- tweak: loading popup thinks

* - tweak: change loading handle logic

* - tweak: beautify loading thinks

* - fix: speed thinks while downloading

.idea/.idea.Nebula/.idea/avalonia.xml

@@ -45,6 +45,7 @@
         <entry key="Nebula.Launcher/Views/ServerListView.axaml" value="Nebula.Launcher/Nebula.Launcher.csproj" />
         <entry key="Nebula.Launcher/Views/Tabs/AccountInfoTab.axaml" value="Nebula.Launcher/Nebula.Launcher.csproj" />
         <entry key="Nebula.Launcher/Views/Tabs/ServerListTab.axaml" value="Nebula.Launcher/Nebula.Launcher.csproj" />
+        <entry key="Nebula.Launcher/Views/VisualErrorView.axaml" value="Nebula.Launcher/Nebula.Launcher.csproj" />
         <entry key="Nebula.UpdateResolver/App.axaml" value="Nebula.UpdateResolver/Nebula.UpdateResolver.csproj" />
         <entry key="Nebula.UpdateResolver/MainWindow.axaml" value="Nebula.UpdateResolver/Nebula.UpdateResolver.csproj" />
       </map>

Nebula.Launcher/App.axaml.cs

@@ -28,14 +28,16 @@ public class App : Application
             {
                 case IClassicDesktopStyleApplicationLifetime desktop:
                     DisableAvaloniaDataAnnotationValidation();
-                    desktop.MainWindow = new MessageWindow(out provider);
+                    desktop.MainWindow = (Window)(provider = new MessageWindow());
                     break;
                 case ISingleViewApplicationLifetime singleViewPlatform:
-                    singleViewPlatform.MainView = new MessageView(out provider);
+                    singleViewPlatform.MainView = (Control)(provider = new MessageView());
                     break;
             }
             
-            provider?.ShowMessage("Launcher is already running.","hey shithead!");
+            provider?.ShowMessage(
+                "Error: An instance of the application is already running. Please close the existing instance before launching a new one.", 
+                "Duplicate instance detected.");
             
             return;
         }

Nebula.Launcher/Assets/lang/en-US.ftl

@@ -24,8 +24,9 @@ account-auth-server = Authentication Server
 account-auth-button = Authenticate  
 account-auth-save = Save Profile  
 account-auth-hello = Hello,  
+account-auth-current-server = Current server auth:
 account-auth-logout = Log out  
-auth-current-login-name = Current login: {$login}
+auth-current-login-name = Current login {$auth_server}: {$login}
 auth-current-login-no-name = Profile not selected
 
 auth-processing = Processing authentication request...  
@@ -37,6 +38,7 @@ auth-name-resolution-error = Failed to resolve server address. Check your networ
 auth-secure-error = Failed to cinnect to the server using SSL
 auth-config-read = Reading authentication configuration...  
 auth-try-auth-config = Attempting to authenticate using saved configuration.
+auth-try-auth-profile = Attempting to authenticate using profile
 
 config-export-logs = Export logs
 config-open-data = Open data path
@@ -68,3 +70,4 @@ popup-login-credentials-warning-cancel = Cancel
 popup-login-credentials-warning-proceed = Proceed
 
 goto-path-home = Root folder
+tab-favorite = Favorite

Nebula.Launcher/Assets/lang/ru-RU.ftl

@@ -24,8 +24,9 @@ account-auth-server = Сервер аутентификации
 account-auth-button = Аутентифицировать  
 account-auth-save = Сохранить профиль  
 account-auth-hello = Привет,  
+account-auth-current-server = Текущий сервер авторизации:
 account-auth-logout = Выйти  
-auth-current-login-name = Текущий профиль: {$login}
+auth-current-login-name = Текущий профиль {$auth_server}: {$login}
 auth-current-login-no-name = Профиль не выбран
 
 auth-processing = Обработка запроса аутентификации...  
@@ -37,6 +38,7 @@ auth-name-resolution-error = Не удалось разрешить адрес
 auth-secure-error = Не удалось подключиться к серверу по SSL. Проверьте сетевые настройки.
 auth-config-read = Чтение конфигурации аутентификации...  
 auth-try-auth-config = Попытка аутентификации с использованием сохраненной конфигурации.
+auth-try-auth-profile = Попытка аутентификации с использованием профиля
 
 config-export-logs = Экспортировать логи
 config-open-data = Открыть путь данных
@@ -67,4 +69,5 @@ popup-login-credentials-warning-go-auth = Перейти на страницу
 popup-login-credentials-warning-cancel = Отмена
 popup-login-credentials-warning-proceed = Продолжить
 
-goto-path-home = Корн. папка
+goto-path-home = Корн. папка
+tab-favorite = Избранное

Nebula.Launcher/ColorUtils.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Security.Cryptography;
+using System.Text;
+using Avalonia.Media;
+
+namespace Nebula.Launcher.ViewModels.Pages;
+
+public static class ColorUtils
+{
+    public static Color GetColorFromString(string input)
+    {
+        var hash = MD5.HashData(Encoding.UTF8.GetBytes(input));
+        
+        var r = byte.Clamp(hash[0], 10, 200);
+        var g = byte.Clamp(hash[1], 10, 100);
+        var b = byte.Clamp(hash[2], 10, 100);
+
+        return Color.FromArgb(Byte.MaxValue, r, g, b);
+    }
+}

Nebula.Launcher/Configurations/ArrayUnitConfigControl.cs

@@ -0,0 +1,99 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Layout;
+
+namespace Nebula.Launcher.ViewModels.Pages;
+
+public sealed class ArrayUnitConfigControl : Border, IConfigControl
+{
+    private readonly List<IConfigControl> _itemControls = [];
+    private readonly StackPanel _itemsPanel = new StackPanel() { Orientation = Orientation.Vertical };
+    private readonly Button _addButton = new Button() { Content = new Label()
+    {
+        Content = "Add Item"
+    }, Classes = { "ConfigBorder" }};
+    private readonly int _oldCount;
+    private readonly Type _elementType;
+    private readonly StackPanel _panel = new();
+
+    public string ConfigName { get; }
+    public bool Dirty => _itemControls.Any(dirty => dirty.Dirty) || _itemControls.Count != _oldCount;
+
+    public ArrayUnitConfigControl(string name, object value)
+    {
+        Classes.Add("ConfigBorder");
+        _elementType = value.GetType().GetElementType()!;
+        
+        ConfigName = name;
+        _panel.Orientation = Orientation.Vertical;
+        _panel.Spacing = 4f;
+        _itemsPanel.Spacing = 4f;
+
+        _panel.Children.Add(new Label { Content = name });
+        _panel.Children.Add(_itemsPanel);
+        _panel.Children.Add(_addButton);
+
+        _addButton.Click += (_, _) => AddItem(ConfigControlHelper.CreateDefaultValue(_elementType)!);
+        Child = _panel; 
+        SetValue(value);
+        _oldCount = _itemControls.Count;
+    }
+
+    private void AddItem(object value)
+    {
+        var itemPanel = new StackPanel { Orientation = Orientation.Horizontal, Spacing = 2 };
+        var control = ConfigControlHelper.GetConfigControl(_itemControls.Count.ToString(), value);
+        var removeButton = new Button { Content = new Label(){ Content = "Remove" }, Classes = { "ConfigBorder" }};
+
+        removeButton.Click += (_, _) =>
+        {
+            _itemControls.Remove(control);
+            _itemsPanel.Children.Remove(itemPanel);
+        };
+        
+        ((Control)control).Margin = new Thickness(5);
+        itemPanel.Children.Add((Control)control);
+        itemPanel.Children.Add(removeButton);
+
+        _itemsPanel.Children.Add(itemPanel);
+        _itemControls.Add(control);
+    }
+
+    public void SetValue(object value)
+    {
+        _itemControls.Clear();
+        _itemsPanel.Children.Clear();
+
+        if (value is IEnumerable list)
+        {
+            foreach (var item in list)
+            {
+                AddItem(item);
+            }
+        }
+    }
+
+    public object GetValue()
+    {
+        return ConvertArray(_itemControls.Select(c => c.GetValue()).ToArray(), _elementType);
+    }
+    
+    public static Array ConvertArray(Array sourceArray, Type targetType)
+    {
+        int length = sourceArray.Length;
+        var newArray = Array.CreateInstance(targetType, length);
+
+        for (int i = 0; i < length; i++)
+        {
+            var value = sourceArray.GetValue(i);
+            var converted = Convert.ChangeType(value, targetType);
+            newArray.SetValue(converted, i);
+        }
+
+        return newArray;
+    }
+}

Nebula.Launcher/Configurations/ComplexConVarBinder.cs

@@ -0,0 +1,86 @@
+using System;
+using System.ComponentModel;
+using System.Threading;
+using System.Threading.Tasks;
+using Nebula.Shared.Configurations;
+
+namespace Nebula.Launcher.Configurations;
+
+public abstract class ComplexConVarBinder<T> : INotifyPropertyChanged, INotifyPropertyChanging
+{
+    private readonly ConVarObserver<T> _baseConVar;
+    private readonly Lock _lock = new();
+    private readonly SemaphoreSlim _valueChangeSemaphore = new(1, 1);
+
+    public T? Value
+    {
+        get
+        {
+            lock (_lock)
+            {
+                return _baseConVar.Value;
+            }
+        }
+        set
+        {
+            _ = SetValueAsync(value);
+        }
+    }
+    
+    public bool HasValue
+    {
+        get
+        {
+            lock (_lock)
+            {
+                return _baseConVar.HasValue;
+            }
+        }
+    }
+
+    protected ComplexConVarBinder(ConVarObserver<T> baseConVar)
+    {
+        _baseConVar = baseConVar ?? throw new ArgumentNullException(nameof(baseConVar));
+        _baseConVar.PropertyChanged += BaseConVarOnPropertyChanged;
+        _baseConVar.PropertyChanging += BaseConVarOnPropertyChanging;
+    }
+    
+
+    private async Task SetValueAsync(T? value)
+    {
+        await _valueChangeSemaphore.WaitAsync().ConfigureAwait(false);
+
+        try
+        {
+            var newValue = await OnValueChange(value).ConfigureAwait(false);
+
+            lock (_lock)
+            {
+                _baseConVar.Value = newValue;
+            }
+        }
+        finally
+        {
+            _valueChangeSemaphore.Release();
+        }
+    }
+
+    protected abstract Task<T?> OnValueChange(T? newValue);
+
+    private void BaseConVarOnPropertyChanged(object? sender, PropertyChangedEventArgs e)
+    {
+        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(HasValue)));
+        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(Value)));
+    }
+    
+    private void BaseConVarOnPropertyChanging(object? sender, PropertyChangingEventArgs e)
+    {
+        PropertyChanging?.Invoke(this, new PropertyChangingEventArgs(nameof(HasValue)));
+        PropertyChanging?.Invoke(this, new PropertyChangingEventArgs(nameof(Value)));
+    }
+    
+
+    public event PropertyChangedEventHandler? PropertyChanged;
+
+    public event PropertyChangingEventHandler? PropertyChanging;
+}

Nebula.Launcher/Configurations/ComplexUnitConfigControl.cs

@@ -0,0 +1,68 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Layout;
+
+namespace Nebula.Launcher.ViewModels.Pages;
+
+public sealed class ComplexUnitConfigControl : Border, IConfigControl
+{
+    private readonly List<(PropertyInfo, IConfigControl)> _units = [];
+    
+    private Type _objectType = typeof(object);
+
+    private readonly StackPanel _panel = new();
+    
+    public string ConfigName { get; }
+    public bool Dirty => _units.Any(dirty => dirty.Item2.Dirty);
+
+    public ComplexUnitConfigControl(string name, object obj)
+    {
+        Classes.Add("ConfigBorder");
+        _panel.Orientation = Orientation.Vertical;
+        _panel.Spacing = 4f;
+        ConfigName = name;
+        Child = _panel;
+        SetValue(obj);
+    }
+
+    public void SetValue(object value)
+    {
+        _units.Clear();
+        _panel.Children.Clear();
+        _objectType = value.GetType();
+        
+        _panel.Children.Add(new Label()
+        {
+            Content = ConfigName
+        });
+        
+        foreach (var propInfo in _objectType.GetProperties())
+        {
+            if(propInfo.PropertyType.IsInterface) 
+                continue;
+            
+            var propValue = propInfo.GetValue(value);
+
+            var control = ConfigControlHelper.GetConfigControl(propInfo.Name, propValue!);
+            
+            ((Control)control).Margin = new Thickness(5);
+            _panel.Children.Add((Control)control);
+            _units.Add((propInfo,control));
+        }
+    }
+
+    public object GetValue()
+    {
+        var obj = ConfigControlHelper.CreateDefaultValue(_objectType);
+        foreach (var (fieldInfo, configControl) in _units)
+        {
+            fieldInfo.SetValue(obj, configControl.GetValue());
+        }
+
+        return obj!;
+    }
+}

Nebula.Launcher/Configurations/ConfigControlHelper.cs

@@ -0,0 +1,39 @@
+using System;
+using System.Linq;
+
+namespace Nebula.Launcher.ViewModels.Pages;
+
+public static class ConfigControlHelper{
+    public static IConfigControl GetConfigControl(string name,object value)
+    {
+        switch (value)
+        {
+            case string stringValue:
+                return new StringUnitConfigControl(name, stringValue);
+            case int intValue:
+                return new IntUnitConfigControl(name, intValue);
+            case float floatValue:
+                return new FloatUnitConfigControl(name, floatValue);
+        }
+        
+        var valueType = value.GetType();
+
+        if (valueType.IsArray)
+            return new ArrayUnitConfigControl(name, value);
+        
+        return new ComplexUnitConfigControl(name, value);
+    }
+
+    public static object? CreateDefaultValue(Type type)
+    {
+        if(type.IsValueType)
+            return Activator.CreateInstance(type);
+        
+        var ctor = type.GetConstructors().First();
+        var parameters = ctor.GetParameters()
+            .Select(p => CreateDefaultValue(p.ParameterType))
+            .ToArray();
+        
+        return ctor.Invoke(parameters);
+    }
+}

Nebula.Launcher/Configurations/FloatUnitConfigControl.cs

@@ -0,0 +1,19 @@
+using System.Globalization;
+
+namespace Nebula.Launcher.ViewModels.Pages;
+
+public sealed class FloatUnitConfigControl(string name, float value) : UnitConfigControl<float>(name, value)
+{
+
+    public CultureInfo CultureInfo = CultureInfo.InvariantCulture;
+
+    public override void SetConfValue(float value)
+    {
+        ConfigValue = value.ToString(CultureInfo);
+    }
+
+    public override float GetConfValue()
+    {
+        return float.Parse(ConfigValue, CultureInfo);
+    }
+}

Nebula.Launcher/Configurations/IConfigControl.cs

@@ -0,0 +1,9 @@
+namespace Nebula.Launcher.ViewModels.Pages;
+
+public interface IConfigControl
+{
+    public string ConfigName { get; }
+    public bool Dirty {get;}
+    public abstract void SetValue(object value);
+    public abstract object GetValue();
+}

Nebula.Launcher/Configurations/IntUnitConfigControl.cs

@@ -0,0 +1,14 @@
+namespace Nebula.Launcher.ViewModels.Pages;
+
+public sealed class IntUnitConfigControl(string name, int value) : UnitConfigControl<int>(name, value)
+{
+    public override void SetConfValue(int value)
+    {
+        ConfigValue = value.ToString();
+    }
+
+    public override int GetConfValue()
+    {
+        return int.Parse(ConfigValue);
+    }
+}

Nebula.Launcher/Configurations/StringUnitConfigControl.cs

@@ -0,0 +1,14 @@
+namespace Nebula.Launcher.ViewModels.Pages;
+
+public sealed class StringUnitConfigControl(string name, string value) : UnitConfigControl<string>(name, value)
+{
+    public override void SetConfValue(string value)
+    {
+        ConfigValue = value;
+    }
+
+    public override string GetConfValue()
+    {
+        return ConfigValue;
+    }
+}

Nebula.Launcher/Configurations/UnitConfigControl.cs

@@ -0,0 +1,53 @@
+using Avalonia.Controls;
+using Avalonia.Layout;
+
+namespace Nebula.Launcher.ViewModels.Pages;
+
+public abstract class UnitConfigControl<T> : Border, IConfigControl where T : notnull
+{
+    private readonly Label _nameLabel = new();
+    private readonly TextBox _valueLabel = new();
+    private string _originalValue;
+
+    private StackPanel _panel = new();
+    
+    public string ConfigName { get; }
+   
+    public bool Dirty => _originalValue != ConfigValue;
+
+    protected string ConfigValue
+    {
+        get => _valueLabel.Text ?? string.Empty;
+        set => _valueLabel.Text = value;
+    }
+
+    public UnitConfigControl(string name, T value)
+    {
+        Classes.Add("ConfigBorder");
+        ConfigName = name;
+        _panel.Orientation = Orientation.Horizontal;
+        _panel.Children.Add(_nameLabel);
+        _panel.Children.Add(_valueLabel);
+        
+        _nameLabel.Content = name;
+        _nameLabel.VerticalAlignment = VerticalAlignment.Center;
+        Child = _panel;
+        
+        SetConfValue(value);
+        _originalValue = ConfigValue;
+    }
+
+    public abstract void SetConfValue(T value);
+
+    public abstract T GetConfValue();
+    
+    public void SetValue(object value)
+    {
+        SetConfValue((T)value);
+    }
+
+    public object GetValue()
+    {
+        return GetConfValue()!;
+    }
+}

Nebula.Launcher/Controls/LocalizedLabel.cs

@@ -14,7 +14,7 @@ public class LocalizedLabel : Label
         set
         {
             SetValue(LocalIdProperty, value);
-            Content = LocalisationService.GetString(value);
+            Content = LocalizationService.GetString(value);
         }
     }
 }

Nebula.Launcher/Controls/SimpleGraph.cs

@@ -0,0 +1,157 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Collections.Specialized;
+using System.Linq;
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Media;
+using Avalonia.Reactive;
+using Avalonia.Threading;
+
+namespace Nebula.Launcher.Controls;
+
+public class SimpleGraph : Control
+{
+    // Bindable data: list of doubles or points
+    public static readonly StyledProperty<ObservableCollection<double>> ValuesProperty =
+        AvaloniaProperty.Register<SimpleGraph,ObservableCollection<double>>(nameof(Values));
+
+    public static readonly StyledProperty<IBrush> GraphBrushProperty =
+        AvaloniaProperty.Register<SimpleGraph, IBrush>(nameof(GraphBrush), Brushes.CornflowerBlue);
+    
+    public static readonly StyledProperty<IBrush> GridBrushProperty =
+        AvaloniaProperty.Register<SimpleGraph, IBrush>(nameof(GridBrush), Brushes.LightGray);
+
+    static SimpleGraph()
+    {
+        ValuesProperty.Changed.Subscribe(
+            new AnonymousObserver<AvaloniaPropertyChangedEventArgs<ObservableCollection<double>>>(args =>
+            {
+                if (args.Sender is not SimpleGraph g) 
+                    return;
+                
+                g.InvalidateVisual();
+                g.Values.CollectionChanged += g.ValuesOnCollectionChanged;
+            }));
+    }
+    
+    public SimpleGraph()
+    {
+        Values = new ObservableCollection<double>();
+    }
+
+    private void ValuesOnCollectionChanged(object? sender, NotifyCollectionChangedEventArgs e)
+    {
+        Dispatcher.UIThread.Post(InvalidateVisual);
+    }
+
+    public ObservableCollection<double> Values
+    {
+        get => GetValue(ValuesProperty);
+        set => SetValue(ValuesProperty, value);
+    }
+
+
+    public IBrush GraphBrush
+    {
+        get => GetValue(GraphBrushProperty);
+        set => SetValue(GraphBrushProperty, value);
+    }
+    
+    public IBrush GridBrush
+    {
+        get => GetValue(GridBrushProperty);
+        set => SetValue(GridBrushProperty, value);
+    }
+
+    public override void Render(DrawingContext context)
+    {
+        base.Render(context);
+        
+        
+        if (Bounds.Width <= 0 || Bounds.Height <= 0)
+            return;
+        
+        // background grid
+        DrawGrid(context, Bounds);
+        
+        if (Values.Count == 0)
+            return;
+
+
+        var min = Values.Min();
+        var max = Values.Max();
+        if (Math.Abs(min - max) < 0.001)
+        {
+            min -= 1;
+            max += 1;
+        }
+
+
+        var geo = new StreamGeometry();
+        using (var ctx = geo.Open())
+        {
+            if (Values.Count > 1)
+            {
+                Point p0 = Map(0, Values[0]);
+                ctx.BeginFigure(p0, false);
+
+
+                for (int i = 0; i < Values.Count - 1; i++)
+                {
+                    var p1 = Map(i, Values[i]);
+                    var p2 = Map(i + 1, Values[i + 1]);
+
+
+                    // control points for smoothing
+                    var c1 = new Point((p1.X + p2.X) / 2, p1.Y);
+                    var c2 = new Point((p1.X + p2.X) / 2, p2.Y);
+
+
+                    ctx.CubicBezierTo(c1, c2, p2);
+                }
+                ctx.EndFigure(false);
+            }
+        }
+
+
+        // stroke
+        context.DrawGeometry(null, new Pen(GraphBrush, 2), geo);
+        
+        // draw points
+        for (var i = 0; i < Values.Count; i++)
+        {
+            var p = Map(i, Values[i]);
+            context.DrawEllipse(GraphBrush, null, p, 3, 3);
+        }
+
+        return;
+
+        // map data index/value -> point
+        Point Map(int i, double val)
+        {
+            var x = Bounds.X + Bounds.Width * (i / (double)Math.Max(1, Values.Count - 1));
+            var y = Bounds.Y + Bounds.Height - (val - min) / (max - min) * Bounds.Height;
+            return new Point(x, y);
+        }
+    }
+
+    private void DrawGrid(DrawingContext dc, Rect r)
+    {
+        var pen = new Pen(GridBrush, 0.5);
+        var rows = 4;
+        var cols = Math.Max(2, Values?.Count ?? 2);
+        for (var i = 0; i <= rows; i++)
+        {
+            var y = r.Y + i * (r.Height / rows);
+            dc.DrawLine(pen, new Point(r.X, y), new Point(r.Right, y));
+        }
+
+        for (var j = 0; j <= cols; j++)
+        {
+            var x = r.X + j * (r.Width / cols);
+            dc.DrawLine(pen, new Point(x, r.Y), new Point(x, r.Bottom));
+        }
+    }
+}

Nebula.Launcher/Converters/TypeConverters.cs

@@ -1,11 +1,13 @@
-using Avalonia;
-using Avalonia.Controls;
+using System;
 using Avalonia.Data.Converters;
 using Avalonia.Media;
+using Avalonia.Platform;
+using Nebula.Launcher.ViewModels.Pages;
+using Color = System.Drawing.Color;
 
 namespace Nebula.Launcher.Converters;
 
-public class TypeConverters
+public static class TypeConverters
 {
     public static FuncValueConverter<string, string?> IconConverter { get; } =
         new(iconKey =>
@@ -13,4 +15,17 @@ public class TypeConverters
             if (iconKey == null) return null;
             return $"/Assets/svg/{iconKey}.svg";
         });
+    
+    public static FuncValueConverter<string, IImage?> ImageConverter { get; } =
+        new(iconKey =>
+        {
+            if (iconKey == null) return null;
+            return new Avalonia.Media.Imaging.Bitmap(AssetLoader.Open(new Uri($"avares://Nebula.Launcher/Assets/error_presentation/{iconKey}.png")));
+        });
+
+    public static FuncValueConverter<string, Avalonia.Media.Color> NameColorRepresentation { get; } =
+        new((str)=>ColorUtils.GetColorFromString(str ?? throw new ArgumentNullException(nameof(str),"Name of color is null!")));
+    
+    public static FuncValueConverter<string, bool> StringIsNotEmpty { get; } =
+        new(iconKey => !string.IsNullOrEmpty(iconKey));
 }

Nebula.Launcher/LauncherConVar.cs

@@ -3,6 +3,8 @@ using System.Globalization;
 using Nebula.Launcher.Models;
 using Nebula.Launcher.Models.Auth;
 using Nebula.Shared.ConfigMigrations;
+using Nebula.Shared.Configurations;
+using Nebula.Shared.Configurations.Migrations;
 using Nebula.Shared.Services;
 
 namespace Nebula.Launcher;
@@ -12,10 +14,11 @@ public static class LauncherConVar
     public static readonly ConVar<bool> DoMigration =
         ConVarBuilder.Build("migration.doMigrate", true);
     
-    public static readonly ConVar<AuthTokenCredentials[]> AuthProfiles =
-        ConVarBuilder.BuildWithMigration<AuthTokenCredentials[]>("auth.profiles.v3", 
+    public static readonly ConVar<string[]> AuthProfiles =
+        ConVarBuilder.BuildWithMigration<string[]>("auth.profiles.v4", 
             MigrationQueueBuilder.Instance
-                .With(new ProfileMigrationV2("auth.profiles.v2","auth.profiles.v3"))
+                .With(new ProfileMigrationV2("auth.profiles.v2","auth.profiles.v4"))
+                .With(new ProfileMigrationV3V4("auth.profiles.v3","auth.profiles.v4"))
                 .Build(), 
             []);
 
@@ -34,18 +37,22 @@ public static class LauncherConVar
             "WizDen", 
             [
                 "https://harpy.durenko.tatar/auth-api/",
+                "https://auth.spacestation14.com/",
                 "https://auth.fallback.spacestation14.com/",
+            ]),
+        new AuthServerCredentials(
+            "SimpleStation", 
+            [
+                "https://auth.simplestation.org/",
             ])
     ]);
     
     public static readonly ConVar<ServerHubRecord[]> Hub = ConVarBuilder.Build<ServerHubRecord[]>("launcher.hub.v2", [
         new ServerHubRecord("WizDen", "https://harpy.durenko.tatar/hub-api/api/servers"),
-        new ServerHubRecord("AltHub","https://web.networkgamez.com/api/servers")
+        new ServerHubRecord("AltHub","https://hub.singularity14.co.uk/api/servers")
     ]);
 
     public static readonly ConVar<string> CurrentLang = ConVarBuilder.Build<string>("launcher.language", CultureInfo.CurrentCulture.Name);
     public static readonly ConVar<string> ILSpyUrl = ConVarBuilder.Build<string>("decompiler.url",
     "https://github.com/icsharpcode/ILSpy/releases/download/v9.0/ILSpy_binaries_9.0.0.7889-x64.zip");
-    
-    
 }

Nebula.Launcher/MessageBox/MessageView.axaml

@@ -2,16 +2,9 @@
              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"
+             xmlns:views="clr-namespace:Nebula.Launcher.Views"
              mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
-             Width="600"
-             Height="400"
+            
              x:Class="Nebula.Launcher.MessageBox.MessageView">
-    <Grid RowDefinitions="50,*" ColumnDefinitions="*">
-        <Border Grid.Column="0" Background="#222222" Padding="10" BorderBrush="#444444" BorderThickness="0,0,0,3">
-            <Label VerticalAlignment="Center" x:Name="Title">Text</Label>
-        </Border>
-        <Panel Margin="5" Grid.Row="1">
-            <Label x:Name="Message">Message</Label>
-        </Panel>
-    </Grid>
+    <views:VisualErrorView x:Name="ErrorView"/>
 </UserControl>

Nebula.Launcher/MessageBox/MessageView.axaml.cs

@@ -1,21 +1,22 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
+using Nebula.Launcher.ViewModels;
 
 namespace Nebula.Launcher.MessageBox;
 
 public partial class MessageView : UserControl, IMessageContainerProvider
 {
-    public MessageView(out IMessageContainerProvider provider)
+    private readonly VisualErrorViewModel _context;
+    public MessageView()
     {
         InitializeComponent();
-        provider = this;
+        _context = new VisualErrorViewModel();
+        ErrorView.Content = _context;
     }
 
     public void ShowMessage(string message, string title)
     {
-        Title.Content = title;
-        Message.Content = message;
+        _context.Title = title;
+        _context.Description = message;
     }
 }
 

