infra: Make Avalonia the default UI (#6375)

* misc: Move Ryujinx project to Ryujinx.Gtk3

This breaks release CI for now but that's fine.

Signed-off-by: Mary Guillemard <mary@mary.zone>

* misc: Move Ryujinx.Ava project to Ryujinx

This breaks CI for now, but it's fine.

Signed-off-by: Mary Guillemard <mary@mary.zone>

* infra: Make Avalonia the default UI

Should fix CI after the previous changes.

GTK3 isn't build by the release job anymore, only by PR CI.

This also ensure that the test-ava update package is still generated to
allow update from the old testing channel.

Signed-off-by: Mary Guillemard <mary@mary.zone>

* Fix missing copy in create_app_bundle.sh

Signed-off-by: Mary Guillemard <mary@mary.zone>

* Fix syntax error

Signed-off-by: Mary Guillemard <mary@mary.zone>

---------

Signed-off-by: Mary Guillemard <mary@mary.zone>

3 files changed, 844 insertions, 0 deletions

diff --git a/src/Ryujinx.Gtk3/Modules/Updater/UpdateDialog.cs b/src/Ryujinx.Gtk3/Modules/Updater/UpdateDialog.cs
new file mode 100644
index 00000000..43bde942
--- /dev/null
+++ b/src/Ryujinx.Gtk3/Modules/Updater/UpdateDialog.cs
@@ -0,0 +1,95 @@
+using Gdk;
+using Gtk;
+using Ryujinx.Common;
+using Ryujinx.Common.Configuration;
+using Ryujinx.UI;
+using Ryujinx.UI.Common.Configuration;
+using Ryujinx.UI.Common.Helper;
+using System;
+using System.Diagnostics;
+using System.Reflection;
+
+namespace Ryujinx.Modules
+{
+    public class UpdateDialog : Gtk.Window
+    {
+#pragma warning disable CS0649, IDE0044 // Field is never assigned to, Add readonly modifier
+        [Builder.Object] public Label MainText;
+        [Builder.Object] public Label SecondaryText;
+        [Builder.Object] public LevelBar ProgressBar;
+        [Builder.Object] public Button YesButton;
+        [Builder.Object] public Button NoButton;
+#pragma warning restore CS0649, IDE0044
+
+        private readonly MainWindow _mainWindow;
+        private readonly string _buildUrl;
+        private bool _restartQuery;
+
+        public UpdateDialog(MainWindow mainWindow, Version newVersion, string buildUrl) : this(new Builder("Ryujinx.Gtk3.Modules.Updater.UpdateDialog.glade"), mainWindow, newVersion, buildUrl) { }
+
+        private UpdateDialog(Builder builder, MainWindow mainWindow, Version newVersion, string buildUrl) : base(builder.GetRawOwnedObject("UpdateDialog"))
+        {
+            builder.Autoconnect(this);
+
+            _mainWindow = mainWindow;
+            _buildUrl = buildUrl;
+
+            Icon = new Pixbuf(Assembly.GetAssembly(typeof(ConfigurationState)), "Ryujinx.Gtk3.UI.Common.Resources.Logo_Ryujinx.png");
+            MainText.Text = "Do you want to update Ryujinx to the latest version?";
+            SecondaryText.Text = $"{Program.Version} -> {newVersion}";
+
+            ProgressBar.Hide();
+
+            YesButton.Clicked += YesButton_Clicked;
+            NoButton.Clicked += NoButton_Clicked;
+        }
+
+        private void YesButton_Clicked(object sender, EventArgs args)
+        {
+            if (_restartQuery)
+            {
+                string ryuName = OperatingSystem.IsWindows() ? "Ryujinx.exe" : "Ryujinx";
+
+                ProcessStartInfo processStart = new(ryuName)
+                {
+                    UseShellExecute = true,
+                    WorkingDirectory = AppDomain.CurrentDomain.BaseDirectory
+                };
+
+                foreach (string argument in CommandLineState.Arguments)
+                {
+                    processStart.ArgumentList.Add(argument);
+                }
+
+                Process.Start(processStart);
+
+                Environment.Exit(0);
+            }
+            else
+            {
+                Window.Functions = _mainWindow.Window.Functions = WMFunction.All & WMFunction.Close;
+                _mainWindow.ExitMenuItem.Sensitive = false;
+
+                YesButton.Hide();
+                NoButton.Hide();
+                ProgressBar.Show();
+
+                SecondaryText.Text = "";
+                _restartQuery = true;
+
+                Updater.UpdateRyujinx(this, _buildUrl);
+            }
+        }
+
+        private void NoButton_Clicked(object sender, EventArgs args)
+        {
+            Updater.Running = false;
+            _mainWindow.Window.Functions = WMFunction.All;
+
+            _mainWindow.ExitMenuItem.Sensitive = true;
+            _mainWindow.UpdateMenuItem.Sensitive = true;
+
+            Dispose();
+        }
+    }
+}
diff --git a/src/Ryujinx.Gtk3/Modules/Updater/UpdateDialog.glade b/src/Ryujinx.Gtk3/Modules/Updater/UpdateDialog.glade
new file mode 100644
index 00000000..cc80167e
--- /dev/null
+++ b/src/Ryujinx.Gtk3/Modules/Updater/UpdateDialog.glade
@@ -0,0 +1,127 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Generated with glade 3.22.1 -->
+<interface>
+  <requires lib="gtk+" version="3.20"/>
