1 files changed, 83 insertions, 0 deletions
diff --git a/Jellyfin.Data/Entities/Group.cs b/Jellyfin.Data/Entities/Group.cs
new file mode 100644
index 000000000..14da0bb15
--- /dev/null
+++ b/Jellyfin.Data/Entities/Group.cs
@@ -0,0 +1,83 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using Jellyfin.Data.Enums;
+using Jellyfin.Data.Interfaces;
+
+namespace Jellyfin.Data.Entities
+{
+    /// <summary>
+    /// An entity representing a group.
+    /// </summary>
+    public class Group : IHasPermissions, IHasConcurrencyToken
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Group"/> class.
+        /// </summary>
+        /// <param name="name">The name of the group.</param>
+        public Group(string name)
+        {
+            if (string.IsNullOrEmpty(name))
+            {
+                throw new ArgumentNullException(nameof(name));
+            }
+
+            Name = name;
+            Id = Guid.NewGuid();
+
+            Permissions = new HashSet<Permission>();
+            Preferences = new HashSet<Preference>();
+        }
+
+        /// <summary>
+        /// Gets the id of this group.
+        /// </summary>
+        /// <remarks>
+        /// Identity, Indexed, Required.
+        /// </remarks>
+        public Guid Id { get; private set; }
+
+        /// <summary>
+        /// Gets or sets the group's name.
+        /// </summary>
+        /// <remarks>
+        /// Required, Max length = 255.
+        /// </remarks>
+        [MaxLength(255)]
+        [StringLength(255)]
+        public string Name { get; set; }
+
+        /// <inheritdoc />
+        [ConcurrencyCheck]
+        public uint RowVersion { get; private set; }
+
+        /// <summary>
+        /// Gets a collection containing the group's permissions.
+        /// </summary>
+        public virtual ICollection<Permission> Permissions { get; private set; }
+
+        /// <summary>
+        /// Gets a collection containing the group's preferences.
+        /// </summary>
+        public virtual ICollection<Preference> Preferences { get; private set; }
+
+        /// <inheritdoc/>
+        public bool HasPermission(PermissionKind kind)
+        {
+            return Permissions.First(p => p.Kind == kind).Value;
+        }
+
+        /// <inheritdoc/>
+        public void SetPermission(PermissionKind kind, bool value)
+        {
+            Permissions.First(p => p.Kind == kind).Value = value;
+        }
+
+        /// <inheritdoc />
+        public void OnSavingChanges()
+        {
+            RowVersion++;
+        }
+    }
+}