/////////////////////////////////////////////////////////////////////////
 //
 //     www.ultima.smoce.net
 //     Name: Portování RuneBook
 //
 /////////////////////////////////////////////////////////////////////////
    using System;
    using Phoenix;
    using Phoenix.Communication;
    using Phoenix.WorldData;

    namespace Scripts.DarkParadise
    {
        /// <summary>
        /// Trin HQ - 7
        ///
        /// Nabit - 9
        /// </summary>
        public class Runebook
        {
            private DateTime requestTime;
            private uint? buttonId;

            [Command("runebook")]
            public void Use(uint destinationId)
            {
                UOItem book = UO.Backpack.AllItems.FindType(0x0FF0, 0x08A5);
                if (!book.Exist)
                    throw new ScriptErrorException("Runebook not found.");

                // Wait for gump
                buttonId = destinationId;
                requestTime = DateTime.Now;

                // Use runebook
                book.Use();
            }

            [ServerMessageHandler(0xB0)]
            public CallbackResult OnGenericGump(byte[] data, CallbackResult prevResult)
            {
                if (prevResult != CallbackResult.Normal)
                    return prevResult;

                if (buttonId != null && DateTime.Now - requestTime < TimeSpan.FromSeconds(6)) {
                    // Respond automatically
                    uint gumpSerial = ByteConverter.BigEndian.ToUInt32(data, 7);

                    PacketWriter reply = new PacketWriter(0xB1);
                    reply.WriteBlockSize();
                    reply.Write(World.Player.Serial);
                    reply.Write(gumpSerial);
                    reply.Write(buttonId.Value);
                    reply.Write(0); // Switches count
                    reply.Write(0); // Entries count

                    Core.SendToServer(reply.GetBytes());

                    // Do not pass gump further
                    buttonId = null;
                    return CallbackResult.Sent;
                }

                return CallbackResult.Normal;
            }
        }
    }