add partial background downloading and update prompt

Blueberry/App.xaml.cs

@@ -53,10 +53,6 @@ namespace BlueMine
         /// </summary>
         private async void OnStartup(object sender, StartupEventArgs e)
         {
-#if !DEBUG
-            var update = new UpdateManager();
-            await update.CheckAndInstallAsync();
-#endif
             await _host.StartAsync();
             var mainWindow = _host.Services.GetRequiredService<MainWindow>();
             mainWindow.Show();

Blueberry/Constants.cs

@@ -28,5 +28,41 @@
             "Nem elszámolható hívások, email, chat",
             "Nem elszámolható telefon, chat, email kommunikáció",
         ];
+
+        public static readonly string UpdateScript = @"# Wait for the main app to close completely
+Start-Sleep -Seconds 2
+
+$exePath = '{currentExe}'
+$zipPath = '{tempZip}'
+$destDir = '{appDir}'
+
+# Retry logic for deletion (in case antivirus or OS holds the lock)
+$maxRetries = 10
+$retryCount = 0
+
+while ($retryCount -lt $maxRetries) {{
+    try {{
+        # Attempt to delete the old executable
+        if (Test-Path $exePath) {{ Remove-Item $exePath -Force -ErrorAction Stop }}
+        break # If successful, exit loop
+    }}
+    catch {{
+        Start-Sleep -Milliseconds 500
+        $retryCount++
+    }}
+}}
+
+# Unzip the new version
+Expand-Archive -Path $zipPath -DestinationPath $destDir -Force
+
+# CLEANUP: Delete the zip
+Remove-Item $zipPath -Force
+
+# RESTART: Launch the new executable
+# 'Start-Process' is the robust way to launch detached processes in PS
+Start-Process -FilePath $exePath -WorkingDirectory $destDir
+
+# SELF-DESTRUCT: Remove this script
+Remove-Item -LiteralPath $MyInvocation.MyCommand.Path -Force";
     }
 }

Blueberry/MainWindow.xaml

@@ -256,6 +256,15 @@
 
         <ui:ProgressRing x:Name="progressRing" Grid.Row="4" Height="10" Width="10" Margin="10" HorizontalAlignment="Left" IsIndeterminate="True" />
         <ui:TextBlock x:Name="statusTextBlock" Grid.Row="4" Grid.ColumnSpan="6" FontSize="8" Text="Staus: OK" Margin="30, 10, 10, 10" />
-        <ui:TextBlock x:Name="versionTextBlock" Grid.Row="4" Grid.Column="2" HorizontalAlignment="Right" FontSize="8" Text="0.0.0" Margin="10" />
+        <Grid Grid.Row="4" Grid.Column="2" >
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="1*" />
+                <ColumnDefinition Width="Auto" />
+                <ColumnDefinition Width="Auto" />
+            </Grid.ColumnDefinitions>
+            <ui:SymbolIcon x:Name="updateIcon" Symbol="ArrowCircleUp24" Grid.Column="1" Margin="10" Filled="True"
+                           Foreground="{ui:ThemeResource AccentTextFillColorPrimaryBrush}" Visibility="Hidden" />
+            <ui:TextBlock x:Name="versionTextBlock" Grid.Column="2" HorizontalAlignment="Right" FontSize="8" Text="0.0.0" Margin="10" />
+        </Grid>
     </Grid>
 </ui:FluentWindow>

Blueberry/MainWindow.xaml.cs

@@ -45,9 +45,35 @@ namespace BlueMine
                 Task getHoursTask = GetHours();
 
                 await Task.WhenAll(loadIssuesTask, getHoursTask);
+#if !DEBUG
+                if(await UpdateManager.IsUpdateAvailable())
+                {
+                    updateIcon.Visibility = Visibility.Visible;
+                    UpdateManager.DownloadCompleted += UpdateManager_DownloadCompleted;
+                    await UpdateManager.DownloadUpdateAsync();
+                }
+#endif
             }
         }
 
+        private async void UpdateManager_DownloadCompleted()
+        {
+            await Dispatcher.Invoke(async () =>
+            {
+                var result = await new Wpf.Ui.Controls.MessageBox
+                {
+                    Title = "Frissítés elérhető",
+                    Content = "Szeretnél most frissíteni?",
+                    PrimaryButtonText = "Frissítés",
+                    SecondaryButtonText = "Később",
+                    IsCloseButtonEnabled = false,
+                }.ShowDialogAsync();
+
+                if (result == Wpf.Ui.Controls.MessageBoxResult.Primary)
+                    await UpdateManager.PerformUpdate();
+            });
+        }
+
         private void CalendarButtonClicked(object sender, RoutedEventArgs e)
         {
             flyoutCalendar.IsOpen = true;

Blueberry/UpdateManager.cs

@@ -2,33 +2,69 @@
 using System.IO;
 using System.Net.Http;
 using System.Text.Json;
+using Windows.Media.Protection.PlayReady;
 
 namespace Blueberry
 {
-    public class UpdateManager
+    public static class UpdateManager
     {
         private const string releaseUrl = "https://git.technopunk.space/api/v1/repos/tomi/Blueberry/releases/latest";
-        public const string CurrentVersion = "0.1.1";
+        public const string CurrentVersion = "0.1.2";
+        private static readonly string AppDir = AppDomain.CurrentDomain.BaseDirectory;
+        private static readonly HttpClient client = new();
+        public delegate void DownloadCompletedEventArgs();
+        public static event DownloadCompletedEventArgs DownloadCompleted;
+        private static bool isDownloading = false;
 
