Updater

Mlaumcherb.Client.Avalonia/Config.cs

@@ -1,5 +1,6 @@
 using Mlaumcherb.Client.Avalonia.зримое;
 using Mlaumcherb.Client.Avalonia.классы;
+using Mlaumcherb.Client.Avalonia.сеть.Update;
 using Mlaumcherb.Client.Avalonia.холопы;
 
 namespace Mlaumcherb.Client.Avalonia;
@@ -26,6 +27,13 @@ public record Config
         new() { name = "Mojang", url = "https://piston-meta.mojang.com/mc/game/version_manifest_v2.json" },
     ];
     
+    public UpdateHelper.GiteaConfig gitea { get; set; } = new UpdateHelper.GiteaConfig
+    {
+        serverUrl = "https://timerix.ddns.net:3322",
+        user = "Timerix",
+        repo = "mlaumcherb",
+    };
+
     
     [JsonIgnore] private static IOPath _filePath = "млаумчерб.json";
     

Mlaumcherb.Client.Avalonia/Mlaumcherb.Client.Avalonia.csproj

@@ -1,5 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
+        <Version>1.1.0</Version>
         <OutputType Condition="'$(Configuration)' == 'Debug'">Exe</OutputType>
         <OutputType Condition="'$(Configuration)' != 'Debug'">WinExe</OutputType>
         <TargetFramework>net8.0</TargetFramework>
@@ -18,12 +19,12 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Avalonia" Version="11.2.0" />
+        <PackageReference Include="Avalonia" Version="11.2.*" />
-        <PackageReference Include="Avalonia.Desktop" Version="11.2.0" />
+        <PackageReference Include="Avalonia.Desktop" Version="11.2.*" />
-        <PackageReference Include="Avalonia.Themes.Simple" Version="11.2.0" />
+        <PackageReference Include="Avalonia.Themes.Simple" Version="11.2.*" />
-        <PackageReference Condition="'$(Configuration)' == 'Debug'" Include="Avalonia.Diagnostics" Version="11.2.0" />
+        <PackageReference Condition="'$(Configuration)' == 'Debug'" Include="Avalonia.Diagnostics" Version="11.2.*" />
-        <PackageReference Include="Avalonia.Labs.Gif" Version="11.2.0" />
+        <PackageReference Include="Avalonia.Labs.Gif" Version="11.2.*" />
-        <PackageReference Include="CliWrap" Version="3.6.7" />
+        <PackageReference Include="CliWrap" Version="3.7.0" />
         <PackageReference Include="DTLib" Version="1.6.1" />
         <PackageReference Include="LZMA-SDK" Version="22.1.1" />
         <PackageReference Include="MessageBox.Avalonia" Version="3.2.0" />
@@ -35,4 +36,8 @@
         <EmbeddedResource Include="встроенное\**" />
     </ItemGroup>
 
+    <ItemGroup>
+      <Folder Include="Gitea\" />
+    </ItemGroup>
+    
 </Project>

Mlaumcherb.Client.Avalonia/зримое/LauncherApp.axaml.cs

@@ -2,6 +2,9 @@ using Avalonia;
 using Avalonia.Controls.ApplicationLifetimes;
 using Avalonia.Markup.Xaml;
 using Mlaumcherb.Client.Avalonia.классы;
+using Mlaumcherb.Client.Avalonia.сеть;
+using Mlaumcherb.Client.Avalonia.сеть.Update;
+using Mlaumcherb.Client.Avalonia.холопы;
 
 namespace Mlaumcherb.Client.Avalonia.зримое;
 
@@ -18,6 +21,8 @@ public class LauncherApp : Application
         Logger.DebugLogEnabled = Config.debug;
         AvaloniaXamlLoader.Load(this);
 
+        Update();
+        
         // some file required by forge installer
         if (!File.Exists("launcher_profiles.json"))
         {
@@ -27,6 +32,27 @@ public class LauncherApp : Application
         InstalledVersionCatalog = InstalledVersionCatalog.Load();
     }
 
