RT

dotnet/AipsRT/Model/Whiteboard/Whiteboard.cs

@@ -7,6 +7,9 @@ public class Whiteboard
     public Guid WhiteboardId { get; set; }
     
     public Guid OwnerId { get; set; }
+    
+    public HashSet<Guid> AcceptedUsers { get; } = new();
+    public HashSet<Guid> PendingUsers { get; } = new();
 
     public List<Shape> Shapes { get; } = [];
 
@@ -38,4 +41,16 @@ public class Whiteboard
         Shapes.Add(shape);
         TextShapes.Add(shape);
     }
+    
+    public void AddPendingUser(Guid userId) => PendingUsers.Add(userId);
+
+    public void AcceptUser(Guid userId)
+    {
+        PendingUsers.Remove(userId);
+        AcceptedUsers.Add(userId);
+    }
+
+    public void RejectUser(Guid userId) => PendingUsers.Remove(userId);
+
+    public bool IsAccepted(Guid userId) => AcceptedUsers.Contains(userId);
 }