add option to search Windows GameConfigStore for the game executable

Author: tekgator

GameLib.Core/LauncherOptions.cs

@@ -3,11 +3,17 @@
 public class LauncherOptions
 {
     /// <summary>
-    /// Define if Launcher plugin should use local catalog data to get more detailed information about specific games
+    /// Define if Launcher plugin should use local catalog data (if present) 
+    /// to get more detailed information about specific games
     /// Note: Can in increase load time for the plugin
     /// </summary>
     public bool LoadLocalCatalogData { get; init; } = true;
 
+    /// <summary>
+    /// If executable cannot be found via the "regular" way try searching Windows GameConfigStore
+    /// </summary>
+    public bool SearchGameConfigStore { get; init; } = true;
+
     /// <summary>
     /// Define if Launcher plugin should use online query's to get more detailed information about specific games
     /// Note: Can in increase load time for the plugin

GameLib.Core/Util/RegistryUtil.cs

@@ -24,6 +24,43 @@ public static class RegistryUtil
         return executablePath;
     }
 
+    /// <summary>
+    /// Search the Windows GameConfigStore for the game executable
+    /// NOTE: this detection mode does not work for all games, also
+    /// the game must have started at least once to appear in GameConfigStore
+    /// </summary>
+    /// <param name="installDir">Installation directory of the game</param>
+    /// <returns>The path of the executable; <see langword="null"/> if not found</returns>
+    public static string? SearchGameConfigStore(string installDir)
+    {
+        const string RegistryPath = @"System\GameConfigStore\Children";
+
+        using var regKey = GetKey(RegistryHive.CurrentUser, RegistryPath, true);
+
+        if (regKey is null)
+        {
+            return null;
+        }
+
+        foreach (var subKey in regKey.GetSubKeyNames())
+        {
+            var executablePath = PathUtil.Sanitize(GetValue(RegistryHive.CurrentUser, $@"{RegistryPath}\{subKey}", "MatchedExeFullPath", string.Empty));
+            if (string.IsNullOrEmpty(executablePath))
+            {
+                continue;
+            }
+
+            if (executablePath.StartsWith(installDir, StringComparison.OrdinalIgnoreCase) &&
+                File.Exists(executablePath) &&
+                PathUtil.IsExecutable(executablePath))
+            {
+                return executablePath;
+            }
+        }
+
+        return null;
+    }
+
     /// <summary>
     /// Gets the registry key for the passed Hive and KeyName
     /// Firstly it checks in the 32bit environment, if no key found in the 64bit environment