Nebula.Launcher/MessageBox/MessageWindow.axaml

@@ -3,10 +3,52 @@
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         xmlns:messageBox="clr-namespace:Nebula.Launcher.MessageBox"
-        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+        SystemDecorations="BorderOnly"
+        mc:Ignorable="d" d:DesignWidth="600" d:DesignHeight="260"
         Width="600"
-        Height="400"
+        Height="260"
+        CanResize="False"
         x:Class="Nebula.Launcher.MessageBox.MessageWindow"
         Title="MessageWindow">
-    
+     <Grid ColumnDefinitions="*" RowDefinitions="30,*">
+            <messageBox:MessageView
+                Grid.Column="0"
+                Grid.Row="0"
+                Grid.RowSpan="2"
+                x:Name="MessageView" />
+            <Border
+                
+                BorderThickness="0,0,0,2"
+                CornerRadius="0"
+                Grid.Column="0"
+                Grid.Row="0">
+                <Border.BorderBrush>
+                    <LinearGradientBrush EndPoint="100%,50%" StartPoint="0%,50%">
+                        <GradientStop Color="#222222" Offset="0.0" />
+                        <GradientStop Color="#442222" Offset="1.0" />
+                    </LinearGradientBrush>
+                </Border.BorderBrush>
+                <Panel
+                    Height="30"
+                    PointerPressed="InputElement_OnPointerPressed">
+                    <TextBlock
+                        FontSize="10"
+                        Foreground="White"
+                        IsVisible="False"
+                        Margin="15,0"
+                        Text="Nebula Launcher"
+                        VerticalAlignment="Center" />
+                    <StackPanel
+                        HorizontalAlignment="Right"
+                        Margin="5,0,5,0"
+                        Orientation="Horizontal"
+                        Spacing="8">
+                        <Button
+                            Click="Close_Click"
+                            Content="🗙"
+                            Foreground="Azure" />
+                    </StackPanel>
+                </Panel>
+            </Border>
+        </Grid>
 </Window>

Nebula.Launcher/MessageBox/MessageWindow.axaml.cs

@@ -1,12 +1,28 @@
 using Avalonia.Controls;
+using Avalonia.Input;
+using Avalonia.Interactivity;
 
 namespace Nebula.Launcher.MessageBox;
 
-public partial class MessageWindow : Window
+public partial class MessageWindow : Window, IMessageContainerProvider
 { 
-    public MessageWindow(out IMessageContainerProvider provider)
+    public MessageWindow()
     {
         InitializeComponent();
-        Content = new MessageView(out provider);
+    }
+
+    public void ShowMessage(string message, string title)
+    {
+        MessageView.ShowMessage(message, title);
+    }
+    
+    private void Close_Click(object? sender, RoutedEventArgs e)
+    {
+        Close();
+    }
+
+    private void InputElement_OnPointerPressed(object? sender, PointerPressedEventArgs e)
+    {
+        BeginMoveDrag(e);
     }
 }

Nebula.Launcher/Models/Auth/ProfileAuthCredentials.cs

@@ -1,10 +1,12 @@
 using System.Text.Json.Serialization;
 using System.Windows.Input;
+using Avalonia.Media;
 using Nebula.Shared.Services;
 
 namespace Nebula.Launcher.Models.Auth;
 
-public sealed record ProfileAuthCredentials(
-    AuthTokenCredentials Credentials,
+public sealed record ProfileEntry(
+    ProfileAuthCredentials Credentials, 
+    string AuthName,
     [property: JsonIgnore] ICommand OnSelect = default!,
     [property: JsonIgnore] ICommand OnDelete = default!);

Nebula.Launcher/Nebula.Launcher.csproj

@@ -31,7 +31,7 @@
         <PackageReference Include="JetBrains.Annotations" Version="2024.3.0"/>
         <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="9.0.0"/>
         <PackageReference Include="libsodium" Version="1.0.20"/>
-        <PackageReference Include="Robust.Natives" Version="0.1.1" />
+        <PackageReference Include="Robust.Natives" Version="0.2.3" />
     </ItemGroup>
 
     <ItemGroup>

Nebula.Launcher/ProcessHelper/GameProcessStartInfoProvider.cs

@@ -35,7 +35,7 @@ public sealed class GameProcessStartInfoProvider(DotnetResolverService resolverS
     {
         var baseStart = await base.GetProcessStartInfo();
         
-        var authProv = accountInfoViewModel.Credentials;
+        var authProv = accountInfoViewModel.Credentials.Value;
         if(authProv is null) 
             throw new Exception("Client is without selected auth");
 

Nebula.Launcher/ProcessHelper/GameRunnerPreparer.cs

@@ -5,23 +5,39 @@ using Microsoft.Extensions.DependencyInjection;
 using Nebula.Shared;
 using Nebula.Shared.Models;
 using Nebula.Shared.Services;
+using Nebula.Shared.Utils;
+using Robust.LoaderApi;
 
 namespace Nebula.Launcher.ProcessHelper;
 
 [ServiceRegister]
 public sealed class GameRunnerPreparer(IServiceProvider provider, ContentService contentService, EngineService engineService)
 {
-    public async Task<ProcessRunHandler<GameProcessStartInfoProvider>> GetGameProcessStartInfoProvider(RobustUrl address, ILoadingHandler loadingHandler, CancellationToken cancellationToken = default)
+    public async Task<ProcessRunHandler<GameProcessStartInfoProvider>> GetGameProcessStartInfoProvider(RobustUrl address, ILoadingHandlerFactory loadingHandlerFactory, CancellationToken cancellationToken = default)
     {
         var buildInfo = await contentService.GetBuildInfo(address, cancellationToken);
         
-        var engine = await engineService.EnsureEngine(buildInfo.BuildInfo.Build.EngineVersion);
+        var engine = await engineService.EnsureEngine(buildInfo.BuildInfo.Build.EngineVersion, loadingHandlerFactory, cancellationToken);
 
         if (engine is null)
             throw new Exception("Engine version not found: " + buildInfo.BuildInfo.Build.EngineVersion);
 
-        await contentService.EnsureItems(buildInfo.RobustManifestInfo, loadingHandler, cancellationToken);
-        await engineService.EnsureEngineModules("Robust.Client.WebView", buildInfo.BuildInfo.Build.EngineVersion);
+        var hashApi = await contentService.EnsureItems(buildInfo.RobustManifestInfo, loadingHandlerFactory, cancellationToken);
+       
+        
+        if (hashApi.TryOpen("manifest.yml", out var stream))
+        {
+            var modules = ContentManifestParser.ExtractModules(stream);
+
+            foreach (var moduleStr in modules)
+            {
+                var module = await engineService.EnsureEngineModules(moduleStr, loadingHandlerFactory, buildInfo.BuildInfo.Build.EngineVersion);
+                if(module is null) 
+                    throw new Exception("Module not found: " + moduleStr);
+            }
+            
+            await stream.DisposeAsync();
+        }
 
         var gameInfo =
             provider.GetService<GameProcessStartInfoProvider>()!.WithBuildInfo(buildInfo.BuildInfo.Auth.PublicKey,

Nebula.Launcher/ServerListProviders/HubServerListProvider.cs

@@ -74,6 +74,7 @@ public sealed partial class HubServerListProvider : IServerListProvider
         catch (Exception e)
         {
             _errors.Add(new Exception($"Some error while loading server list from {HubUrl}. See inner exception", e));
+            _errors.Add(e);
         }
         
         IsLoaded = true;

Nebula.Launcher/Services/DecompilerService.cs

@@ -6,6 +6,7 @@ using System.IO;
 using System.IO.Compression;
 using System.Linq;
 using System.Net.Http;
+using System.Threading;
 using System.Threading.Tasks;
 using Nebula.Launcher.ViewModels.Popup;
 using Nebula.Shared;
@@ -25,7 +26,6 @@ public sealed partial class DecompilerService
     [GenerateProperty] private ViewHelperService ViewHelperService {get;}
     [GenerateProperty] private ContentService ContentService {get;}
     [GenerateProperty] private FileService FileService {get;}
-    [GenerateProperty] private CancellationService CancellationService {get;}
     [GenerateProperty] private EngineService EngineService {get;}
     [GenerateProperty] private DebugService DebugService {get;}
 
@@ -44,16 +44,14 @@ public sealed partial class DecompilerService
         Process.Start(startInfo);
     }
 
-    public async void OpenServerDecompiler(RobustUrl url)
+    public async void OpenServerDecompiler(RobustUrl url, CancellationToken cancellationToken)
     {
         var myTempDir = FileService.EnsureTempDir(out var tmpDir);
 
-        ILoadingHandler loadingHandler = ViewHelperService.GetViewModel<LoadingContextViewModel>();
-        
+        using var loadingHandler = ViewHelperService.GetViewModel<LoadingContextViewModel>();
         var buildInfo =
-            await ContentService.GetBuildInfo(url, CancellationService.Token);
-        var engine = await EngineService.EnsureEngine(buildInfo.BuildInfo.Build.EngineVersion);
-
+            await ContentService.GetBuildInfo(url, cancellationToken);
+        var engine = await EngineService.EnsureEngine(buildInfo.BuildInfo.Build.EngineVersion, loadingHandler, cancellationToken);
         if (engine is null)
             throw new Exception("Engine version not found: " + buildInfo.BuildInfo.Build.EngineVersion);
 
@@ -64,8 +62,9 @@ public sealed partial class DecompilerService
             await stream.DisposeAsync();
         }
 
-        var hashApi = await ContentService.EnsureItems(buildInfo.RobustManifestInfo, loadingHandler, CancellationService.Token);
 
+        var hashApi = await ContentService.EnsureItems(buildInfo.RobustManifestInfo, loadingHandler, cancellationToken);
+        
         foreach (var (file, hash) in hashApi.Manifest)
         {
             if(!file.Contains(".dll") || !hashApi.TryOpen(hash, out var stream)) continue;
@@ -73,8 +72,6 @@ public sealed partial class DecompilerService
             await stream.DisposeAsync();
         }
         
-        ((IDisposable)loadingHandler).Dispose();
-        
         _logger.Log("File extracted. " + tmpDir);
         
         OpenDecompiler(string.Join(' ', myTempDir.AllFiles.Select(f=>Path.Join(tmpDir, f))) + " --newinstance");
@@ -94,7 +91,7 @@ public sealed partial class DecompilerService
     private async Task Download(){
         using var loading = ViewHelperService.GetViewModel<LoadingContextViewModel>();
         loading.LoadingName = "Download ILSpy";
-        loading.SetJobsCount(1);
+        loading.CreateLoadingContext().SetJobsCount(1);
         PopupMessageService.Popup(loading);
         using var response = await _httpClient.GetAsync(ConfigurationService.GetConfigValue(LauncherConVar.ILSpyUrl));
         using var zipArchive = new ZipArchive(await response.Content.ReadAsStreamAsync());

Nebula.Launcher/Services/LocalizationService.cs

@@ -11,7 +11,7 @@ using Nebula.Shared.Services;
 namespace Nebula.Launcher.Services;
 
 [ConstructGenerator, ServiceRegister]
-public partial class LocalisationService
+public partial class LocalizationService
 {
     [GenerateProperty] private ConfigurationService ConfigurationService { get; }
     [GenerateProperty] private DebugService DebugService { get; }
@@ -68,12 +68,12 @@ public partial class LocalisationService
 public class LocaledText : MarkupExtension
 {
     public string Key { get; set; } 
+    public Dictionary<string, object>? Options { get; set; }
 
     public LocaledText(string key) => Key = key;
 
     public override object ProvideValue(IServiceProvider serviceProvider)
     {
-        // Fetch the localized string using the key
-        return LocalisationService.GetString(Key);
+        return LocalizationService.GetString(Key, Options);
     }
 }

Nebula.Launcher/ViewModels/MainViewModel.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.IO;
 using System.Linq;
+using Avalonia.Logging;
 using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.Input;
 using Nebula.Launcher.Models;
@@ -40,17 +41,9 @@ public partial class MainViewModel : ViewModelBase
     [ObservableProperty] private bool _isPopupClosable = true;
     [ObservableProperty] private bool _popup;
     [ObservableProperty] private ListItemTemplate? _selectedListItem;
-
-    public bool IsLoggedIn => AccountInfoViewModel.Credentials is not null;
-    public string LoginName => AccountInfoViewModel.Credentials?.Login ?? string.Empty;
+    [ObservableProperty] private string? _loginText = LocalizationService.GetString("auth-current-login-no-name");
     
-    public string LoginText => LocalisationService.GetString("auth-current-login-name", 
-        new Dictionary<string, object>
-    {
-        { "login", LoginName }
-    });
-
-    [GenerateProperty] private LocalisationService LocalisationService { get; } // Не убирать! Без этой хуйни вся локализация идет в пизду!
+    [GenerateProperty] private LocalizationService LocalizationService { get; } // Не убирать! Без этой хуйни вся локализация идет в пизду!
     [GenerateProperty] private AccountInfoViewModel AccountInfoViewModel { get; }
     [GenerateProperty] private DebugService DebugService { get; } = default!;
     [GenerateProperty] private PopupMessageService PopupMessageService { get; } = default!;
@@ -66,7 +59,7 @@ public partial class MainViewModel : ViewModelBase
     {
         Items = new ObservableCollection<ListItemTemplate>(_templates.Select(a=>
         {
-            return a with { Label = LocalisationService.GetString(a.Label) };
+            return a with { Label = LocalizationService.GetString(a.Label) };
         }
         ));
         RequirePage<AccountInfoViewModel>();
@@ -74,15 +67,15 @@ public partial class MainViewModel : ViewModelBase
 
     protected override void Initialise()
     {
-        AccountInfoViewModel.PropertyChanged += (sender, args) =>
+        AccountInfoViewModel.Credentials.PropertyChanged += (_, args) =>
         {
-            if (args.PropertyName != nameof(AccountInfoViewModel.Credentials)) 
+            if (args.PropertyName is not nameof(AccountInfoViewModel.Credentials.Value)) 
                 return;
-            
-            OnPropertyChanged(nameof(LoginText));
-            OnPropertyChanged(nameof(IsLoggedIn));
+            UpdateCredentialsInfo();
         };
-        
+
+        UpdateCredentialsInfo();
+
         _logger = DebugService.GetLogger(this);
 
         using var stream = typeof(MainViewModel).Assembly
@@ -99,24 +92,45 @@ public partial class MainViewModel : ViewModelBase
         CheckMigration();
         
         var loadingHandler = ViewHelperService.GetViewModel<LoadingContextViewModel>();
-        loadingHandler.LoadingName = LocalisationService.GetString("migration-config-task");
+        loadingHandler.LoadingName = LocalizationService.GetString("migration-config-task");
         loadingHandler.IsCancellable = false;
         ConfigurationService.MigrateConfigs(loadingHandler);
         
         if (!VCRuntimeDllChecker.AreVCRuntimeDllsPresent())
         {
-            OnPopupRequired(LocalisationService.GetString("vcruntime-check-error"));
+            OnPopupRequired(LocalizationService.GetString("vcruntime-check-error"));
             Helper.OpenBrowser("https://learn.microsoft.com/en-us/cpp/windows/latest-supported-vc-redist?view=msvc-170");
         }
     }
 
+    private void UpdateCredentialsInfo()
+    {
+        if(AccountInfoViewModel.Credentials.HasValue)
+        {
+            LoginText =
+                LocalizationService.GetString("auth-current-login-name",
+                    new Dictionary<string, object>
+                    {
+                        { "login", AccountInfoViewModel.Credentials.Value?.Login ?? "" },
+                        {
+                            "auth_server",
+                            AccountInfoViewModel.GetServerAuthName(AccountInfoViewModel.Credentials.Value?.AuthServer) ?? ""
+                        }
+                    });
+        }
+        else
+        {
+            LoginText =  LocalizationService.GetString("auth-current-login-no-name");
+        }
+    }
+
     private void CheckMigration()
     {
         if (!ConfigurationService.GetConfigValue(LauncherConVar.DoMigration))
             return;
 
         var loadingHandler = ViewHelperService.GetViewModel<LoadingContextViewModel>();
-        loadingHandler.LoadingName = LocalisationService.GetString("migration-label-task");
+        loadingHandler.LoadingName = LocalizationService.GetString("migration-label-task");
         loadingHandler.IsCancellable = false;
 
         if (!ContentService.CheckMigration(loadingHandler))

Nebula.Launcher/ViewModels/Pages/AccountInfoViewModel.cs

@@ -5,11 +5,12 @@ using System.Linq;
 using System.Net.Http;
 using System.Threading.Tasks;
 using CommunityToolkit.Mvvm.ComponentModel;
-using CommunityToolkit.Mvvm.Input;
+using Nebula.Launcher.Configurations;
 using Nebula.Launcher.Models.Auth;
 using Nebula.Launcher.Services;
 using Nebula.Launcher.ViewModels.Popup;
 using Nebula.Launcher.Views.Pages;
+using Nebula.Shared.Configurations;
 using Nebula.Shared.Models.Auth;
 using Nebula.Shared.Services;
 using Nebula.Shared.Services.Logging;
@@ -23,82 +24,52 @@ namespace Nebula.Launcher.ViewModels.Pages;
 public partial class AccountInfoViewModel : ViewModelBase
 {
     [ObservableProperty] private bool _authMenuExpand;
-
     [ObservableProperty] private bool _authUrlConfigExpand;
-
     [ObservableProperty] private int _authViewSpan = 1;
-
     [ObservableProperty] private string _currentAuthServer = string.Empty;
-
     [ObservableProperty] private string _currentLogin = string.Empty;
-
     [ObservableProperty] private string _currentPassword = string.Empty;
-
     [ObservableProperty] private bool _isLogged;
     [ObservableProperty] private bool _doRetryAuth;
-    [ObservableProperty] private AuthTokenCredentials? _credentials;
+    [ObservableProperty] private AuthServerCredentials _authItemSelect;
+    [ObservableProperty] private string _authServerName;
 
     private bool _isProfilesEmpty;
-    [GenerateProperty] private PopupMessageService PopupMessageService { get; } = default!;
-    [GenerateProperty] private ConfigurationService ConfigurationService { get; } = default!;
+    [GenerateProperty] private PopupMessageService PopupMessageService { get; }
+    [GenerateProperty] private ConfigurationService ConfigurationService { get; } 
     [GenerateProperty] private DebugService DebugService { get; }
-    [GenerateProperty] private AuthService AuthService { get; } = default!;
-    [GenerateProperty, DesignConstruct] private ViewHelperService ViewHelperService { get; } = default!;
+    [GenerateProperty] private AuthService AuthService { get; } 
+    [GenerateProperty, DesignConstruct] private ViewHelperService ViewHelperService { get; } 
 
-    public ObservableCollection<ProfileAuthCredentials> Accounts { get; } = new();
+    public ObservableCollection<ProfileEntry> Accounts { get; } = new();
     public ObservableCollection<AuthServerCredentials> AuthUrls { get; } = new();
 
-    [ObservableProperty] private AuthServerCredentials _authItemSelect;
+    public ComplexConVarBinder<AuthTokenCredentials?> Credentials { get; private set; }
 
     private ILogger _logger;
-
+    
     //Design think
     protected override void InitialiseInDesignMode()
     {
-        AddAccount(new AuthTokenCredentials(Guid.Empty, LoginToken.Empty, "Binka", ""));
-        AddAccount(new AuthTokenCredentials(Guid.Empty, LoginToken.Empty, "Binka", ""));
+        AuthUrls.Add(new AuthServerCredentials("Test",["example.com","variant.lab"]));
         
-        AuthUrls.Add(new AuthServerCredentials("Test",["example.com"]));
+        AddAccount(new ProfileAuthCredentials("Binka", "","example.com"));
+        AddAccount(new ProfileAuthCredentials("Vilka","", "variant.lab"));
     }
-
+    
     //Real think
     protected override void Initialise()
     {
         _logger = DebugService.GetLogger(this);
+        Credentials = new AuthTokenCredentialsVar(this);
         Task.Run(ReadAuthConfig);
+        Credentials.Value = Credentials.Value;
     }
-
-    public async void AuthByProfile(ProfileAuthCredentials credentials)
-    {
-        var message = ViewHelperService.GetViewModel<InfoPopupViewModel>();
-        message.InfoText = LocalisationService.GetString("auth-try-auth-profile");
-        message.IsInfoClosable = false;
-        PopupMessageService.Popup(message);
-        
-        try
-        {
-            await CatchAuthError(async () => await TryAuth(credentials.Credentials), () => message.Dispose());
-        }
-        catch (Exception ex)
-        {
-            CurrentLogin = credentials.Credentials.Login;
-            CurrentAuthServer = credentials.Credentials.AuthServer;
-            
-            var unexpectedError = new Exception(LocalisationService.GetString("auth-error"), ex);
-            _logger.Error(unexpectedError);
-            PopupMessageService.Popup(unexpectedError);
-            return;
-        }
-        
-        ConfigurationService.SetConfigValue(LauncherConVar.AuthCurrent, Credentials);
-        
-        message.Dispose();
-    }
-
+    
     public void DoAuth(string? code = null)
     {
         var message = ViewHelperService.GetViewModel<InfoPopupViewModel>();
-        message.InfoText = LocalisationService.GetString("auth-processing");
+        message.InfoText = LocalizationService.GetString("auth-processing");
         message.IsInfoClosable = false;
         PopupMessageService.Popup(message);
 
@@ -112,54 +83,32 @@ public partial class AccountInfoViewModel : ViewModelBase
         Task.Run(async () =>
         {
             Exception? exception = null;
+            
             foreach (var server in serverCandidates)
             {
                 try
                 {
-                    await CatchAuthError(async () => await TryAuth(CurrentLogin, CurrentPassword, server, code), ()=> message.Dispose());
+                    await CatchAuthError(async() =>
+                    {
+                        Credentials.Value = await AuthService.Auth(CurrentLogin, CurrentPassword, server, code);
+                    }, ()=> message.Dispose());        
                     break;
                 }
                 catch (Exception ex)
                 {
-                    var unexpectedError = new Exception(LocalisationService.GetString("auth-error"), ex);
-                    _logger.Error(unexpectedError);
-                    PopupMessageService.Popup(unexpectedError);
+                    exception = new Exception(LocalizationService.GetString("auth-error"), ex);
                 }
             }
             
             message.Dispose();
 
-            if (!IsLogged)
+            if (exception != null)
             {
-                PopupMessageService.Popup(exception ?? new Exception(LocalisationService.GetString("auth-error")));
+                PopupMessageService.Popup(new Exception("Error while auth", exception));
             }
         });
     }
 
-    private async Task TryAuth(AuthTokenCredentials authTokenCredentials)
-    {
-        CurrentLogin = authTokenCredentials.Login;
-        CurrentAuthServer = authTokenCredentials.AuthServer;
-        await SetAuth(authTokenCredentials);
-        IsLogged = true;
-    }
-
-    private async Task SetAuth(AuthTokenCredentials authTokenCredentials)
-    {
-        await AuthService.EnsureToken(authTokenCredentials);
-        Credentials = authTokenCredentials;
-    }
-
-    private async Task TryAuth(string login, string password, string authServer, string? code)
-    {
-        Credentials = await AuthService.Auth(login, password, authServer, code);
-        CurrentLogin = login;
-        CurrentPassword = password;
-        CurrentAuthServer = authServer;
-        IsLogged = true;
-        ConfigurationService.SetConfigValue(LauncherConVar.AuthCurrent, Credentials);
-    }
-
     private async Task CatchAuthError(Func<Task> a, Action? onError)
     {
         DoRetryAuth = false;
@@ -176,15 +125,24 @@ public partial class AccountInfoViewModel : ViewModelBase
                 case AuthenticateDenyCode.TfaRequired:
                 case AuthenticateDenyCode.TfaInvalid:
                     var p = ViewHelperService.GetViewModel<TfaViewModel>();
-                    p.OnTfaEntered += OnTfaEntered;
                     PopupMessageService.Popup(p);
                     _logger.Log("TFA required");
                     break;
                 case AuthenticateDenyCode.InvalidCredentials:
-                    PopupError(LocalisationService.GetString("auth-invalid-credentials"), e);
+                    PopupError(LocalizationService.GetString("auth-invalid-credentials"), e);
+                    break;
+                case AuthenticateDenyCode.AccountLocked:
+                    PopupError(LocalizationService.GetString("auth-account-locked"), e);
+                    break;
+                case AuthenticateDenyCode.AccountUnconfirmed:
+                    PopupError(LocalizationService.GetString("auth-account-unconfirmed"), e);
+                    break;
+                case AuthenticateDenyCode.None:
+                    PopupError(LocalizationService.GetString("auth-none"),e);
                     break;
                 default:
-                    throw;
+                    PopupError(LocalizationService.GetString("auth-error-fuck"), e);
+                    break;
             }
         }
         catch (HttpRequestException e)
@@ -193,22 +151,46 @@ public partial class AccountInfoViewModel : ViewModelBase
             switch (e.HttpRequestError)
             {
                 case HttpRequestError.ConnectionError:
-                    PopupError(LocalisationService.GetString("auth-connection-error"), e);
+                    PopupError(LocalizationService.GetString("auth-connection-error"), e);
                     DoRetryAuth = true;
                     break;
-
                 case HttpRequestError.NameResolutionError:
-                    PopupError(LocalisationService.GetString("auth-name-resolution-error"), e);
+                    PopupError(LocalizationService.GetString("auth-name-resolution-error"), e);
                     DoRetryAuth = true;
                     break;
-                
                 case HttpRequestError.SecureConnectionError:
-                    PopupError(LocalisationService.GetString("auth-secure-error"), e);
+                    PopupError(LocalizationService.GetString("auth-secure-error"), e);
                     DoRetryAuth = true;
                     break;
-
+                case HttpRequestError.UserAuthenticationError:
+                    PopupError(LocalizationService.GetString("auth-user-authentication-error"), e);
+                    break;
+                case HttpRequestError.Unknown:
+                    PopupError(LocalizationService.GetString("auth-unknown"), e);
+                    break;
+                case HttpRequestError.HttpProtocolError:
+                    PopupError(LocalizationService.GetString("auth-http-protocol-error"), e);
+                    break;
+                case HttpRequestError.ExtendedConnectNotSupported:
+                    PopupError(LocalizationService.GetString("auth-extended-connect-not-support"), e);
+                    break;
+                case HttpRequestError.VersionNegotiationError:
+                    PopupError(LocalizationService.GetString("auth-version-negotiation-error"), e);
+                    break;
+                case HttpRequestError.ProxyTunnelError:
+                    PopupError(LocalizationService.GetString("auth-proxy-tunnel-error"), e);
+                    break;
+                case HttpRequestError.InvalidResponse:
+                    PopupError(LocalizationService.GetString("auth-invalid-response"), e);
+                    break;
+                case HttpRequestError.ResponseEnded:
+                    PopupError(LocalizationService.GetString("auth-response-ended"), e);
+                    break;
+                case HttpRequestError.ConfigurationLimitExceeded:
+                    PopupError(LocalizationService.GetString("auth-configuration-limit-exceeded"), e);
+                    break;
                 default:
-                    var authError = new Exception(LocalisationService.GetString("auth-error"), e);
+                    var authError = new Exception(LocalizationService.GetString("auth-error"), e);
                     _logger.Error(authError);
                     PopupMessageService.Popup(authError);
                     break;
@@ -216,15 +198,16 @@ public partial class AccountInfoViewModel : ViewModelBase
         }
     }
 
-    private void OnTfaEntered(string code)
-    {
-        DoAuth(code);
-    }
-
     public void Logout()
     {
-        IsLogged = false;
-        Credentials = null;
+        Credentials.Value = null;
+        CurrentAuthServer = "";
+    }
+
+    public string GetServerAuthName(string? url)
+    {
+        if (url is null) return "";
+        return AuthUrls.FirstOrDefault(p => p.Servers.Contains(url))?.Name ?? "CustomAuth";
     }
 
     private void UpdateAuthMenu()
@@ -235,13 +218,22 @@ public partial class AccountInfoViewModel : ViewModelBase
             AuthViewSpan = 1;
     }
 
-    private void AddAccount(AuthTokenCredentials credentials)
+    private void AddAccount(ProfileAuthCredentials credentials)
     {
-        var onDelete = new DelegateCommand<ProfileAuthCredentials>(OnDeleteProfile);
-        var onSelect = new DelegateCommand<ProfileAuthCredentials>(AuthByProfile);
+        var onDelete = new DelegateCommand<ProfileEntry>(OnDeleteProfile);
+        var onSelect = new DelegateCommand<ProfileEntry>((p) =>
+        {
+            CurrentLogin = p.Credentials.Login;
+            CurrentPassword = p.Credentials.Password;
+            CurrentAuthServer = p.Credentials.AuthServer;
+            DoAuth();
+        });
+        
+        var serverName = GetServerAuthName(credentials.AuthServer);
 
