using System;
using Server.Network;

namespace Server.Misc
{
  public class ProtocolExtensions
  {
    private static PacketHandler[] m_Handlers = new PacketHandler[0x100];

    public static void Initialize()
    {
      PacketHandlers.Register(0xF0, 0, false, DecodeBundledPacket);
    }

    public static void Register(int packetID, bool ingame, OnPacketReceive onReceive)
    {
      m_Handlers[packetID] = new PacketHandler(packetID, 0, ingame, onReceive);
    }

    public static PacketHandler GetHandler(int packetID)
    {
      if (packetID >= 0 && packetID < m_Handlers.Length)
        return m_Handlers[packetID];

      return null;
    }

    public static void DecodeBundledPacket(NetState state, PacketReader pvSrc)
    {
      int packetID = pvSrc.ReadByte();

      PacketHandler ph = GetHandler(packetID);

      if (ph != null)
      {
        if (ph.Ingame && state.Mobile == null)
        {
          Console.WriteLine(
            "Client: {0}: Sent ingame packet (0xF0x{1:X2}) before having been attached to a mobile", state,
            packetID);
          state.Dispose();
        }
        else if (ph.Ingame && state.Mobile.Deleted)
        {
          state.Dispose();
        }
        else
        {
          ph.OnReceive(state, pvSrc);
        }
      }
    }
  }

  public abstract class ProtocolExtension : Packet
  {
    public ProtocolExtension(int packetID, int capacity) : base(0xF0)
    {
      EnsureCapacity(4 + capacity);

      m_Stream.Write((byte)packetID);
    }
  }
}