Abstract update checker

ZuneModdingHelper/Controls/ZuneLightDialog.xaml

@@ -41,7 +41,8 @@
                 <Rectangle Height="5" Width="109" Margin="0,-16,0,0" Grid.ColumnSpan="2"
                            VerticalAlignment="Top" HorizontalAlignment="Left"
                            Fill="{StaticResource ZuneHorizontalGradientAlt}"/>
-                <TextBlock Text="{Binding Title}" d:Text="WINDOWS LIVE ID" FontSize="28" Margin="0,-10,0,12"
+                <TextBlock Text="{Binding Title}" d:Text="WINDOWS LIVE ID" FontSize="28"
+                           Grid.ColumnSpan="2" Margin="0,-10,0,12"
                            Foreground="{StaticResource ZuneMediumTextBrush}"
                            Visibility="{Binding Title, Converter={StaticResource NotNullToVis}}"/>
 

ZuneModdingHelper/Pages/AboutPage.xaml

@@ -38,6 +38,7 @@
             </TextBlock>
             <Button Content="CHECK FOR UPDATES" Click="UpdateCheckButton_Click"
                     Margin="0,8,0,12" Padding="8,0" HorizontalAlignment="Left"
+                    IsEnabled="{Binding EnableCheckForUpdates}"
                     Style="{StaticResource ActionButtonStyle}"/>
 
             <TextBlock Style="{StaticResource ZuneBodyTextBlockStyle}">

ZuneModdingHelper/Pages/AboutPage.xaml.cs

@@ -1,16 +1,13 @@
 using CommunityToolkit.Mvvm.DependencyInjection;
 using CommunityToolkit.Mvvm.Input;
 using CommunityToolkit.Mvvm.Messaging;
-using Octokit;
 using Syroot.Windows.IO;
 using System;
-using System.IO;
-using System.Linq;
 using System.Threading.Tasks;
 using System.Windows.Controls;
 using System.Windows.Navigation;
-using ZuneModCore;
 using ZuneModdingHelper.Messages;
+using ZuneModdingHelper.Services;
 
 namespace ZuneModdingHelper.Pages
 {
@@ -21,15 +18,18 @@ namespace ZuneModdingHelper.Pages
     {
         const string UPDATES_DIALOG_TITLE = "UPDATES";
 
-        private readonly IGitHubClient? _gitHub = Ioc.Default.GetService<IGitHubClient>();
-        private ReleaseAsset _latestAsset;
+        private readonly IUpdateService? _updateService = Ioc.Default.GetService<IUpdateService>();
+        private UpdateAvailableInfo _updateInfo;
         private string _downloadedUpdatePath;
 
         public AboutPage()
         {
+            DataContext = this;
             InitializeComponent();
         }
 
+        public bool EnableCheckForUpdates => _updateService is not null;
+
         private void Link_RequestNavigate(object sender, RequestNavigateEventArgs e)
         {
             App.OpenInBrowser(e.Uri.AbsoluteUri);
@@ -38,7 +38,7 @@ namespace ZuneModdingHelper.Pages
 
         private async void UpdateCheckButton_Click(object sender, System.Windows.RoutedEventArgs e)
         {
-            if (_gitHub is null)
+            if (_updateService is null)
                 return;
 
             WeakReferenceMessenger.Default.Send(new ShowDialogMessage(new ProgressDialogViewModel
@@ -51,16 +51,8 @@ namespace ZuneModdingHelper.Pages
 
             try
             {
-                // Get releases list from GitHub
-                // Why not use the `releases/latest` endpoint? Good question: https://github.com/octokit/octokit.net/issues/2916
-                var releases = await _gitHub.Repository.Release.GetAll("ZuneDev", "ZuneModdingHelper");
-                var latest = releases
-                    .Select(r => new { Release = r, Version = ReleaseVersion.Parse(r.TagName) })
-                    .OrderByDescending(t => t.Version)
-                    .ThenBy(t => t.Release.Prerelease)
-                    .First();
-
-                if (ReleaseVersion.TryParse(latest.Release.TagName, out var latestVer) || App.Version >= latestVer)
+                _updateInfo = await _updateService.FetchAvailableUpdate();
+                if (_updateInfo is null)
                 {
                     WeakReferenceMessenger.Default.Send<CloseDialogMessage>();
                     WeakReferenceMessenger.Default.Send(new ShowDialogMessage(new DialogViewModel
@@ -73,13 +65,12 @@ namespace ZuneModdingHelper.Pages
                 }
 
                 // Newer version available, prompt user to download
-                _latestAsset = latest.Release.Assets[0];
 
                 WeakReferenceMessenger.Default.Send<CloseDialogMessage>();
                 WeakReferenceMessenger.Default.Send(new ShowDialogMessage(new DialogViewModel
                 {
                     Title = UPDATES_DIALOG_TITLE,
-                    Description = $"Release {latest.Release.Name} is available. Would you like to download it now?",
+                    Description = $"Release {_updateInfo.Name} is available. Would you like to download it now?",
                     AffirmativeText = "YES",
                     NegativeText = "NO",
                     ShowAffirmativeButton = true,
@@ -107,30 +98,14 @@ namespace ZuneModdingHelper.Pages
                 IsIndeterminate = true,
                 ShowAffirmativeButton = false,
                 ShowNegativeButton = false,
-                Maximum = 100,
+                Maximum = 1.0,
             };
             WeakReferenceMessenger.Default.Send(new ShowDialogMessage(prog));
 
-            // Download new version to AppData
-            string downloadedFile = Path.Combine(Path.GetTempPath(), _latestAsset.Name);
-            if (File.Exists(downloadedFile)) File.Delete(downloadedFile);
-            using (var client = new System.Net.WebClient())
-            {
-                client.DownloadProgressChanged += (object sender, System.Net.DownloadProgressChangedEventArgs e) =>
-                {
-                    // Update UI with download progress
-                    prog.Progress = e.ProgressPercentage;
-                };
-
-                prog.Progress = 0;
-                prog.IsIndeterminate = false;
-                await client.DownloadFileTaskAsync(new Uri(_latestAsset.BrowserDownloadUrl), downloadedFile);
-            }
-
             // Ask user to save file
             Microsoft.Win32.SaveFileDialog saveFileDialog = new()
             {
-                FileName = _latestAsset.Name,
+                FileName = _updateInfo.Name,
                 InitialDirectory = new KnownFolder(KnownFolderType.Downloads).Path
             };
             bool dialogResult = saveFileDialog.ShowDialog() ?? false;
@@ -139,12 +114,17 @@ namespace ZuneModdingHelper.Pages
             if (dialogResult)
             {
                 _downloadedUpdatePath = saveFileDialog.FileName;
-                File.Copy(downloadedFile, _downloadedUpdatePath, true);
+
+                // Download new version to requested folder with progress updates
+                Progress<double> progress = new(p => prog.Progress = p);
+                prog.Progress = 0;
+                prog.IsIndeterminate = false;
+                await _updateService.DownloadUpdate(_updateInfo, _downloadedUpdatePath, progress);
 
                 WeakReferenceMessenger.Default.Send(new ShowDialogMessage(new DialogViewModel
                 {
                     Title = UPDATES_DIALOG_TITLE,
-                    Description = "Update downloaded. Would you like to install the new version?",
+                    Description = "Update downloaded. Would you like to launch the new version?",
                     AffirmativeText = "YES",
                     NegativeText = "NO",
                     ShowAffirmativeButton = true,
@@ -152,8 +132,6 @@ namespace ZuneModdingHelper.Pages
                     OnAction = new AsyncRelayCommand<bool>(OnLaunchUpdateDialogResult)
                 }));
             }
-
-            File.Delete(downloadedFile);
         }
 
         private async Task OnLaunchUpdateDialogResult(bool accepted)

ZuneModdingHelper/Services/GitHubReleasesUpdateService.cs

@@ -0,0 +1,67 @@
+using Octokit;
+using System;
+using System.IO;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using ZuneModCore;
+
+namespace ZuneModdingHelper.Services;
+
+public class GitHubReleasesUpdateService(IGitHubClient gitHub) : IUpdateService
+{
+    public async Task<UpdateAvailableInfo> FetchAvailableUpdate(CancellationToken token = default)
+    {
+        try
+        {
+            // Get releases list from GitHub
+            // Why not use the `releases/latest` endpoint? Good question: https://github.com/octokit/octokit.net/issues/2916
+            var releases = await gitHub.Repository.Release.GetAll("ZuneDev", "ZuneModdingHelper");
+
+            token.ThrowIfCancellationRequested();
+
+            var latest = releases
+                .Select(r => new GitHubUpdateAvailableInfo(r))
+                .OrderByDescending(t => t.Version)
+                .ThenBy(t => t.Release.Prerelease)
+                .First();
+
+            if (App.Version < latest.Version)
+                return latest;
+        }
+        catch { }
+
+        return null;
+    }
+
+    public async Task DownloadUpdate(UpdateAvailableInfo u, string downloadedFile, IProgress<double> progress, CancellationToken token = default)
+    {
+        if (u is not GitHubUpdateAvailableInfo update)
+            throw new ArgumentException("update");
+
+        if (File.Exists(downloadedFile))
+            File.Delete(downloadedFile);
+
+        using var client = new System.Net.WebClient();
+
+        client.DownloadProgressChanged += (sender, e) =>
+        {
+            // Update caller with download progress
+            progress.Report(e.ProgressPercentage / 100d);
+        };
+
+        // TODO: Select appropriate asset
+        var asset = update.Release.Assets[0];
+
+        await client.DownloadFileTaskAsync(new Uri(asset.BrowserDownloadUrl), downloadedFile);
+    }
+
+    private record GitHubUpdateAvailableInfo(string Name, ReleaseVersion Version, DateTimeOffset? ReleasedAt, Release Release)
+        : UpdateAvailableInfo(Name, Version, ReleasedAt)
+    {
+        public GitHubUpdateAvailableInfo(Release release)
+            : this(release.Name, ReleaseVersion.Parse(release.TagName), release.PublishedAt, release)
+        {
+        }
+    };
+}

ZuneModdingHelper/Services/IUpdateService.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using ZuneModCore;
+
+namespace ZuneModdingHelper.Services;
+
+public interface IUpdateService
+{
+    Task<UpdateAvailableInfo> FetchAvailableUpdate(CancellationToken token = default);
+
+    Task DownloadUpdate(UpdateAvailableInfo update, string destinationDirectory, IProgress<double> progress, CancellationToken token = default);
+}
+
+public record UpdateAvailableInfo(string Name, ReleaseVersion Version, DateTimeOffset? ReleasedAt);