import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.ByteToMessageDecoder;

import java.io.IOException;
import java.util.List;

public class T1Decoder extends ByteToMessageDecoder {

    @Override
    protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
        in.markReaderIndex();
        try{
            System.out.println("t1 decoding! "+in);
            int id = in.readInt();
            if (id>255){
                throw new IOException("Bad id!");
            }else {
                T1Packet t1Packet = new T1Packet(id);
                t1Packet.read(in);
                out.add(t1Packet);
            }
        }catch (Exception e){
            in.resetReaderIndex();
            return;
        }
    }
}