+    private async void Update()
+    {
+        try
+        {
+            Logger.LogInfo(nameof(LauncherApp), "checking for updates...");
+            var upd = new UpdateHelper(Config.gitea);
+            upd.DeleteBackupFiles();
+            if (await upd.IsUpdateAvailable())
+            {
+                Logger.LogInfo(nameof(LauncherApp), "downloading update...");
+                await upd.UpdateSelf();
+                Logger.LogInfo(nameof(LauncherApp), "restarting...");
+                upd.RestartSelf();
+            }
+        }
+        catch (Exception e)
+        {
+            ErrorHelper.ShowMessageBox(nameof(LauncherApp), e);
+        }
+    }
+
     public override void OnFrameworkInitializationCompleted()
     {
         if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)

Mlaumcherb.Client.Avalonia/зримое/MainWindow.axaml

@@ -178,6 +178,7 @@
                     <Button Classes="menu_button button_no_border" Click="ОткрытьФайлЛогов">лог-файл</Button>
                 </StackPanel>
                 <StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
+                    <TextBlock Name="LauncherVersionTextBox"/>
                     <Button Classes="menu_button button_no_border" Click="ОткрытьРепозиторий">исходный код</Button>
                     <gif:GifImage 
                         Width="30" Height="30" Stretch="Uniform"

Mlaumcherb.Client.Avalonia/зримое/MainWindow.axaml.cs

@@ -1,3 +1,4 @@
+using System.Reflection;
 using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Data;
@@ -70,6 +71,7 @@ public partial class MainWindow : Window
         try
         {
             LauncherApp.Logger.OnLogMessage += GuiLogMessage;
+            LauncherVersionTextBox.Text = $"v {Assembly.GetExecutingAssembly().GetName().Version}";
 
             PlayerName = LauncherApp.Config.player_name;
             MemoryLimit = LauncherApp.Config.max_memory;

Mlaumcherb.Client.Avalonia/классы/Буржуазия/GameVersionDescriptor.cs

@@ -67,7 +67,7 @@ public class Library
     public List<Rule>? rules { get; set; }
     public Natives? natives { get; set; }
     public Extract? extract { get; set; }
-    [JsonRequired] public LibraryDownloads downloads { get; set; } = null!;
+    public LibraryDownloads? downloads { get; set; }
 }
 
 public class AssetIndexProperties

Mlaumcherb.Client.Avalonia/классы/Пролетариат/InstalledGameVersionProps.cs

@@ -81,8 +81,8 @@ public class InstalledGameVersionProps : IComparable<InstalledGameVersionProps>,
                 new JsonMergeSettings { MergeArrayHandling = MergeArrayHandling.Concat });
             descriptorRaw = parentDescriptorRaw;
             // removing dependency
-            descriptorRaw.Remove("inheritsFrom");
+            // descriptorRaw.Remove("inheritsFrom");
-            File.WriteAllText(DescriptorPath, descriptorRaw.ToString());
+            // File.WriteAllText(DescriptorPath, descriptorRaw.ToString());
         }
 
         var descriptor = descriptorRaw.ToObject<GameVersionDescriptor>()

Mlaumcherb.Client.Avalonia/классы/Пролетариат/Libraries.cs

@@ -7,13 +7,28 @@ public class Libraries
 {
     private static readonly string[] enabled_features = [];
     
-    public record JarLib(string name, IOPath jarFilePath, Artifact artifact);
+    public record JarLib(string name, IOPath jarFilePath, Artifact? artifact);
-    public record NativeLib(string name, IOPath jarFilePath, Artifact artifact, Extract? extractionOptions) 
+    public record NativeLib(string name, IOPath jarFilePath, Artifact? artifact, Extract? extractionOptions) 
         : JarLib(name, jarFilePath, artifact);
     
     public IReadOnlyCollection<JarLib> Libs { get; }
 
-    private IOPath GetJarFilePath(Artifact artifact)
+    public static IOPath GetPathFromMavenName(string mavenName, string ext = "jar")
+    {
+        int sep_0 = mavenName.IndexOf(':');
+        if (sep_0 == -1)
+            throw new ArgumentException($"Invalid maven name: {mavenName}");
+        int sep_1 = mavenName.IndexOf(':', sep_0 + 1);
+        if (sep_1 == -1)
+            throw new ArgumentException($"Invalid maven name: {mavenName}");
+        var package = mavenName.Substring(0, sep_0).Replace('.', '/');
+        var artifact = mavenName.Substring(sep_0 + 1, sep_1 - sep_0 - 1);
+        var version = mavenName.Substring(sep_1 + 1);
+        string file_name = $"{artifact}-{version}.{ext}";
+        return Path.Concat(PathHelper.GetLibrariesDir(), package, artifact, version, file_name);
+    }
+    
+    private static IOPath GetPathFromArtifact(Artifact artifact)
     {
         string relativePath;
         if (!string.IsNullOrEmpty(artifact.path))
@@ -60,26 +75,30 @@ public class Libraries
                 }
                 
