UI - Ensure proper restart and shutdown

src/Artemis.Core/Services/PluginService.cs

@@ -348,7 +348,7 @@ namespace Artemis.Core.Services
             // Device providers cannot be disabled at runtime, restart the application
             if (plugin is DeviceProvider)
             {
-                CurrentProcessUtilities.RestartSelf();
+                CurrentProcessUtilities.Shutdown(2, true);
                 return;
             }
 

src/Artemis.Core/Utilities/CurrentProcessUtilities.cs

@@ -11,16 +11,24 @@ namespace Artemis.Core.Utilities
             return Process.GetCurrentProcess().MainModule.FileName;
         }
 
-        public static void RestartSelf()
+        public static void Shutdown(int delay, bool restart)
         {
+            // Always kill the process after the delay has passed, with all the plugins a graceful shutdown cannot be guaranteed
+            var arguments = "-Command \"& {Start-Sleep -s " + delay + "; (Get-Process 'Artemis.UI').kill()}";
+            // If restart is required, start the executable again after the process was killed 
+            if (restart)
+                arguments = "-Command \"& {Start-Sleep -s " + delay + "; (Get-Process 'Artemis.UI').kill(); Start-Process -FilePath '" + GetCurrentLocation() + "'}\"";
+
             var info = new ProcessStartInfo
             {
-                Arguments = "/C choice /C Y /N /D Y /T 5 & START /wait taskkill /f /im \"Artemis.UI.exe\" & START \"\" \"" + GetCurrentLocation() + "\"",
-                WindowStyle = ProcessWindowStyle.Hidden, 
-                CreateNoWindow = true, 
-                FileName = "cmd.exe"
+                Arguments = arguments,
+                WindowStyle = ProcessWindowStyle.Hidden,
+                CreateNoWindow = true,
+                FileName = "PowerShell.exe"
             };
             Process.Start(info);
+
+            // Also attempt a graceful shutdown on the UI thread
             Execute.OnUIThread(() => Application.Current.Shutdown());
         }
     }