-        var alpm = new ProfileAuthCredentials(
+        var alpm = new ProfileEntry(
             credentials,
+            serverName, 
             onSelect,
             onDelete);
 
@@ -251,66 +243,100 @@ public partial class AccountInfoViewModel : ViewModelBase
         Accounts.Add(alpm);
     }
 
-    private void ReadAuthConfig()
+    private async Task ReadAuthConfig()
     {
         var message = ViewHelperService.GetViewModel<InfoPopupViewModel>();
-        message.InfoText = LocalisationService.GetString("auth-config-read");
+        message.InfoText = LocalizationService.GetString("auth-config-read");
         message.IsInfoClosable = false;
         PopupMessageService.Popup(message);
-        foreach (var profile in
-                 ConfigurationService.GetConfigValue(LauncherConVar.AuthProfiles)!)
-            AddAccount(profile);
-
-        if (Accounts.Count == 0) UpdateAuthMenu();
-
+        
+        _logger.Log("Reading auth config");
+        
         AuthUrls.Clear();
         var authUrls = ConfigurationService.GetConfigValue(LauncherConVar.AuthServers)!;
         foreach (var url in authUrls) AuthUrls.Add(url);
         if(authUrls.Length > 0) AuthItemSelect = authUrls[0];
-        message.Dispose();
+        
+        var profileCandidates = new List<string>();
 
-        DoCurrentAuth();
-    }
-
-    public async void DoCurrentAuth()
-    {
-        var message = ViewHelperService.GetViewModel<InfoPopupViewModel>();
-        message.InfoText = LocalisationService.GetString("auth-try-auth-config");
-        message.IsInfoClosable = false;
-        PopupMessageService.Popup(message);
-
-        var currProfile = ConfigurationService.GetConfigValue(LauncherConVar.AuthCurrent);
-
-        if (currProfile != null)
+        foreach (var profileRaw in
+                 ConfigurationService.GetConfigValue(LauncherConVar.AuthProfiles)!)
         {
+            _logger.Log($"Decrypting profile...");
             try
             {
-                await CatchAuthError(async () => await TryAuth(currProfile), () => message.Dispose());
+                var decoded =
+                    await CryptographicStore.Decrypt<ProfileAuthCredentials>(profileRaw,
+                        CryptographicStore.GetComputerKey());
+            
+                _logger.Log($"Decrypted profile: {decoded.Login}");
+            
+                profileCandidates.Add(profileRaw);
+                AddAccount(decoded);
             }
-            catch (Exception ex)
+            catch (Exception e)
             {
-                var unexpectedError = new Exception(LocalisationService.GetString("auth-error"), ex);
-                _logger.Error(unexpectedError);
-                PopupMessageService.Popup(unexpectedError);
-                return;
+                _logger.Error("Error while decrypting profile");
+                _logger.Error(e);
             }
         }
+        
+        ConfigurationService.SetConfigValue(LauncherConVar.AuthProfiles, profileCandidates.ToArray());
 
+        if (Accounts.Count == 0) UpdateAuthMenu();
+        
         message.Dispose();
     }
 
-    [RelayCommand]
-    private void OnSaveProfile()
+    public void DoCurrentAuth()
     {
-        if(Credentials is null) return;
+        DoAuth();
+    }
+
+    private async Task<AuthTokenCredentials?> CheckOrRenewToken(AuthTokenCredentials? authTokenCredentials)
+    {
+        if(authTokenCredentials is null) 
+            return null;
+
+        var daysLeft = (int)(authTokenCredentials.Token.ExpireTime - DateTime.Now).TotalDays;
         
-        AddAccount(Credentials);
+        if(daysLeft >= 4)
+        {
+            _logger.Log("Token " + authTokenCredentials.Login + " is active, "+daysLeft+" days left, undo renewing!");
+            return authTokenCredentials;
+        }
+
+        try
+        {
+            _logger.Log($"Renewing token for {authTokenCredentials.Login}");
+            return await ExceptionHelper.TryRun(() => AuthService.Refresh(authTokenCredentials), 3,
+                (attempt, e) => { _logger.Error(new Exception("Error while renewing, attempts: " + attempt, e)); });
+        }
+        catch (AuthTokenExpiredException e)
+        {
+            _logger.Error(e);
+            return null;
+        }
+        catch (Exception e)
+        {
+            var unexpectedError = new Exception(LocalizationService.GetString("auth-error"), e);
+            _logger.Error(unexpectedError);
+            return authTokenCredentials;
+        }
+    }
+    
+    public void OnSaveProfile()
+    {
+        if(Credentials.Value is null || 
+           string.IsNullOrEmpty(CurrentPassword)) return;
+        
+        AddAccount(new ProfileAuthCredentials(CurrentLogin, CurrentPassword, Credentials.Value.AuthServer));
         _isProfilesEmpty = Accounts.Count == 0;
         UpdateAuthMenu();
         DirtyProfile();
     }
 
-    private void OnDeleteProfile(ProfileAuthCredentials account)
+    private void OnDeleteProfile(ProfileEntry account)
     {
         Accounts.Remove(account);
         _isProfilesEmpty = Accounts.Count == 0;
@@ -320,7 +346,7 @@ public partial class AccountInfoViewModel : ViewModelBase
 
     private void PopupError(string message, Exception e)
     {
-        message = LocalisationService.GetString("auth-error-occured") + message;
+        message = LocalizationService.GetString("auth-error-occured") + message;
         _logger.Error(new Exception(message, e));
 
         var messageView = ViewHelperService.GetViewModel<InfoPopupViewModel>();
@@ -328,15 +354,13 @@ public partial class AccountInfoViewModel : ViewModelBase
         messageView.IsInfoClosable = true;
         PopupMessageService.Popup(messageView);
     }
-
-    [RelayCommand]
-    private void OnExpandAuthUrl()
+    
+    public void OnExpandAuthUrl()
     {
         AuthUrlConfigExpand = !AuthUrlConfigExpand;
     }
-
-    [RelayCommand]
-    private void OnExpandAuthView()
+    
+    public void OnExpandAuthView()
     {
         AuthMenuExpand = !AuthMenuExpand;
         UpdateAuthMenu();
@@ -345,6 +369,79 @@ public partial class AccountInfoViewModel : ViewModelBase
     private void DirtyProfile()
     {
         ConfigurationService.SetConfigValue(LauncherConVar.AuthProfiles,
-            Accounts.Select(a => a.Credentials).ToArray());
+            Accounts.Select(a => CryptographicStore.Encrypt(a.Credentials, CryptographicStore.GetComputerKey())).ToArray());
     }
-}
+    
+    public sealed class AuthTokenCredentialsVar(AccountInfoViewModel accountInfoViewModel)
+        : ComplexConVarBinder<AuthTokenCredentials?>(
+            accountInfoViewModel.ConfigurationService.SubscribeVarChanged(LauncherConVar.AuthCurrent))
+    {
+        protected override async Task<AuthTokenCredentials?> OnValueChange(AuthTokenCredentials? currProfile)
+        {
+            if (currProfile is null)
+            {
+                accountInfoViewModel.IsLogged = false;
+                accountInfoViewModel._logger.Log("clearing credentials");
+                return null;
+            }
+        
+            var message = accountInfoViewModel.ViewHelperService.GetViewModel<InfoPopupViewModel>();
+            message.InfoText = LocalizationService.GetString("auth-try-auth-config");
+            message.IsInfoClosable = false;
+            accountInfoViewModel.PopupMessageService.Popup(message);
+      
+            accountInfoViewModel._logger.Log($"trying auth with {currProfile.Login}");
+
+            var errorRun = false;
+
+            currProfile = await accountInfoViewModel.CheckOrRenewToken(currProfile);
+
+            if (currProfile is null)
+            {
+                message.Dispose();
+                
+                accountInfoViewModel._logger.Log("profile credentials update required!");
+                
+                accountInfoViewModel.PopupMessageService.Popup("profile credentials update required!");
+                
+                accountInfoViewModel.IsLogged = false;
+                return null;
+            }
+            
+            try
+            {
+                await accountInfoViewModel.CatchAuthError(async () =>
+                {
+                    await accountInfoViewModel.AuthService.EnsureToken(currProfile);
+                }, () =>
+                {
+                    message.Dispose();
+                    errorRun = true;
+                });
+                message.Dispose();
+            }
+            catch (Exception ex)
+            {
+                accountInfoViewModel.CurrentLogin = currProfile.Login;
+                accountInfoViewModel.CurrentAuthServer = currProfile.AuthServer;
+                var unexpectedError = new Exception(LocalizationService.GetString("auth-error"), ex);
+                accountInfoViewModel._logger.Error(unexpectedError);
+                accountInfoViewModel.PopupMessageService.Popup(unexpectedError);
+                errorRun = true;
+            }
+
+            if (errorRun)
+            {
+                accountInfoViewModel.IsLogged = false;
+                return null;
+            }
+        
+            accountInfoViewModel.IsLogged = true;
+
+            accountInfoViewModel.AuthServerName = accountInfoViewModel.GetServerAuthName(currProfile.AuthServer);
+            
+            return currProfile;
+        }
+    }
+}
+

Nebula.Launcher/ViewModels/Pages/ConfigurationViewModel.cs

@@ -1,20 +1,14 @@
 using System;
-using System.Collections;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
-using System.Globalization;
 using System.IO;
 using System.IO.Compression;
-using System.Linq;
-using System.Reflection;
 using System.Threading.Tasks;
-using Avalonia;
-using Avalonia.Controls;
-using Avalonia.Layout;
 using Nebula.Launcher.Services;
 using Nebula.Launcher.ViewModels.Popup;
 using Nebula.Launcher.Views.Pages;
 using Nebula.Shared;
+using Nebula.Shared.Configurations;
 using Nebula.Shared.Services;
 using Nebula.Shared.ViewHelper;
 
@@ -95,7 +89,7 @@ public partial class ConfigurationViewModel : ViewModelBase
             using var loader = ViewHelperService.GetViewModel<LoadingContextViewModel>();
             loader.LoadingName = "Removing content";
             PopupService.Popup(loader);
-            ContentService.RemoveAllContent(loader, CancellationService.Token);
+            ContentService.RemoveAllContent(loader.CreateLoadingContext(), CancellationService.Token);
         });
     }
 
@@ -118,288 +112,4 @@ public partial class ConfigurationViewModel : ViewModelBase
     {
         InitConfiguration();
     }
-}
-
-public static class ConfigControlHelper{
-    public static IConfigControl GetConfigControl(string name,object value)
-    {
-        switch (value)
-        {
-            case string stringValue:
-                return new StringUnitConfigControl(name, stringValue);
-            case int intValue:
-                return new IntUnitConfigControl(name, intValue);
-            case float floatValue:
-                return new FloatUnitConfigControl(name, floatValue);
-        }
-        
-        var valueType = value.GetType();
-
-        if (valueType.IsArray)
-            return new ArrayUnitConfigControl(name, value);
-        
-        return new ComplexUnitConfigControl(name, value);
-    }
-
-    public static object? CreateDefaultValue(Type type)
-    {
-        if(type.IsValueType)
-            return Activator.CreateInstance(type);
-        
-        var ctor = type.GetConstructors().First();
-        var parameters = ctor.GetParameters()
-            .Select(p => CreateDefaultValue(p.ParameterType))
-            .ToArray();
-        
-        return ctor.Invoke(parameters);
-    }
-}
-
-public sealed class ComplexUnitConfigControl : Border, IConfigControl
-{
-    private readonly List<(PropertyInfo, IConfigControl)> _units = [];
-    
-    private Type _objectType = typeof(object);
-
-    private readonly StackPanel _panel = new();
-    
-    public string ConfigName { get; }
-    public bool Dirty => _units.Any(dirty => dirty.Item2.Dirty);
-
-    public ComplexUnitConfigControl(string name, object obj)
-    {
-        Classes.Add("ConfigBorder");
-        _panel.Orientation = Orientation.Vertical;
-        _panel.Spacing = 4f;
-        ConfigName = name;
-        Child = _panel;
-        SetValue(obj);
-    }
-
-    public void SetValue(object value)
-    {
-        _units.Clear();
-        _panel.Children.Clear();
-        _objectType = value.GetType();
-        
-        _panel.Children.Add(new Label()
-        {
-            Content = ConfigName
-        });
-        
-        foreach (var propInfo in _objectType.GetProperties())
-        {
-            if(propInfo.PropertyType.IsInterface) 
-                continue;
-            
-            var propValue = propInfo.GetValue(value);
-
-            var control = ConfigControlHelper.GetConfigControl(propInfo.Name, propValue!);
-            
-            ((Control)control).Margin = new Thickness(5);
-            _panel.Children.Add((Control)control);
-            _units.Add((propInfo,control));
-        }
-    }
-
-    public object GetValue()
-    {
-        var obj = ConfigControlHelper.CreateDefaultValue(_objectType);
-        foreach (var (fieldInfo, configControl) in _units)
-        {
-            fieldInfo.SetValue(obj, configControl.GetValue());
-        }
-
-        return obj!;
-    }
-}
-
-public sealed class ArrayUnitConfigControl : Border, IConfigControl
-{
-    private readonly List<IConfigControl> _itemControls = [];
-    private readonly StackPanel _itemsPanel = new StackPanel() { Orientation = Orientation.Vertical };
-    private readonly Button _addButton = new Button() { Content = new Label()
-    {
-        Content = "Add Item"
-    }, Classes = { "ConfigBorder" }};
-    private readonly int _oldCount;
-    private readonly Type _elementType;
-    private readonly StackPanel _panel = new();
-
-    public string ConfigName { get; }
-    public bool Dirty => _itemControls.Any(dirty => dirty.Dirty) || _itemControls.Count != _oldCount;
-
-    public ArrayUnitConfigControl(string name, object value)
-    {
-        Classes.Add("ConfigBorder");
-        _elementType = value.GetType().GetElementType()!;
-        
-        ConfigName = name;
-        _panel.Orientation = Orientation.Vertical;
-        _panel.Spacing = 4f;
-        _itemsPanel.Spacing = 4f;
-
-        _panel.Children.Add(new Label { Content = name });
-        _panel.Children.Add(_itemsPanel);
-        _panel.Children.Add(_addButton);
-
-        _addButton.Click += (_, _) => AddItem(ConfigControlHelper.CreateDefaultValue(_elementType)!);
-        Child = _panel; 
-        SetValue(value);
-        _oldCount = _itemControls.Count;
-    }
-
-    private void AddItem(object value)
-    {
-        var itemPanel = new StackPanel { Orientation = Orientation.Horizontal, Spacing = 2 };
-        var control = ConfigControlHelper.GetConfigControl(_itemControls.Count.ToString(), value);
-        var removeButton = new Button { Content = new Label(){ Content = "Remove" }, Classes = { "ConfigBorder" }};
-
-        removeButton.Click += (_, _) =>
-        {
-            _itemControls.Remove(control);
-            _itemsPanel.Children.Remove(itemPanel);
-        };
-        
-        ((Control)control).Margin = new Thickness(5);
-        itemPanel.Children.Add((Control)control);
-        itemPanel.Children.Add(removeButton);
-
-        _itemsPanel.Children.Add(itemPanel);
-        _itemControls.Add(control);
-    }
-
-    public void SetValue(object value)
-    {
-        _itemControls.Clear();
-        _itemsPanel.Children.Clear();
-
-        if (value is IEnumerable list)
-        {
-            foreach (var item in list)
-            {
-                AddItem(item);
-            }
-        }
-    }
-
-    public object GetValue()
-    {
-        return ConvertArray(_itemControls.Select(c => c.GetValue()).ToArray(), _elementType);
-    }
-    
-    public static Array ConvertArray(Array sourceArray, Type targetType)
-    {
-        int length = sourceArray.Length;
-        var newArray = Array.CreateInstance(targetType, length);
-
-        for (int i = 0; i < length; i++)
-        {
-            var value = sourceArray.GetValue(i);
-            var converted = Convert.ChangeType(value, targetType);
-            newArray.SetValue(converted, i);
-        }
-
-        return newArray;
-    }
-}
-
-public abstract class UnitConfigControl<T> : Border, IConfigControl where T : notnull
-{
-    private readonly Label _nameLabel = new();
-    private readonly TextBox _valueLabel = new();
-    private string _originalValue;
-
-    private StackPanel _panel = new();
-    
-    public string ConfigName { get; }
-   
-    public bool Dirty => _originalValue != ConfigValue;
-
-    protected string ConfigValue
-    {
-        get => _valueLabel.Text ?? string.Empty;
-        set => _valueLabel.Text = value;
-    }
-
-    public UnitConfigControl(string name, T value)
-    {
-        Classes.Add("ConfigBorder");
-        ConfigName = name;
-        _panel.Orientation = Orientation.Horizontal;
-        _panel.Children.Add(_nameLabel);
-        _panel.Children.Add(_valueLabel);
-        
-        _nameLabel.Content = name;
-        _nameLabel.VerticalAlignment = VerticalAlignment.Center;
-        Child = _panel;
-        
-        SetConfValue(value);
-        _originalValue = ConfigValue;
-    }
-
-    public abstract void SetConfValue(T value);
-
-    public abstract T GetConfValue();
-    
-    public void SetValue(object value)
-    {
-        SetConfValue((T)value);
-    }
-
-    public object GetValue()
-    {
-        return GetConfValue()!;
-    }
-}
-
-public sealed class StringUnitConfigControl(string name, string value) : UnitConfigControl<string>(name, value)
-{
-    public override void SetConfValue(string value)
-    {
-        ConfigValue = value;
-    }
-
-    public override string GetConfValue()
-    {
-        return ConfigValue;
-    }
-}
-
-public sealed class IntUnitConfigControl(string name, int value) : UnitConfigControl<int>(name, value)
-{
-    public override void SetConfValue(int value)
-    {
-        ConfigValue = value.ToString();
-    }
-
-    public override int GetConfValue()
-    {
-        return int.Parse(ConfigValue);
-    }
-}
-
-public sealed class FloatUnitConfigControl(string name, float value) : UnitConfigControl<float>(name, value)
-{
-
-    public CultureInfo CultureInfo = CultureInfo.InvariantCulture;
-
-    public override void SetConfValue(float value)
-    {
-        ConfigValue = value.ToString(CultureInfo);
-    }
-
-    public override float GetConfValue()
-    {
-        return float.Parse(ConfigValue, CultureInfo);
-    }
-}
-
-
-public interface IConfigControl
-{
-    public string ConfigName { get; }
-    public bool Dirty {get;}
-    public abstract void SetValue(object value);
-    public abstract object GetValue();
 }

Nebula.Launcher/ViewModels/Pages/ContentBrowserViewModel.cs

@@ -33,6 +33,7 @@ public sealed partial class ContentBrowserViewModel : ViewModelBase, IContentHol
     [GenerateProperty] private FileService FileService { get; } = default!;
     [GenerateProperty] private PopupMessageService PopupService { get; } = default!;
     [GenerateProperty] private IServiceProvider ServiceProvider { get; }
+    [GenerateProperty] private CancellationService CancellationService { get; set; } = default!;
     [GenerateProperty, DesignConstruct] private ViewHelperService ViewHelperService { get; } = default!;
 
 
@@ -57,7 +58,11 @@ public sealed partial class ContentBrowserViewModel : ViewModelBase, IContentHol
         loading.LoadingName = "Unpacking entry";
         PopupService.Popup(loading);
 
-        Task.Run(() => ContentService.Unpack(serverEntry.FileApi, myTempDir, loading));
+        Task.Run(() =>
+        {
+            ContentService.Unpack(serverEntry.FileApi, myTempDir, loading.CreateLoadingContext());
+            loading.Dispose();
+        });
         ExplorerHelper.OpenFolder(tmpDir);
     }
 
@@ -74,7 +79,7 @@ public sealed partial class ContentBrowserViewModel : ViewModelBase, IContentHol
         {
             var cur = ServiceProvider.GetService<ServerFolderContentEntry>()!;
             cur.Init(this, ServerText.ToRobustUrl());
-            var curContent = cur.Go(new ContentPath(SearchText));
+            var curContent = cur.Go(new ContentPath(SearchText), CancellationService.Token);
             if(curContent == null) 
                 throw new NullReferenceException($"{SearchText} not found in {ServerText}");
             
@@ -144,11 +149,11 @@ public interface IContentEntry
     public string IconPath { get; }
     public ContentPath FullPath => Parent?.FullPath.With(Name) ?? new ContentPath(Name);
     
-    public IContentEntry? Go(ContentPath path);
+    public IContentEntry? Go(ContentPath path, CancellationToken cancellationToken);
     
     public void GoCurrent()
     {
-        var entry = Go(ContentPath.Empty);
+        var entry = Go(ContentPath.Empty, CancellationToken.None);
         if(entry is not null) Holder.CurrentEntry = entry;
     }
     
@@ -178,7 +183,7 @@ public sealed class LazyContentEntry : IContentEntry
         _lazyEntry = entry;
         _lazyEntryInit = lazyEntryInit;
     }
-    public IContentEntry? Go(ContentPath path)
+    public IContentEntry? Go(ContentPath path, CancellationToken cancellationToken)
     {
         _lazyEntryInit?.Invoke();
         return _lazyEntry;
@@ -196,13 +201,13 @@ public sealed class ExtContentExecutor
         _decompilerService = decompilerService;
     }
 
-    public bool TryExecute(RobustManifestItem manifestItem)
+    public bool TryExecute(RobustManifestItem manifestItem, CancellationToken cancellationToken)
     {
         var ext = Path.GetExtension(manifestItem.Path);
 
         if (ext == ".dll")
         {
-            _decompilerService.OpenServerDecompiler(_root.ServerUrl);
+            _decompilerService.OpenServerDecompiler(_root.ServerUrl, cancellationToken);
             return true;
         }
 
@@ -231,9 +236,9 @@ public sealed partial class ManifestContentEntry : IContentEntry
         _extContentExecutor = executor;
     }
     
-    public IContentEntry? Go(ContentPath path)
+    public IContentEntry? Go(ContentPath path, CancellationToken cancellationToken)
     {
-        if (_extContentExecutor.TryExecute(_manifestItem)) 
+        if (_extContentExecutor.TryExecute(_manifestItem, cancellationToken)) 
             return null;
         
         var ext = Path.GetExtension(_manifestItem.Path);
@@ -319,7 +324,7 @@ public sealed partial class ServerFolderContentEntry : BaseFolderContentEntry
             {
                 CreateContent(new ContentPath(path), item);
             }
-
+            
             IsLoading = false;
             loading.Dispose();
         });
@@ -416,15 +421,28 @@ public abstract class BaseFolderContentEntry : ViewModelBase, IContentEntry
     private Dictionary<string, IContentEntry> _childs = [];
 
     public string IconPath => "/Assets/svg/folder.svg";
-    public IContentHolder Holder { get; private set; }
+    
+    private IContentHolder? _holder = null;
+    public IContentHolder Holder
+    {
+        get
+        {
+            if(_holder == null) 
+                throw new InvalidOperationException(
+                    GetType().Name + " was not initialised! Call Init(IContentHolder holder, string? name = null) before using it.");
+            
+            return _holder;
+        }
+    }
+
     public IContentEntry? Parent { get; set; }
     public string? Name { get; private set; }
     
-    public IContentEntry? Go(ContentPath path)
+    public IContentEntry? Go(ContentPath path, CancellationToken cancellationToken)
     {
         if (path.IsEmpty()) return this;
         if (_childs.TryGetValue(path.GetNext(), out var child)) 
-            return child.Go(path);
+            return child.Go(path, cancellationToken);
         
         return null;
     }
@@ -432,7 +450,7 @@ public abstract class BaseFolderContentEntry : ViewModelBase, IContentEntry
     public void Init(IContentHolder holder, string? name = null)
     {
         Name = name;
-        Holder = holder;
+        _holder = holder;
     }
 
     public T AddChild<T>(T child) where T: IContentEntry

Nebula.Launcher/ViewModels/Pages/ServerOverviewModel.cs

@@ -66,7 +66,7 @@ public partial class ServerOverviewModel : ViewModelBase
             tempItems.Add(new ServerListTabTemplate(ServiceProvider.GetService<HubServerListProvider>()!.With(record.MainUrl), record.Name));
         }
         
-        tempItems.Add(new ServerListTabTemplate(FavoriteServerListProvider, "Favorite"));
+        tempItems.Add(new ServerListTabTemplate(FavoriteServerListProvider, LocalizationService.GetString("tab-favorite")));
         
         Items = new ObservableCollection<ServerListTabTemplate>(tempItems);
         

Nebula.Launcher/ViewModels/Popup/AddFavoriteViewModel.cs

@@ -32,7 +32,7 @@ public partial class AddFavoriteViewModel : PopupViewModelBase
     [GenerateProperty] private ServerOverviewModel ServerOverviewModel { get; }
     [GenerateProperty] private DebugService DebugService { get; }
     [GenerateProperty] private FavoriteServerListProvider FavoriteServerListProvider { get; }
-    public override string Title => LocalisationService.GetString("popup-add-favorite");
+    public override string Title => LocalizationService.GetString("popup-add-favorite");
     public override bool IsClosable => true;
 
     [ObservableProperty] private string _ipInput;
@@ -43,7 +43,7 @@ public partial class AddFavoriteViewModel : PopupViewModelBase
         try
         {
             if(string.IsNullOrWhiteSpace(IpInput))
-                throw new Exception(LocalisationService.GetString("popup-add-favorite-invalid-ip"));
+                throw new Exception(LocalizationService.GetString("popup-add-favorite-invalid-ip"));
             
             var uri = IpInput.ToRobustUrl();
             FavoriteServerListProvider.AddFavorite(uri);

Nebula.Launcher/ViewModels/Popup/EditServerNameViewModel.cs

@@ -12,7 +12,7 @@ public sealed partial class EditServerNameViewModel : PopupViewModelBase
 {
     [GenerateProperty] public override PopupMessageService PopupMessageService { get; }
     [GenerateProperty] public ConfigurationService ConfigurationService { get; }
-    public override string Title => LocalisationService.GetString("popup-edit-name");
+    public override string Title => LocalizationService.GetString("popup-edit-name");
     public override bool IsClosable => true;
     
     [ObservableProperty] private string _ipInput;

Nebula.Launcher/ViewModels/Popup/ExceptionListViewModel.cs

@@ -12,7 +12,7 @@ namespace Nebula.Launcher.ViewModels.Popup;
 public sealed partial class ExceptionListViewModel : PopupViewModelBase
 {
     [GenerateProperty] public override PopupMessageService PopupMessageService { get; }
-    public override string Title => LocalisationService.GetString("popup-exception");
+    public override string Title => LocalizationService.GetString("popup-exception");
     public override bool IsClosable => true;
 
     public ObservableCollection<Exception> Errors { get; } = new();

Nebula.Launcher/ViewModels/Popup/InfoPopupViewModel.cs

@@ -14,7 +14,7 @@ public partial class InfoPopupViewModel : PopupViewModelBase
 
     [ObservableProperty] private string _infoText = "Test";
 
-    public override string Title => LocalisationService.GetString("popup-information");
+    public override string Title => LocalizationService.GetString("popup-information");
     public bool IsInfoClosable { get; set; } = true;
     public override bool IsClosable => IsInfoClosable;
 

Nebula.Launcher/ViewModels/Popup/IsLoginCredentialsNullPopup.cs

@@ -45,6 +45,6 @@ public partial class IsLoginCredentialsNullPopupViewModel : PopupViewModelBase
         Dispose();
     }
     
-    public override string Title => LocalisationService.GetString("popup-login-credentials-warning");
+    public override string Title => LocalizationService.GetString("popup-login-credentials-warning");
     public override bool IsClosable => true;
 }

Nebula.Launcher/ViewModels/Popup/LoadingContextViewModel.cs

@@ -1,3 +1,5 @@
+using System;
+using System.Collections.ObjectModel;
 using CommunityToolkit.Mvvm.ComponentModel;
 using Nebula.Launcher.Services;
 using Nebula.Launcher.Views.Popup;
@@ -9,82 +11,121 @@ namespace Nebula.Launcher.ViewModels.Popup;
 
