- add: Service think

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "Robust.LoaderApi"]
+	path = Robust.LoaderApi
+	url = https://github.com/space-wizards/Robust.LoaderApi

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

@@ -4,6 +4,8 @@
     <option name="projectPerEditor">
       <map>
         <entry key="Nebula.Launcher/App.axaml" value="Nebula.Launcher/Nebula.Launcher.csproj" />
+        <entry key="Nebula.Launcher/Assets/Icons.axaml" value="Nebula.Launcher/Nebula.Launcher.csproj" />
+        <entry key="Nebula.Launcher/Assets/Style.axaml" value="Nebula.Launcher/Nebula.Launcher.csproj" />
         <entry key="Nebula.Launcher/ViewModels/Styles1.axaml" value="Nebula.Launcher/Nebula.Launcher.csproj" />
         <entry key="Nebula.Launcher/Views/Controls/PlayerContainerControl.axaml" value="Nebula.Launcher/Nebula.Launcher.csproj" />
         <entry key="Nebula.Launcher/Views/Controls/ServerContainerControl.axaml" value="Nebula.Launcher/Nebula.Launcher.csproj" />

Nebula.Launcher/App.axaml

@@ -11,57 +11,7 @@
 
     <Application.Styles>
         <FluentTheme />
-        <Style Selector="Window">
-            <Setter Property="Background" Value="#121212" />
-        </Style>
-        <Style Selector="Border">
-            <Setter Property="BorderBrush" Value="#343334" />
-            <Setter Property="Background" Value="#222222" />
-            <Setter Property="BorderThickness" Value="0" />
-        </Style>
-        <Style Selector="Label">
-            <Setter Property="Foreground" Value="#f7f7ff" />
-        </Style>
-
-        <Style Selector="Button">
-            <Setter Property="BorderBrush" Value="#343334" />
-            <Setter Property="BorderThickness" Value="0" />
-            <Setter Property="Padding" Value="5" />
-            <Setter Property="CornerRadius" Value="10" />
-        </Style>
-
-        <Style Selector="Button:pressed">
-            <Setter Property="RenderTransform" Value="{x:Null}" />
-        </Style>
-
-        <Style Selector="Border.ButtonBack">
-            <Setter Property="Background" Value="#e63462" />
-            <Setter Property="CornerRadius" Value="0,0,10,0" />
-        </Style>
-
-        <Style Selector="Button.ViewSelectButton">
-            <Setter Property="CornerRadius" Value="0,8,8,0" />
-            <Setter Property="Margin" Value="0,0,0,5" />
-            <Setter Property="Padding" Value="8" />
-            <Setter Property="Background" Value="#00000000" />
-        </Style>
-
-        <Style Selector="Button.ViewSelectButton:pressed">
-            <Setter Property="BorderThickness" Value="0,0,0,0" />
-        </Style>
-
-        <Style Selector="TextBox">
-            <Setter Property="Foreground" Value="#f7f7ff" />
-            <Setter Property="SelectionForegroundBrush" Value="#f7f7ff" />
-            <Setter Property="BorderThickness" Value="0,0,0,1" />
-            <Setter Property="BorderBrush" Value="#f7f7ff" />
-        </Style>
-        
-        <Style Selector="ListBoxItem">
-            <Setter Property="CornerRadius" Value="0,8,8,0" />
-            <Setter Property="Margin" Value="0,0,0,5" />
-            <Setter Property="Padding" Value="8" />
-            <Setter Property="Background" Value="#00000000" />
-        </Style>
+        <StyleInclude Source="Assets/Icons.axaml" />
+        <StyleInclude Source="Assets/Style.axaml" />
     </Application.Styles>
 </Application>

Nebula.Launcher/Assets/Style.axaml

@@ -0,0 +1,60 @@
+<Styles xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+    <Design.PreviewWith>
+        <Border Padding="20">
+            <!--  Add Controls for Previewer Here  -->
+        </Border>
+    </Design.PreviewWith>
+
+    <Style Selector="Window">
+        <Setter Property="Background" Value="#121212" />
+    </Style>
+    <Style Selector="Border">
+        <Setter Property="BorderBrush" Value="#343334" />
+        <Setter Property="Background" Value="#222222" />
+        <Setter Property="BorderThickness" Value="0" />
+    </Style>
+    <Style Selector="Label">
+        <Setter Property="Foreground" Value="#f7f7ff" />
+    </Style>
+
+    <Style Selector="Button">
+        <Setter Property="BorderBrush" Value="#343334" />
+        <Setter Property="BorderThickness" Value="0" />
+        <Setter Property="Padding" Value="5" />
+        <Setter Property="CornerRadius" Value="10" />
+    </Style>
+
+    <Style Selector="Button:pressed">
+        <Setter Property="RenderTransform" Value="{x:Null}" />
+    </Style>
+
+    <Style Selector="Border.ButtonBack">
+        <Setter Property="Background" Value="#e63462" />
+        <Setter Property="CornerRadius" Value="0,0,10,0" />
+    </Style>
+
+    <Style Selector="Button.ViewSelectButton">
+        <Setter Property="CornerRadius" Value="0,8,8,0" />
+        <Setter Property="Margin" Value="0,0,0,5" />
+        <Setter Property="Padding" Value="8" />
+        <Setter Property="Background" Value="#00000000" />
+    </Style>
+
+    <Style Selector="Button.ViewSelectButton:pressed">
+        <Setter Property="BorderThickness" Value="0,0,0,0" />
+    </Style>
+
+    <Style Selector="TextBox">
+        <Setter Property="Foreground" Value="#f7f7ff" />
+        <Setter Property="SelectionForegroundBrush" Value="#f7f7ff" />
+        <Setter Property="BorderThickness" Value="0,0,0,1" />
+        <Setter Property="BorderBrush" Value="#f7f7ff" />
+    </Style>
+
+    <Style Selector="ListBoxItem">
+        <Setter Property="CornerRadius" Value="0,8,8,0" />
+        <Setter Property="Margin" Value="0,0,0,5" />
+        <Setter Property="Padding" Value="8" />
+        <Setter Property="Background" Value="#00000000" />
+    </Style>
+</Styles>