                 Artifact artifact = null!;
-                if(l.downloads.classifiers != null && !l.downloads.classifiers.TryGetValue(nativesKey, out artifact!))
+                if(l.downloads?.classifiers != null && !l.downloads.classifiers.TryGetValue(nativesKey, out artifact!))
                     throw new Exception($"can't find artifact for '{l.name}' with nativesKey '{nativesKey}'");
                 
                 // skipping duplicates (WHO THE HELL CREATES THIS DISCRIPTORS AAAAAAAAA)
                 if(!libHashes.Add(artifact.sha1))
                     continue;
                 
-                libs.Add(new NativeLib(l.name, GetJarFilePath(artifact), artifact, l.extract));
+                libs.Add(new NativeLib(l.name, GetPathFromArtifact(artifact), artifact, l.extract));
+            }
+            else
+            {
+                Artifact? artifact = l.downloads?.artifact;
+                if (artifact is null)
+                {
+                    libs.Add(new JarLib(l.name, GetPathFromMavenName(l.name), artifact));
                 }
                 else
                 {
-                Artifact? artifact = l.downloads.artifact;
-                if (artifact == null)
-                    throw new NullReferenceException($"artifact for '{l.name}' is null");
-                
                     // skipping duplicates
                     if (!libHashes.Add(artifact.sha1))
                         continue;
 
-                libs.Add(new JarLib(l.name, GetJarFilePath(artifact), artifact));
+                    libs.Add(new JarLib(l.name, GetPathFromArtifact(artifact), artifact));
+                }
             }
         }
 

Mlaumcherb.Client.Avalonia/классы/Пролетариат/MyModpack.cs

@@ -1,49 +0,0 @@
-using Mlaumcherb.Client.Avalonia.холопы;
-
-namespace Mlaumcherb.Client.Avalonia.классы;
-
-public class MyModpackRemoteProps
-{
-    [JsonRequired] public int format_version { get; set; }
-    [JsonRequired] public Artifact artifact { get; set; } = null!;
-}
-
-public class MyModpackV1
-{
-    // 1
-    [JsonRequired] public int format_version { get; set; }
-    [JsonRequired] public string name { get; set; } = "";
-    // zip archive with all files
-    [JsonRequired] public Artifact zip { get; set; } = null!;
-    /// relative_path, hash
-    // ReSharper disable once CollectionNeverUpdated.Global
-    [JsonRequired] public Dictionary<string, FileProps> files { get; set; } = new();
-    
-    
-    public class FileProps
-    {
-        [JsonRequired] public string sha1 { get; set; } = "";
-        // disable hash validation, allowing users to edit this file
-        public bool allow_edit { get; set; }
-        // don't re-download file if it was deleted by user
-        public bool optional { get; set; }
-    }
-
-    public bool CheckFiles(IOPath basedir, bool checkHashes, bool downloadOptionalFiles, HashSet<IOPath> unmatchedFilesLocalPaths)
-    {
-        foreach (var p in files)
-        {
-            if(!downloadOptionalFiles && p.Value.optional)
-                continue;
-            
-            var localPath = new IOPath(p.Key);
-            var realPath = Path.Concat(basedir, localPath);
-            if (!HashHelper.CheckFileSHA1(realPath, p.Value.sha1, checkHashes && !p.Value.allow_edit))
-            {
-                unmatchedFilesLocalPaths.Add(localPath);
-            }
-        }
-        
-        return unmatchedFilesLocalPaths.Count == 0;
-    }
-}

Mlaumcherb.Client.Avalonia/классы/Пролетариат/MyModpackRemoteProps.cs

@@ -0,0 +1,7 @@
+namespace Mlaumcherb.Client.Avalonia.классы;
+
+public class MyModpackRemoteProps
+{
+    [JsonRequired] public int format_version { get; set; }
+    [JsonRequired] public Artifact artifact { get; set; } = null!;
+}