 [ViewModelRegister(typeof(LoadingContextView), false)]
 [ConstructGenerator]
-public sealed partial class LoadingContextViewModel : PopupViewModelBase, ILoadingHandler
+public sealed partial class LoadingContextViewModel : PopupViewModelBase, ILoadingHandlerFactory, IConnectionSpeedHandler
 {
+    public ObservableCollection<LoadingContext> LoadingContexts { get;  } = [];
+    public ObservableCollection<double> Values { get; } = [];
+    [ObservableProperty] private string _speedText = "";
+    [ObservableProperty] private bool _showSpeed;
+    [ObservableProperty] private int _loadingColumnSize = 2;
     [GenerateProperty] public override PopupMessageService PopupMessageService { get; }
     [GenerateProperty] public CancellationService CancellationService { get; }
-    
-    [ObservableProperty] private int _currJobs;
-    [ObservableProperty] private int _resolvedJobs;
-    [ObservableProperty] private string _message = string.Empty;
 
-    public string LoadingName { get; set; } = LocalisationService.GetString("popup-loading");
+    public string LoadingName { get; set; } = LocalizationService.GetString("popup-loading");
     public bool IsCancellable { get; set; } = true;
     public override bool IsClosable => false;
 
-    public override string Title => LoadingName;
+    public override string Title => LocalizationService.GetString("popup-loading");
 
-    public void SetJobsCount(int count)
+    public void Cancel()
     {
-        CurrJobs = count;
-    }
-
-    public int GetJobsCount()
-    {
-        return CurrJobs;
-    }
-
-    public void SetResolvedJobsCount(int count)
-    {
-        ResolvedJobs = count;
-    }
-
-    public int GetResolvedJobsCount()
-    {
-        return ResolvedJobs;
-    }
-
-    public void SetLoadingMessage(string message)
-    {
-        Message = message + "\n" + Message;
-    }
-
-    public void Cancel(){
-        if(!IsCancellable) return;
+        if (!IsCancellable) return;
         CancellationService.Cancel();
         Dispose();
     }
 
+    public void PasteSpeed(int speed)
+    {
+        if (Values.Count == 0)
+        {
+            ShowSpeed = true;
+            LoadingColumnSize = 1;
+        }
+        SpeedText = FileLoadingFormater.FormatBytes(speed) + " / s";
+        Values.Add(speed);
+        if(Values.Count > 10) Values.RemoveAt(0);
+    }
+
+    public ILoadingHandler CreateLoadingContext(ILoadingFormater? loadingFormater = null)
+    {
+        var instance = new LoadingContext(this, loadingFormater ?? DefaultLoadingFormater.Instance);
+        LoadingContexts.Add(instance);
+        return instance;
+    }
+
+    public void RemoveContextInstance(LoadingContext loadingContext)
+    {
+        LoadingContexts.Remove(loadingContext);
+    }
+
     protected override void Initialise()
     {
     }
 
     protected override void InitialiseInDesignMode()
     {
-        SetJobsCount(5);
-        SetResolvedJobsCount(2);
-        string[] debugMessages = {
-            "Debug: Starting phase 1...",
-            "Debug: Loading assets...",
-            "Debug: Connecting to server...",
-            "Debug: Fetching user data...",
-            "Debug: Applying configurations...",
-            "Debug: Starting phase 2...",
-            "Debug: Rendering UI...",
-            "Debug: Preparing scene...",
-            "Debug: Initializing components...",
-            "Debug: Running diagnostics...",
-            "Debug: Checking dependencies...",
-            "Debug: Verifying files...",
-            "Debug: Cleaning up cache...",
-            "Debug: Finalizing setup...",
-            "Debug: Setup complete.",
-            "Debug: Ready for launch."
-        };
+        var context = CreateLoadingContext();
+        context.SetJobsCount(5);
+        context.SetResolvedJobsCount(2);
+        context.SetLoadingMessage("message");
 
-        foreach (string message in debugMessages)
+        var ctx1 = CreateLoadingContext(new FileLoadingFormater());
+        ctx1.SetJobsCount(1020120);
+        ctx1.SetResolvedJobsCount(12331);
+        ctx1.SetLoadingMessage("File data");
+        
+        for (var i = 0; i < 14; i++)
         {
-            SetLoadingMessage(message);
+            PasteSpeed(Random.Shared.Next(10000000));
         }
     }
-}
+}
+
+public sealed partial class LoadingContext : ObservableObject, ILoadingHandler
+{
+    private readonly LoadingContextViewModel _master;
+    private readonly ILoadingFormater _loadingFormater;
+    public string LoadingText => _loadingFormater.Format(this);
+    
+    [ObservableProperty] private string _message = string.Empty;
+    [ObservableProperty] private long _currJobs;
+    [ObservableProperty] private long _resolvedJobs;
+
+    public LoadingContext(LoadingContextViewModel master, ILoadingFormater loadingFormater)
+    {
+        _master = master;
+        _loadingFormater = loadingFormater;
+    }
+
+    public void SetJobsCount(long count)
+    {
+        CurrJobs = count;
+        OnPropertyChanged(nameof(LoadingText));
+    }
+
+    public long GetJobsCount()
+    {
+        return CurrJobs;
+    }
+
+    public void SetResolvedJobsCount(long count)
+    {
+        ResolvedJobs = count;
+        OnPropertyChanged(nameof(LoadingText));
+    }
+
+    public long GetResolvedJobsCount()
+    {
+        return ResolvedJobs;
+    }
+
+    public void SetLoadingMessage(string message)
+    {
+        Message = message;
+    }
+
+    public void Dispose()
+    {
+        _master.RemoveContextInstance(this);
+    }
+}

Nebula.Launcher/ViewModels/Popup/PopupViewModelBase.cs

@@ -12,6 +12,9 @@ public abstract class PopupViewModelBase : ViewModelBase, IDisposable
 
     public void Dispose()
     {
+        OnDispose();
         PopupMessageService.ClosePopup(this);
     }
+
+    protected virtual void OnDispose(){}
 }

Nebula.Launcher/ViewModels/Popup/TfaViewModel.cs

@@ -1,5 +1,6 @@
 using System;
 using Nebula.Launcher.Services;
+using Nebula.Launcher.ViewModels.Pages;
 using Nebula.Launcher.Views.Popup;
 using Nebula.Shared.Services;
 using Nebula.Shared.ViewHelper;
@@ -9,7 +10,10 @@ namespace Nebula.Launcher.ViewModels.Popup;
 [ConstructGenerator, ViewModelRegister(typeof(TfaView))]
 public partial class TfaViewModel : PopupViewModelBase
 {
-    public Action<string>? OnTfaEntered;
+    [GenerateProperty] public override PopupMessageService PopupMessageService { get; }
+    [GenerateProperty] public AccountInfoViewModel AccountInfo { get; }
+    public override string Title => LocalizationService.GetString("popup-twofa");
+    public override bool IsClosable => true;
     
     protected override void InitialiseInDesignMode()
     {
@@ -21,11 +25,7 @@ public partial class TfaViewModel : PopupViewModelBase
 
     public void OnTfaEnter(string code)
     {
-        OnTfaEntered?.Invoke(code);
+        AccountInfo.DoAuth(code);
         Dispose();
     }
-
-    [GenerateProperty] public override PopupMessageService PopupMessageService { get; }
-    public override string Title => LocalisationService.GetString("popup-twofa");
-    public override bool IsClosable => true;
 }

Nebula.Launcher/ViewModels/ServerEntryModelView.cs

@@ -174,7 +174,8 @@ public partial class ServerEntryModelView : ViewModelBase, IFilterConsumer, ILis
 
     private async Task RunInstanceAsync(bool ignoreLoginCredentials = false)
     {
-        if (!ignoreLoginCredentials && AccountInfoViewModel.Credentials is null)
+        _logger.Log("Running instance..." + RealName);
+        if (!ignoreLoginCredentials && AccountInfoViewModel.Credentials.Value is null)
         {
             var warningContext = ViewHelperService.GetViewModel<IsLoginCredentialsNullPopupViewModel>()
                 .WithServerEntry(this);
@@ -182,20 +183,30 @@ public partial class ServerEntryModelView : ViewModelBase, IFilterConsumer, ILis
             PopupMessageService.Popup(warningContext);
             return;
         }
-        
-        using var loadingContext = ViewHelperService.GetViewModel<LoadingContextViewModel>();
-        loadingContext.LoadingName = "Loading instance...";
-        ((ILoadingHandler)loadingContext).AppendJob();
 
-        PopupMessageService.Popup(loadingContext);
-        _currentInstance = 
-            await GameRunnerPreparer.GetGameProcessStartInfoProvider(Address, loadingContext, CancellationService.Token);
-            
-        _currentInstance.RegisterLogger(_currentContentLogConsumer);
-        _currentInstance.RegisterLogger(new DebugLoggerBridge(DebugService.GetLogger($"PROCESS_{Random.Shared.Next(65535)}")));
-        _currentInstance.OnProcessExited += OnProcessExited;
-        RunVisible = false;
-        _currentInstance.Start();
+        try
+        {
+            using var viewModelLoading = ViewHelperService.GetViewModel<LoadingContextViewModel>();
+            viewModelLoading.LoadingName = "Loading instance...";
+
+            PopupMessageService.Popup(viewModelLoading);
+            _currentInstance = 
+                await GameRunnerPreparer.GetGameProcessStartInfoProvider(Address, viewModelLoading, CancellationService.Token);
+            _logger.Log("Preparing instance...");
+            _currentInstance.RegisterLogger(_currentContentLogConsumer);
+            _currentInstance.RegisterLogger(new DebugLoggerBridge(DebugService.GetLogger($"PROCESS_{Random.Shared.Next(65535)}")));
+            _currentInstance.OnProcessExited += OnProcessExited;
+            RunVisible = false;
+            _currentInstance.Start();
+            _logger.Log("Starting instance..." + RealName);
+        }
+        catch (Exception e)
+        {
+            var error = new Exception("Error while attempt run instance", e);
+            _logger.Error(error);
+            PopupMessageService.Popup(error);
+            RunVisible = true;
+        }
     }
 
     private void OnProcessExited(ProcessRunHandler<GameProcessStartInfoProvider> obj)

Nebula.Launcher/ViewModels/VisualErrorViewModel.cs

@@ -0,0 +1,22 @@
+using CommunityToolkit.Mvvm.ComponentModel;
+using Nebula.Launcher.Views;
+using Nebula.Shared.ViewHelper;
+
+namespace Nebula.Launcher.ViewModels;
+
+
+[ViewModelRegister(typeof(VisualErrorView))]
+public partial class VisualErrorViewModel : ViewModelBase
+{
+    [ObservableProperty] private string _imgPath = "cinka";
+    [ObservableProperty] private string _title = "Error";
+    [ObservableProperty] private string _description = "This is an error.";
+    
+    protected override void InitialiseInDesignMode()
+    {
+    }
+
+    protected override void Initialise()
+    {
+    }
+}

Nebula.Launcher/Views/MainView.axaml

@@ -133,8 +133,9 @@
                                         Path="/Assets/svg/user.svg"
                                         Width="10" />
                                     <Panel>
-                                        <TextBlock Foreground="#777777" IsVisible="{Binding IsLoggedIn}" Text="{Binding LoginText}"/>
-                                        <TextBlock Foreground="#777777" IsVisible="{Binding !IsLoggedIn}" Text="{services:LocaledText auth-current-login-no-name}"/>
+                                        <TextBlock 
+                                            Foreground="#777777" 
+                                            Text="{Binding LoginText}"/>
                                     </Panel>
                                 </StackPanel>
                             </Button>

Nebula.Launcher/Views/MainWindow.axaml

@@ -3,9 +3,9 @@
     ExtendClientAreaChromeHints="NoChrome"
     ExtendClientAreaTitleBarHeightHint="-1"
     ExtendClientAreaToDecorationsHint="True"
-    Height="500"
+    Height="550"
     Icon="/Assets/nebula.ico"
-    MinHeight="500"
+    MinHeight="550"
     MinWidth="800"
     SystemDecorations="BorderOnly"
     Title="Nebula.Launcher"

Nebula.Launcher/Views/Pages/AccountInfoView.axaml

@@ -1,6 +1,6 @@
 <UserControl
     d:DesignHeight="450"
-    d:DesignWidth="800"
+    d:DesignWidth="1000"
     mc:Ignorable="d"
     x:Class="Nebula.Launcher.Views.Pages.AccountInfoView"
     x:DataType="pages:AccountInfoViewModel"
@@ -10,7 +10,8 @@
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     xmlns:pages="clr-namespace:Nebula.Launcher.ViewModels.Pages"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-    xmlns:auth="clr-namespace:Nebula.Launcher.Models.Auth">
+    xmlns:auth="clr-namespace:Nebula.Launcher.Models.Auth"
+    xmlns:converters="clr-namespace:Nebula.Launcher.Converters">
     <Design.DataContext>
         <pages:AccountInfoViewModel />
     </Design.DataContext>
@@ -38,40 +39,58 @@
                     ItemsSource="{Binding Accounts}"
                     Padding="0">
                     <ItemsControl.ItemTemplate>
-                        <DataTemplate DataType="{x:Type auth:ProfileAuthCredentials}">
-                            <Border
-                                BoxShadow="0 1 15 -2 #121212"
-                                CornerRadius="0,10,0,10"
-                                Margin="5,5,5,0"
-                                VerticalAlignment="Center">
-                                <Border.Background>
-                                    <LinearGradientBrush EndPoint="50%,100%" StartPoint="50%,0%">
-                                        <GradientStop Color="#292222" Offset="0.0" />
-                                        <GradientStop Color="#222222" Offset="1.0" />
-                                    </LinearGradientBrush>
-                                </Border.Background>
-                                <Panel>
-                                    <StackPanel Margin="10,5,5,5" Orientation="Horizontal">
+                        <DataTemplate DataType="{x:Type auth:ProfileEntry}">
+                            <Grid ColumnDefinitions="4*,*">
+                                <Border 
+                                    BoxShadow="0 1 15 -2 #121212"
+                                    CornerRadius="0,10,0,10"
+                                    Margin="5,5,5,0">
+                                    <Border.Background>
+                                        <LinearGradientBrush EndPoint="100%,50%" StartPoint="20%,50%">
+                                            <GradientStop Color="{Binding Credentials.AuthServer, 
+                                            Converter={x:Static converters:TypeConverters.NameColorRepresentation}}" Offset="0.0" />
+                                            <GradientStop Color="#222222" Offset="1.0" />
+                                        </LinearGradientBrush>
+                                    </Border.Background>
+                                    <Label>
+                                        <TextBlock Text="{Binding AuthName}" Margin="5"/>
+                                    </Label>
+                                </Border>
+                                <Border Grid.Column="0"
+                                    CornerRadius="0,10,0,10"
+                                    Margin="5,5,5,0">
+                                    <Border.Background>
+                                        <LinearGradientBrush EndPoint="100%,50%" StartPoint="20%,50%">
+                                            <GradientStop Color="#aa222222" Offset="0.0" />
+                                            <GradientStop Color="#222222" Offset="0.4" />
+                                        </LinearGradientBrush>
+                                    </Border.Background>
+                                    <Button 
+                                        HorizontalAlignment="Stretch" 
+                                        Command="{Binding OnSelect}">
                                         <Label>
-                                            <TextBlock Text="{Binding Credentials.Login}" />
+                                            <TextBlock Text="{Binding Credentials.Login}" HorizontalAlignment="Right" VerticalAlignment="Center" Margin="0,0,5,0"/>
                                         </Label>
-                                    </StackPanel>
-                                    <StackPanel HorizontalAlignment="Right" Orientation="Horizontal">
-                                        <Button
-                                            Command="{Binding OnSelect}"
-                                            CornerRadius="0,0,0,10"
-                                            Padding="5">
-                                            <customControls:LocalizedLabel LocalId="account-profile-select"/>
-                                        </Button>
-                                        <Button
-                                            Command="{Binding OnDelete}"
-                                            CornerRadius="0,10,0,0"
-                                            Padding="5">
-                                            <customControls:LocalizedLabel LocalId="account-profile-delete"/>
-                                        </Button>
-                                    </StackPanel>
-                                </Panel>
-                            </Border>
+                                    </Button>
+                                </Border>
+                                <Border 
+                                    BoxShadow="0 1 15 -2 #121212"
+                                    CornerRadius="0,10,0,10"
+                                    Margin="0,5,5,0" Grid.Column="1" Padding="0">
+                                    <Border.Background>
+                                        <LinearGradientBrush EndPoint="100%,50%" StartPoint="20%,50%">
+                                            <GradientStop Color="#292222" Offset="1.0" />
+                                            <GradientStop Color="#222222" Offset="1.0" />
+                                        </LinearGradientBrush>
+                                    </Border.Background>
+                                    <Button Command="{Binding OnDelete}" CornerRadius="0,10,0,10" HorizontalAlignment="Stretch">
+                                        <Svg
+                                            Height="15"
+                                            Path="/Assets/svg/delete.svg"
+                                            Width="15" />
+                                    </Button>
+                                </Border>
+                            </Grid>
                         </DataTemplate>
                     </ItemsControl.ItemTemplate>
                 </ItemsControl>
@@ -121,7 +140,7 @@
                             </StackPanel>
                             <StackPanel Orientation="Horizontal">
                                 <customControls:LocalizedLabel VerticalAlignment="Center" LocalId="account-auth-server"/>
-                                <Button Command="{Binding ExpandAuthUrlCommand}" VerticalAlignment="Stretch">
+                                <Button Command="{Binding OnExpandAuthUrl}" VerticalAlignment="Stretch">
                                     <Label>+</Label>
                                 </Button>
                             </StackPanel>
@@ -156,7 +175,7 @@
                                 <customControls:LocalizedLabel LocalId="account-auth-button"/>
                             </Button>
                         </Border>
-                        <Button Command="{Binding ExpandAuthViewCommand}" HorizontalAlignment="Right">
+                        <Button Command="{Binding OnExpandAuthView}" HorizontalAlignment="Right">
                             <Label>
                                 >
                             </Label>
@@ -169,9 +188,15 @@
                             Margin="0,0,0,20"
                             Path="/Assets/svg/user.svg" />
                         <Label>
-                            <StackPanel HorizontalAlignment="Center" Orientation="Horizontal">
-                                <customControls:LocalizedLabel LocalId="account-auth-hello"/>
-                                <TextBlock Text="{Binding CurrentLogin}" />
+                            <StackPanel Spacing="15">
+                                <StackPanel HorizontalAlignment="Center" Orientation="Horizontal" Spacing="5">
+                                    <customControls:LocalizedLabel LocalId="account-auth-hello"/>
+                                    <TextBlock Text="{Binding Credentials.Value.Login}" />
+                                </StackPanel>
+                                <StackPanel HorizontalAlignment="Center" Orientation="Horizontal" Spacing="5">
+                                    <customControls:LocalizedLabel LocalId="account-auth-current-server"/>
+                                    <TextBlock Text="{Binding AuthServerName}" />
+                                </StackPanel>
                             </StackPanel>
                         </Label>
                         <StackPanel
@@ -184,8 +209,10 @@
                                     <customControls:LocalizedLabel LocalId="account-auth-logout"/>
                                 </Button>
                             </Border>
-                            <Border BoxShadow="{StaticResource DefaultShadow}">
-                                <Button Command="{Binding SaveProfileCommand}">
+                            <Border BoxShadow="{StaticResource DefaultShadow}" 
+                                    IsVisible="{Binding CurrentPassword, 
+                                        Converter={x:Static converters:TypeConverters.StringIsNotEmpty}}">
+                                <Button Command="{Binding OnSaveProfile}">
                                     <customControls:LocalizedLabel LocalId="account-auth-save"/>
                                 </Button>
                             </Border>

Nebula.Launcher/Views/Popup/LoadingContextView.axaml

@@ -10,33 +10,71 @@
     <Design.DataContext>
         <popup:LoadingContextViewModel />
     </Design.DataContext>
-    <StackPanel Margin="25" Spacing="15">
-        <ProgressBar Height="40" Maximum="{Binding CurrJobs}" Value="{Binding ResolvedJobs}" />
-        <Panel>
-            <StackPanel Orientation="Horizontal" Spacing="5" HorizontalAlignment="Left" VerticalAlignment="Center">
-                <Label>
-                    <TextBlock Text="{Binding ResolvedJobs}" />
+    <StackPanel Margin="25" Spacing="15" >
+        <Panel Margin="5">
+            <Border Padding="15" Background="{StaticResource DefaultGrad}" BoxShadow="0 1 1 0 #121212">
+                <Label VerticalAlignment="Center">
+                    <TextBlock Text="{Binding LoadingName}"/>
                 </Label>
-                <Label>
-                    /
-                </Label>
-                <Label>
-                    <TextBlock Text="{Binding CurrJobs}" />
-                </Label>
-            </StackPanel>
-
+            </Border>
             <Button 
                 HorizontalAlignment="Right" 
                 VerticalAlignment="Center" 
                 Command="{Binding Cancel}" 
                 IsVisible="{Binding IsCancellable}">
-                <customControls:LocalizedLabel LocalId="task-cancel"/> 
+                <Border Padding="15" Background="{StaticResource DefaultGrad}" BoxShadow="0 1 1 0 #121212">
+                    <customControls:LocalizedLabel LocalId="task-cancel"/> 
+                </Border>
             </Button>
         </Panel>
-        <Panel>
-            <Border Background="{StaticResource DefaultForeground}" MinHeight="210">
-                <TextBlock TextWrapping="Wrap" Text="{Binding Message}" MaxLines="10" Margin="15"/>
-            </Border>
-        </Panel>
+        <Grid ColumnDefinitions="*,*">
+            <ScrollViewer Grid.Column="0" Grid.ColumnSpan="{Binding LoadingColumnSize}">
+                <ItemsControl
+                    Background="#00000000"
+                    ItemsSource="{Binding LoadingContexts}"
+                    Padding="0" >
+                    <ItemsControl.ItemsPanel>
+                        <ItemsPanelTemplate>
+                            <StackPanel Orientation="Vertical" Spacing="5" Margin="5" />
+                        </ItemsPanelTemplate>
+                    </ItemsControl.ItemsPanel>
+                
+                    <ItemsControl.ItemTemplate>
+                        <DataTemplate DataType="{x:Type popup:LoadingContext}">
+                            <Border Background="{StaticResource DefaultGrad}" BoxShadow="0 1 1 0 #121212">
+                                <StackPanel Margin="15">
+                                    <ProgressBar Height="40" Maximum="{Binding CurrJobs}" Value="{Binding ResolvedJobs}" />
+                                    <Panel Margin="5 15 5 5">
+                                        <Label HorizontalAlignment="Left" VerticalAlignment="Center">
+                                            <TextBlock Text="{Binding LoadingText}" />
+                                        </Label>
+                                        <Label HorizontalAlignment="Right" VerticalAlignment="Center">
+                                            <TextBlock Text="{Binding Message}" />
+                                        </Label>
+                                    </Panel>
+                                </StackPanel>
+                            </Border>
+                        </DataTemplate>
+                    </ItemsControl.ItemTemplate>
+                </ItemsControl>
+            </ScrollViewer>
+            
+            <StackPanel 
+                Grid.Column="1" 
+                Margin="10" Spacing="15"
+                IsVisible="{Binding ShowSpeed}">
+                <customControls:SimpleGraph Values="{Binding Values}" 
+                                            Height="167" 
+                                            GridBrush="{StaticResource DefaultForeground}"/>
+                <Border Background="{StaticResource DefaultGrad}" BoxShadow="0 1 1 0 #121212">
+                    <Panel Margin="10">
+                        <Label>Speed</Label>
+                        <Label HorizontalAlignment="Right">
+                            <TextBlock Text="{Binding SpeedText}" />
+                        </Label>
+                    </Panel>
+                </Border>
+            </StackPanel>
+        </Grid>
     </StackPanel>
 </UserControl>

Nebula.Launcher/Views/VisualErrorView.axaml

@@ -0,0 +1,39 @@
+<UserControl 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"
+             xmlns:viewModels="clr-namespace:Nebula.Launcher.ViewModels"
+             xmlns:converters="clr-namespace:Nebula.Launcher.Converters"
+             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+             x:DataType="viewModels:VisualErrorViewModel"
+             x:Class="Nebula.Launcher.Views.VisualErrorView">
+    <Design.DataContext>
+        <viewModels:VisualErrorViewModel />
+    </Design.DataContext>
+    <Grid RowDefinitions="30,*" ColumnDefinitions="200,*">
+        <Border Grid.Row="1" Grid.Column="0" 
+                CornerRadius="10,0,0,10" 
+                BorderThickness="0,0,2,0" 
+                BorderBrush="{StaticResource DefaultForeground}">
+            <Image Source="{Binding ImgPath, Converter={x:Static converters:TypeConverters.ImageConverter}}" Width="200" Height="200"/>
+        </Border>
+        <Border Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="2" CornerRadius="10,10,0,0">
+            <Border.Background>
+                <LinearGradientBrush EndPoint="100%,50%" StartPoint="10%,20%">
+                    <GradientStop Color="#FF6B6B" Offset="0.0" />
+                    <GradientStop Color="#FF8E53" Offset="0.3" />
+                    <GradientStop Color="#FF5E3A" Offset="0.6" />
+                    <GradientStop Color="#FF5e5e" Offset="1.0" />
+                </LinearGradientBrush>
+            </Border.Background>
+            <Label HorizontalAlignment="Center"><TextBlock Text="{Binding Title}"/></Label>
+        </Border>
+        <TextBlock 
+            Grid.Row="1" 
+            Grid.Column="1" 
+            Margin="15" 
+            HorizontalAlignment="Center" 
+            TextWrapping="Wrap"
+            Text="{Binding Description}"/>
+    </Grid>
+</UserControl>

Nebula.Launcher/Views/VisualErrorView.axaml.cs

@@ -0,0 +1,11 @@
+using Avalonia.Controls;
+
+namespace Nebula.Launcher.Views;
+
+public partial class VisualErrorView : UserControl
+{
+    public VisualErrorView()
+    {
+        InitializeComponent();
+    }
+}

Nebula.Runner/App.cs

@@ -2,15 +2,18 @@ using Nebula.Runner.Services;
 using Nebula.Shared;
 using Nebula.Shared.Models;
 using Nebula.Shared.Services;
+using Nebula.Shared.Services.Logging;
 using Nebula.Shared.Utils;
 using Robust.LoaderApi;
 
 namespace Nebula.Runner;
 
 [ServiceRegister]
-public sealed class App(RunnerService runnerService, ContentService contentService)
+public sealed class App(RunnerService runnerService, ContentService contentService, DebugService debugService)
     : IRedialApi
 {
+    public ILogger logger = debugService.GetLogger("Runner");
+    
     public void Redial(Uri uri, string text = "")
     {
     }
@@ -21,29 +24,37 @@ public sealed class App(RunnerService runnerService, ContentService contentServi
         var urlraw = Environment.GetEnvironmentVariable("GAME_URL") ?? "ss14://localhost";
 
         var url = urlraw.ToRobustUrl();
-
-        using var cancelTokenSource = new CancellationTokenSource();
-        var buildInfo = await contentService.GetBuildInfo(url, cancelTokenSource.Token);
-
-
-        var args = new List<string>
-        {
-            "--username", login,
-            "--cvar", "launch.launcher=true"
-        };
-
-        var connectionString = url.ToString();
-        if (!string.IsNullOrEmpty(buildInfo.BuildInfo.ConnectAddress))
-            connectionString = buildInfo.BuildInfo.ConnectAddress;
         
-        args.Add("--launcher");
+        try
+        {
+            using var cancelTokenSource = new CancellationTokenSource();
+            var buildInfo = await contentService.GetBuildInfo(url, cancelTokenSource.Token);
 
-        args.Add("--connect-address");
-        args.Add(connectionString);
 
-        args.Add("--ss14-address");
-        args.Add(url.ToString());
+            var args = new List<string>
+            {
+                "--username", login,
+                "--cvar", "launch.launcher=true"
+            };
 
-        await runnerService.Run(args.ToArray(), buildInfo, this, new ConsoleLoadingHandler(), cancelTokenSource.Token);
+            var connectionString = url.ToString();
+            if (!string.IsNullOrEmpty(buildInfo.BuildInfo.ConnectAddress))
+                connectionString = buildInfo.BuildInfo.ConnectAddress;
+        
+            args.Add("--launcher");
+
+            args.Add("--connect-address");
+            args.Add(connectionString);
+
+            args.Add("--ss14-address");
+            args.Add(url.ToString());
+
+            await runnerService.Run(args.ToArray(), buildInfo, this, new ConsoleLoadingHandlerFactory(), cancelTokenSource.Token);
+        }
+        catch (Exception e)
+        {
+            logger.Error(e);
+            throw;
+        }
     }
 }