Nebula.Launcher/CurrentConVar.cs

@@ -0,0 +1,22 @@
+using Nebula.Launcher.Services;
+
+namespace Nebula.Launcher;
+
+public static class CurrentConVar
+{
+    public static readonly ConVar EngineManifestUrl = 
+        ConVar.Build<string>("engine.manifestUrl", "https://robust-builds.cdn.spacestation14.com/manifest.json");
+    public static readonly ConVar EngineModuleManifestUrl = 
+        ConVar.Build<string>("engine.moduleManifestUrl", "https://robust-builds.cdn.spacestation14.com/modules.json");
+    public static readonly ConVar ManifestDownloadProtocolVersion =
+        ConVar.Build<int>("engine.manifestDownloadProtocolVersion", 1);
+    public static readonly ConVar RobustAssemblyName = 
+        ConVar.Build("engine.robustAssemblyName", "Robust.Client");
+    
+    public static readonly ConVar Hub = ConVar.Build<string[]>("launcher.hub", [
+        "https://hub.spacestation14.com/api/servers"
+    ]);
+    public static readonly ConVar AuthServers = ConVar.Build<string[]>("launcher.authServers", [
+        "https://auth.spacestation14.com/api/auth/authenticate"
+    ]);
+}

Nebula.Launcher/FileApis/AssemblyApi.cs

@@ -0,0 +1,22 @@
+using System.Collections.Generic;
+using System.IO;
+using Robust.LoaderApi;
+
+namespace Nebula.Launcher.FileApis;
+
+public class AssemblyApi : IFileApi
+{
+    private readonly IFileApi _root;
+
+    public AssemblyApi(IFileApi root)
+    {
+        _root = root;
+    }
+
+    public bool TryOpen(string path, out Stream? stream)
+    {
+        return _root.TryOpen(path, out stream);
+    }
+
+    public IEnumerable<string> AllFiles => _root.AllFiles;
+}

Nebula.Launcher/FileApis/FileApi.cs

@@ -0,0 +1,55 @@
+using System.Collections.Generic;
+using System.IO;
+using Nebula.Launcher.FileApis.Interfaces;
+
+namespace Nebula.Launcher.FileApis;
+
+public class FileApi : IReadWriteFileApi
+{
+    public string RootPath;
+
+    public FileApi(string rootPath)
+    {
+        RootPath = rootPath;
+    }
+
+    public bool TryOpen(string path, out Stream? stream)
+    {
+        if (File.Exists(Path.Join(RootPath, path)))
+        {
+            stream = File.OpenRead(Path.Join(RootPath, path));
+            return true;
+        }
+
+        stream = null;
+        return false;
+    }
+
+    public bool Save(string path, Stream input)
+    {
+        var currPath = Path.Join(RootPath, path);
+
+        var dirInfo = new DirectoryInfo(Path.GetDirectoryName(currPath));
+        if (!dirInfo.Exists) dirInfo.Create();
+
+        using var stream = File.OpenWrite(currPath);
+        input.CopyTo(stream);
+        stream.Close();
+        return true;
+    }
+
+    public bool Remove(string path)
+    {
+        if (!Has(path)) return false;
+        File.Delete(Path.Join(RootPath, path));
+        return true;
+    }
+
+    public bool Has(string path)
+    {
+        var currPath = Path.Join(RootPath, path);
+        return File.Exists(currPath);
+    }
+
+    public IEnumerable<string> AllFiles => Directory.EnumerateFiles(RootPath, "*.*", SearchOption.AllDirectories);
+}

Nebula.Launcher/FileApis/HashApi.cs

@@ -0,0 +1,32 @@
+using System.Collections.Generic;
+using System.IO;
+using Nebula.Launcher.Utils;
+using Robust.LoaderApi;
+
+namespace Nebula.Launcher.FileApis;
+
+public class HashApi : IFileApi
+{
+    private readonly IFileApi _fileApi;
+    public Dictionary<string, RobustManifestItem> Manifest;
+
+    public HashApi(List<RobustManifestItem> manifest, IFileApi fileApi)
+    {
+        _fileApi = fileApi;
+        Manifest = new Dictionary<string, RobustManifestItem>();
+        foreach (var item in manifest) Manifest.TryAdd(item.Path, item);
+    }
+
+    public bool TryOpen(string path, out Stream? stream)
+    {
+        if (path[0] == '/') path = path.Substring(1);
+
+        if (Manifest.TryGetValue(path, out var a) && _fileApi.TryOpen(a.Hash, out stream))
+            return true;
+
+        stream = null;
+        return false;
+    }
+
+    public IEnumerable<string> AllFiles => Manifest.Keys;
+}

Nebula.Launcher/FileApis/Interfaces/IReadWriteFileApi.cs

@@ -0,0 +1,7 @@
+using Robust.LoaderApi;
+
+namespace Nebula.Launcher.FileApis.Interfaces;
+
+public interface IReadWriteFileApi : IFileApi, IWriteFileApi
+{
+}

Nebula.Launcher/FileApis/Interfaces/IWriteFileApi.cs

@@ -0,0 +1,10 @@
+using System.IO;
+
+namespace Nebula.Launcher.FileApis.Interfaces;
+
+public interface IWriteFileApi
+{
+    public bool Save(string path, Stream input);
+    public bool Remove(string path);
+    public bool Has(string path);
+}

Nebula.Launcher/FileApis/ZipFileApi.cs

@@ -0,0 +1,64 @@
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using System.IO;
+using System.IO.Compression;
+using System.Linq;
+using System.Runtime.InteropServices;
+using Robust.LoaderApi;
+
+namespace Nebula.Launcher.FileApis;
+
+public sealed class ZipFileApi : IFileApi
+{
+    private readonly ZipArchive _archive;
+    private readonly string? _prefix;
+
+    public ZipFileApi(ZipArchive archive, string? prefix)
+    {
+        _archive = archive;
+        _prefix = prefix;
+    }
+
+    public bool TryOpen(string path, [NotNullWhen(true)] out Stream? stream)
+    {
+        var entry = _archive.GetEntry(_prefix != null ? _prefix + path : path);
+        if (entry == null)
+        {
+            stream = null;
+            return false;
+        }
+
+        stream = new MemoryStream();
+        lock (_archive)
+        {
+            using var zipStream = entry.Open();
+            zipStream.CopyTo(stream);
+        }
+
+        stream.Position = 0;
+        return true;
+    }
+
+    public IEnumerable<string> AllFiles
+    {
+        get
+        {
+            if (_prefix != null)
+                return _archive.Entries
+                    .Where(e => e.Name != "" && e.FullName.StartsWith(_prefix))
+                    .Select(e => e.FullName[_prefix.Length..]);
+            return _archive.Entries
+                .Where(e => e.Name != "")
+                .Select(entry => entry.FullName);
+        }
+    }
+
+    public static ZipFileApi FromPath(string path)
+    {
+        var zipArchive = new ZipArchive(File.OpenRead(path), ZipArchiveMode.Read);
+
+        var prefix = "";
+        if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX)) prefix = "Space Station 14.app/Contents/Resources/";
+        return new ZipFileApi(zipArchive, prefix);
+    }
+}