Mlaumcherb.Client.Avalonia/классы/Пролетариат/MyModpackV2.cs

@@ -0,0 +1,47 @@
+using Mlaumcherb.Client.Avalonia.холопы;
+
+namespace Mlaumcherb.Client.Avalonia.классы;
+
+public class MyModpackV2
+{
+    // 2
+    [JsonRequired] public int format_version { get; set; }
+    [JsonRequired] public string name { get; set; } = "";
+    /// relative_path, props
+    // ReSharper disable once CollectionNeverUpdated.Global
+    [JsonRequired] public Dictionary<string, FileProps> files { get; set; } = new();
+    
+    
+    public class FileProps
+    {
+        [JsonRequired] public Artifact artifact { get; set; } = null!;
+        // disable hash validation, allowing users to edit this file
+        public bool allow_edit { get; set; }
+        // don't re-download file if it was deleted by user
+        public bool optional { get; set; }
+    }
+
+    
+    public record FileCheckResult(FileProps props, IOPath relativePath, IOPath absolutePath); 
+    public List<FileCheckResult> CheckFiles(IOPath basedir, bool checkHashes, bool downloadOptionalFiles)
+    {
+        List<FileCheckResult> unmatchedFiles = new();
+        IOPath launcherRoot = PathHelper.GetRootFullPath();
+        foreach (var p in files)
+        {
+            if(!downloadOptionalFiles && p.Value.optional)
+                continue;
+            
+            IOPath relativePath = new IOPath(p.Key);
+            // libraries can be in modpacks, they are placed in global libraries directory
+            var absolutePath = Path.Concat(relativePath.StartsWith("libraries") 
+                ? launcherRoot : basedir, relativePath);
+            if (!HashHelper.CheckFileSHA1(absolutePath, p.Value.artifact.sha1, checkHashes && !p.Value.allow_edit))
+            {
+                unmatchedFiles.Add(new FileCheckResult(p.Value, relativePath, absolutePath));
+            }
+        }
+
+        return unmatchedFiles;
+    }
+}

Mlaumcherb.Client.Avalonia/сеть/TaskFactories/LibrariesDownloadTaskFactory.cs

@@ -42,7 +42,7 @@ public class LibrariesDownloadTaskFactory : INetworkTaskFactory
         
         foreach (var l in _libraries.Libs)
         {
-            if (!HashHelper.CheckFileSHA1(l.jarFilePath, l.artifact.sha1, checkHashes))
+            if (!HashHelper.CheckFileSHA1(l.jarFilePath, l.artifact?.sha1, checkHashes))
             {
                 _libsToDownload.Add(l);
             }
@@ -60,7 +60,7 @@ public class LibrariesDownloadTaskFactory : INetworkTaskFactory
     {
         long total = 0;
         foreach (var l in _libsToDownload)
-            total += l.artifact.size;
+            total += l.artifact?.size ?? 0;
         return total;
     }
 
@@ -76,7 +76,7 @@ public class LibrariesDownloadTaskFactory : INetworkTaskFactory
         await Parallel.ForEachAsync(_libsToDownload, opt, async (l, _ct) =>
         {
             LauncherApp.Logger.LogDebug(nameof(NetworkHelper), $"downloading library '{l.name}' to '{l.jarFilePath}'");
-            if(string.IsNullOrEmpty(l.artifact.url))
+            if(string.IsNullOrEmpty(l.artifact?.url))
                 throw new Exception($"library '{l.name}' doesn't have a url to download");
             await DownloadFile(l.artifact.url, l.jarFilePath, _ct, pr.AddBytesCount);
             if (l is Libraries.NativeLib n)

Mlaumcherb.Client.Avalonia/сеть/TaskFactories/ModpackDownloadTaskFactory.cs

@@ -1,113 +1,25 @@
-using System.IO.Compression;
+using Mlaumcherb.Client.Avalonia.классы;
-using Mlaumcherb.Client.Avalonia.зримое;
-using Mlaumcherb.Client.Avalonia.классы;
-using Mlaumcherb.Client.Avalonia.холопы;
 
 namespace Mlaumcherb.Client.Avalonia.сеть.TaskFactories;
 
 public class ModpackDownloadTaskFactory : INetworkTaskFactory
 {
     INetworkTaskFactory _implementationVersion;
-    private GameVersionDescriptor _descriptor;
 
     public ModpackDownloadTaskFactory(GameVersionDescriptor descriptor)
     {
         if(descriptor.modpack is null)
             throw new ArgumentNullException(nameof(descriptor.modpack));
         