-        public async Task CheckAndInstallAsync()
+        public static async Task<bool> IsUpdateAvailable()
         {
-            using var client = new HttpClient();
+            var json = await client.GetStringAsync(releaseUrl);
+            var release = JsonSerializer.Deserialize<Root>(json);
+            return release != null && release.tag_name != CurrentVersion;
+        }
 
+        public static async Task DownloadUpdateAsync()
+        {
             client.DefaultRequestHeaders.Add("User-Agent", "Blueberry-Updater");
 
             try
             {
-                var json = client.GetStringAsync(releaseUrl).ConfigureAwait(false).GetAwaiter().GetResult();
+                // 1. Use await here, don't block
+                var json = await client.GetStringAsync(releaseUrl);
                 var release = JsonSerializer.Deserialize<Root>(json);
 
-                if (release == null)
+                if (release == null) return;
-                    throw new NullReferenceException();
 
                 if (release.tag_name != CurrentVersion)
                 {
-                    var file = release.assets.Find(x => x.name.Contains(".zip")) ?? throw new NullReferenceException();
+                    var file = release.assets.Find(x => x.name.Contains(".zip"));
-                    string downloadUrl = file.browser_download_url;
+                    if (file == null) return;
-                    await PerformUpdate(client, downloadUrl);
+
+                    string zipPath = Path.Combine(AppDir, "blueberry_update.zip");
+                    long offset = 0;
+
+                    if (File.Exists(zipPath))
+                    {
+                        long localSize = new FileInfo(zipPath).Length;
+
+                        if (localSize == file.size)
+                        {
+                            DownloadCompleted?.Invoke();
+                            return;
+                        }
+
+                        if (localSize > file.size)
+                        {
+                            File.Delete(zipPath);
+                            offset = 0;
+                        }
+                        else
+                        {
+                            offset = localSize;
+                        }
+                    }
+                    if (!isDownloading)
+                        await Download(client, file.browser_download_url, offset);
                 }
             }
             catch (Exception)
@@ -37,55 +73,45 @@ namespace Blueberry
             }
         }
 
-        private async Task PerformUpdate(HttpClient client, string url)
+        private static async Task Download(HttpClient client, string url, long offset = 0)
+        {
+            try
+            {
+                isDownloading = true;
+                var request = new HttpRequestMessage(HttpMethod.Get, url);
+
+                // If we have an offset, ask the server for the rest of the file
+                if (offset > 0)
+                {
+                    request.Headers.Range = new System.Net.Http.Headers.RangeHeaderValue(offset, null);
+                }
+
+                using var response = await client.SendAsync(request, HttpCompletionOption.ResponseHeadersRead);
+                response.EnsureSuccessStatusCode();
+
+                // If offset > 0, we APPEND. If 0, we CREATE/OVERWRITE.
+                var fileMode = offset > 0 ? FileMode.Append : FileMode.Create;
+                string filePath = Path.Combine(AppDir, "blueberry_update.zip");
+
+                using var contentStream = await response.Content.ReadAsStreamAsync();
+                using var fileStream = new FileStream(filePath, fileMode, FileAccess.Write, FileShare.None);
+
+                await contentStream.CopyToAsync(fileStream);
+                isDownloading = false;
+                DownloadCompleted?.Invoke();
+            } catch (Exception)
+            {
+                isDownloading = false;
+            }
+        }
+
+        public static async Task PerformUpdate()
         {
             string tempZip = Path.Combine(Path.GetTempPath(), "blueberry_update.zip");
             string currentExe = Process.GetCurrentProcess().MainModule.FileName;
             string appDir = AppDomain.CurrentDomain.BaseDirectory;
 
-            // 1. Download
+            string psScript = Constants.UpdateScript;
-            var data = await client.GetByteArrayAsync(url);
-            File.WriteAllBytes(tempZip, data);
-
-            // 2. Create a temporary batch script to handle the swap
-            // We use a small delay (timeout) to allow the main app to close fully
-            string psScript = $@"
-# Wait for the main app to close completely
-Start-Sleep -Seconds 2
-
-$exePath = '{currentExe}'
-$zipPath = '{tempZip}'
-$destDir = '{appDir}'
-
-# Retry logic for deletion (in case antivirus or OS holds the lock)
-$maxRetries = 10
-$retryCount = 0
-
-while ($retryCount -lt $maxRetries) {{
-    try {{
-        # Attempt to delete the old executable
-        if (Test-Path $exePath) {{ Remove-Item $exePath -Force -ErrorAction Stop }}
-        break # If successful, exit loop
-    }}
-    catch {{
-        Start-Sleep -Milliseconds 500
-        $retryCount++
-    }}
-}}
-
-# Unzip the new version
-Expand-Archive -Path $zipPath -DestinationPath $destDir -Force
-
-# CLEANUP: Delete the zip
-Remove-Item $zipPath -Force
-
-# RESTART: Launch the new executable
-# 'Start-Process' is the robust way to launch detached processes in PS
-Start-Process -FilePath $exePath -WorkingDirectory $destDir
-
-# SELF-DESTRUCT: Remove this script
-Remove-Item -LiteralPath $MyInvocation.MyCommand.Path -Force
-";
             string psPath = Path.Combine(Path.GetTempPath(), "blueberry_updater.ps1");
             File.WriteAllText(psPath, psScript);
 
@@ -114,6 +140,7 @@ Remove-Item -LiteralPath $MyInvocation.MyCommand.Path -Force
         public class Asset
         {
             public string name { get; set; }
+            public long size { get; set; }
             public string browser_download_url { get; set; }
         }
     }