package com.casic.server;

import com.casic.enums.RelaySwitchEnums;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.ByteToMessageDecoder;
import lombok.extern.slf4j.Slf4j;

import java.nio.charset.Charset;
import java.util.List;

/**
 * 自定义解码器
 *
 * @description: 将从接口取到的数据编码
 * @author: cz
 * @create: 2023-5-10
 **/
@Slf4j
public class ReceiverDecoder extends ByteToMessageDecoder implements RelaySwitchEnums {


//    final ChannelGroup channels =
//            new DefaultChannelGroup(GlobalEventExecutor.INSTANCE);


    @Override
    protected void decode(ChannelHandlerContext ctx, ByteBuf msg, List<Object> out) throws Exception {
        if (msg.toString(Charset.defaultCharset()).toLowerCase().contains("aaaa")) {
            pareDeviceHex(msg);
        }
//        if(msg.readableBytes()>2){
//            out.add(msg);
//        }
    }

//    @Override
//    public void channelActive(ChannelHandlerContext ctx) throws Exception {
//        channels.add(ctx.channel());
//        super.channelActive(ctx);
//    }
//
//    @Override
//    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
//        super.channelRead(ctx, msg);
//        ByteBuf out = ByteBufAllocator.DEFAULT.heapBuffer();
//        String switchConent = preFix + 1 + "," + 1 + postFix;
//        out.writeBytes(switchConent.getBytes());
//        channels.forEach(
//                channel ->{
//                   if(channel!=ctx.channel()) {
//                       channel.writeAndFlush(out);
//                   }
//                }
//        );
//    }

    private static void pareDeviceHex(ByteBuf byteBuf) {
        //去掉补位
        log.info(" String : " + byteBuf.toString(Charset.defaultCharset()));
        String devcode = byteBuf.slice(0, 15).toString(Charset.defaultCharset());
        log.info(" devcode : " + devcode);
        byteBuf.resetReaderIndex();//重置位判断
        String valueStr = byteBuf.slice(26, 4).toString(Charset.defaultCharset());
        log.info(" valueStr : " + valueStr);
        long defaultValue = Long.valueOf(valueStr);
        log.info("设备编号为" + devcode + ",设备数据为" + defaultValue);
//        System.out.println("设备编号为" + devcode + ",设备数据为" + defaultValue);
    }

}