protected override void OnStart(string[] args)
{
//Grab those creds
var creds = CredentialsManager.GetCreds(loggingSVC: svc);
currentAccount = creds.Email;
//Start up Firebase service
svc = new SVCFirebase(creds.Key, creds.Email, creds.Password);
//Initialize the folder watcher
folderWatcher = new FileSystemWatcher(printerOutputFolderPath)
{
NotifyFilter = NotifyFilters.LastWrite //Only observe writes to the directory
};
//Add event handlers
folderWatcher.Changed += new FileSystemEventHandler(OnChangedEvent);
folderWatcher.Created += new FileSystemEventHandler(OnChangedEvent);
//Start watching
folderWatcher.EnableRaisingEvents = true;
//Start the heartbeat
timer = new System.Timers.Timer
{
Interval = 1000 * 60 * 60 //Every hour
};
timer.Elapsed += new System.Timers.ElapsedEventHandler(SendHeartbeat);
timer.Start();
}
public static Ticket Parse(FileStream file, FileInfo info, SVCFirebase loggingSvc)
{
try
{
//Read it all
var ticketRaw = File.ReadAllText(info.FullName);
//Extract the line with the order number and the order type
var delim = "Order #: ";
var delimStart = ticketRaw.IndexOf(delim);
var delimEnd = ticketRaw.IndexOf("\n", delimStart);
var rawInfo = ticketRaw.Substring(delimStart + delim.Length, delimEnd - delimStart - delim.Length);
//Extract the order number
var firstSpace = rawInfo.IndexOf(" ");
var orderNumStr = rawInfo.Substring(0, firstSpace);
//Extract order kind
var excludeOrderNum = rawInfo.Substring(firstSpace, rawInfo.Length - firstSpace);
var kind = excludeOrderNum.Trim(' ', '\r', '\n').Replace(" ", "");
//Extract the date
DateTime?date = null;
try
{
var dateRegX = new Regex(@"\d+\/\d+\/\d+ \d+:\d+:\d+ (AM|PM)");
var match = dateRegX.Match(ticketRaw);
date = DateTime.Parse(match.ToString());
}
catch (Exception e)
{
loggingSvc.LogEvent("TicketParserError: " + e.Message);
}
return(new Ticket {
OrderNumber = orderNumStr, OrderKind = kind, Timestamp = date
});
}
catch (Exception e)
{
loggingSvc.LogEvent("TicketParser Error: " + e.Message);
}
return(null);
}
public static Credentials GetCreds(SVCFirebase loggingSVC)
{
var path = GetCredDocPath();
//Check if credentials file exists
if (!File.Exists(path))
{
//If the file doesn't exist, try to create it
try
{
//Create the JSON template for someone to fill out later
var template = new Credentials {
Key = "", Email = "", Password = ""
};
//Create the file, write the JSON in, then close the file
File.WriteAllText(path, JsonConvert.SerializeObject(template));
}
catch (Exception e)
{
loggingSVC.LogEvent("Couldn't create cred file because: " + e.Message);
return(null);
}
}
//Read the cred file and extract creds
try
{
var credFileContents = File.ReadAllText(path);
if (DetectsPossibleEncryptionFor(credFileContents))
{
credFileContents = EncryptionBlackBox(credFileContents); //If possibly encrypted, try decrpyting
}
var result = JsonConvert.DeserializeObject <Credentials>(credFileContents);
File.WriteAllText(path, EncryptionBlackBox(credFileContents)); //If deserialization worked, then re-encrpyt the file
return(result);
}
catch (Exception e)
{
loggingSVC.LogEvent("Couldn't read cred file because: " + e.Message);
return(null);
}
}
private void OnChangedEvent(object sender, FileSystemEventArgs e)
{
//FileSystemWatcher will fire the event multiple times even for just one file, so this bool limits it
if (!IsBusy())
{
SetBusy(true);
var dirInfo = new DirectoryInfo(printerOutputFolderPath);
var fileAr = dirInfo.GetFiles().ToArray();
files = new LinkedList <FileInfo>(fileAr);
//If there's nothing in the directory, just stop
if (files.Count == 0)
{
SetBusy(false);
return;
}
new Thread(async() =>
{
FileStream currentFile = null;
var attemptCount = 0;
var attemptLimit = 10;
//Do this stuff until the batch is empty
while (files.Count != 0)
{
//Try to open a file, but give up if the file can't be opened after a certain amount of attempts
while (currentFile == null && attemptCount < attemptLimit)
{
attemptCount += 1;
Thread.Sleep(3000); //Wait a bit because if not, then this program'll sometimes delete the data before it can actually make it to the printer
currentFile = TryToOpen(files.First.Value.FullName);
if (currentFile == null)
{
Thread.Sleep(500);
}
}
attemptCount = 0; //Reset this immediately since the while loop is done with it
if (currentFile != null && files.First.Value != null)
{
await ProcessAsync(currentFile, files.First.Value);
}
//Clean up for next loop
currentFile = null;
files.RemoveFirst();
}
SetBusy(false); //Now that all the files in the batch have been processed and removed from the linked list, the program isn't busy anymore
//One more thing, if the directory still contains SHD or SPL files, it's not done, so call again
var leftoverFiles = GetFiles(printerOutputFolderPath, ".SHD", ".SPL");
if (leftoverFiles.Count != 0)
{
Thread.Sleep(1000);
if (SVCFirebase.ThereIsInternet()) //Oh, but don't keep retrying if there's no internet
{
OnChangedEvent(null, null); //Recursive call again
}
}
}).Start();
}
}