Nebula.Runner/Services/RunnerService.cs

@@ -6,6 +6,7 @@ using Nebula.Shared;
 using Nebula.Shared.Models;
 using Nebula.Shared.Services;
 using Nebula.Shared.Services.Logging;
+using Nebula.Shared.Utils;
 using Robust.LoaderApi;
 
 namespace Nebula.Runner.Services;
@@ -24,12 +25,12 @@ public sealed class RunnerService(
     private bool MetricEnabled = false; //TODO: ADD METRIC THINKS LATER
 
     public async Task Run(string[] runArgs, RobustBuildInfo buildInfo, IRedialApi redialApi,
-        ILoadingHandler loadingHandler,
+        ILoadingHandlerFactory loadingHandler,
         CancellationToken cancellationToken)
     {
         _logger.Log("Start Content!");
-
-        var engine = await engineService.EnsureEngine(buildInfo.BuildInfo.Build.EngineVersion);
+        
+        var engine = await engineService.EnsureEngine(buildInfo.BuildInfo.Build.EngineVersion, loadingHandler, cancellationToken);
 
         if (engine is null)
             throw new Exception("Engine version not found: " + buildInfo.BuildInfo.Build.EngineVersion);
@@ -48,7 +49,7 @@ public sealed class RunnerService(
             foreach (var moduleStr in modules)
             {
                 var module =
-                    await engineService.EnsureEngineModules(moduleStr, buildInfo.BuildInfo.Build.EngineVersion);
+                    await engineService.EnsureEngineModules(moduleStr, loadingHandler, buildInfo.BuildInfo.Build.EngineVersion);
                 if (module is not null)
                     extraMounts.Add(new ApiMount(module, "/"));
             }
@@ -78,8 +79,8 @@ public sealed class RunnerService(
             MetricsEnabledPatcher.ApplyPatch(reflectionService, harmonyService);
             metricServer = RunHelper.RunMetric(prometheusAssembly);
         }
-       
-        
+
+        loadingHandler.Dispose();
         await Task.Run(() => loader.Main(args), cancellationToken);
         
         metricServer?.Dispose();
@@ -93,7 +94,8 @@ public static class MetricsEnabledPatcher
         var harmony = harmonyService.Instance.Harmony;
         
         var targetType = reflectionService.GetType("Robust.Shared.GameObjects.EntitySystemManager");
-        var targetMethod = targetType.GetProperty("MetricsEnabled").GetGetMethod();
+        var targetMethod = targetType.GetProperty("MetricsEnabled")?.GetGetMethod() ?? 
+                           throw new Exception("target method is null.. huh.. do we have patch a right think?");
         
         var prefix = typeof(MetricsEnabledPatcher).GetMethod(nameof(MetricsEnabledGetterPrefix),
             BindingFlags.Static | BindingFlags.NonPublic);
@@ -139,44 +141,3 @@ public static class RunHelper
     }
 }
 
-public static class ContentManifestParser
-{
-    public static List<string> ExtractModules(Stream manifestStream)
-    {
-        using var reader = new StreamReader(manifestStream);
-        return ExtractModules(reader.ReadToEnd());
-    }
-    
-    public static List<string> ExtractModules(string manifestContent)
-    {
-        var modules = new List<string>();
-        var lines = manifestContent.Split(new[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries);
-
-        bool inModulesSection = false;
-
-        foreach (var rawLine in lines)
-        {
-            var line = rawLine.Trim();
-
-            if (line.StartsWith("modules:"))
-            {
-                inModulesSection = true;
-                continue;
-            }
-
-            if (inModulesSection)
-            {
-                if (line.StartsWith("- "))
-                {
-                    modules.Add(line.Substring(2).Trim());
-                }
-                else if (!line.StartsWith(" "))
-                {
-                    break;
-                }
-            }
-        }
-
-        return modules;
-    }
-}

Nebula.Shared/ConfigMigrations/ProfileMigration.cs

@@ -1,16 +1,18 @@
 using Microsoft.Extensions.DependencyInjection;
+using Nebula.Shared.Configurations.Migrations;
 using Nebula.Shared.Models;
 using Nebula.Shared.Services;
+using Nebula.Shared.Utils;
 
 namespace Nebula.Shared.ConfigMigrations;
 
 public class ProfileMigrationV2(string oldName, string newName)
-    : BaseConfigurationMigration<ProfileAuthCredentialsV2[], AuthTokenCredentials[]>(oldName, newName)
+    : BaseConfigurationMigration<ProfileAuthCredentials[], string[]>(oldName, newName)
 {
-    protected override async Task<AuthTokenCredentials[]> Migrate(IServiceProvider serviceProvider, ProfileAuthCredentialsV2[] oldValue, ILoadingHandler loadingHandler)
+    protected override async Task<string[]> Migrate(IServiceProvider serviceProvider, ProfileAuthCredentials[] oldValue, ILoadingHandler loadingHandler)
     {
-        loadingHandler.SetLoadingMessage("Migrating Profile V2 -> V3");
-        var list = new List<AuthTokenCredentials>();
+        loadingHandler.SetLoadingMessage("Migrating Profile V2 -> V4");
+        var list = new List<string>();
         var authService = serviceProvider.GetRequiredService<AuthService>();
         var logger = serviceProvider.GetRequiredService<DebugService>().GetLogger("ProfileMigrationV2");
         foreach (var oldCredentials in oldValue)
@@ -18,8 +20,8 @@ public class ProfileMigrationV2(string oldName, string newName)
             try
             {
                 loadingHandler.SetLoadingMessage($"Migrating {oldCredentials.Login}");
-                var newCred = await authService.Auth(oldCredentials.Login, oldCredentials.Password, oldCredentials.AuthServer);
-                list.Add(newCred);
+                await authService.Auth(oldCredentials.Login, oldCredentials.Password, oldCredentials.AuthServer);
+                list.Add(CryptographicStore.Encrypt(oldCredentials, CryptographicStore.GetComputerKey()));
             }
             catch (Exception e)
             {
@@ -33,7 +35,13 @@ public class ProfileMigrationV2(string oldName, string newName)
     }
 }
 
-public sealed record ProfileAuthCredentialsV2(
-    string Login,
-    string Password,
-    string AuthServer);
+public class ProfileMigrationV3V4(string oldName, string newName)
+    : BaseConfigurationMigration<AuthTokenCredentials[], string[]>(oldName, newName)
+{
+    protected override Task<string[]> Migrate(IServiceProvider serviceProvider, AuthTokenCredentials[] oldValue, ILoadingHandler loadingHandler)
+    {
+        Console.WriteLine("Removing profile v3 because no password is provided");
+        return Task.FromResult(Array.Empty<string>());
+    }
+}
+

Nebula.Shared/Configurations/ConVar.cs

@@ -0,0 +1,18 @@
+using Nebula.Shared.Services;
+
+namespace Nebula.Shared.Configurations;
+
+public class ConVar<T>
+{
+    internal ConfigurationService.OnConfigurationChangedDelegate<T?>? OnValueChanged;
+    
+    public ConVar(string name, T? defaultValue = default)
+    {
+        Name = name ?? throw new ArgumentNullException(nameof(name));
+        DefaultValue = defaultValue;
+    }
+
+    public string Name { get; }
+    public Type Type => typeof(T);
+    public T? DefaultValue { get; }
+}

Nebula.Shared/Configurations/ConVarBuilder.cs

@@ -0,0 +1,25 @@
+using Nebula.Shared.Configurations.Migrations;
+using Nebula.Shared.Services;
+
+namespace Nebula.Shared.Configurations;
+
+public static class ConVarBuilder
+{
+    public static ConVar<T> Build<T>(string name, T? defaultValue = default)
+    {
+        if (string.IsNullOrWhiteSpace(name))
+            throw new ArgumentException("ConVar name cannot be null or whitespace.", nameof(name));
+
+        return new ConVar<T>(name, defaultValue);
+    }
+
+    public static ConVar<T> BuildWithMigration<T>(string name, IConfigurationMigration migration, T? defaultValue = default)
+    {
+        if (string.IsNullOrWhiteSpace(name))
+            throw new ArgumentException("ConVar name cannot be null or whitespace.", nameof(name));
+        
+        ConfigurationService.AddConfigurationMigration(migration);
+
+        return new ConVar<T>(name, defaultValue);
+    }
+}

Nebula.Shared/Configurations/ConVarObserver.cs

@@ -0,0 +1,67 @@
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+using Nebula.Shared.Services;
+
+namespace Nebula.Shared.Configurations;
+
+public sealed class ConVarObserver<T> : IDisposable, INotifyPropertyChanged, INotifyPropertyChanging
+{
+    private readonly ConVar<T> _convar;
+    private readonly ConfigurationService _configurationService;
+    
+    private T? _value;
+    private ConfigurationService.OnConfigurationChangedDelegate<T> _delegate;
+
+    public bool HasValue => Value != null;
+
+    public T? Value
+    {
+        get => _value; 
+        set => _configurationService.SetConfigValue(_convar, value);
+    }
+
+    public ConVarObserver(ConVar<T> convar, ConfigurationService configurationService)
+    {
+        _convar = convar;
+        _convar.OnValueChanged += OnValueChanged;
+        _configurationService = configurationService;
+        _delegate += OnValueChanged;
+        
+        OnValueChanged(configurationService.GetConfigValue(_convar));
+    }
+
+    private void OnValueChanged(T? value)
+    {
+        OnPropertyChanging(nameof(Value));
+        OnPropertyChanging(nameof(HasValue));
+        
+        if(value is null && _value is null)
+            return;
+        if (_value is not null && _value.Equals(value))
+            return;
+        
+        _value = value;
+        OnPropertyChanged(nameof(Value));
+        OnPropertyChanged(nameof(HasValue));
+    }
+
+    public void Dispose()
+    {
+        _convar.OnValueChanged -= OnValueChanged;
+    }
+    
+    public static implicit operator T? (ConVarObserver<T> convar) => convar.Value;
+
+    public event PropertyChangingEventHandler? PropertyChanging;
+    public event PropertyChangedEventHandler? PropertyChanged;
+
+    private void OnPropertyChanged([CallerMemberName] string? propertyName = null)
+    {
+        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+    }
+    private void OnPropertyChanging([CallerMemberName] string? propertyName = null)
+    {
+        PropertyChanging?.Invoke(this, new PropertyChangingEventArgs(propertyName));
+    }
+    
+}

Nebula.Shared/Configurations/Migrations/BaseConfigurationMigration.cs

@@ -0,0 +1,28 @@
+using Nebula.Shared.Models;
+using Nebula.Shared.Services;
+
+namespace Nebula.Shared.Configurations.Migrations;
+
+public abstract class BaseConfigurationMigration<T1,T2> : IConfigurationMigration
+{
+    protected ConVar<T1> OldConVar;
+    protected ConVar<T2> NewConVar;
+    
+    public BaseConfigurationMigration(string oldName, string newName)
+    {
+        OldConVar = ConVarBuilder.Build<T1>(oldName);
+        NewConVar = ConVarBuilder.Build<T2>(newName);
+    }
+
+    public async Task DoMigrate(ConfigurationService configurationService, IServiceProvider serviceProvider, ILoadingHandler loadingHandler)
+    {
+        var oldValue = configurationService.GetConfigValue(OldConVar);
+        if(oldValue == null) return;
+        
+        var newValue = await Migrate(serviceProvider, oldValue, loadingHandler);
+        configurationService.SetConfigValue(NewConVar, newValue);
+        configurationService.ClearConfigValue(OldConVar);
+    }
+
+    protected abstract Task<T2> Migrate(IServiceProvider serviceProvider, T1 oldValue, ILoadingHandler loadingHandler);
+}

Nebula.Shared/Configurations/Migrations/IConfigurationMigration.cs

@@ -0,0 +1,9 @@
+using Nebula.Shared.Models;
+using Nebula.Shared.Services;
+
+namespace Nebula.Shared.Configurations.Migrations;
+
+public interface IConfigurationMigration
+{
+    public Task DoMigrate(ConfigurationService configurationService, IServiceProvider serviceProvider, ILoadingHandler loadingHandler);
+}

Nebula.Shared/Configurations/Migrations/MigrationQueue.cs

@@ -0,0 +1,15 @@
+using Nebula.Shared.Models;
+using Nebula.Shared.Services;
+
+namespace Nebula.Shared.Configurations.Migrations;
+
+public class MigrationQueue(List<IConfigurationMigration> migrations) : IConfigurationMigration
+{
+    public async Task DoMigrate(ConfigurationService configurationService, IServiceProvider serviceProvider , ILoadingHandler loadingHandler)
+    {
+        foreach (var migration in migrations)
+        {
+            await migration.DoMigrate(configurationService, serviceProvider, loadingHandler);
+        }
+    }
+}

Nebula.Shared/Configurations/Migrations/MigrationQueueBuilder.cs

@@ -0,0 +1,19 @@
+namespace Nebula.Shared.Configurations.Migrations;
+
+public class MigrationQueueBuilder
+{
+    public static MigrationQueueBuilder Instance => new();
+    
+    private readonly List<IConfigurationMigration> _migrations = [];
+
+    public MigrationQueueBuilder With(IConfigurationMigration migration)
+    {
+        _migrations.Add(migration);
+        return this;
+    }
+
+    public MigrationQueue Build()
+    {
+        return new MigrationQueue(_migrations);
+    }
+}

Nebula.Shared/CurrentConVar.cs

@@ -1,3 +1,4 @@
+using Nebula.Shared.Configurations;
 using Nebula.Shared.Models;
 using Nebula.Shared.Services;
 

Nebula.Shared/FileApis/FileApi.cs

@@ -1,5 +1,7 @@
 using System.Diagnostics.CodeAnalysis;
 using Nebula.Shared.FileApis.Interfaces;
+using Nebula.Shared.Models;
+using Nebula.Shared.Utils;
 
 namespace Nebula.Shared.FileApis;
 
@@ -31,7 +33,7 @@ public sealed class FileApi : IReadWriteFileApi
         return false;
     }
 
-    public bool Save(string path, Stream input)
+    public bool Save(string path, Stream input, ILoadingHandler? loadingHandler = null)
     {
         var currPath = Path.Join(RootPath, path);
 
@@ -41,6 +43,13 @@ public sealed class FileApi : IReadWriteFileApi
             if (!dirInfo.Exists) dirInfo.Create();
 
             using var stream = new FileStream(currPath, FileMode.Create, FileAccess.Write, FileShare.None);
+
+            if (loadingHandler != null)
+            {
+                input.CopyTo(stream, loadingHandler);
+                return true;
+            }
+            
             input.CopyTo(stream);
             return true;
         }

Nebula.Shared/FileApis/HashApi.cs

@@ -47,8 +47,8 @@ public class HashApi : IFileApi
         return false;
     }
 
-    public bool Save(RobustManifestItem item, Stream stream){
-        return _fileApi.Save(GetManifestPath(item), stream);
+    public bool Save(RobustManifestItem item, Stream stream, ILoadingHandler? loadingHandler){
+        return _fileApi.Save(GetManifestPath(item), stream, loadingHandler);
     }
 
     public bool Has(RobustManifestItem item){

Nebula.Shared/FileApis/Interfaces/IWriteFileApi.cs

@@ -1,8 +1,10 @@
-namespace Nebula.Shared.FileApis.Interfaces;
+using Nebula.Shared.Models;
+
+namespace Nebula.Shared.FileApis.Interfaces;
 
 public interface IWriteFileApi
 {
-    public bool Save(string path, Stream input);
+    public bool Save(string path, Stream input, ILoadingHandler? loadingHandler = null);
     public bool Remove(string path);
     public bool Has(string path);
 }

Nebula.Shared/Models/ILoadingHandler.cs

@@ -1,20 +1,20 @@
 namespace Nebula.Shared.Models;
 
-public interface ILoadingHandler
+public interface ILoadingHandler : IDisposable
 {
-    public void SetJobsCount(int count);
-    public int GetJobsCount();
+    public void SetJobsCount(long count);
+    public long GetJobsCount();
 
-    public void SetResolvedJobsCount(int count);
-    public int GetResolvedJobsCount();
+    public void SetResolvedJobsCount(long count);
+    public long GetResolvedJobsCount();
     public void SetLoadingMessage(string message);
 
-    public void AppendJob(int count = 1)
+    public void AppendJob(long count = 1)
     {
         SetJobsCount(GetJobsCount() + count);
     }
 
-    public void AppendResolvedJob(int count = 1)
+    public void AppendResolvedJob(long count = 1)
     {
         SetResolvedJobsCount(GetResolvedJobsCount() + count);
     }
@@ -31,6 +31,57 @@ public interface ILoadingHandler
     }
 }
 
+public interface ILoadingFormater
+{
+    public string Format(ILoadingHandler loadingHandler);
+}
+
+public interface ILoadingHandlerFactory: IDisposable
+{
+    public ILoadingHandler CreateLoadingContext(ILoadingFormater? loadingFormater = null);
+}
+
+public interface IConnectionSpeedHandler
+{
+    public void PasteSpeed(int speed);
+}
+
+public sealed class DefaultLoadingFormater : ILoadingFormater
+{
+    public static DefaultLoadingFormater Instance = new DefaultLoadingFormater();
+    public string Format(ILoadingHandler loadingHandler)
+    {
+        return loadingHandler.GetResolvedJobsCount() + "/" + loadingHandler.GetJobsCount();
+    }
+}
+
+public sealed class FileLoadingFormater : ILoadingFormater
+{
+    public string Format(ILoadingHandler loadingHandler)
+    {
+        return FormatBytes(loadingHandler.GetResolvedJobsCount()) + " / " + FormatBytes(loadingHandler.GetJobsCount());
+    }
+    
+    public static string FormatBytes(long bytes)
+    {
+        const long KB = 1024;
+        const long MB = KB * 1024;
+        const long GB = MB * 1024;
+        const long TB = GB * 1024;
+
+        if (bytes >= TB)
+            return $"{bytes / (double)TB:0.##} TB";
+        if (bytes >= GB)
+            return $"{bytes / (double)GB:0.##} GB";
+        if (bytes >= MB)
+            return $"{bytes / (double)MB:0.##} MB";
+        if (bytes >= KB)
+            return $"{bytes / (double)KB:0.##} KB";
+
+        return $"{bytes} B";
+    }
+}
+
 public sealed class QueryJob : IDisposable
 {
     private readonly ILoadingHandler _handler;

Nebula.Shared/Nebula.Shared.csproj

@@ -12,7 +12,7 @@
             <LogicalName>Utility.runtime.json</LogicalName>
         </EmbeddedResource>
         <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="9.0.0" />
-        <PackageReference Include="Robust.Natives" Version="0.1.1" />
+        <PackageReference Include="Robust.Natives" Version="0.2.3" />
         <PackageReference Include="SharpZstd.Interop" Version="1.5.6" />
     </ItemGroup>
 

Nebula.Shared/Services/AuthService.cs

@@ -38,6 +38,7 @@ public class AuthService(
             var err = await e.Content.AsJson<AuthDenyError>();
             
             if (err is null) throw;
+            e.Dispose();
             throw new AuthException(err);
         }
     }
@@ -50,15 +51,65 @@ public class AuthService(
         requestMessage.Headers.Authorization = new AuthenticationHeaderValue("SS14Auth", tokenCredentials.Token.Token);
         using var resp = await _httpClient.SendAsync(requestMessage, cancellationService.Token);
     }
+    
+    public async Task Logout(AuthTokenCredentials tokenCredentials)
+    {
+        var authUrl = new Uri($"{tokenCredentials.AuthServer}api/auth/logout");
+        await restService.PostAsync<NullResponse, TokenRequest>(TokenRequest.From(tokenCredentials), authUrl, cancellationService.Token);
+    }
+
+    public async Task<AuthTokenCredentials> Refresh(AuthTokenCredentials tokenCredentials)
+    {
+        var authUrl = new Uri($"{tokenCredentials.AuthServer}api/auth/refresh");
+        try
+        {
+            var newToken = await restService.PostAsync<LoginToken, TokenRequest>(
+                TokenRequest.From(tokenCredentials), authUrl, cancellationService.Token);
+
+            return tokenCredentials with { Token = newToken };
+        }
+        catch (RestRequestException e)
+        {
+            if (e.StatusCode == HttpStatusCode.Unauthorized)
+                throw new AuthTokenExpiredException(tokenCredentials);
+            
+            e.Dispose();
+            throw;
+        }
+    }
+}
+
+public sealed class AuthTokenExpiredException : Exception
+{
+    public AuthTokenExpiredException(AuthTokenCredentials credentials): base("Taken token is expired. Login: " + credentials.Login)
+    {
+    }
 }
 
 public sealed record AuthTokenCredentials(Guid UserId, LoginToken Token, string Login, string AuthServer);
+public sealed record ProfileAuthCredentials(
+    string Login,
+    string Password,
+    string AuthServer);
 
 public sealed record AuthDenyError(string[] Errors, AuthenticateDenyCode Code);
 
 public sealed class AuthException(AuthDenyError error) : Exception
 {
     public AuthDenyError Error { get; } = error;
+
+    public override string Message
+    {
+        get
+        {
+            var str = "Error while logging in. Please try again. " + Error.Code;
+            foreach (var error in Error.Errors)
+            {
+                str += "\n" + error;
+            }
+            return str;
+        }
+    }
 }
 
 [JsonConverter(typeof(JsonStringEnumConverter))]
@@ -71,3 +122,13 @@ public enum AuthenticateDenyCode
         TfaInvalid         =  4,
         AccountLocked      =  5,
 }
+
+public sealed record TokenRequest(string Token)
+{
+    public static TokenRequest From(AuthTokenCredentials authTokenCredentials)
+    {
+        return new TokenRequest(authTokenCredentials.Token.Token);
+    }
+    
+    public static TokenRequest Empty { get; } = new TokenRequest("");
+}

Nebula.Shared/Services/ConfigurationService.cs

@@ -1,107 +1,13 @@
 using System.Diagnostics.CodeAnalysis;
 using System.Text.Json;
-using Microsoft.Extensions.DependencyInjection;
+using Nebula.Shared.Configurations;
+using Nebula.Shared.Configurations.Migrations;
 using Nebula.Shared.FileApis.Interfaces;
 using Nebula.Shared.Models;
 using Nebula.Shared.Services.Logging;
-using Robust.LoaderApi;
 
 namespace Nebula.Shared.Services;
 
-public class ConVar<T>
-{
-    internal ConfigurationService.OnConfigurationChangedDelegate<T?>? OnValueChanged;
-    
-    public ConVar(string name, T? defaultValue = default)
-    {
-        Name = name ?? throw new ArgumentNullException(nameof(name));
-        DefaultValue = defaultValue;
-    }
-
-    public string Name { get; }
-    public Type Type => typeof(T);
-    public T? DefaultValue { get; }
-}
-
-public static class ConVarBuilder
-{
-    public static ConVar<T> Build<T>(string name, T? defaultValue = default)
-    {
-        if (string.IsNullOrWhiteSpace(name))
-            throw new ArgumentException("ConVar name cannot be null or whitespace.", nameof(name));
-
-        return new ConVar<T>(name, defaultValue);
-    }
-
-    public static ConVar<T> BuildWithMigration<T>(string name, IConfigurationMigration migration, T? defaultValue = default)
-    {
-        if (string.IsNullOrWhiteSpace(name))
-            throw new ArgumentException("ConVar name cannot be null or whitespace.", nameof(name));
-        
-        ConfigurationService.AddConfigurationMigration(migration);
-
-        return new ConVar<T>(name, defaultValue);
-    }
-}
-
-public interface IConfigurationMigration
-{
-    public Task DoMigrate(ConfigurationService configurationService, IServiceProvider serviceProvider, ILoadingHandler loadingHandler);
-}
-
-public abstract class BaseConfigurationMigration<T1,T2> : IConfigurationMigration
-{
-    protected ConVar<T1> OldConVar;
-    protected ConVar<T2> NewConVar;
-    
-    public BaseConfigurationMigration(string oldName, string newName)
-    {
-        OldConVar = ConVarBuilder.Build<T1>(oldName);
-        NewConVar = ConVarBuilder.Build<T2>(newName);
-    }
-
-    public async Task DoMigrate(ConfigurationService configurationService, IServiceProvider serviceProvider, ILoadingHandler loadingHandler)
-    {
-        var oldValue = configurationService.GetConfigValue(OldConVar);
-        if(oldValue == null) return;
-        
-        var newValue = await Migrate(serviceProvider, oldValue, loadingHandler);
-        configurationService.SetConfigValue(NewConVar, newValue);
-        configurationService.ClearConfigValue(OldConVar);
-    }
-
-    protected abstract Task<T2> Migrate(IServiceProvider serviceProvider, T1 oldValue, ILoadingHandler loadingHandler);
-}
-
-public class MigrationQueue(List<IConfigurationMigration> migrations) : IConfigurationMigration
-{
-    public async Task DoMigrate(ConfigurationService configurationService, IServiceProvider serviceProvider , ILoadingHandler loadingHandler)
-    {
-        foreach (var migration in migrations)
-        {
-            await migration.DoMigrate(configurationService, serviceProvider, loadingHandler);
-        }
-    }
-}
-
-public class MigrationQueueBuilder
-{
-    public static MigrationQueueBuilder Instance => new();
-    
-    private readonly List<IConfigurationMigration> _migrations = [];
-
-    public MigrationQueueBuilder With(IConfigurationMigration migration)
-    {
-        _migrations.Add(migration);
-        return this;
-    }
-
-    public MigrationQueue Build()
-    {
-        return new MigrationQueue(_migrations);
-    }
-}
-
 [ServiceRegister]
 public class ConfigurationService
 {
@@ -126,31 +32,37 @@ public class ConfigurationService
         ConfigurationApi = fileService.CreateFileApi("config");
     }
 
-    public void MigrateConfigs(ILoadingHandler loadingHandler)
+    public void MigrateConfigs(ILoadingHandlerFactory loadingHandlerFactory)
     {
         Task.Run(async () =>
         {
+            var loadingHandler = loadingHandlerFactory.CreateLoadingContext();
             foreach (var migration in _migrations)
             {
                 await migration.DoMigrate(this, _serviceProvider, loadingHandler);
             }
 
-            if (loadingHandler is IDisposable disposable)
-            {
-                disposable.Dispose();
-            }
+            loadingHandler.Dispose();
+            loadingHandlerFactory.Dispose();
         });
     }
 
-    public ConfigChangeSubscriberDisposable<T> SubscribeVarChanged<T>(ConVar<T> convar, OnConfigurationChangedDelegate<T?> @delegate, bool invokeNow = false)
+    public ConVarObserver<T> SubscribeVarChanged<T>(ConVar<T> convar, OnConfigurationChangedDelegate<T?> @delegate, bool invokeNow = false)
     {
         convar.OnValueChanged += @delegate;
         if (invokeNow)
         {
             @delegate(GetConfigValue(convar));
         }
-        
-        return new ConfigChangeSubscriberDisposable<T>(convar, @delegate);
+
+        var delegation = SubscribeVarChanged<T>(convar);
+        delegation.PropertyChanged += (_, _) => @delegate(delegation.Value);
+        return delegation;
+    }
+
+    public ConVarObserver<T> SubscribeVarChanged<T>(ConVar<T> convar)
+    {
+        return new ConVarObserver<T>(convar, this);
     }
     
     public T? GetConfigValue<T>(ConVar<T> conVar)
@@ -252,20 +164,4 @@ public class ConfigurationService
     {
         return $"{conVar.Name}.json";
     }
-}
-
-public sealed class ConfigChangeSubscriberDisposable<T> : IDisposable
-{
-    private readonly ConVar<T> _convar;
-    private readonly ConfigurationService.OnConfigurationChangedDelegate<T> _delegate;
-
-    public ConfigChangeSubscriberDisposable(ConVar<T> convar, ConfigurationService.OnConfigurationChangedDelegate<T> @delegate)
-    {
-        _convar = convar;
-        _delegate = @delegate;
-    }
-    public void Dispose()
-    {
-        _convar.OnValueChanged -= _delegate;
-    }
 }

Nebula.Shared/Services/ContentService.Download.cs

@@ -1,4 +1,5 @@
 using System.Buffers.Binary;
+using System.Diagnostics;
 using System.Globalization;
 using System.Net.Http.Headers;
 using System.Numerics;
@@ -34,11 +35,10 @@ public partial class ContentService
     }
 
     public async Task<HashApi> EnsureItems(ManifestReader manifestReader, Uri downloadUri,
-        ILoadingHandler loadingHandler,
+        ILoadingHandlerFactory loadingFactory,
         CancellationToken cancellationToken)
     {
         List<RobustManifestItem> allItems = [];
-        List<RobustManifestItem> items = [];
 
         while (manifestReader.TryReadItem(out var item))
         {
@@ -50,40 +50,44 @@ public partial class ContentService
 
         var hashApi = CreateHashApi(allItems);
 