-        _descriptor = descriptor;
         _implementationVersion = descriptor.modpack.format_version switch
         {
-            1 => new MyModpackV1DownloadTaskFactory(descriptor),
+            2 => new MyModpackV2DownloadTaskFactory(descriptor),
             _ => throw new Exception($"Unknown Modpack format_version: {descriptor.modpack.format_version}")
         };
     }
 
     public Task<NetworkTask?> CreateAsync(bool checkHashes)
     {
-        // Modpacks can include libraries.
-        // This libraries are downloaded in launcher_dir/libraries through symbolic link.
-        var localLibsDir = Path.Concat(PathHelper.GetVersionDir(_descriptor.id), "libraries");
-        var globalLibsDir = PathHelper.GetLibrariesDir();
-        var dirInfo = new DirectoryInfo(localLibsDir.ToString());
-        // delete dir if it isn't symlink
-        if(dirInfo.Exists && dirInfo.LinkTarget is null)
-            dirInfo.Delete(true);
-        if (!dirInfo.Exists)
-        {
-            LauncherApp.Logger.LogInfo(nameof(ModpackDownloadTaskFactory),
-                $"Creating symbolic link '{localLibsDir}' -> '{globalLibsDir}'");
-            dirInfo.CreateAsSymbolicLink(globalLibsDir.ToString());
-        }
-        
         return _implementationVersion.CreateAsync(checkHashes);
     }
 }
-
-public class MyModpackV1DownloadTaskFactory : INetworkTaskFactory
-{
-    private readonly GameVersionDescriptor _descriptor;
-    private IOPath _modpackDescriptorPath;
-    private IOPath _versionDir;
-    private MyModpackV1? _modpack;
-    private HashSet<IOPath> _filesToDosnload = new();
-
-    public MyModpackV1DownloadTaskFactory(GameVersionDescriptor descriptor)
-    {
-        _descriptor = descriptor;
-        _modpackDescriptorPath = PathHelper.GetModpackDescriptorPath(_descriptor.id);
-        _versionDir = PathHelper.GetVersionDir(_descriptor.id);
-    }
-    
-    public async Task<NetworkTask?> CreateAsync(bool checkHashes)
-    {
-        if(_descriptor.modpack is null)
-            throw new ArgumentNullException(nameof(_descriptor.modpack));
-        
-        (_modpack, bool didDownloadModpackDescriptor) = await NetworkHelper.ReadOrDownloadAndDeserialize<MyModpackV1>(
-            _modpackDescriptorPath,
-            _descriptor.modpack.artifact.url, 
-            _descriptor.modpack.artifact.sha1,
-            checkHashes);
-        if (_modpack.format_version != _descriptor.modpack.format_version)
-            throw new Exception($"Modpack.format_version mismatches descriptor.modpack.version: " +
-                                $"{_modpack.format_version} != {_descriptor.modpack.format_version}");
-        
-        NetworkTask? networkTask = null;
-        if(!_modpack.CheckFiles(_versionDir, checkHashes, didDownloadModpackDescriptor, _filesToDosnload))
-        {
-            networkTask = new NetworkTask(
-                $"modpack '{_descriptor.assetIndex.id}'",
-                _modpack.zip.size,
-                Download
-            );
-        }
-
-        return networkTask;
-    }
-
-    private async Task Download(NetworkProgressReporter pr, CancellationToken ct)
-    {
-        LauncherApp.Logger.LogInfo(nameof(NetworkHelper), $"started downloading modpack '{_modpack!.name}'");
-        if(string.IsNullOrEmpty(_modpack.zip.url))
-            throw new Exception($"modpack '{_modpack.name}' doesn't have a url to download");
-
-        var _archivePath = Path.Concat(PathHelper.GetCacheDir(), "modpacks", _modpack.name + ".zip");
-        await NetworkHelper.DownloadFile(_modpack.zip.url, _archivePath, ct, pr.AddBytesCount);
-        
-        await using var zipf = File.OpenRead(_archivePath);
-        using var archive = new ZipArchive(zipf);
-        foreach (var entry in archive.Entries)
-        {
-            IOPath localPath = new(entry.FullName);
-            if(_filesToDosnload.Contains(localPath))
-            {
-                var real_path = Path.Concat(_versionDir, localPath);
-                Directory.Create(real_path.ParentDir());
-                entry.ExtractToFile(real_path.ToString(), true);
-            }
-        }
-        
-        LauncherApp.Logger.LogInfo(nameof(NetworkHelper), $"finished downloading modpack '{_modpack.name}'");
-    }
-}