Nebula.Launcher/Models/RobustManifestInfo.cs

@@ -0,0 +1,5 @@
+using System;
+
+namespace Nebula.Launcher.Utils;
+
+public record struct RobustManifestInfo(Uri ManifestUri, Uri DownloadUri, string Hash);

Nebula.Launcher/Models/RobustManifestItem.cs

@@ -0,0 +1,3 @@
+namespace Nebula.Launcher.Utils;
+
+public record struct RobustManifestItem(string Hash, string Path, int Id);

Nebula.Launcher/Models/RobustServerEntry.cs

@@ -0,0 +1,80 @@
+using System;
+using System.Collections.Generic;
+using System.Text.Json.Serialization;
+
+namespace Nebula.Launcher.Models;
+
+public sealed record Auth(string Mode, string PublicKey);
+
+public sealed record Build(
+    string EngineVersion,
+    string ForkId,
+    string Version,
+    string DownloadUrl,
+    string ManifestUrl,
+    bool Acz,
+    string Hash,
+    string ManifestHash);
+
+public sealed record Link(string Name, string Icon, string Url);
+public sealed record Info(string ConnectAddress, Auth Auth, Build Build, string Desc, List<Link> Links);
+
+public sealed record Status(
+    string Name,
+    int Players,
+    List<object> Tags,
+    string Map,
+    int RoundId,
+    int SoftMaxPlayer,
+    bool PanicBunker,
+    int RunLevel,
+    string Preset);
+
+public enum ContentCompressionScheme
+{
+    None = 0,
+    Deflate = 1,
+
+    /// <summary>
+    ///     ZStandard compression. In the future may use SS14 specific dictionary IDs in the frame header.
+    /// </summary>
+    ZStd = 2
+}
+
+public sealed record VersionInfo(
+    bool Insecure,
+    [property: JsonPropertyName("redirect")]
+    string? RedirectVersion,
+    Dictionary<string, BuildInfo> Platforms);
+
+public sealed class BuildInfo
+{
+    [JsonInclude] [JsonPropertyName("sha256")]
+    public string Sha256 = default!;
+
+    [JsonInclude] [JsonPropertyName("sig")]
+    public string Signature = default!;
+
+    [JsonInclude] [JsonPropertyName("url")]
+    public string Url = default!;
+}
+
+public sealed record ServerInfo(string Address, StatusData StatusData, List<string> InferredTags);
+
+public sealed record StatusData(
+    string Map,
+    string Name,
+    List<string> Tags,
+    string Preset,
+    int Players,
+    int RoundId,
+    int RunLevel, 
+    bool PanicBunker, 
+    DateTime RoundStartTime, 
+    int SoftMaxPlayer);
+
+public sealed record ModulesInfo(Dictionary<string, Module> Modules);
+
+public sealed record Module(Dictionary<string, ModuleVersionInfo> Versions);
+
+public sealed record ModuleVersionInfo(Dictionary<string, BuildInfo> Platforms);

Nebula.Launcher/Nebula.Launcher.csproj

@@ -37,4 +37,8 @@
         <SubType>Code</SubType>
       </Compile>
     </ItemGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\Robust.LoaderApi\Robust.LoaderApi\Robust.LoaderApi.csproj" />
+    </ItemGroup>
 </Project>

Nebula.Launcher/ServiceCollectionExtensions.cs

@@ -1,9 +1,12 @@
 using System;
+using System.Collections.Generic;
+using System.Reflection;
 using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Controls.ApplicationLifetimes;
 using Avalonia.Threading;
 using Microsoft.Extensions.DependencyInjection;
+using Nebula.Launcher.ViewHelper;
 using Nebula.Launcher.ViewModels;
 using Nebula.Launcher.Views;
 using Nebula.Launcher.Views.Pages;
@@ -38,9 +41,24 @@ public static class ServiceCollectionExtensions
     private static void AddViews(this IServiceCollection services)
     {
         services.AddTransient<MainWindow>();
-        services.AddView<MainView, MainViewModel>();
-        services.AddView<AccountInfoView, AccountInfoViewModel>();
-        services.AddView<ServerListView, ServerListViewModel>();
+
+        foreach (var (viewModel, view) in GetTypesWithHelpAttribute(Assembly.GetExecutingAssembly()))
+        {
+            services.AddTransient(viewModel);
+            services.AddTransient(view);
+        }
+
+        foreach (var (type, inference) in GetServicesWithHelpAttribute(Assembly.GetExecutingAssembly()))
+        {
+            if (inference is null)
+            {
+                services.AddSingleton(type);
+            }
+            else
+            {
+                services.AddSingleton(inference, type);
+            }
+        }
     }
 
     private static void AddView<TView, TViewModel>(this IServiceCollection services)
@@ -50,4 +68,34 @@ public static class ServiceCollectionExtensions
         services.AddTransient<TViewModel>();
         services.AddTransient<TView>();
     }
+    
+    private static IEnumerable<(Type,Type)> GetTypesWithHelpAttribute(Assembly assembly) {
+        foreach(Type type in assembly.GetTypes())
+        {
+            var attr = type.GetCustomAttribute<ViewRegisterAttribute>();
+            if (attr is not null) {
+                yield return (type, attr.Type);
+            }
+        }
+    }
+    
+    private static IEnumerable<(Type,Type?)> GetServicesWithHelpAttribute(Assembly assembly) {
+        foreach(Type type in assembly.GetTypes())
+        {
+            var attr = type.GetCustomAttribute<ServiceRegisterAttribute>();
+            if (attr is not null) {
+                yield return (type, attr.Inference);
+            }
+        }
+    }
+}
+
+public sealed class ServiceRegisterAttribute : Attribute
+{
+    public Type? Inference { get; }
+
+    public ServiceRegisterAttribute(Type? inference = null)
+    {
+        Inference = inference;
+    }
 }