-        items = allItems.Where(a=> !hashApi.Has(a)).ToList();
-
-        loadingHandler.SetLoadingMessage("Download Count:" + items.Count);
+        var items = allItems.Where(a=> !hashApi.Has(a)).ToList();
+        
         _logger.Log("Download Count:" + items.Count);
-        await Download(downloadUri, items, hashApi, loadingHandler, cancellationToken);
+        await Download(downloadUri, items, hashApi, loadingFactory, cancellationToken);
 
         return hashApi;
     }
 
-    public async Task<HashApi> EnsureItems(RobustManifestInfo info, ILoadingHandler loadingHandler,
+    public async Task<HashApi> EnsureItems(RobustManifestInfo info, ILoadingHandlerFactory loadingFactory,
         CancellationToken cancellationToken)
     {
         _logger.Log("Getting manifest: " + info.Hash);
-        loadingHandler.SetLoadingMessage("Getting manifest: " + info.Hash);
+        var loadingHandler = loadingFactory.CreateLoadingContext(new FileLoadingFormater());
+        loadingHandler.SetLoadingMessage("Loading manifest");
 
         if (ManifestFileApi.TryOpen(info.Hash, out var stream))
         {
-            _logger.Log("Loading manifest from: " + info.Hash);
-            return await EnsureItems(new ManifestReader(stream), info.DownloadUri, loadingHandler, cancellationToken);
+            _logger.Log("Loading manifest from disk");
+            loadingHandler.Dispose();
+            return await EnsureItems(new ManifestReader(stream), info.DownloadUri, loadingFactory, cancellationToken);
         }
         
         SetServerHash(info.ManifestUri.ToString(), info.Hash);
 
         _logger.Log("Fetching manifest from: " + info.ManifestUri);
-        loadingHandler.SetLoadingMessage("Fetching manifest from: " + info.ManifestUri);
+        loadingHandler.SetLoadingMessage("Fetching manifest from: " + info.ManifestUri.Host);
 
         var response = await _http.GetAsync(info.ManifestUri, cancellationToken);
-        if (!response.IsSuccessStatusCode) throw new Exception();
-
+        response.EnsureSuccessStatusCode();
+    
+        loadingHandler.SetJobsCount(response.Content.Headers.ContentLength ?? 0);
         await using var streamContent = await response.Content.ReadAsStreamAsync(cancellationToken);
-        ManifestFileApi.Save(info.Hash, streamContent);
+        ManifestFileApi.Save(info.Hash, streamContent, loadingHandler);
+        loadingHandler.Dispose();
         streamContent.Seek(0, SeekOrigin.Begin);
+        
         using var manifestReader = new ManifestReader(streamContent);
-        return await EnsureItems(manifestReader, info.DownloadUri, loadingHandler, cancellationToken);
+        return await EnsureItems(manifestReader, info.DownloadUri, loadingFactory, cancellationToken);
     }
 
     public void Unpack(HashApi hashApi, IWriteFileApi otherApi, ILoadingHandler loadingHandler)
@@ -107,30 +111,22 @@ public partial class ContentService
             }
             else
             {
-                _logger.Error("OH FUCK!! " + item.Path);
+                _logger.Error("Error while unpacking thinks " + item.Path);
             }
 
             loadingHandler.AppendResolvedJob();
         });
-
-        if (loadingHandler is IDisposable disposable)
-        {
-            disposable.Dispose();
-        }
     }
 
-    public async Task Download(Uri contentCdn, List<RobustManifestItem> toDownload, HashApi hashApi, ILoadingHandler loadingHandler,
+    private async Task Download(Uri contentCdn, List<RobustManifestItem> toDownload, HashApi hashApi, ILoadingHandlerFactory loadingHandlerFactory,
         CancellationToken cancellationToken)
     {
         if (toDownload.Count == 0 || cancellationToken.IsCancellationRequested)
         {
-            _logger.Log("Nothing to download! Fuck this!");
+            _logger.Log("Nothing to download! Skip!");
             return;
         }
-
-        var downloadJobWatch = loadingHandler.GetQueryJob();
-
-        loadingHandler.SetLoadingMessage("Downloading from: " + contentCdn);
+        
         _logger.Log("Downloading from: " + contentCdn);
 
         var requestBody = new byte[toDownload.Count * 4];
@@ -152,70 +148,56 @@ public partial class ContentService
 
         request.Headers.AcceptEncoding.Add(new StringWithQualityHeaderValue("zstd"));
         var response = await _http.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, cancellationToken);
-
-        if (cancellationToken.IsCancellationRequested)
-        {
-            _logger.Log("Downloading cancelled!");
-            return;
-        }
-
-        downloadJobWatch.Dispose();
-
         response.EnsureSuccessStatusCode();
 
-        var stream = await response.Content.ReadAsStreamAsync();
-        var bandwidthStream = new BandwidthStream(stream);
-        stream = bandwidthStream;
+        var stream = await response.Content.ReadAsStreamAsync(cancellationToken);
         if (response.Content.Headers.ContentEncoding.Contains("zstd"))
             stream = new ZStdDecompressStream(stream);
 
         await using var streamDispose = stream;
-
-        // Read flags header
-        var streamHeader = await stream.ReadExactAsync(4, null);
+        
+        var streamHeader = await stream.ReadExactAsync(4, cancellationToken);
         var streamFlags = (DownloadStreamHeaderFlags)BinaryPrimitives.ReadInt32LittleEndian(streamHeader);
         var preCompressed = (streamFlags & DownloadStreamHeaderFlags.PreCompressed) != 0;
-
-        // compressContext.SetParameter(ZSTD_cParameter.ZSTD_c_nbWorkers, 4);
-        // If the stream is pre-compressed we need to decompress the blobs to verify BLAKE2B hash.
-        // If it isn't, we need to manually try re-compressing individual files to store them.
+        
         var compressContext = preCompressed ? null : new ZStdCCtx();
         var decompressContext = preCompressed ? new ZStdDCtx() : null;
-
-        // Normal file header:
-        // <int32> uncompressed length
-        // When preCompressed is set, we add:
-        // <int32> compressed length
+        
         var fileHeader = new byte[preCompressed ? 8 : 4];
 
+        var downloadLoadHandler = loadingHandlerFactory.CreateLoadingContext();
+        downloadLoadHandler.SetJobsCount(toDownload.Count);
+        downloadLoadHandler.SetLoadingMessage("Fetching files...");
 
+        if (loadingHandlerFactory is IConnectionSpeedHandler speedHandlerStart)
+            speedHandlerStart.PasteSpeed(0);
+        
         try
         {
-            // Buffer for storing compressed ZStd data.
             var compressBuffer = new byte[1024];
-
-            // Buffer for storing uncompressed data.
             var readBuffer = new byte[1024];
 
             var i = 0;
-
-            loadingHandler.AppendJob(toDownload.Count);
+            var downloadWatchdog = new Stopwatch();
+            var lengthAcc = 0;
+            var timeAcc = 0L;
 
             foreach (var item in toDownload)
             {
-                if (cancellationToken.IsCancellationRequested)
-                {
-                    _logger.Log("Downloading cancelled!");
-                    decompressContext?.Dispose();
-                    compressContext?.Dispose();
-                    return;
-                }
-
+                cancellationToken.ThrowIfCancellationRequested();
+                
+                downloadWatchdog.Restart();
+                
                 // Read file header.
-                await stream.ReadExactAsync(fileHeader, null);
+                await stream.ReadExactAsync(fileHeader, cancellationToken);
 
                 var length = BinaryPrimitives.ReadInt32LittleEndian(fileHeader.AsSpan(0, 4));
+                
+                var fileLoadingHandler = loadingHandlerFactory.CreateLoadingContext(new FileLoadingFormater());
+                fileLoadingHandler.SetLoadingMessage(item.Path.Split("/").Last());
 
+                var blockFileLoadHandle = length <= 100000;
+                
                 EnsureBuffer(ref readBuffer, length);
                 var data = readBuffer.AsMemory(0, length);
 
@@ -226,9 +208,10 @@ public partial class ContentService
 
                     if (compressedLength > 0)
                     {
+                        fileLoadingHandler.AppendJob(compressedLength);
                         EnsureBuffer(ref compressBuffer, compressedLength);
                         var compressedData = compressBuffer.AsMemory(0, compressedLength);
-                        await stream.ReadExactAsync(compressedData, null);
+                        await stream.ReadExactAsync(compressedData, cancellationToken, blockFileLoadHandle ? null : fileLoadingHandler);
 
                         // Decompress so that we can verify hash down below.
 
@@ -239,24 +222,53 @@ public partial class ContentService
                     }
                     else
                     {
-                        await stream.ReadExactAsync(data, null);
+                        fileLoadingHandler.AppendJob(length);
+                        await stream.ReadExactAsync(data, cancellationToken, blockFileLoadHandle ? null : fileLoadingHandler);
                     }
                 }
                 else
                 {
-                    await stream.ReadExactAsync(data, null);
+                    fileLoadingHandler.AppendJob(length);
+                    await stream.ReadExactAsync(data, cancellationToken, blockFileLoadHandle ? null : fileLoadingHandler);
                 }
 
                 using var fileStream = new MemoryStream(data.ToArray());
-                hashApi.Save(item, fileStream);
+                hashApi.Save(item, fileStream, null);
 
                 _logger.Log("file saved:" + item.Path);
-                loadingHandler.AppendResolvedJob();
+                fileLoadingHandler.Dispose();
+                downloadLoadHandler.AppendResolvedJob();
                 i += 1;
+                
+                if (loadingHandlerFactory is not IConnectionSpeedHandler speedHandler) 
+                    continue;
+
+                if (downloadWatchdog.ElapsedMilliseconds + timeAcc < 1000)
+                {
+                    timeAcc += downloadWatchdog.ElapsedMilliseconds;
+                    lengthAcc += length;
+                    continue;
+                }
+
+                if (timeAcc != 0)
+                {
+                    timeAcc += downloadWatchdog.ElapsedMilliseconds;
+                    lengthAcc += length;
+                    
+                    speedHandler.PasteSpeed((int)(lengthAcc / (timeAcc / 1000)));
+
+                    timeAcc = 0;
+                    lengthAcc = 0;
+                    
+                    continue;
+                }
+                
+                speedHandler.PasteSpeed((int)(length / (downloadWatchdog.ElapsedMilliseconds / 1000)));
             }
         }
         finally
         {
+            downloadLoadHandler.Dispose();
             decompressContext?.Dispose();
             compressContext?.Dispose();
         }

Nebula.Shared/Services/ContentService.Migration.cs

@@ -5,7 +5,7 @@ namespace Nebula.Shared.Services;
 
 public partial class ContentService
 {
-    public bool CheckMigration(ILoadingHandler loadingHandler)
+    public bool CheckMigration(ILoadingHandlerFactory loadingHandler)
     {
         _logger.Log("Checking migration...");
 
@@ -17,16 +17,13 @@ public partial class ContentService
         return true;
     }
 
-    private void DoMigration(ILoadingHandler loadingHandler, List<string> migrationList)
+    private void DoMigration(ILoadingHandlerFactory loadingHandler, List<string> migrationList)
     {
-        loadingHandler.SetJobsCount(migrationList.Count);
+        var mainLoadingHandler = loadingHandler.CreateLoadingContext();
+        mainLoadingHandler.SetJobsCount(migrationList.Count);
         
-        Parallel.ForEach(migrationList, (f,_)=>MigrateFile(f,loadingHandler));
-        
-        if (loadingHandler is IDisposable disposable)
-        {
-            disposable.Dispose();
-        }
+        Parallel.ForEach(migrationList, (f,_)=>MigrateFile(f, mainLoadingHandler) );
+        loadingHandler.Dispose();
     }
 
     private void MigrateFile(string file, ILoadingHandler loadingHandler)

Nebula.Shared/Services/DebugService.cs

@@ -1,7 +1,6 @@
+using System.Collections.Concurrent;
 using System.Reflection;
-using Nebula.Shared.FileApis;
 using Nebula.Shared.Services.Logging;
-using Robust.LoaderApi;
 
 namespace Nebula.Shared.Services;
 
@@ -9,16 +8,23 @@ namespace Nebula.Shared.Services;
 public class DebugService : IDisposable
 {
     public static bool DoFileLog;
-    private ServiceLogger Root {get; set;}
 
     private readonly string _path =
         Path.Combine(FileService.RootPath, "log", Assembly.GetEntryAssembly()?.GetName().Name ?? "App");
-    
+
     public DebugService()
     {
         ClearLog();
-        Root = new ServiceLogger("Root",_path);
-        Root.GetLogger("DebugService").Log("Initializing debug service " + (DoFileLog ? "with file logging" : "without file logging"));
+        Root = new ServiceLogger("Root", _path);
+        Root.GetLogger("DebugService")
+            .Log("Initializing debug service " + (DoFileLog ? "with file logging" : "without file logging"));
+    }
+
+    private ServiceLogger Root { get; }
+
+    public void Dispose()
+    {
+        Root.Dispose();
     }
 
     public ILogger GetLogger(string loggerName)
@@ -31,25 +37,14 @@ public class DebugService : IDisposable
         return Root.GetLogger(objectToLog.GetType().Name);
     }
 
-    public void Dispose()
-    {
-        Root.Dispose();
-    }
-
     private void ClearLog()
     {
-        if(!Directory.Exists(_path)) 
+        if (!Directory.Exists(_path))
             return;
         var di = new DirectoryInfo(_path);
 
-        foreach (var file in di.GetFiles())
-        {
-            file.Delete(); 
-        }
-        foreach (var dir in di.GetDirectories())
-        {
-            dir.Delete(true); 
-        }
+        foreach (var file in di.GetFiles()) file.Delete();
+        foreach (var dir in di.GetDirectories()) dir.Delete(true);
     }
 }
 
@@ -63,101 +58,101 @@ public enum LoggerCategory
 internal class ServiceLogger : ILogger
 {
     private readonly string _directory;
-    public ServiceLogger? Root { get; private set; }
+    private readonly string _path;
+
     public ServiceLogger(string category, string directory)
     {
         _directory = directory;
         Category = category;
 
         if (!DebugService.DoFileLog) return;
-        
-        if(!Directory.Exists(directory)) Directory.CreateDirectory(directory);
+
+        if (!Directory.Exists(directory)) Directory.CreateDirectory(directory);
 
         _path = Path.Combine(directory, $"{Category}.log");
-        
+
         File.Create(_path).Dispose();
     }
 
-    public string Category { get; init; }
-    
-    private Dictionary<string, ServiceLogger> Childs { get; init; } = new();
-    
-    private FileStream? _fileStream;
-    private StreamWriter? _streamWriter;
-    private readonly string _path;
+    public ServiceLogger? Root { get; private set; }
+
+    public string Category { get; init; }
+    private ConcurrentDictionary<string, ServiceLogger> Childs { get; } = new();
 
-    public ServiceLogger GetLogger(string category)
-    {
-        if (Childs.TryGetValue(category, out var logger))
-            return logger;
-        
-        logger = new ServiceLogger(category, _directory);
-        logger.Root = this;
-        Childs.Add(category, logger);
-        return logger;
-    }
-    
     public void Log(LoggerCategory loggerCategory, string message)
     {
-        var output = DebugService.DoFileLog 
+        var output = DebugService.DoFileLog
             ? $"[{DateTime.Now.ToUniversalTime():yyyy-MM-dd HH:mm:ss}][{Enum.GetName(loggerCategory)}][{Category}]: {message}"
             : message;
-        
-        Console.WriteLine(output);
-        
-        LogToFile(output);
-    }
 
-    private void LogToFile(string output)
-    {
-        if(!DebugService.DoFileLog) return;
-        _fileStream = File.Open(_path, FileMode.Append, FileAccess.Write, FileShare.ReadWrite);
-        _streamWriter = new StreamWriter(_fileStream);
-        Root?.LogToFile(output);
-        _streamWriter.WriteLine(output);
-        _streamWriter.Flush();
-        
-        _streamWriter.Dispose();
-        _fileStream.Dispose();
-        
-        _fileStream = null;
-        _streamWriter = null;
+        Console.WriteLine(output);
+
+        LogToFile(output);
     }
 
     public void Dispose()
     {
         if (!DebugService.DoFileLog) return;
-        
-        _streamWriter?.Dispose();
-        _fileStream?.Dispose();
+
         foreach (var (_, child) in Childs)
         {
             child.Dispose();
         }
-        Childs.Clear();
+
+        Childs.Clear(); // Not strictly necessary, but keeps intent clear
+    }
+
+    public ServiceLogger GetLogger(string category)
+    {
+        return Childs.GetOrAdd(category, key =>
+        {
+            var logger = new ServiceLogger(key, _directory)
+            {
+                Root = this
+            };
+            return logger;
+        });
+    }
+
+    private void LogToFile(string output)
+    {
+        if (!DebugService.DoFileLog) return;
+
+        try
+        {
+            Root?.LogToFile(output); // Log to parent first
+
+            using var fileStream = File.Open(_path, FileMode.Append, FileAccess.Write, FileShare.ReadWrite);
+            using var streamWriter = new StreamWriter(fileStream);
+            streamWriter.WriteLine(output);
+        }
+        catch (IOException ex)
+        {
+            Console.WriteLine($"[Logging Error] Failed to write log: {ex.Message}");
+        }
     }
 }
 
 public static class LoggerExtensions
 {
-    public static void Debug(this ILogger logger,string message)
+    public static void Debug(this ILogger logger, string message)
     {
         logger.Log(LoggerCategory.Debug, message);
     }
 
-    public static void Error(this ILogger logger,string message)
+    public static void Error(this ILogger logger, string message)
     {
         logger.Log(LoggerCategory.Error, message);
     }
 
-    public static void Log(this ILogger logger,string message)
+    public static void Log(this ILogger logger, string message)
     {
         logger.Log(LoggerCategory.Log, message);
     }
 
-    public static void Error(this ILogger logger,Exception e)
+    public static void Error(this ILogger logger, Exception e)
     {
-        Error(logger,e.Message + "\r\n" + e.StackTrace);
+        Error(logger, e.Message + "\r\n" + e.StackTrace);
         if (e.InnerException != null)
             Error(logger, e.InnerException);
     }

Nebula.Shared/Services/DotnetResolverService.cs

@@ -1,69 +1,89 @@
-using System.Diagnostics;
 using System.IO.Compression;
 using System.Runtime.InteropServices;
 using System.Text;
+using Nebula.Shared.Utils;
 
 namespace Nebula.Shared.Services;
 
 [ServiceRegister]
 public class DotnetResolverService(DebugService debugService, ConfigurationService configurationService)
 {
-    private HttpClient _httpClient = new HttpClient();
-    
-    private static readonly string FullPath = Path.Join(FileService.RootPath, "dotnet", DotnetUrlHelper.GetRuntimeIdentifier());
+    private static readonly string FullPath =
+        Path.Join(FileService.RootPath, "dotnet", DotnetUrlHelper.GetRuntimeIdentifier());
+
     private static readonly string ExecutePath = Path.Join(FullPath, "dotnet" + DotnetUrlHelper.GetExtension());
-    
-    public async Task<string> EnsureDotnet(){
-        if(!Directory.Exists(FullPath))
+    private readonly HttpClient _httpClient = new();
+
+    public async Task<string> EnsureDotnet()
+    {
+        if (!Directory.Exists(FullPath))
             await Download();
-        
+
         return ExecutePath;
     }
 
-    private async Task Download(){
-        
-        debugService.GetLogger("DotnetResolver").Log($"Downloading dotnet {DotnetUrlHelper.GetRuntimeIdentifier()}...");
-        var ridExt =
-            DotnetUrlHelper.GetCurrentPlatformDotnetUrl(configurationService.GetConfigValue(CurrentConVar.DotnetUrl)!);
-        using var response = await _httpClient.GetAsync(ridExt);
-        using var zipArchive = new ZipArchive(await response.Content.ReadAsStreamAsync());
+    private async Task Download()
+    {
+        var debugLogger = debugService.GetLogger(this);
+        debugLogger.Log($"Downloading dotnet {DotnetUrlHelper.GetRuntimeIdentifier()}...");
+
+        var url = DotnetUrlHelper.GetCurrentPlatformDotnetUrl(
+            configurationService.GetConfigValue(CurrentConVar.DotnetUrl)!
+        );
+
+        using var response = await _httpClient.GetAsync(url);
+        response.EnsureSuccessStatusCode();
+        await using var stream = await response.Content.ReadAsStreamAsync();
+
         Directory.CreateDirectory(FullPath);
-        zipArchive.ExtractToDirectory(FullPath);
-        debugService.GetLogger("DotnetResolver").Log($"Downloading dotnet complete.");
+
+        if (url.EndsWith(".zip", StringComparison.OrdinalIgnoreCase))
+        {
+            using var zipArchive = new ZipArchive(stream);
+            zipArchive.ExtractToDirectory(FullPath, true);
+        }
+        else if (url.EndsWith(".tar.gz", StringComparison.OrdinalIgnoreCase)
+                 || url.EndsWith(".tgz", StringComparison.OrdinalIgnoreCase))
+        {
+            TarUtils.ExtractTarGz(stream, FullPath);
+        }
+        else
+        {
+            throw new NotSupportedException("Unsupported archive format.");
+        }
+
+        debugLogger.Log("Downloading dotnet complete.");
     }
 }
 
 public static class DotnetUrlHelper
 {
+    [Obsolete("FOR TEST USING ONLY!")]
+    public static string? RidOverrideTest = null; // FOR TEST PURPOSES ONLY!!!
+    
     public static string GetExtension()
     {
         if (OperatingSystem.IsWindows()) return ".exe";
         return "";
     }
-    
+
     public static string GetCurrentPlatformDotnetUrl(Dictionary<string, string> dotnetUrl)
     {
-        string? rid = GetRuntimeIdentifier();
+        var rid = GetRuntimeIdentifier();
 
-        if (dotnetUrl.TryGetValue(rid, out var url))
-        {
-            return url;
-        }
+        if (dotnetUrl.TryGetValue(rid, out var url)) return url;
 
         throw new PlatformNotSupportedException($"No download URL available for the current platform: {rid}");
     }
 
     public static string GetRuntimeIdentifier()
     {
+        if(RidOverrideTest != null) return RidOverrideTest;
+        
         if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
-        {
             return Environment.Is64BitProcess ? "win-x64" : "win-x86";
-        }
 
-        if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
-        {
-            return "linux-x64";
-        }
+        if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux)) return "linux-x64";
 
         throw new PlatformNotSupportedException("Unsupported operating system");
     }

Nebula.Shared/Services/EngineService.cs

@@ -1,4 +1,5 @@
 using System.Diagnostics.CodeAnalysis;
+using Nebula.Shared.Configurations;
 using Nebula.Shared.FileApis;
 using Nebula.Shared.FileApis.Interfaces;
 using Nebula.Shared.Models;
@@ -107,11 +108,13 @@ public sealed class EngineService
         return info != null;
     }
 
-    public async Task<AssemblyApi?> EnsureEngine(string version)
+    public async Task<AssemblyApi?> EnsureEngine(string version, ILoadingHandlerFactory loadingHandlerFactory, CancellationToken cancellationToken = default)
     {
         _logger.Log("Ensure engine " + version);
+        using var loadingHandler = loadingHandlerFactory.CreateLoadingContext(new FileLoadingFormater());
+        loadingHandler.SetLoadingMessage("Ensuring engine " + version);
 
-        if (!TryOpen(version)) await DownloadEngine(version);
+        if (!TryOpen(version)) await DownloadEngine(version, loadingHandler, cancellationToken);
 
         try
         {
@@ -127,15 +130,24 @@ public sealed class EngineService
         return null;
     }
 
-    public async Task DownloadEngine(string version)
+    public async Task DownloadEngine(string version, ILoadingHandler loadingHandler, CancellationToken cancellationToken = default)
     {
         if (!TryGetVersionInfo(version, out var info))
             return;
 
         _logger.Log("Downloading engine version " + version);
+        loadingHandler.SetLoadingMessage("Downloading engine version " + version);
+        loadingHandler.Clear();
+        
         using var client = new HttpClient();
-        var s = await client.GetStreamAsync(info.Url);
-        _engineFileApi.Save(version, s);
+        
+        var response = await client.GetAsync(info.Url, cancellationToken);
+        response.EnsureSuccessStatusCode();
+        loadingHandler.SetJobsCount(response.Content.Headers.ContentLength ?? 0);
+        
+        await using var streamContent = await response.Content.ReadAsStreamAsync(cancellationToken);
+        var s = await client.GetStreamAsync(info.Url, cancellationToken);
+        _engineFileApi.Save(version, s, loadingHandler);
         await s.DisposeAsync();
     }
 
@@ -175,7 +187,7 @@ public sealed class EngineService
     {
         GetEngineInfo(out var modulesInfo, out var engineVersionInfo);
 
-        var engineVersionObj = Version.Parse(engineVersion);
+        var engineVersionObj = Version.Parse(engineVersion.Split("-")[0]);
         var module = modulesInfo.Modules[moduleName];
         var selectedVersion = module.Versions.Select(kv => new { Version = Version.Parse(kv.Key), kv.Key, kv })
             .Where(kv => engineVersionObj >= kv.Version)
@@ -186,15 +198,18 @@ public sealed class EngineService
         return selectedVersion.Key;
     }
 
-    public async Task<AssemblyApi?> EnsureEngineModules(string moduleName, string engineVersion)
+    public async Task<AssemblyApi?> EnsureEngineModules(string moduleName, ILoadingHandlerFactory loadingHandlerFactory, string engineVersion)
     {
         var moduleVersion = ResolveModuleVersion(moduleName, engineVersion);
         if (!TryGetModuleBuildInfo(moduleName, moduleVersion, out var buildInfo))
             return null;
 
         var fileName = ConcatName(moduleName, moduleVersion);
+        
+        using var loadingHandler = loadingHandlerFactory.CreateLoadingContext(new FileLoadingFormater());
+        loadingHandler.SetLoadingMessage("Ensuring engine module " + fileName);
 
-        if (!TryOpen(fileName)) await DownloadEngineModule(moduleName, moduleVersion);
+        if (!TryOpen(fileName)) await DownloadEngineModule(moduleName, loadingHandler, moduleVersion);
 
         try
         {
@@ -209,19 +224,20 @@ public sealed class EngineService
         }
     }
 
-    public async Task DownloadEngineModule(string moduleName, string moduleVersion)
+    public async Task DownloadEngineModule(string moduleName, ILoadingHandler loadingHandler, string moduleVersion)
     {
         if (!TryGetModuleBuildInfo(moduleName, moduleVersion, out var info))
             return;
 
         _logger.Log("Downloading engine module version " + moduleVersion);
+        loadingHandler.SetLoadingMessage("Downloading engine module version " + moduleVersion);
         using var client = new HttpClient();
         var s = await client.GetStreamAsync(info.Url);
-        _engineFileApi.Save(ConcatName(moduleName, moduleVersion), s);
+        _engineFileApi.Save(ConcatName(moduleName, moduleVersion), s, loadingHandler);
         await s.DisposeAsync();
     }
 
-    public string ConcatName(string moduleName, string moduleVersion)
+    private string ConcatName(string moduleName, string moduleVersion)
     {
         return moduleName + "" + moduleVersion;
     }

Nebula.Shared/Services/FileService.cs

@@ -89,14 +89,26 @@ public class FileService
     }
 }
 
+public sealed class ConsoleLoadingHandlerFactory : ILoadingHandlerFactory
+{
+    public ILoadingHandler CreateLoadingContext(ILoadingFormater? loadingFormater = null)
+    {
+        return new ConsoleLoadingHandler();
+    }
+
+    public void Dispose()
+    {
+    }
+}
+
 public sealed class ConsoleLoadingHandler : ILoadingHandler
 {
-    private int _currJobs;
+    private long _currJobs;
 
     private float _percent;
-    private int _resolvedJobs;
+    private long _resolvedJobs;
 
-    public void SetJobsCount(int count)
+    public void SetJobsCount(long count)
     {
         _currJobs = count;
 
@@ -104,12 +116,12 @@ public sealed class ConsoleLoadingHandler : ILoadingHandler
         Draw();
     }
 
-    public int GetJobsCount()
+    public long GetJobsCount()
     {
         return _currJobs;
     }
 
