Switch to main window after login

AutoCat/ViewModels/AuthWindowViewModel.cs

@@ -48,6 +48,12 @@ public class AuthWindowViewModel: ViewModelBase
 
     #endregion
 
+    #region Events
+
+    public event EventHandler? ReplaceWithMainWindowEvent;
+
+    #endregion
+
     public AuthWindowViewModel(IApiService apiService, IStorageService storageService)
     {
         _apiService = apiService;
@@ -65,8 +71,8 @@ public class AuthWindowViewModel: ViewModelBase
     private async Task Login()
     {
         var user = await _apiService.Login(Email, Password);
-        //await _storageService.SetUser(user);
+        await _storageService.SetUser(user);
-        Close();
+        ReplaceWithMainWindowEvent?.Invoke(this, EventArgs.Empty);
     }
 
     private async void ShowError(Exception error)

AutoCat/Views/AuthWindow.axaml.cs

@@ -1,5 +1,9 @@
 using AutoCat.ViewModels;
+using Avalonia;
 using Avalonia.Controls;
+using Avalonia.Controls.ApplicationLifetimes;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting.Internal;
 
 namespace AutoCat.Views;
 
@@ -9,10 +13,16 @@ public partial class AuthWindow : Window
     {
         InitializeComponent();
 
-        if (DataContext is ViewModelBase vm)
+        if (DataContext is AuthWindowViewModel vm)
         {
-            vm.ClosingRequest += (sender, args) =>
+            vm.ReplaceWithMainWindowEvent += (sender, args) =>
             {
+                if (Application.Current is not App app) return;
+                if (app.ApplicationLifetime is not IClassicDesktopStyleApplicationLifetime desktop) return;
+                
+                var mainWindow = app.AppHost.Services.GetRequiredService<MainWindow>();
+                mainWindow.Show();
+                desktop.MainWindow = mainWindow;
                 Close();
             };
         }