Add flyout to show no updates are available

Author: thorstenalpers

src/UI/ViewModels/SettingsViewModel.cs

@@ -24,7 +24,12 @@ public partial class SettingsViewModel(ILogger<SettingsViewModel> logger,
     private readonly UpdaterConfig _updaterConfig = updaterConfig ?? throw new ArgumentNullException(nameof(updaterConfig));
     private readonly AppConfig _appConfig = appConfig ?? throw new ArgumentNullException(nameof(appConfig));
     private readonly IDeploymentService _deploymentService = deploymentService ?? throw new ArgumentNullException(nameof(deploymentService));
-    private bool _hasCheckedForUpdates = false;
+
+    [ObservableProperty]
+    private bool _isNotificationOpen;
+
+    [ObservableProperty]
+    private string _notificationMessage;
 
     [ObservableProperty]
     private string _versionDescription;
@@ -89,11 +94,6 @@ private void OpenReportBug()
     [RelayCommand]
     private void CheckUpdates()
     {
-        if (_hasCheckedForUpdates)
-        {
-            return;
-        }
-
         try
         {
             Uri iconUri = new Uri(_updaterConfig.IconUri, UriKind.Absolute);
@@ -114,15 +114,41 @@ private void CheckUpdates()
         try
         {
             var url = _deploymentService.IsRunningAsInstalled() ? _updaterConfig.UpdateUrlInstaller : _updaterConfig.UpdateUrlSingle;
+            AutoUpdater.CheckForUpdateEvent += AutoUpdaterOnCheckForUpdateEvent;
             AutoUpdater.Start(url);
-            _hasCheckedForUpdates = true;
         }
         catch (Exception ex)
         {
             _logger.LogError(ex, "Check for updates failed.");
         }
     }
 
+    private async void AutoUpdaterOnCheckForUpdateEvent(UpdateInfoEventArgs args)
+    {
+        if (args == null)
+        {
+            _logger.LogWarning("Unable to check for updates at this time.");
+            return;
+        }
+
+        if (args.IsUpdateAvailable)
+        {
+            AutoUpdater.ShowUpdateForm(args);
+        }
+        else
+        {
+            await ShowNotificationAsync("No updates available.", TimeSpan.FromSeconds(3));
+        }
+    }
+
+    private async Task ShowNotificationAsync(string msg, TimeSpan delay)
+    {
+        NotificationMessage = msg;
+        IsNotificationOpen = true;
+        await Task.Delay(delay);
+        IsNotificationOpen = false;
+    }
+
     partial void OnThemeChanged(AppTheme value)
     {
         _userSettingsService.SetTheme(value);

src/UI/Views/SettingsPage.xaml

@@ -7,6 +7,7 @@
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
     xmlns:i="http://schemas.microsoft.com/xaml/behaviors"
     xmlns:iconPacks="http://metro.mahapps.com/winfx/xaml/iconpacks"
+    xmlns:mui="http://metro.mahapps.com/winfx/xaml/controls"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     xmlns:models="clr-namespace:CleanMyPosts.UI.Models"
     xmlns:properties="clr-namespace:CleanMyPosts.UI.Properties"
@@ -26,6 +27,24 @@
                 <RowDefinition Height="*" />
             </Grid.RowDefinitions>
 
+            <mui:Flyout
+                    x:Name="Notification"
+                    Width="300"
+                    Height="50"
+                    Margin="0"
+                    Padding="10"
+                    HorizontalAlignment="Center"
+                    VerticalAlignment="Top"
+                    AnimateOpacity="True"
+                    Background="{DynamicResource MahApps.Brushes.Control.Background}"
+                    CloseButtonVisibility="Hidden"
+                    Header="{Binding NotificationMessage}"
+                    IsModal="False"
+                    IsOpen="{Binding IsNotificationOpen}"
+                    Opacity="0.9"
+                    Position="Top"
+                    Theme="Inverse" />
+
             <TextBlock Style="{StaticResource PageTitleStyle}" Text="{x:Static properties:Resources.SettingsPageTitle}" />
 
             <StackPanel