+  <object class="GtkWindow" id="UpdateDialog">
+    <property name="can_focus">False</property>
+    <property name="title" translatable="yes">Ryujinx - Updater</property>
+    <property name="resizable">False</property>
+    <property name="window_position">center</property>
+    <property name="default_width">400</property>
+    <property name="default_height">130</property>
+    <child>
+      <placeholder/>
+    </child>
+    <child>
+      <object class="GtkBox" id="MainBox">
+        <property name="visible">True</property>
+        <property name="can_focus">False</property>
+        <property name="margin_left">10</property>
+        <property name="margin_right">10</property>
+        <property name="margin_top">10</property>
+        <property name="margin_bottom">10</property>
+        <property name="orientation">vertical</property>
+        <child>
+          <object class="GtkBox" id="BodyBox">
+            <property name="visible">True</property>
+            <property name="can_focus">False</property>
+            <property name="orientation">vertical</property>
+            <child>
+              <object class="GtkLabel" id="MainText">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="margin_top">5</property>
+                <property name="margin_bottom">5</property>
+                <attributes>
+                  <attribute name="weight" value="bold"/>
+                  <attribute name="size" value="10000"/>
+                </attributes>
+              </object>
+              <packing>
+                <property name="expand">False</property>
+                <property name="fill">True</property>
+                <property name="position">0</property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkLabel" id="SecondaryText">
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="margin_top">5</property>
+                <property name="margin_bottom">5</property>
+              </object>
+              <packing>
+                <property name="expand">False</property>
+                <property name="fill">True</property>
+                <property name="position">1</property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkLevelBar" id="ProgressBar">
+                <property name="height_request">20</property>
+                <property name="visible">True</property>
+                <property name="can_focus">False</property>
+                <property name="margin_top">5</property>
+                <property name="margin_bottom">5</property>
+                <property name="max_value">100</property>
+              </object>
+              <packing>
+                <property name="expand">False</property>
+                <property name="fill">True</property>
+                <property name="position">2</property>
+              </packing>
+            </child>
+          </object>
+          <packing>
+            <property name="expand">True</property>
+            <property name="fill">True</property>
+            <property name="position">0</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkBox" id="ButtonBox">
+            <property name="visible">True</property>
+            <property name="can_focus">False</property>
+            <child>
+              <object class="GtkButton" id="YesButton">
+                <property name="label" translatable="yes">Yes</property>
+                <property name="visible">True</property>
+                <property name="can_focus">True</property>
+                <property name="receives_default">True</property>
+                <property name="margin_right">5</property>
+                <property name="margin_top">5</property>
+                <property name="margin_bottom">5</property>
+              </object>
+              <packing>
+                <property name="expand">True</property>
+                <property name="fill">True</property>
+                <property name="position">0</property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkButton" id="NoButton">
+                <property name="label" translatable="yes">No</property>
+                <property name="visible">True</property>
+                <property name="can_focus">True</property>
+                <property name="receives_default">True</property>
+                <property name="margin_left">5</property>
+                <property name="margin_top">5</property>
+                <property name="margin_bottom">5</property>
+              </object>
+              <packing>
+                <property name="expand">True</property>
+                <property name="fill">True</property>
+                <property name="position">1</property>
+              </packing>
+            </child>
+          </object>
+          <packing>
+            <property name="expand">False</property>
+            <property name="fill">True</property>
+            <property name="position">1</property>
+          </packing>
+        </child>
+      </object>
+    </child>
+  </object>
+</interface>
diff --git a/src/Ryujinx.Gtk3/Modules/Updater/Updater.cs b/src/Ryujinx.Gtk3/Modules/Updater/Updater.cs
new file mode 100644
index 00000000..8b006f63
--- /dev/null
+++ b/src/Ryujinx.Gtk3/Modules/Updater/Updater.cs
@@ -0,0 +1,622 @@
+using Gtk;
+using ICSharpCode.SharpZipLib.GZip;
+using ICSharpCode.SharpZipLib.Tar;
+using ICSharpCode.SharpZipLib.Zip;
+using Ryujinx.Common;
+using Ryujinx.Common.Logging;
+using Ryujinx.Common.Utilities;
+using Ryujinx.UI;
+using Ryujinx.UI.Common.Models.Github;
+using Ryujinx.UI.Widgets;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Net;
+using System.Net.Http;
+using System.Net.NetworkInformation;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Ryujinx.Modules
+{
+    public static class Updater
+    {
+        private const string GitHubApiUrl = "https://api.github.com";
+        private const int ConnectionCount = 4;
+
+        internal static bool Running;
+
+        private static readonly string _homeDir = AppDomain.CurrentDomain.BaseDirectory;
+        private static readonly string _updateDir = Path.Combine(Path.GetTempPath(), "Ryujinx", "update");
+        private static readonly string _updatePublishDir = Path.Combine(_updateDir, "publish");
+
+        private static string _buildVer;
+        private static string _platformExt;
+        private static string _buildUrl;
+        private static long _buildSize;
+
+        private static readonly GithubReleasesJsonSerializerContext _serializerContext = new(JsonHelper.GetDefaultSerializerOptions());
+
+        // On Windows, GtkSharp.Dependencies adds these extra dirs that must be cleaned during updates.
+        private static readonly string[] _windowsDependencyDirs = { "bin", "etc", "lib", "share" };
+
+        private static HttpClient ConstructHttpClient()
+        {
+            HttpClient result = new();
+
+            // Required by GitHub to interact with APIs.
+            result.DefaultRequestHeaders.Add("User-Agent", "Ryujinx-Updater/1.0.0");
+
+            return result;
+        }
+
+        public static async Task BeginParse(MainWindow mainWindow, bool showVersionUpToDate)
+        {
+            if (Running)
+            {
+                return;
+            }
+
+            Running = true;
+            mainWindow.UpdateMenuItem.Sensitive = false;
+
+            int artifactIndex = -1;
+
+            // Detect current platform
+            if (OperatingSystem.IsMacOS())
+            {
+                _platformExt = "osx_x64.zip";
+                artifactIndex = 1;
+            }
+            else if (OperatingSystem.IsWindows())
+            {
+                _platformExt = "win_x64.zip";
+                artifactIndex = 2;
+            }
+            else if (OperatingSystem.IsLinux())
+            {
+                var arch = RuntimeInformation.OSArchitecture == Architecture.Arm64 ? "arm64" : "x64";
+                _platformExt = $"linux_{arch}.tar.gz";
+                artifactIndex = 0;
+            }
+
+            if (artifactIndex == -1)
+            {
+                GtkDialog.CreateErrorDialog("Your platform is not supported!");
+
+                return;
+            }
+
+            Version newVersion;
+            Version currentVersion;
+
+            try
+            {
+                currentVersion = Version.Parse(Program.Version);
+            }
+            catch
+            {
+                GtkDialog.CreateWarningDialog("Failed to convert the current Ryujinx version.", "Cancelling Update!");
+                Logger.Error?.Print(LogClass.Application, "Failed to convert the current Ryujinx version!");
+
+                return;
+            }
+
+            // Get latest version number from GitHub API
+            try
+            {
+                using HttpClient jsonClient = ConstructHttpClient();
+                string buildInfoUrl = $"{GitHubApiUrl}/repos/{ReleaseInformation.ReleaseChannelOwner}/{ReleaseInformation.ReleaseChannelRepo}/releases/latest";
+
+                // Fetch latest build information
+                string fetchedJson = await jsonClient.GetStringAsync(buildInfoUrl);
+                var fetched = JsonHelper.Deserialize(fetchedJson, _serializerContext.GithubReleasesJsonResponse);
+                _buildVer = fetched.Name;
+
+                foreach (var asset in fetched.Assets)
+                {
+                    if (asset.Name.StartsWith("gtk-ryujinx") && asset.Name.EndsWith(_platformExt))
+                    {
+                        _buildUrl = asset.BrowserDownloadUrl;
+
+                        if (asset.State != "uploaded")
+                        {
+                            if (showVersionUpToDate)