Nebula.Launcher/Services/ConfigurationService.cs

@@ -0,0 +1,62 @@
+using System;
+using System.Diagnostics.CodeAnalysis;
+
+namespace Nebula.Launcher.Services;
+
+public class ConVar
+{
+    public string Name { get; }
+    public Type Type { get; }
+    public object? DefaultValue { get; }
+
+    private ConVar(string name, Type type, object? defaultValue)
+    {
+        Name = name;
+        Type = type;
+        DefaultValue = defaultValue;
+    }
+
+    public static ConVar Build<T>(string name, T? defaultValue = default)
+    {
+        return new ConVar(name, typeof(T), defaultValue);
+    }
+}
+
+[ServiceRegister]
+public class ConfigurationService
+{
+    public ConfigurationService()
+    {
+        
+    }
+
+    public object? GetConfigValue(ConVar conVar)
+    {
+        return conVar.DefaultValue;
+    }
+
+    public T? GetConfigValue<T>(ConVar conVar)
+    {
+        var value = GetConfigValue(conVar);
+        if (value is not T tv) return default;
+        return tv;
+    }
+
+    public bool TryGetConfigValue(ConVar conVar,[NotNullWhen(true)] out object? value)
+    {
+        value = GetConfigValue(conVar);
+        return value != null;
+    }
+
+    public bool TryGetConfigValue<T>(ConVar conVar, [NotNullWhen(true)] out T? value)
+    {
+        value = GetConfigValue<T>(conVar);
+        return value != null;
+    }
+
+    public void SetValue(ConVar conVar, object value)
+    {
+        if(conVar.Type != value.GetType()) 
+            return;
+    }
+}

Nebula.Launcher/Services/DebugService.cs

@@ -0,0 +1,70 @@
+using System;
+using System.IO;
+using Nebula.Launcher.Services.Logging;
+
+namespace Nebula.Launcher.Services;
+
+[ServiceRegister]
+public class DebugService : IDisposable
+{
+    public ILogger Logger;
+
+    private static string LogPath = Path.Combine(FileService.RootPath, "log");
+    public DateTime LogDate = DateTime.Now;
+    private FileStream LogStream;
+    private StreamWriter LogWriter;
+
+    public DebugService(ILogger logger)
+    {
+        Logger = logger;
+        
+        if (!Directory.Exists(LogPath))
+            Directory.CreateDirectory(LogPath);
+        
+        var filename = String.Format("{0:yyyy-MM-dd}.txt", DateTime.Now);
+
+        LogStream = File.Open(Path.Combine(LogPath, filename),
+            FileMode.Append, FileAccess.Write);
+        LogWriter = new StreamWriter(LogStream);
+    }
+
+    public void Debug(string message)
+    {
+        Log(LoggerCategory.Debug, message);
+    }
+
+    public void Error(string message)
+    {
+        Log(LoggerCategory.Error, message);
+    }
+
+    public void Log(string message)
+    {
+        Log(LoggerCategory.Log, message);
+    }
+
+    public void Dispose()
+    {
+        LogWriter.Dispose();
+        LogStream.Dispose();
+    }
+
+    private void Log(LoggerCategory category, string message)
+    {
+        Logger.Log(category, message);
+        SaveToLog(category, message);
+    }
+
+    private void SaveToLog(LoggerCategory category, string message)
+    {
+        LogWriter.WriteLine($"[{category}] {message}");
+        LogWriter.Flush();
+    }
+}
+
+public enum LoggerCategory
+{
+    Log,
+    Debug,
+    Error
+}

Nebula.Launcher/Services/FileService.cs

@@ -0,0 +1,64 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.IO.Compression;
+using System.Runtime.InteropServices;
+using Nebula.Launcher.FileApis;
+using Nebula.Launcher.FileApis.Interfaces;
+using Nebula.Launcher.Utils;
+using Robust.LoaderApi;
+
+namespace Nebula.Launcher.Services;
+
+public class FileService
+{
+    public static string RootPath = Path.Join(Environment.GetFolderPath(
+        Environment.SpecialFolder.ApplicationData), "./Datum/");
+
+    private readonly DebugService _debugService;
+    public readonly IReadWriteFileApi ContentFileApi;
+
+    public readonly IReadWriteFileApi EngineFileApi;
+    public readonly IReadWriteFileApi ManifestFileApi;
+    private HashApi? _hashApi;
+
+    public FileService(DebugService debugService)
+    {
+        _debugService = debugService;
+        ContentFileApi = CreateFileApi("content/");
+        EngineFileApi = CreateFileApi("engine/");
+        ManifestFileApi = CreateFileApi("manifest/");
+    }
+
+    public List<RobustManifestItem> ManifestItems
+    {
+        set => _hashApi = new HashApi(value, ContentFileApi);
+    }
+
+    public HashApi HashApi
+    {
+        get
+        {
+            if (_hashApi is null) throw new Exception("Hash API is not initialized!");
+            return _hashApi;
+        }
+        set => _hashApi = value;
+    }
+
+    public IReadWriteFileApi CreateFileApi(string path)
+    {
+        return new FileApi(Path.Join(RootPath, path));
+    }
+
+    public ZipFileApi OpenZip(string path, IFileApi fileApi)
+    {
+        if (!fileApi.TryOpen(path, out var zipStream))
+            return null;
+
+        var zipArchive = new ZipArchive(zipStream, ZipArchiveMode.Read);
+
+        var prefix = "";
+        if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX)) prefix = "Space Station 14.app/Contents/Resources/";
+        return new ZipFileApi(zipArchive, prefix);
+    }
+}

Nebula.Launcher/Services/HubService.cs

@@ -0,0 +1,76 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Collections.Specialized;
+using System.Threading;
+using Nebula.Launcher.Models;
+
+namespace Nebula.Launcher.Services;
+
+[ServiceRegister]
+public class HubService
+{
+    private readonly RestService _restService;
+
+    public Action<HubServerChangedEventArgs>? HubServerChangedEventArgs;
+    
+    public readonly ObservableCollection<string> HubList = new();
+
+    private readonly Dictionary<string, List<ServerInfo>> _servers = new();
+    
+    
+    public HubService(ConfigurationService configurationService, RestService restService)
+    {
+        _restService = restService;
+        HubList.CollectionChanged += HubListCollectionChanged;
+        
+        foreach (var hubUrl in configurationService.GetConfigValue<string[]>(CurrentConVar.Hub)!)
+        {
+            HubList.Add(hubUrl);
+        }
+    }
+
+    private async void HubListCollectionChanged(object? sender, NotifyCollectionChangedEventArgs e)
+    {
+        if (e.NewItems is not null)
+        {
+            foreach (var hubUri in e.NewItems)
+            {
+                var urlStr = (string)hubUri;
+                var servers = await _restService.GetAsyncDefault<List<ServerInfo>>(new Uri(urlStr), [], CancellationToken.None);
+                _servers[urlStr] = servers;
+                HubServerChangedEventArgs?.Invoke(new HubServerChangedEventArgs(servers, HubServerChangeAction.Add));
+            }
+        }
+
+        if (e.OldItems is not null)
+        {
+            foreach (var hubUri in e.OldItems)
+            {
+                var urlStr = (string)hubUri;
+                if (_servers.TryGetValue(urlStr, out var serverInfos))
+                {
+                    _servers.Remove(urlStr);
+                    HubServerChangedEventArgs?.Invoke(new HubServerChangedEventArgs(serverInfos, HubServerChangeAction.Remove));
+                }
+            }
+        }
+    }
+}
+
+public class HubServerChangedEventArgs : EventArgs
+{
+    public HubServerChangeAction Action;
+    public List<ServerInfo> Items;
+
+    public HubServerChangedEventArgs(List<ServerInfo> items, HubServerChangeAction action)
+    {
+        Items = items;
+        Action = action;
+    }
+}
+
+public enum HubServerChangeAction
+{
+    Add, Remove,
+}

