1 files changed, 102 insertions, 0 deletions
diff --git a/Jellyfin.Data/Entities/Libraries/Chapter.cs b/Jellyfin.Data/Entities/Libraries/Chapter.cs
new file mode 100644
index 000000000..d9293c3cc
--- /dev/null
+++ b/Jellyfin.Data/Entities/Libraries/Chapter.cs
@@ -0,0 +1,102 @@
+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 chapter.
+    /// </summary>
+    public class Chapter : IHasConcurrencyToken
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Chapter"/> class.
+        /// </summary>
+        /// <param name="language">ISO-639-3 3-character language codes.</param>
+        /// <param name="startTime">The start time for this chapter.</param>
+        /// <param name="release">The release.</param>
+        public Chapter(string language, long startTime, Release release)
+        {
+            if (string.IsNullOrEmpty(language))
+            {
+                throw new ArgumentNullException(nameof(language));
+            }
+
+            Language = language;
+            StartTime = startTime;
+
+            if (release == null)
+            {
+                throw new ArgumentNullException(nameof(release));
+            }
+
+            release.Chapters.Add(this);
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Chapter"/> class.
+        /// </summary>
+        /// <remarks>
+        /// Default constructor. Protected due to required properties, but present because EF needs it.
+        /// </remarks>
+        protected Chapter()
+        {
+        }
+
+        /// <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 name.
+        /// </summary>
+        /// <remarks>
+        /// Max length = 1024.
+        /// </remarks>
+        [MaxLength(1024)]
+        [StringLength(1024)]
+        public string Name { 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 start time.
+        /// </summary>
+        /// <remarks>
+        /// Required.
+        /// </remarks>
+        public long StartTime { get; set; }
+
+        /// <summary>
+        /// Gets or sets the end time.
+        /// </summary>
+        public long? EndTime { get; set; }
+
+        /// <inheritdoc />
+        [ConcurrencyCheck]
+        public uint RowVersion { get; protected set; }
+
+        /// <inheritdoc />
+        public void OnSavingChanges()
+        {
+            RowVersion++;
+        }
+    }
+}