-    public void SetResolvedJobsCount(int count)
+    public void SetResolvedJobsCount(long count)
     {
         _resolvedJobs = count;
 
@@ -117,7 +129,7 @@ public sealed class ConsoleLoadingHandler : ILoadingHandler
         Draw();
     }
 
-    public int GetResolvedJobsCount()
+    public long GetResolvedJobsCount()
     {
         return _resolvedJobs;
     }
@@ -154,4 +166,9 @@ public sealed class ConsoleLoadingHandler : ILoadingHandler
 
         Console.Write($"\t {_resolvedJobs}/{_currJobs}");
     }
+
+    public void Dispose()
+    {
+        
+    }
 }

Nebula.Shared/Services/RestService.cs

@@ -29,10 +29,37 @@ public class RestService
     [Pure]
     public async Task<T> GetAsync<T>(Uri uri, CancellationToken cancellationToken) where T : notnull
     {
-        var response = await _client.GetAsync(uri, cancellationToken);
+        var httpRequestMessage = new HttpRequestMessage(HttpMethod.Get, uri);
+        
+        var response = await _client.SendAsync(httpRequestMessage, cancellationToken).ConfigureAwait(false);
+        return await ReadResult<T>(response, cancellationToken, uri);
+    }
+    
+    public async Task<K> PostAsync<K, T>(T information, Uri uri, CancellationToken cancellationToken) where K : notnull
+    {
+        var json = JsonSerializer.Serialize(information, _serializerOptions);
+        var content = new StringContent(json, Encoding.UTF8, "application/json");
+        var response = await _client.PostAsync(uri, content, cancellationToken);
+        return await ReadResult<K>(response, cancellationToken, uri);
+    }
+
+    [Pure]
+    public async Task<T> PostAsync<T>(Stream stream, string fileName, Uri uri, CancellationToken cancellationToken) where T : notnull
+    {
+        using var multipartFormContent =
+            new MultipartFormDataContent("Upload----" + DateTime.Now.ToString(CultureInfo.InvariantCulture));
+        multipartFormContent.Add(new StreamContent(stream), "formFile", fileName);
+        var response = await _client.PostAsync(uri, multipartFormContent, cancellationToken);
         return await ReadResult<T>(response, cancellationToken, uri);
     }
 
+    [Pure]
+    public async Task<T> DeleteAsync<T>(Uri uri, CancellationToken cancellationToken) where T : notnull
+    {
+        var response = await _client.DeleteAsync(uri, cancellationToken);
+        return await ReadResult<T>(response, cancellationToken, uri);
+    }
+    
     [Pure]
     public async Task<T> GetAsyncDefault<T>(Uri uri, T defaultValue, CancellationToken cancellationToken) where T : notnull
     {
@@ -47,51 +74,42 @@ public class RestService
         }
     }
 
-    [Pure]
-    public async Task<K> PostAsync<K, T>(T information, Uri uri, CancellationToken cancellationToken) where K : notnull
-    {
-        var json = JsonSerializer.Serialize(information, _serializerOptions);
-        var content = new StringContent(json, Encoding.UTF8, "application/json");
-        var response = await _client.PostAsync(uri, content, cancellationToken);
-        return await ReadResult<K>(response, cancellationToken, uri);
-    }
-
-    [Pure]
-    public async Task<T> PostAsync<T>(Stream stream, Uri uri, CancellationToken cancellationToken) where T : notnull
-    {
-        using var multipartFormContent =
-            new MultipartFormDataContent("Upload----" + DateTime.Now.ToString(CultureInfo.InvariantCulture));
-        multipartFormContent.Add(new StreamContent(stream), "formFile", "image.png");
-        var response = await _client.PostAsync(uri, multipartFormContent, cancellationToken);
-        return await ReadResult<T>(response, cancellationToken, uri);
-    }
-
-    [Pure]
-    public async Task<T> DeleteAsync<T>(Uri uri, CancellationToken cancellationToken) where T : notnull
-    {
-        var response = await _client.DeleteAsync(uri, cancellationToken);
-        return await ReadResult<T>(response, cancellationToken, uri);
-    }
-
     [Pure]
     private async Task<T> ReadResult<T>(HttpResponseMessage response, CancellationToken cancellationToken, Uri uri) where T : notnull
     {
-        var content = await response.Content.ReadAsStringAsync(cancellationToken);
+        if (typeof(T) == typeof(NullResponse) && new NullResponse() is T nullResponse)
+        {
+            return nullResponse;
+        }
         
-        if (typeof(T) == typeof(string) && content is T t)
+        if (typeof(T) == typeof(string) && await response.Content.ReadAsStringAsync(cancellationToken) is T t)
             return t;
         
         if (response.IsSuccessStatusCode)
         {
-            return await response.Content.AsJson<T>();
+            var data = await response.Content.AsJson<T>();
+            response.Dispose();
+            return data;
         }
+
+        var ex = new RestRequestException(response.Content, response.StatusCode,
+            $"Error while processing {uri.ToString()}: {response.ReasonPhrase}");
         
-        throw new RestRequestException(response.Content, response.StatusCode, $"Error while processing {uri.ToString()}: {response.ReasonPhrase}");
+        throw ex;
     }
 }
 
-public sealed class RestRequestException(HttpContent content, HttpStatusCode statusCode, string message) : Exception(message)
+public sealed class NullResponse
+{
+}
+
+public sealed class RestRequestException(HttpContent content, HttpStatusCode statusCode, string message) : Exception(message), IDisposable
 {
     public HttpStatusCode StatusCode { get; } = statusCode;
     public HttpContent Content { get; } = content;
+
+    public void Dispose()
+    {
+        Content.Dispose();
+    }
 }

Nebula.Shared/Utils/BandwidthStream.cs

@@ -1,138 +0,0 @@
-using System.Diagnostics;
-
-namespace Nebula.Shared.Utils;
-
-public sealed class BandwidthStream : Stream
-{
-    private const int NumSeconds = 8;
-    private const int BucketDivisor = 2;
-    private const int BucketsPerSecond = 2 << BucketDivisor;
-
-    // TotalBuckets MUST be power of two!
-    private const int TotalBuckets = NumSeconds * BucketsPerSecond;
-    private readonly Stream _baseStream;
-    private readonly long[] _buckets;
-
-    private readonly Stopwatch _stopwatch;
-
-    private long _bucketIndex;
-
-    public BandwidthStream(Stream baseStream)
-    {
-        _stopwatch = Stopwatch.StartNew();
-        _baseStream = baseStream;
-        _buckets = new long[TotalBuckets];
-    }
-
-    public override bool CanRead => _baseStream.CanRead;
-
-    public override bool CanSeek => _baseStream.CanSeek;
-
-    public override bool CanWrite => _baseStream.CanWrite;
-
-    public override long Length => _baseStream.Length;
-
-    public override long Position
-    {
-        get => _baseStream.Position;
-        set => _baseStream.Position = value;
-    }
-
-    private void TrackBandwidth(long value)
-    {
-        const int bucketMask = TotalBuckets - 1;
-
-        var bucketIdx = CurBucketIdx();
-
-        // Increment to bucket idx, clearing along the way.
-        if (bucketIdx != _bucketIndex)
-        {
-            var diff = bucketIdx - _bucketIndex;
-            if (diff > TotalBuckets)
-                for (var i = _bucketIndex; i < bucketIdx; i++)
-                    _buckets[i & bucketMask] = 0;
-            else
-                // We managed to skip so much time the whole buffer is empty.
-                Array.Clear(_buckets);
-
-            _bucketIndex = bucketIdx;
-        }
-
-        // Write value.
-        _buckets[bucketIdx & bucketMask] += value;
-    }
-
-    private long CurBucketIdx()
-    {
-        var elapsed = _stopwatch.Elapsed.TotalSeconds;
-        return (long)(elapsed / BucketsPerSecond);
-    }
-
-    public long CalcCurrentAvg()
-    {
-        var sum = 0L;
-
-        for (var i = 0; i < TotalBuckets; i++) sum += _buckets[i];
-
-        return sum >> BucketDivisor;
-    }
-
-    public override void Flush()
-    {
-        _baseStream.Flush();
-    }
-
-    public override Task FlushAsync(CancellationToken cancellationToken)
-    {
-        return _baseStream.FlushAsync(cancellationToken);
-    }
-
-    protected override void Dispose(bool disposing)
-    {
-        if (disposing)
-            _baseStream.Dispose();
-    }
-
-    public override ValueTask DisposeAsync()
-    {
-        return _baseStream.DisposeAsync();
-    }
-
-    public override int Read(byte[] buffer, int offset, int count)
-    {
-        var read = _baseStream.Read(buffer, offset, count);
-        TrackBandwidth(read);
-        return read;
-    }
-
-    public override async ValueTask<int> ReadAsync(Memory<byte> buffer, CancellationToken cancellationToken = default)
-    {
-        var read = await base.ReadAsync(buffer, cancellationToken);
-        TrackBandwidth(read);
-        return read;
-    }
-
-    public override long Seek(long offset, SeekOrigin origin)
-    {
-        return _baseStream.Seek(offset, origin);
-    }
-
-    public override void SetLength(long value)
-    {
-        _baseStream.SetLength(value);
-    }
-
-    public override void Write(byte[] buffer, int offset, int count)
-    {
-        _baseStream.Write(buffer, offset, count);
-        TrackBandwidth(count);
-    }
-
-    public override async ValueTask WriteAsync(
-        ReadOnlyMemory<byte> buffer,
-        CancellationToken cancellationToken = default)
-    {
-        await _baseStream.WriteAsync(buffer, cancellationToken);
-        TrackBandwidth(buffer.Length);
-    }
-}

Nebula.Shared/Utils/ContentManifestParser.cs

@@ -0,0 +1,43 @@
+namespace Nebula.Shared.Utils;
+
+public static class ContentManifestParser
+{
+    public static List<string> ExtractModules(Stream manifestStream)
+    {
+        using var reader = new StreamReader(manifestStream);
+        return ExtractModules(reader.ReadToEnd());
+    }
+    
+    public static List<string> ExtractModules(string manifestContent)
+    {
+        var modules = new List<string>();
+        var lines = manifestContent.Split(new[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries);
+
+        bool inModulesSection = false;
+
+        foreach (var rawLine in lines)
+        {
+            var line = rawLine.Trim();
+
+            if (line.StartsWith("modules:"))
+            {
+                inModulesSection = true;
+                continue;
+            }
+
+            if (inModulesSection)
+            {
+                if (line.StartsWith("- "))
+                {
+                    modules.Add(line.Substring(2).Trim());
+                }
+                else if (!line.StartsWith(" "))
+                {
+                    break;
+                }
+            }
+        }
+
+        return modules;
+    }
+}

Nebula.Shared/Utils/CryptographicStore.cs

@@ -0,0 +1,82 @@
+using System.Security.Cryptography;
+using System.Text;
+using System.Text.Json;
+using System.Text.Unicode;
+
+namespace Nebula.Shared.Utils;
+
+public static class CryptographicStore
+{
+   public static string Encrypt(object value, byte[] key)
+   {
+      using var memoryStream = new MemoryStream();
+      using var aes = Aes.Create();
+      aes.Key = key;
+
+      var iv = aes.IV;
+      memoryStream.Write(iv, 0, iv.Length);
+      
+      var serializedData = JsonSerializer.Serialize(value);
+
+      using CryptoStream cryptoStream = new(
+         memoryStream,
+         aes.CreateEncryptor(),
+         CryptoStreamMode.Write);
+      
+      using(StreamWriter encryptWriter = new(cryptoStream))
+      {
+         encryptWriter.WriteLine(serializedData);
+      }
+      
+      return Convert.ToBase64String(memoryStream.ToArray());
+   }
+
+   public static async Task<T> Decrypt<T>(string base64EncryptedValue, byte[] key)
+   {
+      using var memoryStream = new MemoryStream(Convert.FromBase64String(base64EncryptedValue));
+      using var aes = Aes.Create();
+      
+      var iv = new byte[aes.IV.Length];
+      var numBytesToRead = aes.IV.Length;
+      var numBytesRead = 0;
+      while (numBytesToRead > 0)
+      {
+         var n = memoryStream.Read(iv, numBytesRead, numBytesToRead);
+         if (n == 0) break;
+
+         numBytesRead += n;
+         numBytesToRead -= n;
+      }
+
+
+      await using CryptoStream cryptoStream = new(
+         memoryStream,
+         aes.CreateDecryptor(key, iv),
+         CryptoStreamMode.Read);
+
+      using StreamReader decryptReader = new(cryptoStream);
+      var decryptedMessage = await decryptReader.ReadToEndAsync();
+      return JsonSerializer.Deserialize<T>(decryptedMessage) ?? throw new InvalidOperationException();
+   }
+
+   public static byte[] GetKey(string input, int keySize = 256)
+   {
+      if (string.IsNullOrEmpty(input))
+         throw new ArgumentException("Input string cannot be null or empty.", nameof(input));
+
+      var salt = Encoding.UTF8.GetBytes(input);
+      
+      using (var deriveBytes = new Rfc2898DeriveBytes(input, salt, 100_000, HashAlgorithmName.SHA256))
+      {
+         return deriveBytes.GetBytes(keySize / 8);
+      }
+   }
+
+   public static byte[] GetComputerKey(int keySize = 256)
+   {
+      var name = Environment.UserName;
+      if (string.IsNullOrEmpty(name))
+         name = "LinuxUser";
+      return GetKey(name, keySize);
+   }
+}

Nebula.Shared/Utils/ExceptionHelper.cs

@@ -0,0 +1,19 @@
+namespace Nebula.Shared.Utils;
+
+public static class ExceptionHelper
+{
+    public static Task<T> TryRun<T>(Func<Task<T>> func, int attempts = 3, Action<int, Exception>? attemptsCallback = null)
+    {
+        try
+        {
+            return func.Invoke();
+        }
+        catch (Exception e)
+        {
+            if (attempts <= 0) throw new("Attempts was expired! ", e);
+            attempts--;
+            attemptsCallback?.Invoke(attempts, e);
+            return TryRun(func, attempts);
+        }
+    }
+}

Nebula.Shared/Utils/StreamHelper.cs

@@ -1,21 +1,37 @@
 using System.Buffers;
+using Nebula.Shared.Models;
 
 namespace Nebula.Shared.Utils;
 
 public static class StreamHelper
 {
-    public static async ValueTask<byte[]> ReadExactAsync(this Stream stream, int amount, CancellationToken? cancel)
+    public static void CopyTo(this Stream input, Stream output, ILoadingHandler loadingHandler)
+    {
+        const int bufferSize = 81920;
+        var buffer = new byte[bufferSize];
+
+        int bytesRead;
+        while ((bytesRead = input.Read(buffer, 0, buffer.Length)) > 0)
+        {
+            output.Write(buffer, 0, bytesRead);
+            loadingHandler.AppendResolvedJob(bytesRead);
+        }
+    }
+    
+    public static async ValueTask<byte[]> ReadExactAsync(this Stream stream, int amount, CancellationToken cancel = default)
     {
         var data = new byte[amount];
         await ReadExactAsync(stream, data, cancel);
         return data;
     }
 
-    public static async ValueTask ReadExactAsync(this Stream stream, Memory<byte> into, CancellationToken? cancel)
+    public static async ValueTask ReadExactAsync(this Stream stream, Memory<byte> into, CancellationToken cancel  = default, ILoadingHandler? loadingHandler = null)
     {
         while (into.Length > 0)
         {
-            var read = await stream.ReadAsync(into);
+            var read = await stream.ReadAsync(into, cancel);
+            
+            loadingHandler?.AppendResolvedJob(read);
 
             // Check EOF.
             if (read == 0)
@@ -24,31 +40,4 @@ public static class StreamHelper
             into = into[read..];
         }
     }
-
-    public static async Task CopyAmountToAsync(
-        this Stream stream,
-        Stream to,
-        int amount,
-        int bufferSize,
-        CancellationToken cancel)
-    {
-        var buffer = ArrayPool<byte>.Shared.Rent(bufferSize);
-
-        while (amount > 0)
-        {
-            Memory<byte> readInto = buffer;
-            if (amount < readInto.Length)
-                readInto = readInto[..amount];
-
-            var read = await stream.ReadAsync(readInto, cancel);
-            if (read == 0)
-                throw new EndOfStreamException();
-
-            amount -= read;
-
-            readInto = readInto[..read];
-
-            await to.WriteAsync(readInto, cancel);
-        }
-    }
 }

Nebula.Shared/Utils/TarUtils.cs

@@ -0,0 +1,393 @@
+using System.IO.Compression;
+using System.Text;
+
+namespace Nebula.Shared.Utils;
+
+public static class TarUtils
+{
+    public static void ExtractTarGz(Stream stream, string destinationDirectory)
+    {
+        if (destinationDirectory == null) throw new ArgumentNullException(nameof(destinationDirectory));
+        
+        using (var gzs = new GZipStream(stream, CompressionMode.Decompress, leaveOpen: false))
+        {
+            // GZipStream does not expose length, so just pass as streaming source
+            TarExtractor.ExtractTar(gzs, destinationDirectory);
+        }
+    }
+}
+
+public static class TarExtractor
+{
+    private const int BlockSize = 512;
+
+    public static void ExtractTar(Stream tarStream, string destinationDirectory)
+    {
+        if (tarStream == null) throw new ArgumentNullException(nameof(tarStream));
+        if (destinationDirectory == null) throw new ArgumentNullException(nameof(destinationDirectory));
+
+        Directory.CreateDirectory(destinationDirectory);
+
+        string pendingLongName = null;
+        string pendingLongLink = null;
+
+        var block = new byte[BlockSize];
+        var zeroBlockCount = 0;
+
+        while (true)
+        {
+            var read = ReadExactly(tarStream, block, 0, BlockSize);
+            if (read == 0)
+                break;
+
+            if (IsAllZero(block))
+            {
+                zeroBlockCount++;
+                if (zeroBlockCount >= 2) break; // two consecutive zero blocks -> end of archive
+                continue;
+            }
+
+            zeroBlockCount = 0;
+
+            var header = TarHeader.FromBlock(block);
+
+            // validate header checksum (best-effort)
+            if (!header.IsValidChecksum(block))
+            {
+                // Not fatal, but warn (we're not writing warnings to console by default).
+            }
+
+            // Some tar implementations supply the long filename in a preceding entry whose typeflag is 'L'.
+            // If present, use that name for the following file.
+            if (header.TypeFlag == 'L') // GNU long name
+            {
+                // read content blocks with size header.Size
+                var size = header.Size;
+                var nameBytes = new byte[size];
+                ReadExactly(tarStream, nameBytes, 0, (int)size);
+                // skip padding to full 512 block
+                SkipPadding(tarStream, size);
+                pendingLongName = ReadNullTerminatedString(nameBytes);
+                continue;
+            }
+
+            if (header.TypeFlag == 'K') // GNU long linkname
+            {
+                var size = header.Size;
+                var linkBytes = new byte[size];
+                ReadExactly(tarStream, linkBytes, 0, (int)size);
+                SkipPadding(tarStream, size);
+                pendingLongLink = ReadNullTerminatedString(linkBytes);
+                continue;
+            }
+
+            // Determine final name
+            var entryName = !string.IsNullOrEmpty(pendingLongName) ? pendingLongName : header.GetName();
+            var entryLinkName = !string.IsNullOrEmpty(pendingLongLink) ? pendingLongLink : header.LinkName;
+
+            // reset pending longs after use
+            pendingLongName = null;
+            pendingLongLink = null;
+
+            // sanitize path separators and avoid absolute paths
+            entryName = entryName.Replace('\\', Path.DirectorySeparatorChar).Replace('/', Path.DirectorySeparatorChar)
+                .TrimStart(Path.DirectorySeparatorChar);
+
+            var targetPath = Path.Combine(destinationDirectory, entryName);
+
+            switch (header.TypeFlag)
+            {
+                case '0':
+                case '\0': // normal file
+                case '7': // regular file (SUSv4)
+                    EnsureParentDirectoryExists(targetPath);
+                    using (var outFile = File.Open(targetPath, FileMode.Create, FileAccess.Write))
+                    {
+                        CopyExact(tarStream, outFile, header.Size);
+                    }
+
+                    SkipPadding(tarStream, header.Size);
+                    TrySetTimes(targetPath, header.ModTime);
+                    break;
+
+                case '5': // directory
+                    Directory.CreateDirectory(targetPath);
+                    TrySetTimes(targetPath, header.ModTime);
+                    break;
+
+                case '2': // symlink
+                    // Creating symlinks require privileges on Windows and may fail.
+                    // To keep things robust across platforms, write a small .symlink-info file for Windows fallback,
+                    // and attempt real symlink creation on Unix-like platforms.
+                    EnsureParentDirectoryExists(targetPath);
+                    TryCreateSymlink(entryLinkName, targetPath);
+                    break;
+
+                case '1': // hard link - we will try to create by copying if target exists; otherwise skip
+                    var linkTargetPath = Path.Combine(destinationDirectory,
+                        entryLinkName.Replace('/', Path.DirectorySeparatorChar));
+                    if (File.Exists(linkTargetPath))
+                    {
+                        EnsureParentDirectoryExists(targetPath);
+                        File.Copy(linkTargetPath, targetPath, true);
+                    }
+
+                    break;
+
+                case '3': // character device - skip
+                case '4': // block device - skip
+                case '6': // contiguous file - treat as regular
+                    // To be safe, treat as file if size > 0
+                    if (header.Size > 0)
+                    {
+                        EnsureParentDirectoryExists(targetPath);
+                        using (var outFile = File.Open(targetPath, FileMode.Create, FileAccess.Write))
+                        {
+                            CopyExact(tarStream, outFile, header.Size);
+                        }
+
+                        SkipPadding(tarStream, header.Size);
+                        TrySetTimes(targetPath, header.ModTime);
+                    }
+
+                    break;
+
+                default:
+                    // Unknown type - skip the file data
+                    if (header.Size > 0)
+                    {
+                        Skip(tarStream, header.Size);
+                        SkipPadding(tarStream, header.Size);
+                    }
+
+                    break;
+            }
+        }
+    }
+
+    private static void TryCreateSymlink(string linkTarget, string symlinkPath)
+    {
+        try
+        {
+            // On Unix-like systems we can try to create a symlink
+            if (IsWindows())
+            {
+                // don't try symlinks on Windows by default - write a .symlink-info file instead
+                File.WriteAllText(symlinkPath + ".symlink-info", $"symlink -> {linkTarget}");
+            }
+            else
+            {
+                // Unix: use symlink
+                var dir = Path.GetDirectoryName(symlinkPath);
+                if (!string.IsNullOrEmpty(dir)) Directory.CreateDirectory(dir);
+                // Use native syscall via Mono.Posix? Not allowed. Fall back to invoking 'ln -s' is not allowed.
+                // Instead use System.IO.File.CreateSymbolicLink if available (net core 2.1+)
+#if NETCOREAPP2_1_OR_GREATER || NET5_0_OR_GREATER
+                var sym = new FileInfo(symlinkPath);
+                sym.CreateAsSymbolicLink(linkTarget);
+#else
+                // If unavailable, write a .symlink-info file.
+                File.WriteAllText(symlinkPath + ".symlink-info", $"symlink -> {linkTarget}");
+#endif
+            }
+        }
+        catch
+        {
+            // Ignore failures to create symlink; write fallback info
+            try
+            {
+                File.WriteAllText(symlinkPath + ".symlink-info", $"symlink -> {linkTarget}");
+            }
+            catch
+            {
+            }
+        }
+    }
+
+    private static bool IsWindows()
+    {
+        return Path.DirectorySeparatorChar == '\\';
+    }
+
+    private static void TrySetTimes(string path, DateTimeOffset modTime)
+    {
+        try
+        {
+            var dt = modTime.UtcDateTime;
+            // convert to local to set file time sensibly
+            File.SetLastWriteTimeUtc(path, dt);
+        }
+        catch
+        {
+            /* best-effort */
+        }
+    }
+
+    private static void EnsureParentDirectoryExists(string path)
+    {
+        var dir = Path.GetDirectoryName(path);
+        if (!string.IsNullOrEmpty(dir) && !Directory.Exists(dir))
+            Directory.CreateDirectory(dir);
+    }
+
+    // Read exactly count bytes or throw if cannot
+    private static int ReadExactly(Stream s, byte[] buffer, int offset, int count)
+    {
+        var total = 0;
+        while (total < count)
+        {
+            var r = s.Read(buffer, offset + total, count - total);
+            if (r == 0) break;
+            total += r;
+        }
+
+        return total;
+    }
+
+    // Skip count bytes by reading and discarding
+    private static void Skip(Stream s, long count)
+    {
+        var tmp = new byte[8192];
+        var remaining = count;
+        while (remaining > 0)
+        {
+            var toRead = (int)Math.Min(tmp.Length, remaining);
+            var r = s.Read(tmp, 0, toRead);
+            if (r == 0) break;
+            remaining -= r;
+        }
+    }
+
+    private static void CopyExact(Stream source, Stream dest, long count)
+    {
+        var buf = new byte[8192];
+        var remaining = count;
+        while (remaining > 0)
+        {
+            var toRead = (int)Math.Min(buf.Length, remaining);
+            var r = source.Read(buf, 0, toRead);
+            if (r == 0) break;
+            dest.Write(buf, 0, r);
+            remaining -= r;
+        }
+    }
+
+    private static void SkipPadding(Stream s, long size)
+    {
+        var pad = (BlockSize - size % BlockSize) % BlockSize;
+        if (pad > 0) Skip(s, pad);
+    }
+
+    private static bool IsAllZero(byte[] block)
+    {
+        for (var i = 0; i < block.Length; i++)
+            if (block[i] != 0)
+                return false;
+        return true;
+    }
+
+    private static string ReadNullTerminatedString(byte[] bytes)
+    {
+        var len = 0;
+        while (len < bytes.Length && bytes[len] != 0) len++;
+        return Encoding.UTF8.GetString(bytes, 0, len);
+    }
+
+    private class TarHeader
+    {
+        public string Name { get; private set; }
+        public int Mode { get; private set; }
+        public int Uid { get; private set; }
+        public int Gid { get; private set; }
+        public long Size { get; private set; }
+        public DateTimeOffset ModTime { get; private set; }
+        public int Checksum { get; private set; }
+        public char TypeFlag { get; private set; }
+        public string LinkName { get; private set; }
+        public string Magic { get; private set; }
+        public string Version { get; private set; }
+        public string UName { get; private set; }
+        public string GName { get; private set; }
+        public string DevMajor { get; private set; }
+        public string DevMinor { get; private set; }
+        public string Prefix { get; private set; }
+
+        public static TarHeader FromBlock(byte[] block)
+        {
+            var h = new TarHeader();
+            h.Name = ReadString(block, 0, 100);
+            h.Mode = (int)ReadOctal(block, 100, 8);
+            h.Uid = (int)ReadOctal(block, 108, 8);
+            h.Gid = (int)ReadOctal(block, 116, 8);
+            h.Size = ReadOctal(block, 124, 12);
+            var mtime = ReadOctal(block, 136, 12);
+            h.ModTime = DateTimeOffset.FromUnixTimeSeconds(mtime);
+            h.Checksum = (int)ReadOctal(block, 148, 8);
+            h.TypeFlag = (char)block[156];
+            h.LinkName = ReadString(block, 157, 100);
+            h.Magic = ReadString(block, 257, 6);
+            h.Version = ReadString(block, 263, 2);
+            h.UName = ReadString(block, 265, 32);
+            h.GName = ReadString(block, 297, 32);
+            h.DevMajor = ReadString(block, 329, 8);
+            h.DevMinor = ReadString(block, 337, 8);
+            h.Prefix = ReadString(block, 345, 155);
+
+            return h;
+        }
+
+        public string GetName()
+        {
+            if (!string.IsNullOrEmpty(Prefix))
+                return $"{Prefix}/{Name}".Trim('/');
+            return Name;
+        }
+
+        public bool IsValidChecksum(byte[] block)
+        {
+            // compute checksum where checksum field (148..155) is spaces (0x20)
+            long sum = 0;
+            for (var i = 0; i < block.Length; i++)
+                if (i >= 148 && i < 156) sum += 32; // space
+                else sum += block[i];
+
+            // stored checksum could be octal until null
+            var stored = Checksum;
+            return Math.Abs(sum - stored) <= 1; // allow +/-1 tolerance
+        }
+
+        private static string ReadString(byte[] buf, int offset, int length)
+        {
+            var end = offset;
+            var max = offset + length;
+            while (end < max && buf[end] != 0) end++;
+            if (end == offset) return string.Empty;
+            return Encoding.ASCII.GetString(buf, offset, end - offset);
+        }
+
+        private static long ReadOctal(byte[] buf, int offset, int length)
+        {
+            // Many tars store as ASCII octal, possibly padded with nulls or spaces.
+            var end = offset + length;
+            var i = offset;
+            // skip leading spaces and nulls
+            while (i < end && (buf[i] == 0 || buf[i] == (byte)' ')) i++;
+            long val = 0;
+            var found = false;
+            for (; i < end; i++)
+            {
+                var b = buf[i];
+                if (b == 0 || b == (byte)' ') break;
+                if (b >= (byte)'0' && b <= (byte)'7')
+                {
+                    found = true;
+                    val = (val << 3) + (b - (byte)'0');
+                }
+                // some implementations use base-10 ascii or binary; ignore invalid chars
+            }
+
+            if (!found) return 0;
+            return val;
+        }
+    }
+}