Nebula.Launcher/Services/Logging/ConsoleLogger.cs

@@ -0,0 +1,15 @@
+using System;
+
+namespace Nebula.Launcher.Services.Logging;
+
+[ServiceRegister(typeof(ILogger))]
+public class ConsoleLogger : ILogger
+{
+    public void Log(LoggerCategory loggerCategory, string message)
+    {
+        Console.ForegroundColor = ConsoleColor.DarkCyan;
+        Console.Write($"[{Enum.GetName(loggerCategory)}] ");
+        Console.ResetColor();
+        Console.WriteLine(message);
+    }
+}

Nebula.Launcher/Services/Logging/ILogger.cs

@@ -0,0 +1,6 @@
+namespace Nebula.Launcher.Services.Logging;
+
+public interface ILogger
+{
+    public void Log(LoggerCategory loggerCategory, string message);
+}

Nebula.Launcher/Services/RestService.cs

@@ -0,0 +1,154 @@
+using System;
+using System.Globalization;
+using System.IO;
+using System.Net;
+using System.Net.Http;
+using System.Text;
+using System.Text.Json;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Nebula.Launcher.Services;
+
+[ServiceRegister]
+public class RestService
+{
+    private readonly HttpClient _client = new();
+    private readonly DebugService _debug;
+
+    private readonly JsonSerializerOptions _serializerOptions = new()
+    {
+        PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
+        WriteIndented = true
+    };
+
+    public RestService(DebugService debug)
+    {
+        _debug = debug;
+    }
+
+    public async Task<RestResult<T>> GetAsync<T>(Uri uri, CancellationToken cancellationToken)
+    {
+        _debug.Debug("GET " + uri);
+        try
+        {
+            var response = await _client.GetAsync(uri, cancellationToken);
+            return await ReadResult<T>(response, cancellationToken);
+        }
+        catch (Exception ex)
+        {
+            _debug.Error("ERROR WHILE CONNECTION " + uri + ": " + ex.Message);
+            return new RestResult<T>(default, ex.Message, HttpStatusCode.RequestTimeout);
+        }
+    }
+
+    public async Task<T> GetAsyncDefault<T>(Uri uri, T defaultValue, CancellationToken cancellationToken)
+    {
+        var result = await GetAsync<T>(uri, cancellationToken);
+        return result.Value ?? defaultValue;
+    }
+
+    public async Task<RestResult<K>> PostAsync<K, T>(T information, Uri uri, CancellationToken cancellationToken)
+    {
+        _debug.Debug("POST " + uri);
+        try
+        {
+            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);
+        }
+        catch (Exception ex)
+        {
+            _debug.Debug("ERROR " + ex.Message);
+            return new RestResult<K>(default, ex.Message, HttpStatusCode.RequestTimeout);
+        }
+    }
+
+    public async Task<RestResult<T>> PostAsync<T>(Stream stream, Uri uri, CancellationToken cancellationToken)
+    {
+        _debug.Debug("POST " + uri);
+        try
+        {
+            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);
+        }
+        catch (Exception ex)
+        {
+            _debug.Error("ERROR " + ex.Message);
+            if (ex.StackTrace != null) _debug.Error(ex.StackTrace);
+            return new RestResult<T>(default, ex.Message, HttpStatusCode.RequestTimeout);
+        }
+    }
+
+    public async Task<RestResult<T>> DeleteAsync<T>(Uri uri, CancellationToken cancellationToken)
+    {
+        _debug.Debug("DELETE " + uri);
+        try
+        {
+            var response = await _client.DeleteAsync(uri, cancellationToken);
+            return await ReadResult<T>(response, cancellationToken);
+        }
+        catch (Exception ex)
+        {
+            _debug.Debug("ERROR " + ex.Message);
+            return new RestResult<T>(default, ex.Message, HttpStatusCode.RequestTimeout);
+        }
+    }
+
+    private async Task<RestResult<T>> ReadResult<T>(HttpResponseMessage response, CancellationToken cancellationToken)
+    {
+        var content = await response.Content.ReadAsStringAsync(cancellationToken);
+        //_debug.Debug("CONTENT:" + content);
+
+        if (response.IsSuccessStatusCode)
+        {
+            _debug.Debug($"SUCCESSFUL GET CONTENT {typeof(T)}");
+            if (typeof(T) == typeof(RawResult))
+                return (new RestResult<RawResult>(new RawResult(content), null, response.StatusCode) as RestResult<T>)!;
+
+            return new RestResult<T>(JsonSerializer.Deserialize<T>(content, _serializerOptions), null,
+                response.StatusCode);
+        }
+
+        _debug.Error("ERROR " + response.StatusCode + " " + content);
+        return new RestResult<T>(default, "response code:" + response.StatusCode, response.StatusCode);
+    }
+}
+
+public class RestResult<T>
+{
+    public string? Message;
+    public HttpStatusCode StatusCode;
+    public T? Value;
+
+    public RestResult(T? value, string? message, HttpStatusCode statusCode)
+    {
+        Value = value;
+        Message = message;
+        StatusCode = statusCode;
+    }
+
+    public static implicit operator T?(RestResult<T> result)
+    {
+        return result.Value;
+    }
+}
+
+public class RawResult
+{
+    public string Result;
+
+    public RawResult(string result)
+    {
+        Result = result;
+    }
+
+    public static implicit operator string(RawResult result)
+    {
+        return result.Result;
+    }
+}

Nebula.Launcher/Utils/BandwidthStream.cs

@@ -0,0 +1,142 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Nebula.Launcher.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.Launcher/Utils/Manifest.cs

