1 files changed, 63 insertions, 0 deletions
diff --git a/MediaBrowser.Controller/Library/ILocalSimilarItemsProvider.cs b/MediaBrowser.Controller/Library/ILocalSimilarItemsProvider.cs
new file mode 100644
index 0000000000..b8e41ec810
--- /dev/null
+++ b/MediaBrowser.Controller/Library/ILocalSimilarItemsProvider.cs
@@ -0,0 +1,63 @@
+using System;
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+using MediaBrowser.Controller.Entities;
+
+namespace MediaBrowser.Controller.Library;
+
+/// <summary>
+/// Provides similar items from the local library.
+/// Returns fully resolved BaseItems directly - no additional resolution needed.
+/// </summary>
+public interface ILocalSimilarItemsProvider : ISimilarItemsProvider
+{
+    /// <summary>
+    /// Determines whether the provider can handle items of the specified type.
+    /// </summary>
+    /// <param name="itemType">The item type.</param>
+    /// <returns><c>true</c> if the provider handles this item type; otherwise <c>false</c>.</returns>
+    bool Supports(Type itemType);
+
+    /// <summary>
+    /// Gets similar items from the local library.
+    /// </summary>
+    /// <param name="item">The source item to find similar items for.</param>
+    /// <param name="query">The query options (user, limit, exclusions, etc.).</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    /// <returns>The list of similar items from the library.</returns>
+    Task<IReadOnlyList<BaseItem>> GetSimilarItemsAsync(
+        BaseItem item,
+        SimilarItemsQuery query,
+        CancellationToken cancellationToken);
+}
+
+/// <summary>
+/// Provides similar items from the local library for a specific item type.
+/// Returns fully resolved BaseItems directly - no additional resolution needed.
+/// </summary>
+/// <typeparam name="TItemType">The type of item this provider handles.</typeparam>
+public interface ILocalSimilarItemsProvider<TItemType> : ILocalSimilarItemsProvider
+    where TItemType : BaseItem
+{
+    /// <summary>
+    /// Gets similar items from the local library.
+    /// </summary>
+    /// <param name="item">The source item to find similar items for.</param>
+    /// <param name="query">The query options (user, limit, exclusions, etc.).</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    /// <returns>The list of similar items from the library.</returns>
+    Task<IReadOnlyList<BaseItem>> GetSimilarItemsAsync(
+        TItemType item,
+        SimilarItemsQuery query,
+        CancellationToken cancellationToken);
+
+    bool ILocalSimilarItemsProvider.Supports(Type itemType)
+        => typeof(TItemType).IsAssignableFrom(itemType);
+
+    Task<IReadOnlyList<BaseItem>> ILocalSimilarItemsProvider.GetSimilarItemsAsync(
+        BaseItem item,
+        SimilarItemsQuery query,
+        CancellationToken cancellationToken)
+        => GetSimilarItemsAsync((TItemType)item, query, cancellationToken);
+}