Some porting

Author: RealMeddsam

Froststrap.AvaloniaUI/AppData/CommonAppData.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Froststrap.AppData
+{
+    public abstract class CommonAppData
+    {
+        public virtual string ExecutableName { get; } = null!;
+
+        public virtual string BinaryType { get; } = null!;
+
+        public string StaticDirectory => Path.Combine(Paths.Versions, BinaryType);
+        public string DynamicDirectory => Path.Combine(Paths.Versions, DistributionState.VersionGuid);
+
+        public string Directory => App.Settings.Prop.StaticDirectory ? StaticDirectory : DynamicDirectory;
+
+        public string ExecutablePath => Path.Combine(Directory, ExecutableName);
+
+        public virtual JsonManager<DistributionState> DistributionStateManager { get; } = null!;
+
+        public DistributionState DistributionState => DistributionStateManager.Prop;
+
+        public List<string> ModManifest => DistributionState.ModManifest;
+    }
+}

Froststrap.AvaloniaUI/AppData/IAppData.cs

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+namespace Froststrap.AppData
+{
+    internal interface IAppData
+    {
+        string ProductName { get; }
+
+        string BinaryType { get; }
+
+        string RegistryName { get; }
+
+        string ProcessName { get; }
+
+        string ExecutableName { get; }
+
+        string StaticDirectory { get; }
+
+        string DynamicDirectory { get; }
+
+        string Directory { get; }
+
+        string ExecutablePath { get; }
+
+        JsonManager<DistributionState> DistributionStateManager { get; }
+
+        DistributionState DistributionState { get; }
+
+        List<string> ModManifest { get; }
+    }
+}

Froststrap.AvaloniaUI/AppData/RobloxPlayerData.cs

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+namespace Froststrap.AppData
+{
+    public class RobloxPlayerData : CommonAppData, IAppData
+    {
+        public string ProductName => "Roblox";
+
+        public override string BinaryType => "WindowsPlayer";
+
+        public string RegistryName => "RobloxPlayer";
+
+        public string ProcessName => "RobloxPlayerBeta";
+
+        public override string ExecutableName => App.RobloxPlayerAppName;
+
+        public override JsonManager<DistributionState> DistributionStateManager => App.PlayerState;
+    }
+}

Froststrap.AvaloniaUI/AppData/RobloxStudioData.cs

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+namespace Froststrap.AppData
+{
+    public class RobloxStudioData : CommonAppData, IAppData
+    {
+        public string ProductName => "Roblox Studio";
+
+        public override string BinaryType => "WindowsStudio64";
+
+        public string RegistryName => "RobloxStudio";
+
+        public string ProcessName => "RobloxStudioBeta";
+
+        public override string ExecutableName => App.RobloxStudioAppName;
+
+        public override JsonManager<DistributionState> DistributionStateManager => App.StudioState;
+    }
+}

Froststrap.AvaloniaUI/AssemblyInfo.cs

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+using System.Windows;
+
+[assembly: ThemeInfo(
+    ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
+                                     //(used if a resource is not found in the page,
+                                     // or application resource dictionaries)
+    ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
+                                              //(used if a resource is not found in the page,
+                                              // app, or any theme specific resource dictionaries)
+)]