@@ -0,0 +1,118 @@
+using System.Diagnostics.CodeAnalysis;
+using System.IO;
+using System.Text;
+
+namespace Nebula.Launcher.Utils;
+
+public class ManifestReader : StreamReader
+{
+    public const int BufferSize = 128;
+
+    public ManifestReader(Stream stream) : base(stream)
+    {
+        ReadManifestVersion();
+    }
+
+    public ManifestReader(Stream stream, bool detectEncodingFromByteOrderMarks) : base(stream,
+        detectEncodingFromByteOrderMarks)
+    {
+        ReadManifestVersion();
+    }
+
+    public ManifestReader(Stream stream, Encoding encoding) : base(stream, encoding)
+    {
+        ReadManifestVersion();
+    }
+
+    public ManifestReader(Stream stream, Encoding encoding, bool detectEncodingFromByteOrderMarks) : base(stream,
+        encoding, detectEncodingFromByteOrderMarks)
+    {
+        ReadManifestVersion();
+    }
+
+    public ManifestReader(Stream stream, Encoding encoding, bool detectEncodingFromByteOrderMarks, int bufferSize) :
+        base(stream, encoding, detectEncodingFromByteOrderMarks, bufferSize)
+    {
+        ReadManifestVersion();
+    }
+
+    public ManifestReader(Stream stream, Encoding? encoding = null, bool detectEncodingFromByteOrderMarks = true,
+        int bufferSize = -1, bool leaveOpen = false) : base(stream, encoding, detectEncodingFromByteOrderMarks,
+        bufferSize, leaveOpen)
+    {
+        ReadManifestVersion();
+    }
+
+    public ManifestReader(string path) : base(path)
+    {
+        ReadManifestVersion();
+    }
+
+    public ManifestReader(string path, bool detectEncodingFromByteOrderMarks) : base(path,
+        detectEncodingFromByteOrderMarks)
+    {
+        ReadManifestVersion();
+    }
+
+    public ManifestReader(string path, FileStreamOptions options) : base(path, options)
+    {
+        ReadManifestVersion();
+    }
+
+    public ManifestReader(string path, Encoding encoding) : base(path, encoding)
+    {
+        ReadManifestVersion();
+    }
+
+    public ManifestReader(string path, Encoding encoding, bool detectEncodingFromByteOrderMarks) : base(path, encoding,
+        detectEncodingFromByteOrderMarks)
+    {
+        ReadManifestVersion();
+    }
+
+    public ManifestReader(string path, Encoding encoding, bool detectEncodingFromByteOrderMarks, int bufferSize) : base(
+        path, encoding, detectEncodingFromByteOrderMarks, bufferSize)
+    {
+        ReadManifestVersion();
+    }
+
+    public ManifestReader(string path, Encoding encoding, bool detectEncodingFromByteOrderMarks,
+        FileStreamOptions options) : base(path, encoding, detectEncodingFromByteOrderMarks, options)
+    {
+        ReadManifestVersion();
+    }
+
+    public string ManifestVersion { get; private set; } = "";
+    public int CurrentId { get; private set; }
+
+    private void ReadManifestVersion()
+    {
+        ManifestVersion = ReadLine();
+    }
+
+    public RobustManifestItem? ReadItem()
+    {
+        var line = ReadLine();
+        if (line == null) return null;
+        var splited = line.Split(" ");
+        return new RobustManifestItem(splited[0], line.Substring(splited[0].Length + 1), CurrentId++);
+    }
+
+    public bool TryReadItem([NotNullWhen(true)] out RobustManifestItem? item)
+    {
+        item = ReadItem();
+        return item != null;
+    }
+
+    protected override void Dispose(bool disposing)
+    {
+        base.Dispose(disposing);
+        CurrentId = 0;
+    }
+
+    public new void DiscardBufferedData()
+    {
+        base.DiscardBufferedData();
+        CurrentId = 0;
+    }
+}

Nebula.Launcher/Utils/RidUtility.cs

@@ -0,0 +1,121 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Nebula.Launcher.Utils;
+
+public static class RidUtility
+{
+    public static string? FindBestRid(ICollection<string> runtimes, string? currentRid = null)
+    {
+        var catalog = LoadRidCatalog();
+
+        if (currentRid == null)
+        {
+            var reportedRid = RuntimeInformation.RuntimeIdentifier;
+            if (!catalog.Runtimes.ContainsKey(reportedRid))
+            {
+                currentRid = GuessRid();
+                Console.WriteLine(".NET reported unknown RID: {0}, guessing: {1}", reportedRid, currentRid);
+            }
+            else
+            {
+                currentRid = reportedRid;
+            }
+        }
+
+        // Breadth-first search.
+        var q = new Queue<string>();
+        if (!catalog.Runtimes.TryGetValue(currentRid, out var root))
+            // RID doesn't exist in catalog???
+            return null;
+
+        root.Discovered = true;
+        q.Enqueue(currentRid);
+
+        while (q.TryDequeue(out var v))
+        {
+            if (runtimes.Contains(v)) return v;
+
+            foreach (var w in catalog.Runtimes[v].Imports)
+            {
+                var r = catalog.Runtimes[w];
+                if (!r.Discovered)
+                {
+                    q.Enqueue(w);
+                    r.Discovered = true;
+                }
+            }
+        }
+
+        return null;
+    }
+
+    private static string GuessRid()
+    {
+        if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
+            return RuntimeInformation.ProcessArchitecture switch
+            {
+                Architecture.X86 => "linux-x86",
+                Architecture.X64 => "linux-x64",
+                Architecture.Arm => "linux-arm",
+                Architecture.Arm64 => "linux-arm64",
+                _ => "unknown"
+            };
+
+        if (RuntimeInformation.IsOSPlatform(OSPlatform.FreeBSD))
+            return RuntimeInformation.ProcessArchitecture switch
+            {
+                Architecture.X64 => "freebsd-x64",
+                _ => "unknown"
+            };
+
+        if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            return RuntimeInformation.ProcessArchitecture switch
+            {
+                Architecture.X86 => "win-x86",
+                Architecture.X64 => "win-x64",
+                Architecture.Arm => "win-arm",
+                Architecture.Arm64 => "win-arm64",
+                _ => "unknown"
+            };
+
+        if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
+            return RuntimeInformation.ProcessArchitecture switch
+            {
+                Architecture.X64 => "osx-x64",
+                Architecture.Arm64 => "osx-arm64",
+                _ => "unknown"
+            };
+
+        return "unknown";
+    }
+
+    private static RidCatalog LoadRidCatalog()
+    {
+        using var stream = typeof(RidCatalog).Assembly.GetManifestResourceStream("Utility.runtime.json")!;
+        var ms = new MemoryStream();
+        stream.CopyTo(ms);
+
+        return JsonSerializer.Deserialize<RidCatalog>(ms.GetBuffer().AsSpan(0, (int)ms.Length))!;
+    }
+
+#pragma warning disable 649
+    private sealed class RidCatalog
+    {
+        [JsonInclude] [JsonPropertyName("runtimes")]
+        public Dictionary<string, Runtime> Runtimes = default!;
+
+        public class Runtime
+        {
+            public bool Discovered;
+
+            [JsonInclude] [JsonPropertyName("#import")]
+            public string[] Imports = default!;
+        }
+    }
+#pragma warning restore 649
+}

