Exit if duplicate launch detected (#212)

amendment to the fix for that issue - the prior fix was to just allow two instances to launch

that probably isn't great for the user, so it's better to just terminate if it detects a duplicate launch, and that only happens if two launches happen within the same second so lol

Bloxstrap/App.xaml.cs

@@ -209,6 +209,13 @@ protected override void OnStartup(StartupEventArgs e)
  if (!IsFirstRun)
  {
  Logger.Initialize(IsUninstall);
+
+ if (!Logger.Initialized)
+ {
+ Logger.WriteLine("[App::OnStartup] Possible duplicate launch detected, terminating.");
+ Terminate();
+ }
+
  Settings.Load();
  State.Load();
  FastFlags.Load();

Bloxstrap/Logger.cs

@@ -32,10 +32,19 @@ public void Initialize(bool useTempDir = false)
  WriteLine($"[Logger::Initialize] Initializing at {location}");
 
  if (Initialized)
- throw new Exception("Logger is already initialized");
+ {
+ WriteLine("[Logger::Initialize] Failed to initialize because logger is already initialized");
+ return;
+ }
 
  Directory.CreateDirectory(directory);
 
+ if (File.Exists(location))
+ {
+ WriteLine("[Logger::Initialize] Failed to initialize because log file already exists");
+ return;
+ }
+
  _filestream = File.Open(location, FileMode.Create, FileAccess.Write, FileShare.Read);
 
  if (Backlog.Count > 0)