Fix unchecked input

Emby.Server.Implementations/Library/LibraryManager.cs

@@ -2956,7 +2956,7 @@ namespace Emby.Server.Implementations.Library
             throw new InvalidOperationException();
         }
 
-        public async Task AddVirtualFolder(string name, string collectionType, LibraryOptions options, bool refreshLibrary)
+        public async Task AddVirtualFolder(string name, CollectionTypeOptions? collectionType, LibraryOptions options, bool refreshLibrary)
         {
             if (string.IsNullOrWhiteSpace(name))
             {
@@ -2990,9 +2990,9 @@ namespace Emby.Server.Implementations.Library
             {
                 Directory.CreateDirectory(virtualFolderPath);
 
-                if (!string.IsNullOrEmpty(collectionType))
+                if (collectionType != null)
                 {
-                    var path = Path.Combine(virtualFolderPath, collectionType + ".collection");
+                    var path = Path.Combine(virtualFolderPath, collectionType.ToString() + ".collection");
 
                     File.WriteAllBytes(path, Array.Empty<byte>());
                 }

Jellyfin.Api/Controllers/LibraryStructureController.cs

@@ -75,7 +75,7 @@ namespace Jellyfin.Api.Controllers
         [ProducesResponseType(StatusCodes.Status204NoContent)]
         public async Task<ActionResult> AddVirtualFolder(
             [FromQuery] string? name,
-            [FromQuery] string? collectionType,
+            [FromQuery] CollectionTypeOptions? collectionType,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] paths,
             [FromBody] AddVirtualFolderDto? libraryOptionsDto,
             [FromQuery] bool refreshLibrary = false)

MediaBrowser.Controller/Library/ILibraryManager.cs

@@ -542,7 +542,7 @@ namespace MediaBrowser.Controller.Library
 
         Guid GetMusicGenreId(string name);
 
-        Task AddVirtualFolder(string name, string collectionType, LibraryOptions options, bool refreshLibrary);
+        Task AddVirtualFolder(string name, CollectionTypeOptions? collectionType, LibraryOptions options, bool refreshLibrary);
 
         Task RemoveVirtualFolder(string name, bool refreshLibrary);
 

MediaBrowser.Model/Entities/CollectionTypeOptions.cs

@@ -0,0 +1,15 @@
+#pragma warning disable CS1591
+
+namespace MediaBrowser.Model.Entities
+{
+    public enum CollectionTypeOptions
+    {
+        Movies,
+        Music,
+        TvShows,
+        Books,
+        HomeVideos,
+        MusicVideos,
+        Mixed
+    }
+}