Nebula.Launcher/Utils/StreamHelper.cs

@@ -0,0 +1,58 @@
+using System;
+using System.Buffers;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Nebula.Launcher.Utils;
+
+public static class StreamHelper
+{
+    public static async ValueTask<byte[]> ReadExactAsync(this Stream stream, int amount, CancellationToken? cancel)
+    {
+        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)
+    {
+        while (into.Length > 0)
+        {
+            var read = await stream.ReadAsync(into);
+
+            // Check EOF.
+            if (read == 0)
+                throw new EndOfStreamException();
+
+            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.Launcher/Utils/UriHelper.cs

@@ -0,0 +1,135 @@
+using System;
+using System.Diagnostics.CodeAnalysis;
+using System.Diagnostics.Contracts;
+using System.Web;
+
+namespace Nebula.Launcher.Utils;
+
+public static class UriHelper
+{
+    public const string SchemeSs14 = "ss14";
+
+    // ReSharper disable once InconsistentNaming
+    public const string SchemeSs14s = "ss14s";
+
+    /// <summary>
+    ///     Parses an <c>ss14://</c> or <c>ss14s://</c> URI,
+    ///     defaulting to <c>ss14://</c> if no scheme is specified.
+    /// </summary>
+    [Pure]
+    public static Uri ParseSs14Uri(string address)
+    {
+        if (!TryParseSs14Uri(address, out var uri)) throw new FormatException("Not a valid SS14 URI");
+
+        return uri;
+    }
+
+    [Pure]
+    public static bool TryParseSs14Uri(string address, [NotNullWhen(true)] out Uri? uri)
+    {
+        if (!address.Contains("://")) address = "ss14://" + address;
+
+        if (!Uri.TryCreate(address, UriKind.Absolute, out uri)) return false;
+
+        if (uri.Scheme != SchemeSs14 && uri.Scheme != SchemeSs14s) return false;
+
+        if (string.IsNullOrWhiteSpace(uri.Host))
+            return false;
+
+        return true;
+    }
+
+    /// <summary>
+    ///     Gets the <c>http://</c> or <c>https://</c> API address for a server address.
+    /// </summary>
+    [Pure]
+    public static Uri GetServerApiAddress(Uri serverAddress)
+    {
+        var dataScheme = serverAddress.Scheme switch
+        {
+            "ss14" => Uri.UriSchemeHttp,
+            "ss14s" => Uri.UriSchemeHttps,
+            _ => throw new ArgumentException($"Wrong URI scheme: {serverAddress.Scheme}")
+        };
+
+        var builder = new UriBuilder(serverAddress)
+        {
+            Scheme = dataScheme
+        };
+
+        // No port specified.
+        // Default port for ss14:// is 1212, for ss14s:// it's 443 (HTTPS)
+        if (serverAddress.IsDefaultPort && serverAddress.Scheme == SchemeSs14) builder.Port = 1212;
+
+        if (!builder.Path.EndsWith('/')) builder.Path += "/";
+
+        return builder.Uri;
+    }
+
+    /// <summary>
+    ///     Gets the <c>/status</c> HTTP address for a server address.
+    /// </summary>
+    [Pure]
+    public static Uri GetServerStatusAddress(string serverAddress)
+    {
+        return GetServerStatusAddress(ParseSs14Uri(serverAddress));
+    }
+
+    /// <summary>
+    ///     Gets the <c>/status</c> HTTP address for an ss14 uri.
+    /// </summary>
+    [Pure]
+    public static Uri GetServerStatusAddress(Uri serverAddress)
+    {
+        return new Uri(GetServerApiAddress(serverAddress), "status");
+    }
+
+    /// <summary>
+    ///     Gets the <c>/info</c> HTTP address for a server address.
+    /// </summary>
+    [Pure]
+    public static Uri GetServerInfoAddress(string serverAddress)
+    {
+        return GetServerInfoAddress(ParseSs14Uri(serverAddress));
+    }
+
+    /// <summary>
+    ///     Gets the <c>/info</c> HTTP address for an ss14 uri.
+    /// </summary>
+    [Pure]
+    public static Uri GetServerInfoAddress(Uri serverAddress)
+    {
+        return new Uri(GetServerApiAddress(serverAddress), "info");
+    }
+
+    /// <summary>
+    ///     Gets the <c>/client.zip</c> HTTP address for a server address.
+    ///     This is not necessarily the actual client ZIP address.
+    /// </summary>
+    [Pure]
+    public static Uri GetServerSelfhostedClientZipAddress(string serverAddress)
+    {
+        return GetServerSelfhostedClientZipAddress(ParseSs14Uri(serverAddress));
+    }
+
+    /// <summary>
+    ///     Gets the <c>/client.zip</c> HTTP address for an ss14 uri.
+    ///     This is not necessarily the actual client ZIP address.
+    /// </summary>
+    [Pure]
+    public static Uri GetServerSelfhostedClientZipAddress(Uri serverAddress)
+    {
+        return new Uri(GetServerApiAddress(serverAddress), "client.zip");
+    }
+    
+    [Pure]
+    public static Uri AddParameter(this Uri url, string paramName, string paramValue)
+    {
+        var uriBuilder = new UriBuilder(url);
+        var query = HttpUtility.ParseQueryString(uriBuilder.Query);
+        query[paramName] = paramValue;
+        uriBuilder.Query = query.ToString();
+
+        return uriBuilder.Uri;
+    }
+}

Nebula.Launcher/ViewModels/MainViewModel.cs

@@ -36,8 +36,8 @@ public partial class MainViewModel : ViewModelBase
 
     private readonly List<ListItemTemplate> _templates =
     [
-        new ListItemTemplate(typeof(AccountInfoViewModel), "HomeRegular", "Account"),
-        new ListItemTemplate(typeof(ServerListViewModel), "List", "Servers")
+        new ListItemTemplate(typeof(AccountInfoViewModel), "Account", "Account"),
+        new ListItemTemplate(typeof(ServerListViewModel), "HomeRegular", "Servers")
     ];
 
     [ObservableProperty]
@@ -51,12 +51,10 @@ public partial class MainViewModel : ViewModelBase
 
     partial void OnSelectedListItemChanged(ListItemTemplate? value)
     {
-        Console.WriteLine("FUCKED " + value?.ModelType);
         if (value is null) return;
 
         if(!TryGetViewModel(value.ModelType, out var vmb))
         {
-            Console.WriteLine("FUCKCCC");
             return;
         }
  

