ui: migrate client to gtk

ModpackUpdater.Apps.Client/Program.cs

@@ -1,9 +1,12 @@
 using Castle.Core.Logging;
+using Gtk;
 using ModpackUpdater.Manager;
 using Newtonsoft.Json;
 using Pilz;
 using Pilz.Configuration;
+using System.Diagnostics;
 using System.Runtime.InteropServices;
+using System.Text;
 
 [assembly: AssemblyAppVersion("1.7.0.0")]
 
@@ -13,6 +16,7 @@ public static class Program
 {
     private static readonly SettingsManager settingsManager;
     private static readonly ILogger log = new ConsoleLogger();
+    private static Application uiApp;
 
     public static ISettings Settings => settingsManager.Instance;
 
@@ -49,11 +53,46 @@ public static class Program
 
     private static void RunApp(UpdateCheckOptionsAdv updateOptions)
     {
-        Application.EnableVisualStyles();
-        Application.SetCompatibleTextRenderingDefault(false);
-        Application.SetHighDpiMode(HighDpiMode.PerMonitorV2);
-        AppGlobals.Initialize();
-        Application.Run(new Form1(updateOptions));
+        Application.Init();
+
+        uiApp = new Application("ModpackUpdater.Apps.Client", GLib.ApplicationFlags.None);
+        uiApp.Register(GLib.Cancellable.Current);
+
+        var win = new MainWindow(updateOptions);
+        uiApp.AddWindow(win);
+        win.Show();
+
+        Application.Run();
+    }
+
+    public static void Restart()
+    {
+        var process = Process.GetCurrentProcess();
+        var arguments = Environment.GetCommandLineArgs();
+
+        ProcessStartInfo currentStartInfo = new()
+        {
+            FileName = Environment.ProcessPath,
+        };
+
+        if (arguments.Length >= 2)
+        {
+            var sb = new StringBuilder((arguments.Length - 1) * 16);
+
+            for (int argumentIndex = 1; argumentIndex < arguments.Length; argumentIndex++)
+                sb.Append($"\"{arguments[argumentIndex]}\" ");
+
+            currentStartInfo.Arguments = sb.ToString(0, sb.Length - 1);
+        }
+
+        // Close the current application
+        Application.Quit();
+
+        // Start a new process
+        Process.Start(currentStartInfo);
+
+        // Close this proccess
+        Environment.Exit(0);
     }
 
     private static string GetSettingsPath(int? settingsVersion = 3)