Mlaumcherb.Client.Avalonia/сеть/TaskFactories/MyModpackV2DownloadTaskFactory.cs

@@ -0,0 +1,71 @@
+using System.Linq;
+using Mlaumcherb.Client.Avalonia.зримое;
+using Mlaumcherb.Client.Avalonia.классы;
+using Mlaumcherb.Client.Avalonia.холопы;
+
+namespace Mlaumcherb.Client.Avalonia.сеть.TaskFactories;
+
+public class MyModpackV2DownloadTaskFactory : INetworkTaskFactory
+{
+    private readonly GameVersionDescriptor _descriptor;
+    private IOPath _modpackDescriptorPath;
+    private IOPath _versionDir;
+    private MyModpackV2? _modpack;
+    // relative, absolute
+    private List<MyModpackV2.FileCheckResult> _filesToDownload = new();
+
+    public MyModpackV2DownloadTaskFactory(GameVersionDescriptor descriptor)
+    {
+        _descriptor = descriptor;
+        _modpackDescriptorPath = PathHelper.GetModpackDescriptorPath(_descriptor.id);
+        _versionDir = PathHelper.GetVersionDir(_descriptor.id);
+    }
+    
+    public async Task<NetworkTask?> CreateAsync(bool checkHashes)
+    {
+        if(_descriptor.modpack is null)
+            throw new ArgumentNullException(nameof(_descriptor.modpack));
+        
+        (_modpack, bool didDownloadModpackDescriptor) = await NetworkHelper.ReadOrDownloadAndDeserialize<MyModpackV2>(
+            _modpackDescriptorPath,
+            _descriptor.modpack.artifact.url, 
+            _descriptor.modpack.artifact.sha1,
+            checkHashes);
+        if (_modpack.format_version != _descriptor.modpack.format_version)
+            throw new Exception($"Modpack.format_version mismatches descriptor.modpack.version: " +
+                                $"{_modpack.format_version} != {_descriptor.modpack.format_version}");
+        
+        NetworkTask? networkTask = null;
+        _filesToDownload = _modpack.CheckFiles(_versionDir, checkHashes, didDownloadModpackDescriptor);
+        if(_filesToDownload.Count > 0)
+        {
+            networkTask = new NetworkTask(
+                $"modpack '{_modpack.name}'",
+                _filesToDownload.Sum(f => f.props.artifact.size),
+                Download
+            );
+        }
+
+        return networkTask;
+    }
+
+    private async Task Download(NetworkProgressReporter pr, CancellationToken ct)
+    {
+        LauncherApp.Logger.LogInfo(nameof(NetworkHelper), $"started downloading modpack '{_modpack!.name}'");
+
+        ParallelOptions opt = new()
+        {
+            MaxDegreeOfParallelism = LauncherApp.Config.max_parallel_downloads,
+            CancellationToken = ct
+        };
+        await Parallel.ForEachAsync(_filesToDownload, opt, async (f, _ct) =>
+        {
+            LauncherApp.Logger.LogDebug(nameof(NetworkHelper), $"downloading file '{f.relativePath}'");
+            if(string.IsNullOrEmpty(f.props.artifact.url))
+                throw new Exception($"file '{f.relativePath}' doesn't have a url to download");
+            await NetworkHelper.DownloadFile(f.props.artifact.url, f.absolutePath, _ct, pr.AddBytesCount);
+        });
+        
+        LauncherApp.Logger.LogInfo(nameof(NetworkHelper), $"finished downloading modpack '{_modpack.name}'");
+    }
+}