Nebula.UnitTest/NebulaSharedTests/ConfigurationServiceTests.cs

@@ -1,4 +1,5 @@
 using Microsoft.Extensions.DependencyInjection;
+using Nebula.Shared.Configurations;
 using Nebula.Shared.Services;
 
 namespace Nebula.UnitTest.NebulaSharedTests;

Nebula.UnitTest/NebulaSharedTests/CryptographicTest.cs

@@ -0,0 +1,24 @@
+using Nebula.Shared.Utils;
+
+namespace Nebula.UnitTest.NebulaSharedTests;
+
+[TestFixture]
+[TestOf(typeof(CryptographicStore))]
+public class CryptographicTest
+{
+    [Test]
+    public async Task EncryptDecrypt()
+    {
+        var key = CryptographicStore.GetComputerKey();
+        Console.WriteLine($"Key: {Convert.ToBase64String(key)}");
+        var entry = new TestEncryptEntry("Hello", "World");
+        Console.WriteLine($"Raw data: {entry}");
+        var encrypt = CryptographicStore.Encrypt(entry, key);
+        Console.WriteLine($"Encrypted data: {encrypt}");
+        var decrypt = await CryptographicStore.Decrypt<TestEncryptEntry>(encrypt, key);
+        Console.WriteLine($"Decrypted data: {decrypt}");
+        Assert.That(decrypt, Is.EqualTo(entry));
+    }
+}
+
+public record struct TestEncryptEntry(string Key, string Value);

Nebula.UnitTest/NebulaSharedTests/TarTest.cs

@@ -0,0 +1,64 @@
+using System.IO.Compression;
+using Microsoft.Extensions.DependencyInjection;
+using Nebula.Shared;
+using Nebula.Shared.Services;
+using Nebula.Shared.Services.Logging;
+using Nebula.Shared.Utils;
+
+namespace Nebula.UnitTest.NebulaSharedTests;
+
+[TestFixture]
+[TestOf(typeof(DotnetResolverService))]
+public class TarTest : BaseSharedTest
+{
+    private FileService _fileService = default!;
+    private ConfigurationService _configurationService = default!;
+    private readonly HttpClient _httpClient = new();
+    
+    public override void BeforeServiceBuild(IServiceCollection services)
+    {
+        TestServiceHelper.InitFileServiceTest();
+    }
+    
+    [SetUp]
+    public override void Setup()
+    {
+        base.Setup();
+        _fileService = _sharedUnit.GetService<FileService>();
+        _configurationService = _sharedUnit.GetService<ConfigurationService>();
+    }
+    
+    [Test]
+    public async Task DownloadTarAndUnzipTest()
+    {
+        DotnetUrlHelper.RidOverrideTest = "linux-x64";
+        Console.WriteLine($"Downloading dotnet {DotnetUrlHelper.GetRuntimeIdentifier()}...");
+
+        var url = DotnetUrlHelper.GetCurrentPlatformDotnetUrl(
+            _configurationService.GetConfigValue(CurrentConVar.DotnetUrl)!
+        );
+
+        using var response = await _httpClient.GetAsync(url);
+        response.EnsureSuccessStatusCode();
+        await using var stream = await response.Content.ReadAsStreamAsync();
+
+        Directory.CreateDirectory(FileService.RootPath);
+
+        if (url.EndsWith(".zip", StringComparison.OrdinalIgnoreCase))
+        {
+            using var zipArchive = new ZipArchive(stream);
+            zipArchive.ExtractToDirectory(FileService.RootPath, true);
+        }
+        else if (url.EndsWith(".tar.gz", StringComparison.OrdinalIgnoreCase)
+                 || url.EndsWith(".tgz", StringComparison.OrdinalIgnoreCase))
+        {
+            TarUtils.ExtractTarGz(stream, FileService.RootPath);
+        }
+        else
+        {
+            throw new NotSupportedException("Unsupported archive format.");
+        }
+
+        Console.WriteLine("Downloading dotnet complete.");
+    }
+}

Nebula.UpdateResolver/App.axaml.cs

@@ -1,4 +1,5 @@
 using Avalonia;
+using Avalonia.Controls;
 using Avalonia.Controls.ApplicationLifetimes;
 using Avalonia.Markup.Xaml;
 
@@ -13,8 +14,6 @@ public partial class App : Application
 
     public override void OnFrameworkInitializationCompleted()
     {
-     
-        
         if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
         {
             desktop.MainWindow = new MainWindow();

Nebula.UpdateResolver/DotnetStandalone.cs

@@ -13,15 +13,17 @@ namespace Nebula.UpdateResolver;
 
 public static class DotnetStandalone
 {
-    private static readonly HttpClient HttpClient = new HttpClient();
+    private static readonly HttpClient HttpClient = new();
+
+    private static readonly string FullPath =
+        Path.Join(MainWindow.RootPath, "dotnet", DotnetUrlHelper.GetRuntimeIdentifier());
 
-    private static readonly string FullPath = Path.Join(MainWindow.RootPath, "dotnet", DotnetUrlHelper.GetRuntimeIdentifier());
     private static readonly string ExecutePath = Path.Join(FullPath, "dotnet" + DotnetUrlHelper.GetExtension());
-    
+
     public static async Task<Process?> Run(string dllPath)
     {
         await EnsureDotnet();
-        
+
         return Process.Start(new ProcessStartInfo
         {
             FileName = ExecutePath,
@@ -33,22 +35,43 @@ public static class DotnetStandalone
             StandardOutputEncoding = Encoding.UTF8
         });
     }
-    
-    private static async Task EnsureDotnet(){
-        if(!Directory.Exists(FullPath))
+
+    private static async Task EnsureDotnet()
+    {
+        if (!Directory.Exists(FullPath))
             await Download();
     }
 
-    private static async Task Download(){
-        
+    private static async Task Download()
+    {
         LogStandalone.Log($"Downloading dotnet {DotnetUrlHelper.GetRuntimeIdentifier()}...");
-        var ridExt =
-            DotnetUrlHelper.GetCurrentPlatformDotnetUrl(ConfigurationStandalone.GetConfigValue(UpdateConVars.DotnetUrl)!);
-        using var response = await HttpClient.GetAsync(ridExt);
-        using var zipArchive = new ZipArchive(await response.Content.ReadAsStreamAsync());
+
+        var url = DotnetUrlHelper.GetCurrentPlatformDotnetUrl(
+            ConfigurationStandalone.GetConfigValue(UpdateConVars.DotnetUrl)!
+        );
+
+        using var response = await HttpClient.GetAsync(url);
+        response.EnsureSuccessStatusCode();
+        await using var stream = await response.Content.ReadAsStreamAsync();
+
         Directory.CreateDirectory(FullPath);
-        zipArchive.ExtractToDirectory(FullPath);
-        LogStandalone.Log($"Downloading dotnet complete.");
+
+        if (url.EndsWith(".zip", StringComparison.OrdinalIgnoreCase))
+        {
+            using var zipArchive = new ZipArchive(stream);
+            zipArchive.ExtractToDirectory(FullPath, true);
+        }
+        else if (url.EndsWith(".tar.gz", StringComparison.OrdinalIgnoreCase)
+                 || url.EndsWith(".tgz", StringComparison.OrdinalIgnoreCase))
+        {
+            TarUtils.ExtractTarGz(stream, FullPath);
+        }
+        else
+        {
+            throw new NotSupportedException("Unsupported archive format.");
+        }
+
+        LogStandalone.Log("Downloading dotnet complete.");
     }
 }
 
@@ -59,15 +82,12 @@ public static class DotnetUrlHelper
         if (OperatingSystem.IsWindows()) return ".exe";
         return "";
     }
-    
+
     public static string GetCurrentPlatformDotnetUrl(Dictionary<string, string> dotnetUrl)
     {
-        string? rid = GetRuntimeIdentifier();
+        var rid = GetRuntimeIdentifier();
 
-        if (dotnetUrl.TryGetValue(rid, out var url))
-        {
-            return url;
-        }
+        if (dotnetUrl.TryGetValue(rid, out var url)) return url;
 
         throw new PlatformNotSupportedException($"No download URL available for the current platform: {rid}");
     }
@@ -75,14 +95,9 @@ public static class DotnetUrlHelper
     public static string GetRuntimeIdentifier()
     {
         if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
-        {
             return Environment.Is64BitProcess ? "win-x64" : "win-x86";
-        }
 
-        if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
-        {
-            return "linux-x64";
-        }
+        if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux)) return "linux-x64";
 
         throw new PlatformNotSupportedException("Unsupported operating system");
     }

Nebula.UpdateResolver/MainWindow.axaml.cs

@@ -36,7 +36,11 @@ public partial class MainWindow : Window
             Console.WriteLine(messageOut);
             LogStr += messageOut + "\n";
         };
-        Start();
+        LogStandalone.Log("Starting up");
+        if (!Design.IsDesignMode)
+            _ = Start();
+        else
+            LogStandalone.Log("Debug information", 51);
     }
 
     private async Task Start()

Nebula.UpdateResolver/TarUtils.cs

@@ -0,0 +1,395 @@
+using System;
+using System.IO;
+using System.IO.Compression;
+using System.Text;
+
+namespace Nebula.UpdateResolver;
+
+public static class TarUtils
+{
+    public static void ExtractTarGz(Stream stream, string destinationDirectory)
+    {
+        if (destinationDirectory == null) throw new ArgumentNullException(nameof(destinationDirectory));
+        
+        using (var gzs = new GZipStream(stream, CompressionMode.Decompress, leaveOpen: false))
+        {
+            // GZipStream does not expose length, so just pass as streaming source
+            TarExtractor.ExtractTar(gzs, destinationDirectory);
+        }
+    }
+}
+
+public static class TarExtractor
+{
+    private const int BlockSize = 512;
+
+    public static void ExtractTar(Stream tarStream, string destinationDirectory)
+    {
+        if (tarStream == null) throw new ArgumentNullException(nameof(tarStream));
+        if (destinationDirectory == null) throw new ArgumentNullException(nameof(destinationDirectory));
+
+        Directory.CreateDirectory(destinationDirectory);
+
+        string pendingLongName = null;
+        string pendingLongLink = null;
+
+        var block = new byte[BlockSize];
+        var zeroBlockCount = 0;
+
+        while (true)
+        {
+            var read = ReadExactly(tarStream, block, 0, BlockSize);
+            if (read == 0)
+                break;
+
+            if (IsAllZero(block))
+            {
+                zeroBlockCount++;
+                if (zeroBlockCount >= 2) break; // two consecutive zero blocks -> end of archive
+                continue;
+            }
+
+            zeroBlockCount = 0;
+
+            var header = TarHeader.FromBlock(block);
+
+            // validate header checksum (best-effort)
+            if (!header.IsValidChecksum(block))
+            {
+                // Not fatal, but warn (we're not writing warnings to console by default).
+            }
+
+            // Some tar implementations supply the long filename in a preceding entry whose typeflag is 'L'.
+            // If present, use that name for the following file.
+            if (header.TypeFlag == 'L') // GNU long name
+            {
+                // read content blocks with size header.Size
+                var size = header.Size;
+                var nameBytes = new byte[size];
+                ReadExactly(tarStream, nameBytes, 0, (int)size);
+                // skip padding to full 512 block
+                SkipPadding(tarStream, size);
+                pendingLongName = ReadNullTerminatedString(nameBytes);
+                continue;
+            }
+
+            if (header.TypeFlag == 'K') // GNU long linkname
+            {
+                var size = header.Size;
+                var linkBytes = new byte[size];
+                ReadExactly(tarStream, linkBytes, 0, (int)size);
+                SkipPadding(tarStream, size);
+                pendingLongLink = ReadNullTerminatedString(linkBytes);
+                continue;
+            }
+
+            // Determine final name
+            var entryName = !string.IsNullOrEmpty(pendingLongName) ? pendingLongName : header.GetName();
+            var entryLinkName = !string.IsNullOrEmpty(pendingLongLink) ? pendingLongLink : header.LinkName;
+
+            // reset pending longs after use
+            pendingLongName = null;
+            pendingLongLink = null;
+
+            // sanitize path separators and avoid absolute paths
+            entryName = entryName.Replace('\\', Path.DirectorySeparatorChar).Replace('/', Path.DirectorySeparatorChar)
+                .TrimStart(Path.DirectorySeparatorChar);
+
+            var targetPath = Path.Combine(destinationDirectory, entryName);
+
+            switch (header.TypeFlag)
+            {
+                case '0':
+                case '\0': // normal file
+                case '7': // regular file (SUSv4)
+                    EnsureParentDirectoryExists(targetPath);
+                    using (var outFile = File.Open(targetPath, FileMode.Create, FileAccess.Write))
+                    {
+                        CopyExact(tarStream, outFile, header.Size);
+                    }
+
+                    SkipPadding(tarStream, header.Size);
+                    TrySetTimes(targetPath, header.ModTime);
+                    break;
+
+                case '5': // directory
+                    Directory.CreateDirectory(targetPath);
+                    TrySetTimes(targetPath, header.ModTime);
+                    break;
+
+                case '2': // symlink
+                    // Creating symlinks require privileges on Windows and may fail.
+                    // To keep things robust across platforms, write a small .symlink-info file for Windows fallback,
+                    // and attempt real symlink creation on Unix-like platforms.
+                    EnsureParentDirectoryExists(targetPath);
+                    TryCreateSymlink(entryLinkName, targetPath);
+                    break;
+
+                case '1': // hard link - we will try to create by copying if target exists; otherwise skip
+                    var linkTargetPath = Path.Combine(destinationDirectory,
+                        entryLinkName.Replace('/', Path.DirectorySeparatorChar));
+                    if (File.Exists(linkTargetPath))
+                    {
+                        EnsureParentDirectoryExists(targetPath);
+                        File.Copy(linkTargetPath, targetPath, true);
+                    }
+
+                    break;
+
+                case '3': // character device - skip
+                case '4': // block device - skip
+                case '6': // contiguous file - treat as regular
+                    // To be safe, treat as file if size > 0
+                    if (header.Size > 0)
+                    {
+                        EnsureParentDirectoryExists(targetPath);
+                        using (var outFile = File.Open(targetPath, FileMode.Create, FileAccess.Write))
+                        {
+                            CopyExact(tarStream, outFile, header.Size);
+                        }
+
+                        SkipPadding(tarStream, header.Size);
+                        TrySetTimes(targetPath, header.ModTime);
+                    }
+
+                    break;
+
+                default:
+                    // Unknown type - skip the file data
+                    if (header.Size > 0)
+                    {
+                        Skip(tarStream, header.Size);
+                        SkipPadding(tarStream, header.Size);
+                    }
+
+                    break;
+            }
+        }
+    }
+
+    private static void TryCreateSymlink(string linkTarget, string symlinkPath)
+    {
+        try
+        {
+            // On Unix-like systems we can try to create a symlink
+            if (IsWindows())
+            {
+                // don't try symlinks on Windows by default - write a .symlink-info file instead
+                File.WriteAllText(symlinkPath + ".symlink-info", $"symlink -> {linkTarget}");
+            }
+            else
+            {
+                // Unix: use symlink
+                var dir = Path.GetDirectoryName(symlinkPath);
+                if (!string.IsNullOrEmpty(dir)) Directory.CreateDirectory(dir);
+                // Use native syscall via Mono.Posix? Not allowed. Fall back to invoking 'ln -s' is not allowed.
+                // Instead use System.IO.File.CreateSymbolicLink if available (net core 2.1+)
+#if NETCOREAPP2_1_OR_GREATER || NET5_0_OR_GREATER
+                var sym = new FileInfo(symlinkPath);
+                sym.CreateAsSymbolicLink(linkTarget);
+#else
+                // If unavailable, write a .symlink-info file.
+                File.WriteAllText(symlinkPath + ".symlink-info", $"symlink -> {linkTarget}");
+#endif
+            }
+        }
+        catch
+        {
+            // Ignore failures to create symlink; write fallback info
+            try
+            {
+                File.WriteAllText(symlinkPath + ".symlink-info", $"symlink -> {linkTarget}");
+            }
+            catch
+            {
+            }
+        }
+    }
+
+    private static bool IsWindows()
+    {
+        return Path.DirectorySeparatorChar == '\\';
+    }
+
+    private static void TrySetTimes(string path, DateTimeOffset modTime)
+    {
+        try
+        {
+            var dt = modTime.UtcDateTime;
+            // convert to local to set file time sensibly
+            File.SetLastWriteTimeUtc(path, dt);
+        }
+        catch
+        {
+            /* best-effort */
+        }
+    }
+
+    private static void EnsureParentDirectoryExists(string path)
+    {
+        var dir = Path.GetDirectoryName(path);
+        if (!string.IsNullOrEmpty(dir) && !Directory.Exists(dir))
+            Directory.CreateDirectory(dir);
+    }
+
+    // Read exactly count bytes or throw if cannot
+    private static int ReadExactly(Stream s, byte[] buffer, int offset, int count)
+    {
+        var total = 0;
+        while (total < count)
+        {
+            var r = s.Read(buffer, offset + total, count - total);
+            if (r == 0) break;
+            total += r;
+        }
+
+        return total;
+    }
+
+    // Skip count bytes by reading and discarding
+    private static void Skip(Stream s, long count)
+    {
+        var tmp = new byte[8192];
+        var remaining = count;
+        while (remaining > 0)
+        {
+            var toRead = (int)Math.Min(tmp.Length, remaining);
+            var r = s.Read(tmp, 0, toRead);
+            if (r == 0) break;
+            remaining -= r;
+        }
+    }
+
+    private static void CopyExact(Stream source, Stream dest, long count)
+    {
+        var buf = new byte[8192];
+        var remaining = count;
+        while (remaining > 0)
+        {
+            var toRead = (int)Math.Min(buf.Length, remaining);
+            var r = source.Read(buf, 0, toRead);
+            if (r == 0) break;
+            dest.Write(buf, 0, r);
+            remaining -= r;
+        }
+    }
+
+    private static void SkipPadding(Stream s, long size)
+    {
+        var pad = (BlockSize - size % BlockSize) % BlockSize;
+        if (pad > 0) Skip(s, pad);
+    }
+
+    private static bool IsAllZero(byte[] block)
+    {
+        for (var i = 0; i < block.Length; i++)
+            if (block[i] != 0)
+                return false;
+        return true;
+    }
+
+    private static string ReadNullTerminatedString(byte[] bytes)
+    {
+        var len = 0;
+        while (len < bytes.Length && bytes[len] != 0) len++;
+        return Encoding.UTF8.GetString(bytes, 0, len);
+    }
+
+    private class TarHeader
+    {
+        public string Name { get; private set; }
+        public int Mode { get; private set; }
+        public int Uid { get; private set; }
+        public int Gid { get; private set; }
+        public long Size { get; private set; }
+        public DateTimeOffset ModTime { get; private set; }
+        public int Checksum { get; private set; }
+        public char TypeFlag { get; private set; }
+        public string LinkName { get; private set; }
+        public string Magic { get; private set; }
+        public string Version { get; private set; }
+        public string UName { get; private set; }
+        public string GName { get; private set; }
+        public string DevMajor { get; private set; }
+        public string DevMinor { get; private set; }
+        public string Prefix { get; private set; }
+
+        public static TarHeader FromBlock(byte[] block)
+        {
+            var h = new TarHeader();
+            h.Name = ReadString(block, 0, 100);
+            h.Mode = (int)ReadOctal(block, 100, 8);
+            h.Uid = (int)ReadOctal(block, 108, 8);
+            h.Gid = (int)ReadOctal(block, 116, 8);
+            h.Size = ReadOctal(block, 124, 12);
+            var mtime = ReadOctal(block, 136, 12);
+            h.ModTime = DateTimeOffset.FromUnixTimeSeconds(mtime);
+            h.Checksum = (int)ReadOctal(block, 148, 8);
+            h.TypeFlag = (char)block[156];
+            h.LinkName = ReadString(block, 157, 100);
+            h.Magic = ReadString(block, 257, 6);
+            h.Version = ReadString(block, 263, 2);
+            h.UName = ReadString(block, 265, 32);
+            h.GName = ReadString(block, 297, 32);
+            h.DevMajor = ReadString(block, 329, 8);
+            h.DevMinor = ReadString(block, 337, 8);
+            h.Prefix = ReadString(block, 345, 155);
+
+            return h;
+        }
+
+        public string GetName()
+        {
+            if (!string.IsNullOrEmpty(Prefix))
+                return $"{Prefix}/{Name}".Trim('/');
+            return Name;
+        }
+
+        public bool IsValidChecksum(byte[] block)
+        {
+            // compute checksum where checksum field (148..155) is spaces (0x20)
+            long sum = 0;
+            for (var i = 0; i < block.Length; i++)
+                if (i >= 148 && i < 156) sum += 32; // space
+                else sum += block[i];
+
+            // stored checksum could be octal until null
+            var stored = Checksum;
+            return Math.Abs(sum - stored) <= 1; // allow +/-1 tolerance
+        }
+
+        private static string ReadString(byte[] buf, int offset, int length)
+        {
+            var end = offset;
+            var max = offset + length;
+            while (end < max && buf[end] != 0) end++;
+            if (end == offset) return string.Empty;
+            return Encoding.ASCII.GetString(buf, offset, end - offset);
+        }
+
+        private static long ReadOctal(byte[] buf, int offset, int length)
+        {
+            // Many tars store as ASCII octal, possibly padded with nulls or spaces.
+            var end = offset + length;
+            var i = offset;
+            // skip leading spaces and nulls
+            while (i < end && (buf[i] == 0 || buf[i] == (byte)' ')) i++;
+            long val = 0;
+            var found = false;
+            for (; i < end; i++)
+            {
+                var b = buf[i];
+                if (b == 0 || b == (byte)' ') break;
+                if (b >= (byte)'0' && b <= (byte)'7')
+                {
+                    found = true;
+                    val = (val << 3) + (b - (byte)'0');
+                }
+                // some implementations use base-10 ascii or binary; ignore invalid chars
+            }
+
+            if (!found) return 0;
+            return val;
+        }
+    }
+}

Nebula.sln.DotSettings.user

@@ -7,6 +7,7 @@
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@@ -17,11 +18,17 @@
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 	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003AHttpMessageHandler_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FDecompilerCache_003Fdecompiler_003Ffcc079c54e9940c5ac59f0141dda9ad01b4928_003Fa7_003F885f5fd9_003FHttpMessageHandler_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
@@ -32,9 +39,13 @@
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 	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003AIDispatcherImpl_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FDecompilerCache_003Fdecompiler_003F22d92db124764b1ab49745245c66f01b1e1a00_003F0f_003F01061787_003FIDispatcherImpl_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
 	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003AIDisposable_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FDecompilerCache_003Fdecompiler_003Fa6b7f037ba7b44df80b8d3aa7e58eeb2e8e938_003F98_003Fd1b23281_003FIDisposable_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
+	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003AIGeometryContext_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FSourcesCache_003F22d92db124764b1ab49745245c66f01b1e1a00_003F_005F2c742_003FIGeometryContext_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
+	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003AImage_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FSourcesCache_003F2b95745d8f2ddf7b8ad6130e01c5b2782e253ff11247a9aeefcef47277b1ab_003FImage_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
 	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003AIndex_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FSourcesCache_003F2a1a813823579c69832f1304f97761e7be433bd6aa928f351d138050b56a38_003FIndex_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
 	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003AInt32_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FSourcesCache_003Fa882d183338544fdbcbdfc7b6d3dcb78916630765551644a221b5be9c45a121b_003FInt32_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
 	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003AInterop_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FDecompilerCache_003Fdecompiler_003Fc4d71b51722245ae8cde97bfd996e68386928_003F3a_003F004a1338_003FInterop_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
+	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003AIObservable_00601_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FDecompilerCache_003Fdecompiler_003Fa6b7f037ba7b44df80b8d3aa7e58eeb2e8e938_003F36_003Fae70bbb9_003FIObservable_00601_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
+	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003AItemsControl_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FSourcesCache_003F9b99b33b61e064a95d985c50edb17a9ee889e36b9ae2381866346ee68ced8bd9_003FItemsControl_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
 	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003AJsonSerializer_002ERead_002EString_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FSourcesCache_003F27c4858128168eda568c1334d70d5241efb9461e2a3209258a04deee5d9c367_003FJsonSerializer_002ERead_002EString_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
 	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003AKnownHeader_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FSourcesCache_003F1079f3c57a31ec97cba3b6ebb3d45c5a4afcdf6fa483a4db57c3d58ea59d7a9_003FKnownHeader_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
 	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003AListBox_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FSourcesCache_003F3a6cdc26ff4d30986a9a16b6bbc9bb6a7f2657431c82cde5c66dd377cf51e2b_003FListBox_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
@@ -43,8 +54,10 @@
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 	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003ANativeLibrary_002ECoreCLR_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FSourcesCache_003F88c2c65e1618f68cb5969f70dfc0986e9571015ac8d487b18d26e89c926264_003FNativeLibrary_002ECoreCLR_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
 	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003ANativeLibrary_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FSourcesCache_003F49393f3cda2f9a5c2fa811fc9179dcbaf5bd94d9dc8afc76aaff2bc23287f3_003FNativeLibrary_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
+	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003ANullable_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FSourcesCache_003F5acc345db3c207bc9d886a36ff14867ef8d65557432172c2a42f19aeac04d1b_003FNullable_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
 	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003AObservableCollection_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FSourcesCache_003F3e2c48e6b3ec8b39cf721287f93972c7f3df25d306753bcc539eaad73126c68_003FObservableCollection_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
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+	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003AObsoleteAttribute_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FSourcesCache_003Fd6ed53c3c6ac5794ce2e51aa4bcfdb5734b7f78ccfeccd5ba93ac6a0da3b2_003FObsoleteAttribute_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
 	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003APanel_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FSourcesCache_003F9b699722324e3615b57977447b25bf953fccb2d6e912ae584f16b7e691ad9d3_003FPanel_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
 	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003AParallel_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FSourcesCache_003F36fd1a9641998bb3afbf2091e26eafa6aaafabcb494bc746c0ba7471db513143_003FParallel_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
 	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003AParallel_002EForEachAsync_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FSourcesCache_003Fc1d1ed6be2d5d4de542b4af5b36e82f6d1d1a389a35a4e4f9748d137d1c651_003FParallel_002EForEachAsync_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
@@ -52,12 +65,16 @@
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 	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003APropertyInfo_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FSourcesCache_003F408236be4b0703755f3ed96daaae245919a792d65ce5eaa672d9fa945b1f_003FPropertyInfo_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
+	<s:String x:Key="/Default/CodeInspection/ExcludedFiles/FilesAndFoldersToSkip2/=7020124F_002D9FFC_002D4AC3_002D8F3D_002DAAB8E0240759_002Ff_003ARelayCommand_002Ecs_002Fl_003A_002E_002E_003F_002E_002E_003FUsers_003FCinka_003FAppData_003FRoaming_003FJetBrains_003FRider2024_002E3_003Fresharper_002Dhost_003FSourcesCache_003F20c0f49b8854743afaecc2f359655fdbfc6c5264f49e9eb333686e85a87bf_003FRelayCommand_002Ecs/@EntryIndexedValue">ForceIncluded</s:String>
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@@ -92,5 +109,8 @@
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+    &lt;TestId&gt;NUnit3x::735691F8-949C-4476-B9E4-5DF6FF8D3D0B::net9.0::Nebula.UnitTest.NebulaSharedTests.TarTest.Download&lt;/TestId&gt;&#xD;
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