using System.Linq;

namespace OpenMetaverse.TestClient
{
    public class AttachmentsCommand : Command
    {
        public AttachmentsCommand(TestClient testClient)
        {
            Client = testClient;
            Name = "attachments";
            Description = "Prints a list of the currently known agent attachments";
            Category = CommandCategory.Appearance;
        }

        public override string Execute(string[] args, UUID fromAgentID)
        {
            var attachments = (from kvp in Client.Network.CurrentSim.ObjectsPrimitives 
                where kvp.Value != null where kvp.Value.ParentID == Client.Self.LocalID select kvp.Value).ToList();

            foreach (var prim in attachments)
            {
                var point = StateToAttachmentPoint(prim.PrimData.State);

                // TODO: Fetch properties for the objects with missing property sets, so we can show names
                Logger.Log($"[Attachment @ {point}] LocalID: {prim.LocalID} UUID: {prim.ID} Offset: {prim.Position}", 
                    Helpers.LogLevel.Info, Client);
            }

            return $"Found {attachments.Count} attachments";
        }

        public static AttachmentPoint StateToAttachmentPoint(uint state)
        {
            const uint ATTACHMENT_MASK = 0xF0;
            uint fixedState = (((byte)state & ATTACHMENT_MASK) >> 4) | (((byte)state & ~ATTACHMENT_MASK) << 4);
            return (AttachmentPoint)fixedState;
        }
    }
}