptionHelper.GetUnifiedWarningMessage($"The sale adjustment value must be at least { new decimal(1).ToString("n2") } for sale adjustment message. Current sale adjustment: { message.SaleAdjustment.AdjustmentValue.ToString() }", message.MessageId));
return(false);
}
return(true);
}
public void ProcessMessage(Message message)
{
try
{
// Validate message
bool messageValidated = MessageValidatorFactory.MessageIsValid(message);
if (!messageValidated)
{
DataManager.AddFailedMessage(message);
return;
}
// Get appropriate sale executor and invoke him
bool saleCompleted = SaleExecutorFactory.GetSaleExecutor(message).ExecuteSale();
// Mark as processed
message.ProcessedAt = DateTime.Now;
if (!saleCompleted)
{
// Code duplication. TODO: Refactor to method and slight logic change
DataManager.AddFailedMessage(message);
return;
}
DataManager.AddCompletedMessage(message);
// check messages and evaluate if we need to report
if (DataManager.GetReadOnlyCompletedMessages().Count % REPORT_SALES_THRESHOLD == 0)
{
ReportManager.ReportSalesPerProduct();
}
// Here we should freeze application until finished
if (DataManager.GetReadOnlyCompletedMessages().Count % REPORT_ADJUSTMENTS_THRESHOLD == 0)
{
appStatus = ApplicationStatus.Paused;
OutputLoggerHelper.WriteToOutput("*** Application paused. Queueing all incoming messages.");
ReportManager.ReportSaleAdjustments();
appStatus = ApplicationStatus.Running;
OutputLoggerHelper.WriteToOutput("*** Application resumed. Queueing all incoming messages.");
OutputLoggerHelper.WriteToOutput(string.Empty);
}
}
catch (Exception ex)
{
DataManager.AddFailedMessage(message);
string initialMsg = "An error occured while processing the message";
OutputLoggerHelper.WriteToOutput(ExceptionHelper.GetUnifiedExceptionMessage(initialMsg, ex));
}
}
/// <summary>
/// Adds a sale to the data manager.
/// </summary>
/// <param name="sale">The incoming sale</param>
/// <returns>True if success, False if failed. In case of exception it will report the exception</returns>
public static bool AddSale(Sale sale)
{
try
{
_sales.Add(sale);
return(true);
}
catch (Exception ex)
{
string initialMsg = "An exception occured trying to save the incoming sale";
OutputLoggerHelper.WriteToOutput(ExceptionHelper.GetUnifiedExceptionMessage(initialMsg, ex));
return(false);
}
}
public override bool MessageIsValid(Message message)
{
if (!base.MessageIsValid(message))
{
return(false);
}
if (message.MessageType != MessageType.Single)
{
OutputLoggerHelper.WriteToOutput(ExceptionHelper.GetUnifiedWarningMessage("The message type must be Single.", message.MessageId));
return(false);
}
return(true);
}
public virtual bool MessageIsValid(Message message)
{
if (message.Sale == null)
{
OutputLoggerHelper.WriteToOutput(ExceptionHelper.GetUnifiedWarningMessage("The incoming sale cannot be empty", message.MessageId));
return(false);
}
if (message.Sale.SaleValue <= 0)
{
OutputLoggerHelper.WriteToOutput(ExceptionHelper.GetUnifiedWarningMessage($"The incoming sale value must be higher than 0. Current value { message.Sale.SaleValue }", message.MessageId));
return(false);
}
return(true);
}
/// <summary>
/// Reports the summary of sales per product
/// </summary>
public static void ReportSalesPerProduct()
{
OutputLoggerHelper.WriteToOutput(string.Empty);
OutputLoggerHelper.WriteToOutput("*** Start: Reporting Sales per Product. ***");
var groupedSalesByProduct = DataManager.GetReadOnlySaleList().GroupBy(s => s.Product);
foreach (var sale in groupedSalesByProduct)
{
OutputLoggerHelper.WriteToOutput("* Product:\t\t " + sale.Key.ToString());
OutputLoggerHelper.WriteToOutput("* Sale Nmbr:\t\t " + sale.Count().ToString());
OutputLoggerHelper.WriteToOutput("* Total Value:\t\t " + sale.Sum(s => s.SaleValue).ToString("n2"));
OutputLoggerHelper.WriteToOutput(string.Empty);
}
OutputLoggerHelper.WriteToOutput("*** End: Reporting Sales per Product. ***");
OutputLoggerHelper.WriteToOutput(string.Empty);
}
/// <summary>
/// Reports the sale adjustments made per adjustment type.
/// </summary>
public static void ReportSaleAdjustments()
{
OutputLoggerHelper.WriteToOutput(string.Empty);
OutputLoggerHelper.WriteToOutput("*** Start: Reporting Sale Adjustments. ***");
var groupedSalesByAdjustmentType = DataManager.GetReadOnlySaleAdjustments().GroupBy(s => s.AdjustmentType);
foreach (var saleAdjustmentType in groupedSalesByAdjustmentType)
{
OutputLoggerHelper.WriteToOutput(Environment.NewLine + "* Sale Adjustment Type: " + saleAdjustmentType.Key.ToString());
foreach (SaleAdjustmentLog sa in saleAdjustmentType)
{
OutputLoggerHelper.WriteToOutput(sa.ToString());
}
}
OutputLoggerHelper.WriteToOutput("*** End: Reporting Sale Adjustments. ***");
OutputLoggerHelper.WriteToOutput(string.Empty);
}
public override bool MessageIsValid(Message message)
{
if (!base.MessageIsValid(message))
{
return(false);
}
if (message.MessageType != MessageType.Multi)
{
OutputLoggerHelper.WriteToOutput(ExceptionHelper.GetUnifiedWarningMessage("The message type must be Multi.", message.MessageId));
return(false);
}
if (message.Sale.SaleOccurrences.GetValueOrDefault(1) <= 1)
{
OutputLoggerHelper.WriteToOutput(ExceptionHelper.GetUnifiedWarningMessage($"The sale occurrence must be bigger than 1 for a multi sale. Current value: { message.Sale.SaleOccurrences }", message.MessageId));
return(false);
}
return(true);
}
