Add example cross platform avalonia project

Velopack.sln

@@ -12,9 +12,9 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "SolutionLevel", "SolutionLe
 		.editorconfig = .editorconfig
 		.github\workflows\build.yml = .github\workflows\build.yml
 		src\Directory.Build.props = src\Directory.Build.props
+		README.md = README.md
 		Velopack.entitlements = Velopack.entitlements
 		version.json = version.json
-		README.md = README.md
 	EndProjectSection
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Velopack.Packaging", "src\Velopack.Packaging\Velopack.Packaging.csproj", "{352C15EA-622F-4132-80D8-9B6E3C83404E}"
@@ -35,6 +35,10 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Velopack.Packaging.Tests",
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "TestApp", "test\TestApp\TestApp.csproj", "{784B5987-2E71-4AEE-81B9-E0CC7F1DBEB3}"
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "examples", "examples", "{3EBFA551-780C-473D-A197-0EE56F2CBA82}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "AvaloniaCrossPlat", "examples\AvaloniaCrossPlat\AvaloniaCrossPlat.csproj", "{1FF6A262-13D0-45DF-B818-77AC84C52C6F}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -81,6 +85,10 @@ Global
 		{784B5987-2E71-4AEE-81B9-E0CC7F1DBEB3}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{784B5987-2E71-4AEE-81B9-E0CC7F1DBEB3}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{784B5987-2E71-4AEE-81B9-E0CC7F1DBEB3}.Release|Any CPU.Build.0 = Release|Any CPU
+		{1FF6A262-13D0-45DF-B818-77AC84C52C6F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{1FF6A262-13D0-45DF-B818-77AC84C52C6F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{1FF6A262-13D0-45DF-B818-77AC84C52C6F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{1FF6A262-13D0-45DF-B818-77AC84C52C6F}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -90,6 +98,7 @@ Global
 		{519EAB50-47B8-425F-8B20-AB9548F220B4} = {7AC3A776-B582-4B65-9D03-BD52332B5CA3}
 		{175B06A5-5C09-4DAB-A6AF-C8A2257BD1B6} = {7AC3A776-B582-4B65-9D03-BD52332B5CA3}
 		{784B5987-2E71-4AEE-81B9-E0CC7F1DBEB3} = {7AC3A776-B582-4B65-9D03-BD52332B5CA3}
+		{1FF6A262-13D0-45DF-B818-77AC84C52C6F} = {3EBFA551-780C-473D-A197-0EE56F2CBA82}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {68CA987A-9BAB-4C75-8EEB-4596BA6BBD07}

examples/AvaloniaCrossPlat/App.axaml

@@ -0,0 +1,10 @@
+<Application xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             x:Class="AvaloniaCrossPlat.App"
+             RequestedThemeVariant="Default">
+             <!-- "Default" ThemeVariant follows system theme variant. "Dark" or "Light" are other available options. -->
+
+    <Application.Styles>
+        <FluentTheme />
+    </Application.Styles>
+</Application>

examples/AvaloniaCrossPlat/App.axaml.cs

@@ -0,0 +1,23 @@
+using Avalonia;
+using Avalonia.Controls.ApplicationLifetimes;
+using Avalonia.Markup.Xaml;
+
+namespace AvaloniaCrossPlat;
+
+public partial class App : Application
+{
+    public override void Initialize()
+    {
+        AvaloniaXamlLoader.Load(this);
+    }
+
+    public override void OnFrameworkInitializationCompleted()
+    {
+        if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
+        {
+            desktop.MainWindow = new MainWindow();
+        }
+
+        base.OnFrameworkInitializationCompleted();
+    }
+}

examples/AvaloniaCrossPlat/AvaloniaCrossPlat.csproj

@@ -0,0 +1,25 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <BuiltInComInteropSupport>true</BuiltInComInteropSupport>
+    <ApplicationManifest>app.manifest</ApplicationManifest>
+    <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
+    <NoWarn>$(NoWarn);CA2007</NoWarn>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Avalonia" Version="11.0.6" />
+    <PackageReference Include="Avalonia.Desktop" Version="11.0.6" />
+    <PackageReference Include="Avalonia.Themes.Fluent" Version="11.0.6" />
+    <PackageReference Include="Avalonia.Fonts.Inter" Version="11.0.6" />
+    <!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
+    <PackageReference Condition="'$(Configuration)' == 'Debug'" Include="Avalonia.Diagnostics" Version="11.0.6" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\Velopack\Velopack.csproj" />
+  </ItemGroup>
+  
+</Project>

