1 files changed, 57 insertions, 0 deletions
diff --git a/Jellyfin.Data/Entities/Libraries/BookMetadata.cs b/Jellyfin.Data/Entities/Libraries/BookMetadata.cs
new file mode 100644
index 000000000..4a3d290f0
--- /dev/null
+++ b/Jellyfin.Data/Entities/Libraries/BookMetadata.cs
@@ -0,0 +1,57 @@
+#pragma warning disable CA2227
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations.Schema;
+using Jellyfin.Data.Interfaces;
+
+namespace Jellyfin.Data.Entities.Libraries
+{
+    /// <summary>
+    /// An entity containing metadata for a book.
+    /// </summary>
+    public class BookMetadata : ItemMetadata, IHasCompanies
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="BookMetadata"/> class.
+        /// </summary>
+        /// <param name="title">The title or name of the object.</param>
+        /// <param name="language">ISO-639-3 3-character language codes.</param>
+        /// <param name="book">The book.</param>
+        public BookMetadata(string title, string language, Book book) : base(title, language)
+        {
+            if (book == null)
+            {
+                throw new ArgumentNullException(nameof(book));
+            }
+
+            book.BookMetadata.Add(this);
+
+            Publishers = new HashSet<Company>();
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="BookMetadata"/> class.
+        /// </summary>
+        /// <remarks>
+        /// Default constructor. Protected due to required properties, but present because EF needs it.
+        /// </remarks>
+        protected BookMetadata()
+        {
+        }
+
+        /// <summary>
+        /// Gets or sets the ISBN.
+        /// </summary>
+        public long? Isbn { get; set; }
+
+        /// <summary>
+        /// Gets or sets a collection of the publishers for this book.
+        /// </summary>
+        public virtual ICollection<Company> Publishers { get; protected set; }
+
+        /// <inheritdoc />
+        [NotMapped]
+        public ICollection<Company> Companies => Publishers;
+    }
+}