add registry saving and launching

RobloxLegacy/AppData/IAppData.cs

@@ -2,6 +2,7 @@
 
 public interface IAppData
 {
-    string Name { get; }
+    string ExecutableName { get; }
+    string PackageName { get; }
     Dictionary<string, string> PackageFiles { get; }
 }

RobloxLegacy/AppData/StudioData.cs

@@ -2,7 +2,8 @@
 
 public class StudioData : IAppData
 {
-    public string Name => "WindowsStudio64";
+    public string ExecutableName => "RobloxStudioBeta.exe";
+    public string PackageName => "WindowsStudio64";
     public Dictionary<string, string> PackageFiles { get; } = new()
     {
         ["RobloxStudio.zip"]                    = "",

RobloxLegacy/Program.cs

@@ -2,4 +2,5 @@
 using RobloxLegacy.AppData;
 
 using var manager = new VersionManager(new StudioData());
-await manager.InstallPackage();
+await manager.InstallPackage(); // update studio if needed
+manager.LaunchApp();

RobloxLegacy/RobloxLegacy.csproj

@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>net8.0</TargetFramework>
+        <TargetFramework>net8.0-windows</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
     </PropertyGroup>

RobloxLegacy/VersionManager.cs

@@ -1,4 +1,5 @@
-using Newtonsoft.Json;
+using System.Diagnostics;
+using Newtonsoft.Json;
 using RobloxLegacy.AppData;
 using RobloxLegacy.Utilities;
 using ICSharpCode.SharpZipLib.Zip;
@@ -18,12 +19,15 @@ public class VersionManager : IDisposable
 {
     private static readonly HttpClient Client = new();
     private const string CdnUrl = "https://setup.rbxcdn.com";
+    private string? _currentVersion;
+    
     private readonly string _tempPath = Path.Combine(Path.GetTempPath(), $"RobloxLegacy.{Guid.NewGuid().ToString()}");
     private readonly IAppData _appData;
 
     public VersionManager(IAppData appData)
     {
         Directory.CreateDirectory(_tempPath);
+        _currentVersion = Registry.GetVersion(appData.PackageName);
         _appData = appData;
     }
 
@@ -35,7 +39,7 @@ public class VersionManager : IDisposable
 
     private async Task<VersionData?> GetLatestVersion()
     {
-        var url = $"https://clientsettings.roblox.com/v2/client-version/{_appData.Name}/channel/LIVE";
+        var url = $"https://clientsettings.roblox.com/v2/client-version/{_appData.PackageName}/channel/LIVE";
         var response = await Client.GetAsync(url);
         if (!response.IsSuccessStatusCode) // just to be safe
             return null;
@@ -53,10 +57,13 @@ public class VersionManager : IDisposable
     public async Task InstallPackage()
     {
         var version = await GetLatestVersion();
+
         if (version == null)
             throw new Exception("No version data found");
+        if (version.UploadHash == _currentVersion)
+            return;
 
-        Logger.Info($"Installing {_appData.Name} version {version.Version}");
+        Logger.Info($"Installing {_appData.PackageName} version {version.Version}");
         foreach (var file in _appData.PackageFiles)
         {
             try
@@ -74,6 +81,25 @@ public class VersionManager : IDisposable
                 Logger.Error($"Failed to download {file.Key}");
             }
         }
+
+        _currentVersion = version.UploadHash;
+        Registry.SaveVersion(_appData.PackageName, version.UploadHash);
+    }
+
+    public void LaunchApp()
+    {
+        Logger.Info($"Launching {_appData.PackageName}...");
+        if(string.IsNullOrEmpty(_currentVersion))
+            throw new Exception("No version data found");
+        
+        var startInfo = new ProcessStartInfo()
+        {
+            FileName = _appData.ExecutableName,
+            WorkingDirectory = GetVersionPath(_currentVersion),
+            UseShellExecute = true
+        };
+        
+        Process.Start(startInfo);
     }
 
     public void Dispose()