+                            {
+                                GtkDialog.CreateUpdaterInfoDialog("You are already using the latest version of Ryujinx!", "");
+                            }
+
+                            return;
+                        }
+
+                        break;
+                    }
+                }
+
+                if (_buildUrl == null)
+                {
+                    if (showVersionUpToDate)
+                    {
+                        GtkDialog.CreateUpdaterInfoDialog("You are already using the latest version of Ryujinx!", "");
+                    }
+
+                    return;
+                }
+            }
+            catch (Exception exception)
+            {
+                Logger.Error?.Print(LogClass.Application, exception.Message);
+                GtkDialog.CreateErrorDialog("An error occurred when trying to get release information from GitHub Release. This can be caused if a new release is being compiled by GitHub Actions. Try again in a few minutes.");
+
+                return;
+            }
+
+            try
+            {
+                newVersion = Version.Parse(_buildVer);
+            }
+            catch
+            {
+                GtkDialog.CreateWarningDialog("Failed to convert the received Ryujinx version from GitHub Release.", "Cancelling Update!");
+                Logger.Error?.Print(LogClass.Application, "Failed to convert the received Ryujinx version from GitHub Release!");
+
+                return;
+            }
+
+            if (newVersion <= currentVersion)
+            {
+                if (showVersionUpToDate)
+                {
+                    GtkDialog.CreateUpdaterInfoDialog("You are already using the latest version of Ryujinx!", "");
+                }
+
+                Running = false;
+                mainWindow.UpdateMenuItem.Sensitive = true;
+
+                return;
+            }
+
+            // Fetch build size information to learn chunk sizes.
+            using HttpClient buildSizeClient = ConstructHttpClient();
+            try
+            {
+                buildSizeClient.DefaultRequestHeaders.Add("Range", "bytes=0-0");
+
+                HttpResponseMessage message = await buildSizeClient.GetAsync(new Uri(_buildUrl), HttpCompletionOption.ResponseHeadersRead);
+
+                _buildSize = message.Content.Headers.ContentRange.Length.Value;
+            }
+            catch (Exception ex)
+            {
+                Logger.Warning?.Print(LogClass.Application, ex.Message);
+                Logger.Warning?.Print(LogClass.Application, "Couldn't determine build size for update, using single-threaded updater");
+
+                _buildSize = -1;
+            }
+
+            // Show a message asking the user if they want to update
+            UpdateDialog updateDialog = new(mainWindow, newVersion, _buildUrl);
+            updateDialog.Show();
+        }
+
+        public static void UpdateRyujinx(UpdateDialog updateDialog, string downloadUrl)
+        {
+            // Empty update dir, although it shouldn't ever have anything inside it
+            if (Directory.Exists(_updateDir))
+            {
+                Directory.Delete(_updateDir, true);
+            }
+
+            Directory.CreateDirectory(_updateDir);
+
+            string updateFile = Path.Combine(_updateDir, "update.bin");
+
+            // Download the update .zip
+            updateDialog.MainText.Text = "Downloading Update...";
+            updateDialog.ProgressBar.Value = 0;
+            updateDialog.ProgressBar.MaxValue = 100;
+
+            if (_buildSize >= 0)
+            {
+                DoUpdateWithMultipleThreads(updateDialog, downloadUrl, updateFile);
+            }
+            else
+            {
+                DoUpdateWithSingleThread(updateDialog, downloadUrl, updateFile);
+            }
+        }
+
+        private static void DoUpdateWithMultipleThreads(UpdateDialog updateDialog, string downloadUrl, string updateFile)
+        {
+            // Multi-Threaded Updater
+            long chunkSize = _buildSize / ConnectionCount;
+            long remainderChunk = _buildSize % ConnectionCount;
+
+            int completedRequests = 0;
+            int totalProgressPercentage = 0;
+            int[] progressPercentage = new int[ConnectionCount];
+
+            List<byte[]> list = new(ConnectionCount);
+            List<WebClient> webClients = new(ConnectionCount);
+
+            for (int i = 0; i < ConnectionCount; i++)
+            {
+                list.Add(Array.Empty<byte>());
+            }
+
+            for (int i = 0; i < ConnectionCount; i++)
+            {
+#pragma warning disable SYSLIB0014
+                // TODO: WebClient is obsolete and need to be replaced with a more complex logic using HttpClient.
