include external IDs and URLs for book providers

1 files changed, 25 insertions, 0 deletions

diff --git a/MediaBrowser.Providers/Books/Isbn/ISBNExternalUrlProvider.cs b/MediaBrowser.Providers/Books/Isbn/ISBNExternalUrlProvider.cs
new file mode 100644
index 0000000000..9d7b1ff208
--- /dev/null
+++ b/MediaBrowser.Providers/Books/Isbn/ISBNExternalUrlProvider.cs
@@ -0,0 +1,25 @@
+using System.Collections.Generic;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Providers;
+using MediaBrowser.Model.Entities;
+
+namespace MediaBrowser.Providers.Books.Isbn;
+
+/// <inheritdoc/>
+public class IsbnExternalUrlProvider : IExternalUrlProvider
+{
+    /// <inheritdoc/>
+    public string Name => "ISBN";
+
+    /// <inheritdoc />
+    public IEnumerable<string> GetExternalUrls(BaseItem item)
+    {
+        if (item.TryGetProviderId("ISBN", out var externalId))
+        {
+            if (item is Book)
+            {
+                yield return $"https://search.worldcat.org/search?q=bn:{externalId}";
+            }
+        }
+    }
+}