Mlaumcherb.Client.Avalonia/сеть/Update/Gitea.cs

@@ -0,0 +1,38 @@
+using System.Linq;
+
+namespace Mlaumcherb.Client.Avalonia.сеть.Update;
+
+public class Release
+{
+    [JsonRequired] public int id { get; set; }
+    [JsonRequired] public string tag_name { get; set; } = "";
+    [JsonRequired] public DateTime created_at { get; set; }
+    // ReSharper disable once CollectionNeverUpdated.Global
+    public List<Asset> assets { get; set; } = new();
+    
+    public class Asset
+    {
+        [JsonRequired] public int id { get; set; }
+        [JsonRequired] public string name { get; set; } = "";
+        [JsonRequired] public int size { get; set; }
+        [JsonRequired] public DateTime created_at { get; set; }
+        [JsonRequired] public string browser_download_url { get; set; } = "";
+
+        public async Task Download(IOPath localPath)
+        {
+            await NetworkHelper.DownloadFile(browser_download_url, localPath);
+        }
+    }
+
+    public Asset? FindAssetByName(string name) => 
+        assets.FirstOrDefault(a => a.name == name);
+}
+
+public class GiteaClient(string ServerUrl)
+{
+    public async Task<Release> GetLatestRelease(string user, string repo)
+    {
+        string url = $"{ServerUrl}//api/v1/repos/{user}/{repo}/releases/latest";
+        return await NetworkHelper.DownloadStringAndDeserialize<Release>(url);
+    }
+}

Mlaumcherb.Client.Avalonia/сеть/Update/UpdateHelper.cs

@@ -0,0 +1,74 @@
+using System.Diagnostics;
+using System.Reflection;
+
+namespace Mlaumcherb.Client.Avalonia.сеть.Update;
+
+public class UpdateHelper
+{
+    private readonly string _executableName = "млаумчерб.exe";
+    private readonly IOPath executablePathActual;
+    private readonly IOPath executablePathOld;
+    private readonly IOPath executablePathNew;
+
+    
+    public class GiteaConfig
+    {
+        [JsonRequired] public required string serverUrl { get; set; }
+        [JsonRequired] public required string user { get; set; }
+        [JsonRequired] public required string repo { get; set; }
+    }
+    
+    private GiteaConfig _giteaConfig;
+    
+    public UpdateHelper(GiteaConfig giteaConfig)
+    {
+        _giteaConfig = giteaConfig;
+        executablePathActual = _executableName;
+        executablePathOld = _executableName + ".old";
+        executablePathNew = _executableName + ".new";
+        Gitea = new GiteaClient(giteaConfig.serverUrl);
+    }
+
+    public GiteaClient Gitea { get; }
+
+    public void DeleteBackupFiles()
+    {
+        if(File.Exists(executablePathOld))
+            File.Delete(executablePathOld);
+    }
+    
+    public async Task<bool> IsUpdateAvailable()
+    {
+        var latest = await Gitea.GetLatestRelease(_giteaConfig.user, _giteaConfig.repo);
+        if (!Version.TryParse(latest.tag_name, out var latestVersion))
+            throw new Exception($"Can't parse version of latest release: {latest.tag_name}");
+
+        Version? currentVersion = Assembly.GetExecutingAssembly().GetName().Version;
+        if(currentVersion is null)
+            throw new Exception($"Can't get current version from {Assembly.GetExecutingAssembly().GetName()}");
+
+        return currentVersion < latestVersion;
+    }
+
+    public async Task UpdateSelf()
+    {
+        if(File.Exists(executablePathNew))
+            File.Delete(executablePathNew);
+        
+        var latest = await Gitea.GetLatestRelease(_giteaConfig.user, _giteaConfig.repo);
+        var asset = latest.FindAssetByName(_executableName);
+        if(asset == null)
+            throw new Exception($"Can't find updated executable on gitea: {_executableName}");
+        await asset.Download(executablePathNew);
+        
+        File.Move(executablePathActual, executablePathOld, true);
+        File.Move(executablePathNew, executablePathActual, true);
+    }
+
+    public void RestartSelf()
+    {
+        Process.Start(executablePathActual.ToString());
+        Thread.Sleep(500);
+        Environment.Exit(0);
+    }
+}

Mlaumcherb.Client.Avalonia/холопы/HashHelper.cs

@@ -24,8 +24,8 @@ public static class HashHelper
         if (!File.Exists(f))
             return false;
         
-        if(checkHash)
+        if(checkHash && sha1 is not null)
-            return sha1 is not null && HashFileSHA1(f) == sha1;
+            return HashFileSHA1(f) == sha1;
 
         return true;
     }