1 files changed, 167 insertions, 0 deletions
diff --git a/Jellyfin.Data/Entities/Libraries/ItemMetadata.cs b/Jellyfin.Data/Entities/Libraries/ItemMetadata.cs
new file mode 100644
index 000000000..1d2dc0f66
--- /dev/null
+++ b/Jellyfin.Data/Entities/Libraries/ItemMetadata.cs
@@ -0,0 +1,167 @@
+#pragma warning disable CA2227
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using Jellyfin.Data.Interfaces;
+
+namespace Jellyfin.Data.Entities.Libraries
+{
+    /// <summary>
+    /// An abstract class that holds metadata.
+    /// </summary>
+    public abstract class ItemMetadata : IHasArtwork, IHasConcurrencyToken
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ItemMetadata"/> class.
+        /// </summary>
+        /// <param name="title">The title or name of the object.</param>
+        /// <param name="language">ISO-639-3 3-character language codes.</param>
+        protected ItemMetadata(string title, string language)
+        {
+            if (string.IsNullOrEmpty(title))
+            {
+                throw new ArgumentNullException(nameof(title));
+            }
+
+            if (string.IsNullOrEmpty(language))
+            {
+                throw new ArgumentNullException(nameof(language));
+            }
+
+            Title = title;
+            Language = language;
+            DateAdded = DateTime.UtcNow;
+            DateModified = DateAdded;
+
+            PersonRoles = new HashSet<PersonRole>();
+            Genres = new HashSet<Genre>();
+            Artwork = new HashSet<Artwork>();
+            Ratings = new HashSet<Rating>();
+            Sources = new HashSet<MetadataProviderId>();
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ItemMetadata"/> class.
+        /// </summary>
+        /// <remarks>
+        /// Default constructor. Protected due to being abstract.
+        /// </remarks>
+        protected ItemMetadata()
+        {
+        }
+
+        /// <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 title.
+        /// </summary>
+        /// <remarks>
+        /// Required, Max length = 1024.
+        /// </remarks>
+        [Required]
+        [MaxLength(1024)]
+        [StringLength(1024)]
+        public string Title { get; set; }
+
+        /// <summary>
+        /// Gets or sets the original title.
+        /// </summary>
+        /// <remarks>
+        /// Max length = 1024.
+        /// </remarks>
+        [MaxLength(1024)]
+        [StringLength(1024)]
+        public string OriginalTitle { get; set; }
+
+        /// <summary>
+        /// Gets or sets the sort title.
+        /// </summary>
+        /// <remarks>
+        /// Max length = 1024.
+        /// </remarks>
+        [MaxLength(1024)]
+        [StringLength(1024)]
+        public string SortTitle { get; set; }
+
+        /// <summary>
+        /// Gets or sets the language.
+        /// </summary>
+        /// <remarks>
+        /// Required, Min length = 3, Max length = 3.
+        /// ISO-639-3 3-character language codes.
+        /// </remarks>
+        [Required]
+        [MinLength(3)]
+        [MaxLength(3)]
+        [StringLength(3)]
+        public string Language { get; set; }
+
+        /// <summary>
+        /// Gets or sets the release date.
+        /// </summary>
+        public DateTimeOffset? ReleaseDate { get; set; }
+
+        /// <summary>
+        /// Gets or sets the date added.
+        /// </summary>
+        /// <remarks>
+        /// Required.
+        /// </remarks>
+        public DateTime DateAdded { get; protected set; }
+
+        /// <summary>
+        /// Gets or sets the date modified.
+        /// </summary>
+        /// <remarks>
+        /// Required.
+        /// </remarks>
+        public DateTime DateModified { get; set; }
+
+        /// <summary>
+        /// Gets or sets the row version.
+        /// </summary>
+        /// <remarks>
+        /// Required, ConcurrencyToken.
+        /// </remarks>
+        [ConcurrencyCheck]
+        public uint RowVersion { get; set; }
+
+        /// <summary>
+        /// Gets or sets a collection containing the person roles for this item.
+        /// </summary>
+        public virtual ICollection<PersonRole> PersonRoles { get; protected set; }
+
+        /// <summary>
+        /// Gets or sets a collection containing the generes for this item.
+        /// </summary>
+        public virtual ICollection<Genre> Genres { get; protected set; }
+
+        /// <inheritdoc />
+        public virtual ICollection<Artwork> Artwork { get; protected set; }
+
+        /// <summary>
+        /// Gets or sets a collection containing the ratings for this item.
+        /// </summary>
+        public virtual ICollection<Rating> Ratings { get; protected set; }
+
+        /// <summary>
+        /// Gets or sets a collection containing the metadata sources for this item.
+        /// </summary>
+        public virtual ICollection<MetadataProviderId> Sources { get; protected set; }
+
+        /// <inheritdoc />
+        public void OnSavingChanges()
+        {
+            RowVersion++;
+        }
+    }
+}