+                using WebClient client = new();
+#pragma warning restore SYSLIB0014
+                webClients.Add(client);
+
+                if (i == ConnectionCount - 1)
+                {
+                    client.Headers.Add("Range", $"bytes={chunkSize * i}-{(chunkSize * (i + 1) - 1) + remainderChunk}");
+                }
+                else
+                {
+                    client.Headers.Add("Range", $"bytes={chunkSize * i}-{chunkSize * (i + 1) - 1}");
+                }
+
+                client.DownloadProgressChanged += (_, args) =>
+                {
+                    int index = (int)args.UserState;
+
+                    Interlocked.Add(ref totalProgressPercentage, -1 * progressPercentage[index]);
+                    Interlocked.Exchange(ref progressPercentage[index], args.ProgressPercentage);
+                    Interlocked.Add(ref totalProgressPercentage, args.ProgressPercentage);
+
+                    updateDialog.ProgressBar.Value = totalProgressPercentage / ConnectionCount;
+                };
+
+                client.DownloadDataCompleted += (_, args) =>
+                {
+                    int index = (int)args.UserState;
+
+                    if (args.Cancelled)
+                    {
+                        webClients[index].Dispose();
+
+                        return;
+                    }
+
+                    list[index] = args.Result;
+                    Interlocked.Increment(ref completedRequests);
+
+                    if (Equals(completedRequests, ConnectionCount))
+                    {
+                        byte[] mergedFileBytes = new byte[_buildSize];
+                        for (int connectionIndex = 0, destinationOffset = 0; connectionIndex < ConnectionCount; connectionIndex++)
+                        {
+                            Array.Copy(list[connectionIndex], 0, mergedFileBytes, destinationOffset, list[connectionIndex].Length);
+                            destinationOffset += list[connectionIndex].Length;
+                        }
+
+                        File.WriteAllBytes(updateFile, mergedFileBytes);
+
+                        try
+                        {
+                            InstallUpdate(updateDialog, updateFile);
+                        }
+                        catch (Exception e)
+                        {
+                            Logger.Warning?.Print(LogClass.Application, e.Message);
+                            Logger.Warning?.Print(LogClass.Application, "Multi-Threaded update failed, falling back to single-threaded updater.");
+
+                            DoUpdateWithSingleThread(updateDialog, downloadUrl, updateFile);
+
+                            return;
+                        }
+                    }
+                };
+
+                try
+                {
+                    client.DownloadDataAsync(new Uri(downloadUrl), i);
+                }
+                catch (WebException ex)
+                {
+                    Logger.Warning?.Print(LogClass.Application, ex.Message);
+                    Logger.Warning?.Print(LogClass.Application, "Multi-Threaded update failed, falling back to single-threaded updater.");
+
+                    foreach (WebClient webClient in webClients)
+                    {
+                        webClient.CancelAsync();
+                    }
+
+                    DoUpdateWithSingleThread(updateDialog, downloadUrl, updateFile);
+
+                    return;
+                }
+            }
+        }
+
+        private static void DoUpdateWithSingleThreadWorker(UpdateDialog updateDialog, string downloadUrl, string updateFile)
+        {
+            using HttpClient client = new();
+            // We do not want to timeout while downloading
+            client.Timeout = TimeSpan.FromDays(1);
+
+            using HttpResponseMessage response = client.GetAsync(downloadUrl, HttpCompletionOption.ResponseHeadersRead).Result;
+            using Stream remoteFileStream = response.Content.ReadAsStreamAsync().Result;
+            using Stream updateFileStream = File.Open(updateFile, FileMode.Create);
+
+            long totalBytes = response.Content.Headers.ContentLength.Value;
+            long byteWritten = 0;
+
+            byte[] buffer = new byte[32 * 1024];
+
+            while (true)
+            {
+                int readSize = remoteFileStream.Read(buffer);
+
+                if (readSize == 0)
+                {
+                    break;
+                }
+
+                byteWritten += readSize;
+
+                updateDialog.ProgressBar.Value = ((double)byteWritten / totalBytes) * 100;
+                updateFileStream.Write(buffer, 0, readSize);
+            }
+
+            InstallUpdate(updateDialog, updateFile);
+        }
+
+        private static void DoUpdateWithSingleThread(UpdateDialog updateDialog, string downloadUrl, string updateFile)