examples/AvaloniaCrossPlat/Const.cs

@@ -0,0 +1 @@
+class Const { public const string RELEASES_DIR = @"{REPLACE_ME}"; } 

examples/AvaloniaCrossPlat/MainWindow.axaml

@@ -0,0 +1,27 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        mc:Ignorable="d" Width="600" Height="600"
+        x:Class="AvaloniaCrossPlat.MainWindow"
+        WindowStartupLocation="CenterScreen"
+        Title="AvaloniaCrossPlat">
+  <Grid>
+    <Grid.RowDefinitions>
+      <RowDefinition Height="Auto" />
+      <RowDefinition Height="15" />
+      <RowDefinition Height="*" />
+    </Grid.RowDefinitions>
+    <StackPanel>
+      <TextBlock Margin="10" Name="TextStatus" />
+      <StackPanel Orientation="Horizontal" Margin="10">
+        <Button Name="BtnCheckUpdate" Content="Check for Updates" Click="BtnCheckUpdateClick" />
+        <Button Margin="10,0" Name="BtnDownloadUpdate" Content="Download" Click="BtnDownloadUpdateClick" IsEnabled="False" />
+        <Button Name="BtnRestartApply" Content="Restart &amp; Apply" Click="BtnRestartApplyClick" IsEnabled="False" />
+      </StackPanel>
+    </StackPanel>
+    <ScrollViewer Name="ScrollLog" Grid.Row="2" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
+      <TextBlock Name="TextLog" Background="BlueViolet" Foreground="White" TextWrapping="Wrap" />
+    </ScrollViewer>
+  </Grid>
+</Window>

examples/AvaloniaCrossPlat/MainWindow.axaml.cs

@@ -0,0 +1,120 @@
+using System;
+using System.IO;
+using System.Text;
+using System.Xml.Linq;
+using Avalonia.Controls;
+using Avalonia.Threading;
+using Microsoft.Extensions.Logging;
+using Velopack;
+using static System.Net.Mime.MediaTypeNames;
+
+namespace AvaloniaCrossPlat;
+
+public partial class MainWindow : Window
+{
+    private UpdateManager _um;
+    private UpdateInfo _update;
+
+    public MainWindow()
+    {
+        InitializeComponent();
+        var channel = VelopackRuntimeInfo.SystemOs.GetOsShortName();
+        _um = new UpdateManager(Const.RELEASES_DIR, channel, new TextBoxLogger(Log));
+        UpdateStatus();
+    }
+
+    private async void BtnCheckUpdateClick(object sender, Avalonia.Interactivity.RoutedEventArgs e)
+    {
+        Working();
+        try {
+            _update = await _um.CheckForUpdatesAsync();
+        } catch (Exception ex) {
+            Log("ERROR: " + ex.Message);
+        }
+        UpdateStatus();
+    }
+
+    private async void BtnDownloadUpdateClick(object sender, Avalonia.Interactivity.RoutedEventArgs e)
+    {
+        Working();
+        try {
+            await _um.DownloadUpdatesAsync(_update, Progress);
+        } catch (Exception ex) {
+            Log("ERROR: " + ex.Message);
+        }
+        UpdateStatus();
+    }
+
+    private void Log(string text)
+    {
+        TextLog.Text += text + Environment.NewLine;
+        ScrollLog.ScrollToEnd();
+    }
+
+    private void BtnRestartApplyClick(object sender, Avalonia.Interactivity.RoutedEventArgs e)
+    {
+        _um.ApplyUpdatesAndRestart();
+    }
+
+    private void Progress(int percent)
+    {
+        Dispatcher.UIThread.Post(() => {
+            TextStatus.Text = $"Downloading ({percent}%)...";
+        });
+    }
+
+    private void Working()
+    {
+        BtnCheckUpdate.IsEnabled = false;
+        BtnDownloadUpdate.IsEnabled = false;
+        BtnRestartApply.IsEnabled = false;
+        TextStatus.Text = "Working...";
+    }
+
+    private void UpdateStatus()
+    {
+        StringBuilder sb = new StringBuilder();
+        sb.AppendLine($"Velopack version: {VelopackRuntimeInfo.VelopackNugetVersion}");
+        sb.AppendLine($"This app version: {(_um.IsInstalled ? _um.CurrentVersion : "(n/a - not installed)")}");
+
+        if (_update != null) {
+            sb.AppendLine($"Update available: {_update.TargetFullRelease.Version}");
+            BtnDownloadUpdate.IsEnabled = true;
+        } else {
+            BtnDownloadUpdate.IsEnabled = false;
+        }
+
+        if (_um.IsUpdatePendingRestart) {
+            sb.AppendLine("Update ready, pending restart to install");
+            BtnRestartApply.IsEnabled = true;
+        } else {
+            BtnRestartApply.IsEnabled = false;
+        }
+
+        TextStatus.Text = sb.ToString();
+        BtnCheckUpdate.IsEnabled = true;
+    }
+
+    private class TextBoxLogger : ILogger
+    {
+        private readonly Action<string> _textBox;
+
+        public TextBoxLogger(Action<string> textBox)
+        {
+            _textBox = textBox;
+        }
+
+        public IDisposable BeginScope<TState>(TState state) => null;
+
+        public bool IsEnabled(LogLevel logLevel) => true;
+
+        public void Log<TState>(LogLevel logLevel, EventId eventId, TState state,
+                       Exception exception, Func<TState, Exception, string> formatter)
+        {
+            var text = formatter(state, exception);
+            Dispatcher.UIThread.Post(() => {
+                _textBox(text);
+            });
+        }
+    }
+}

