private static void deleteAllAccessFiles()
{
foreach (var file in Directory.GetFiles(GetInfo.GetAppDataPath() + "Access Files"))
{
File.Delete(file);
}
}
public static void CompareLauncherVersions()
{
int launcherVersion = GetInfo.GetFrontEndLauncherVersion();
int currentLauncherVersion = GetInfo.GetCurrentLauncherVersion();
if (currentLauncherVersion != launcherVersion)
{
Console.WriteLine("Updating launcher version...");
FrontEndUpdater.UpdateLauncher();
}
}
//This method will be called every 5 minutes while the application is running.
//Stateinfo is required for the timer callback delegate.
private void checkForUpdateTimerCallBack(object stateInfo)
{
//1. Check for applicable updates to the backend.xml
this._needsUpdate = UpdateChecker.CompareUserInfo(this._user);
//2. check for lockout signal
this._lockout = GetInfo.LockoutIsEnabled();
//3. If either return true, trigger the autoEvent.
if (this._needsUpdate || this._lockout)
{
_timer.Dispose();
this._autoEvent.Set();
}
}
//This determines whether access locks currently exist on the launcher's access files. This is an effective way to
//determine whether or not any of the files is currently open.
private bool accessLocksExist()
{
var locks = from filePath in Directory.EnumerateFiles(GetInfo.GetAppDataPath() + "Access Files")
where filePath.EndsWith(".laccdb")
select new FileInfo(filePath);
if (locks.Count() > 0)
{
return(true);
}
else
{
return(false);
}
}
public void Excecute()
{
//1. instantiate _autoEvent so it can be used later.
_autoEvent = new AutoResetEvent(false);
//2. Put text on Console for background operation and disable the "x" button.
disableConsoleClose();
//3. Initial check for Access locks
_accessIsOpen = accessLocksExist();
//4. Watch local access files for locks. While they exist:.
FileSystemWatcher watcher = new FileSystemWatcher(GetInfo.GetAppDataPath() + "\\Access Files");
watcher.Deleted += new FileSystemEventHandler(onDeleted);
watcher.NotifyFilter = NotifyFilters.Attributes |
NotifyFilters.CreationTime |
NotifyFilters.DirectoryName |
NotifyFilters.FileName |
NotifyFilters.LastAccess |
NotifyFilters.LastWrite |
NotifyFilters.Size;
//4. Run a timer that will call a specific callback method every 5 minutes.
watcher.EnableRaisingEvents = true;
TimerCallback tcb = checkForUpdateTimerCallBack;
this._timer = new Timer(tcb, null, new TimeSpan(0, 2, 0), new TimeSpan(0, 2, 0));
//5. Wait for an autoevent to be raised to continue execution
this._autoEvent.WaitOne();
this._timer.Dispose();
//6. If autoevent is triggered, then...
if (_lockout)
{
lockUserOut();
}
else if (_needsUpdate)
{
updateUser();
}
else
{
watcher.Dispose();
return;
}
}
//This will lock the console window from being closed and notify the user Access is running.
//It will also change the console color to blue... for funzies.
private void disableConsoleClose()
{
Console.BackgroundColor = ConsoleColor.DarkBlue;
Console.ForegroundColor = ConsoleColor.White;
Console.Title = "P&B Database Launcher - This window must stay open.";
IntPtr hMenu = Process.GetCurrentProcess().MainWindowHandle;
IntPtr hSystemMenu = GetSystemMenu(hMenu, false);
EnableMenuItem(hSystemMenu, SC_CLOSE, MF_GRAYED);
RemoveMenu(hSystemMenu, SC_CLOSE, MF_BYCOMMAND);
Console.Clear();
Console.WriteLine("The P&B Access Database is now running. Please leave this window open. \n");
Console.WriteLine("Current user: {0} \nCurrent UserType: {1} \nCurrent RolloutVersion: {2} \nCurrent Launcher Version {3}",
_user.Name,
_user.UserType,
GetDataFromXml.GetFrontEndSettings().RolloutVersionString,
GetInfo.GetCurrentLauncherVersion());
MinimizeConsoleWindow(hMenu);
}
private static void extractZipFile(DTO.Enums.UserTypeEnum userType)
{
ZipFile.ExtractToDirectory(GetDataFromXml.GetLatestRollout(userType, DTO.Enums.BackEndOrFrontEndEnum.FrontEnd).ZipPath,
GetInfo.GetAppDataPath() + "\\Access Files\\");
}