+        {
+            Thread worker = new(() => DoUpdateWithSingleThreadWorker(updateDialog, downloadUrl, updateFile))
+            {
+                Name = "Updater.SingleThreadWorker",
+            };
+            worker.Start();
+        }
+
+        private static async void InstallUpdate(UpdateDialog updateDialog, string updateFile)
+        {
+            // Extract Update
+            updateDialog.MainText.Text = "Extracting Update...";
+            updateDialog.ProgressBar.Value = 0;
+
+            if (OperatingSystem.IsLinux())
+            {
+                using Stream inStream = File.OpenRead(updateFile);
+                using Stream gzipStream = new GZipInputStream(inStream);
+                using TarInputStream tarStream = new(gzipStream, Encoding.ASCII);
+                updateDialog.ProgressBar.MaxValue = inStream.Length;
+
+                await Task.Run(() =>
+                {
+                    TarEntry tarEntry;
+
+                    if (!OperatingSystem.IsWindows())
+                    {
+                        while ((tarEntry = tarStream.GetNextEntry()) != null)
+                        {
+                            if (tarEntry.IsDirectory)
+                            {
+                                continue;
+                            }
+
+                            string outPath = Path.Combine(_updateDir, tarEntry.Name);
+
+                            Directory.CreateDirectory(Path.GetDirectoryName(outPath));
+
+                            using FileStream outStream = File.OpenWrite(outPath);
+                            tarStream.CopyEntryContents(outStream);
+
+                            File.SetUnixFileMode(outPath, (UnixFileMode)tarEntry.TarHeader.Mode);
+                            File.SetLastWriteTime(outPath, DateTime.SpecifyKind(tarEntry.ModTime, DateTimeKind.Utc));
+
+                            TarEntry entry = tarEntry;
+
+                            Application.Invoke(delegate
+                            {
+                                updateDialog.ProgressBar.Value += entry.Size;
+                            });
+                        }
+                    }
+                });
+
+                updateDialog.ProgressBar.Value = inStream.Length;
+            }
+            else
+            {
+                using Stream inStream = File.OpenRead(updateFile);
+                using ZipFile zipFile = new(inStream);
+                updateDialog.ProgressBar.MaxValue = zipFile.Count;
+
+                await Task.Run(() =>
+                {
+                    foreach (ZipEntry zipEntry in zipFile)
+                    {
+                        if (zipEntry.IsDirectory)
+                        {
+                            continue;
+                        }
+
+                        string outPath = Path.Combine(_updateDir, zipEntry.Name);
+
+                        Directory.CreateDirectory(Path.GetDirectoryName(outPath));
+
+                        using Stream zipStream = zipFile.GetInputStream(zipEntry);
+                        using FileStream outStream = File.OpenWrite(outPath);
+                        zipStream.CopyTo(outStream);
+
+                        File.SetLastWriteTime(outPath, DateTime.SpecifyKind(zipEntry.DateTime, DateTimeKind.Utc));
+
+                        Application.Invoke(delegate
+                        {
+                            updateDialog.ProgressBar.Value++;
+                        });
+                    }
+                });
+            }
+
+            // Delete downloaded zip
+            File.Delete(updateFile);
+
+            List<string> allFiles = EnumerateFilesToDelete().ToList();
+
+            updateDialog.MainText.Text = "Renaming Old Files...";
+            updateDialog.ProgressBar.Value = 0;
+            updateDialog.ProgressBar.MaxValue = allFiles.Count;
+
+            // Replace old files
+            await Task.Run(() =>
+            {
+                foreach (string file in allFiles)
+                {
+                    try
+                    {
+                        File.Move(file, file + ".ryuold");
+
+                        Application.Invoke(delegate
+                        {
+                            updateDialog.ProgressBar.Value++;
+                        });
+                    }
+                    catch
+                    {
+                        Logger.Warning?.Print(LogClass.Application, "Updater was unable to rename file: " + file);
+                    }
+                }
+
+                Application.Invoke(delegate
+                {
+                    updateDialog.MainText.Text = "Adding New Files...";
+                    updateDialog.ProgressBar.Value = 0;
+                    updateDialog.ProgressBar.MaxValue = Directory.GetFiles(_updatePublishDir, "*", SearchOption.AllDirectories).Length;
+                });
+
+                MoveAllFilesOver(_updatePublishDir, _homeDir, updateDialog);
+            });
+
+            Directory.Delete(_updateDir, true);
+
+            updateDialog.MainText.Text = "Update Complete!";
+            updateDialog.SecondaryText.Text = "Do you want to restart Ryujinx now?";
+            updateDialog.Modal = true;
+
+            updateDialog.ProgressBar.Hide();
+            updateDialog.YesButton.Show();
+            updateDialog.NoButton.Show();
+        }
+
+        public static bool CanUpdate(bool showWarnings)
+        {
+#if !DISABLE_UPDATER
+            if (!NetworkInterface.GetIsNetworkAvailable())
+            {
+                if (showWarnings)
+                {
+                    GtkDialog.CreateWarningDialog("You are not connected to the Internet!", "Please verify that you have a working Internet connection!");
+                }
+
+                return false;
+            }
+
+            if (Program.Version.Contains("dirty") || !ReleaseInformation.IsValid)
+            {
+                if (showWarnings)
+                {
+                    GtkDialog.CreateWarningDialog("You cannot update a Dirty build of Ryujinx!", "Please download Ryujinx at https://ryujinx.org/ if you are looking for a supported version.");
+                }
+
+                return false;
+            }
+
+            return true;
+#else
+            if (showWarnings)
+            {
+                if (ReleaseInformation.IsFlatHubBuild)
+                {
+                    GtkDialog.CreateWarningDialog("Updater Disabled!", "Please update Ryujinx via FlatHub.");
+                }
+                else
+                {
+                    GtkDialog.CreateWarningDialog("Updater Disabled!", "Please download Ryujinx at https://ryujinx.org/ if you are looking for a supported version.");
+                }
+            }
+
+            return false;
+#endif
+        }
+
+        // NOTE: This method should always reflect the latest build layout.
+        private static IEnumerable<string> EnumerateFilesToDelete()
+        {
+            var files = Directory.EnumerateFiles(_homeDir); // All files directly in base dir.
+
+            // Determine and exclude user files only when the updater is running, not when cleaning old files
+            if (Running)
+            {
+                // Compare the loose files in base directory against the loose files from the incoming update, and store foreign ones in a user list.
+                var oldFiles = Directory.EnumerateFiles(_homeDir, "*", SearchOption.TopDirectoryOnly).Select(Path.GetFileName);
+                var newFiles = Directory.EnumerateFiles(_updatePublishDir, "*", SearchOption.TopDirectoryOnly).Select(Path.GetFileName);
+                var userFiles = oldFiles.Except(newFiles).Select(filename => Path.Combine(_homeDir, filename));
+
+                // Remove user files from the paths in files.
+                files = files.Except(userFiles);
+            }
+
+            if (OperatingSystem.IsWindows())
+            {
+                foreach (string dir in _windowsDependencyDirs)
+                {
+                    string dirPath = Path.Combine(_homeDir, dir);
+                    if (Directory.Exists(dirPath))
+                    {
+                        files = files.Concat(Directory.EnumerateFiles(dirPath, "*", SearchOption.AllDirectories));
+                    }
+                }
+            }
+
+            return files.Where(f => !new FileInfo(f).Attributes.HasFlag(FileAttributes.Hidden | FileAttributes.System));
+        }
+
+        private static void MoveAllFilesOver(string root, string dest, UpdateDialog dialog)
+        {
+            foreach (string directory in Directory.GetDirectories(root))
+            {
+                string dirName = Path.GetFileName(directory);
+
+                if (!Directory.Exists(Path.Combine(dest, dirName)))
+                {
+                    Directory.CreateDirectory(Path.Combine(dest, dirName));
+                }
+
+                MoveAllFilesOver(directory, Path.Combine(dest, dirName), dialog);
+            }
+
+            foreach (string file in Directory.GetFiles(root))
+            {
+                File.Move(file, Path.Combine(dest, Path.GetFileName(file)), true);
+
+                Application.Invoke(delegate
+                {
+                    dialog.ProgressBar.Value++;
+                });
+            }
+        }
+
+        public static void CleanupUpdate()
+        {
+            foreach (string file in EnumerateFilesToDelete())
+            {
+                if (Path.GetExtension(file).EndsWith(".ryuold"))
+                {
+                    File.Delete(file);
+                }
+            }
+        }
+    }
+}