examples/AvaloniaCrossPlat/Program.cs

@@ -0,0 +1,28 @@
+using Avalonia;
+using System;
+using Velopack;
+
+namespace AvaloniaCrossPlat;
+
+class Program
+{
+    // Initialization code. Don't use any Avalonia, third-party APIs or any
+    // SynchronizationContext-reliant code before AppMain is called: things aren't initialized
+    // yet and stuff might break.
+    [STAThread]
+    public static void Main(string[] args)
+    {
+        VelopackApp.Build()
+            .Run();
+
+        BuildAvaloniaApp()
+            .StartWithClassicDesktopLifetime(args);
+    }
+
+    // Avalonia configuration, don't remove; also used by visual designer.
+    public static AppBuilder BuildAvaloniaApp()
+        => AppBuilder.Configure<App>()
+            .UsePlatformDetect()
+            .WithInterFont()
+            .LogToTrace();
+}

examples/AvaloniaCrossPlat/app.manifest

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1">
+  <!-- This manifest is used on Windows only.
+       Don't remove it as it might cause problems with window transparency and embedded controls.
+       For more details visit https://learn.microsoft.com/en-us/windows/win32/sbscs/application-manifests -->
+  <assemblyIdentity version="1.0.0.0" name="AvaloniaCrossPlat.Desktop"/>
+
+  <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+    <application>
+      <!-- A list of the Windows versions that this application has been tested on
+           and is designed to work with. Uncomment the appropriate elements
+           and Windows will automatically select the most compatible environment. -->
+
+      <!-- Windows 10 -->
+      <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}" />
+    </application>
+  </compatibility>
+</assembly>

examples/AvaloniaCrossPlat/build-win.bat

@@ -0,0 +1,32 @@
+@echo off
+setlocal enabledelayedexpansion
+
+:: Check if version parameter is provided
+if "%~1"=="" (
+    echo Please provide a version number.
+    echo Usage: build.bat version_number
+    exit /b 1
+)
+
+echo Building Velopack
+cd %~dp0..\..\src\Rust
+cargo build --features windows
+cd %~dp0..\..\
+dotnet build
+cd %~dp0
+
+set "version=%~1"
+set "releasesDir=%~dp0releases"
+
+:: Write to Const.cs
+echo class Const { public const string RELEASES_DIR = @"%releasesDir%"; } > "%~dp0Const.cs"
+echo Const.cs file updated with releases directory (%releasesDir%).
+
+echo Compiling AvaloniaCrossPlatTest with dotnet...
+dotnet publish -c Release --no-self-contained -r win-x64 -o %~dp0publish
+
+echo class Const { public const string RELEASES_DIR = @"{REPLACE_ME}"; } > "%~dp0Const.cs"
+echo Const.cs file reset
+
+echo Building Velopack Release v%version%
+%~dp0..\..\build\Debug\net8.0\vpk.exe pack -u AvaloniaCrossPlatTest -v %version% -o %releasesDir% -r win-x64 -e AvaloniaCrossPlat.exe -p %~dp0publish -c win