1 files changed, 83 insertions, 0 deletions
diff --git a/Jellyfin.Data/Entities/Libraries/MetadataProviderId.cs b/Jellyfin.Data/Entities/Libraries/MetadataProviderId.cs
new file mode 100644
index 000000000..fcfb35bfa
--- /dev/null
+++ b/Jellyfin.Data/Entities/Libraries/MetadataProviderId.cs
@@ -0,0 +1,83 @@
+using System;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using Jellyfin.Data.Interfaces;
+
+namespace Jellyfin.Data.Entities.Libraries
+{
+    /// <summary>
+    /// An entity representing a unique identifier for a metadata provider.
+    /// </summary>
+    public class MetadataProviderId : IHasConcurrencyToken
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="MetadataProviderId"/> class.
+        /// </summary>
+        /// <param name="providerId">The provider id.</param>
+        /// <param name="itemMetadata">The metadata entity.</param>
+        public MetadataProviderId(string providerId, ItemMetadata itemMetadata)
+        {
+            if (string.IsNullOrEmpty(providerId))
+            {
+                throw new ArgumentNullException(nameof(providerId));
+            }
+
+            ProviderId = providerId;
+
+            if (itemMetadata == null)
+            {
+                throw new ArgumentNullException(nameof(itemMetadata));
+            }
+
+            itemMetadata.Sources.Add(this);
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="MetadataProviderId"/> class.
+        /// </summary>
+        /// <remarks>
+        /// Default constructor. Protected due to required properties, but present because EF needs it.
+        /// </remarks>
+        protected MetadataProviderId()
+        {
+        }
+
+        /// <summary>
+        /// Gets or sets the id.
+        /// </summary>
+        /// <remarks>
+        /// Identity, Indexed, Required.
+        /// </remarks>
+        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+        public int Id { get; protected set; }
+
+        /// <summary>
+        /// Gets or sets the provider id.
+        /// </summary>
+        /// <remarks>
+        /// Required, Max length = 255.
+        /// </remarks>
+        [Required]
+        [MaxLength(255)]
+        [StringLength(255)]
+        public string ProviderId { get; set; }
+
+        /// <inheritdoc />
+        [ConcurrencyCheck]
+        public uint RowVersion { get; set; }
+
+        /// <summary>
+        /// Gets or sets the metadata provider.
+        /// </summary>
+        /// <remarks>
+        /// Required.
+        /// </remarks>
+        public virtual MetadataProvider MetadataProvider { get; set; }
+
+        /// <inheritdoc />
+        public void OnSavingChanges()
+        {
+            RowVersion++;
+        }
+    }
+}