Nebula.Launcher/ViewModels/ServerListViewModel.cs

@@ -1,13 +1,46 @@
 using System;
+using System.Collections.ObjectModel;
+using CommunityToolkit.Mvvm.ComponentModel;
+using Nebula.Launcher.Models;
+using Nebula.Launcher.Services;
 using Nebula.Launcher.ViewHelper;
 using Nebula.Launcher.Views.Pages;
 
 namespace Nebula.Launcher.ViewModels;
 
 [ViewRegister(typeof(ServerListView))]
-public class ServerListViewModel : ViewModelBase
+public partial class ServerListViewModel : ViewModelBase
 {
-    public ServerListViewModel(IServiceProvider serviceProvider) : base(serviceProvider)
+    public ObservableCollection<ServerInfo> ServerInfos { get; }
+    
+    [ObservableProperty]
+    private ServerInfo? _selectedListItem;
+
+    public ServerListViewModel()
     {
+        ServerInfos = new ObservableCollection<ServerInfo>();
+    }
+    public ServerListViewModel(IServiceProvider serviceProvider, HubService hubService) : base(serviceProvider)
+    {
+        ServerInfos = new ObservableCollection<ServerInfo>();
+        hubService.HubServerChangedEventArgs += HubServerChangedEventArgs;
+    }
+
+    private void HubServerChangedEventArgs(HubServerChangedEventArgs obj)
+    {
+        if (obj.Action == HubServerChangeAction.Add)
+        {
+            foreach (var info in obj.Items)
+            {
+                ServerInfos.Add(info);
+            }
+        }
+        else
+        {
+            foreach (var info in obj.Items)
+            {
+                ServerInfos.Remove(info);
+            }
+        }
     }
 }

Nebula.Launcher/ViewModels/ViewModelBase.cs

@@ -24,8 +24,6 @@ public abstract class ViewModelBase : ObservableObject
         var vm = Design.IsDesignMode
             ? Activator.CreateInstance(type)
             : _serviceProvider.GetService(type);
-        
-        Console.WriteLine(vm?.ToString());
 
         if (vm is not ViewModelBase vmb) return false;
 

Nebula.Launcher/Views/Controls/ServerContainerControl.axaml

@@ -17,7 +17,7 @@
             Grid.Column="0"
             Grid.Row="0"
             Padding="10">
-            <Label>Server name</Label>
+            <TextBlock x:Name="ServerNameLabel">Server name</TextBlock>
         </Border>
         <Border
             BorderThickness="2,0,0,0"

Nebula.Launcher/Views/Controls/ServerContainerControl.axaml.cs

@@ -1,9 +1,23 @@
+using Avalonia;
 using Avalonia.Controls;
 
 namespace Nebula.Launcher.Views.Controls;
 
 public partial class ServerContainerControl : UserControl
 {
+    public static readonly StyledProperty<string> ServerNameProperty 
+        = AvaloniaProperty.Register<ServerContainerControl, string>(nameof (ServerName));
+    
+    public string ServerName
+    {
+        get => GetValue(ServerNameProperty);
+        set
+        {
+            SetValue(ServerNameProperty, value);
+            ServerNameLabel.Text = value;
+        }
+    }
+
     public ServerContainerControl()
     {
         InitializeComponent();

Nebula.Launcher/Views/Pages/ServerListView.axaml

@@ -2,29 +2,34 @@
     d:DesignHeight="450"
     d:DesignWidth="800"
     mc:Ignorable="d"
-    x:Class="Nebula.Launcher.Views.Pages.ServerListView" 
-    x:DataType="pages:ServerListView"
+    x:Class="Nebula.Launcher.Views.Pages.ServerListView"
+    x:DataType="viewModels:ServerListViewModel"
     xmlns="https://github.com/avaloniaui"
     xmlns:controls="clr-namespace:Nebula.Launcher.Views.Controls"
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-    xmlns:pages="clr-namespace:Nebula.Launcher.Views.Pages">
+    xmlns:models="clr-namespace:Nebula.Launcher.Models"
+    xmlns:viewModels="clr-namespace:Nebula.Launcher.ViewModels"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+
+    <Design.DataContext>
+        <viewModels:ServerListViewModel />
+    </Design.DataContext>
+
     <Grid ColumnDefinitions="*" RowDefinitions="*,40">
         <ScrollViewer Margin="0,0,0,10" Padding="0,0,8,0">
-            <StackPanel>
-                <controls:ServerContainerControl />
-                <controls:ServerContainerControl />
-                <controls:ServerContainerControl />
-                <controls:ServerContainerControl />
-                <controls:ServerContainerControl />
-                <controls:ServerContainerControl />
-                <controls:ServerContainerControl />
-                <controls:ServerContainerControl />
-                <controls:ServerContainerControl />
-                <controls:ServerContainerControl />
-            </StackPanel>
+            <ListBox
+                Background="#00000000"
+                ItemsSource="{Binding ServerInfos}"
+                Padding="0">
+                <ListBox.ItemTemplate>
+                    <DataTemplate DataType="{x:Type models:ServerInfo}">
+                        <controls:ServerContainerControl ServerName="{Binding StatusData.Name}" />
+                    </DataTemplate>
+                </ListBox.ItemTemplate>
+            </ListBox>
         </ScrollViewer>
+
         <Border
             BorderThickness="2,0,0,0"
             CornerRadius="10"

Nebula.sln

@@ -2,6 +2,8 @@
 Microsoft Visual Studio Solution File, Format Version 12.00
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Nebula.Launcher", "Nebula.Launcher\Nebula.Launcher.csproj", "{D8F9728D-6153-4351-8BE2-52F7D54C299D}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Robust.LoaderApi", "Robust.LoaderApi\Robust.LoaderApi\Robust.LoaderApi.csproj", "{8AE91631-DE96-4A97-A255-058E27A7C3EA}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -12,5 +14,9 @@ Global
 		{D8F9728D-6153-4351-8BE2-52F7D54C299D}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{D8F9728D-6153-4351-8BE2-52F7D54C299D}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{D8F9728D-6153-4351-8BE2-52F7D54C299D}.Release|Any CPU.Build.0 = Release|Any CPU
+		{8AE91631-DE96-4A97-A255-058E27A7C3EA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{8AE91631-DE96-4A97-A255-058E27A7C3EA}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{8AE91631-DE96-4A97-A255-058E27A7C3EA}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{8AE91631-DE96-4A97-A255-058E27A7C3EA}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal