package com.zy.acs.gateway.handler;

import com.zy.acs.gateway.AbstractInboundHandler;
import com.zy.acs.gateway.cache.ChannelCache;
import com.zy.acs.gateway.config.SystemProperties;
import com.zy.acs.gateway.constant.PacErrorType;
import com.zy.acs.gateway.domain.AgvPackage;
import com.zy.acs.gateway.utils.ValidUtil;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufUtil;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

/**
 * 协议校验码验证handler
 * Created by vincent on 2019-04-02
 */
@Component("validateHandler")
@ChannelHandler.Sharable
public class ValidateHandler extends AbstractInboundHandler<AgvPackage> {

    private static final Logger log = LoggerFactory.getLogger(ValidateHandler.class);

    @Autowired
    private SystemProperties systemProperties;

    @Override
    protected boolean channelRead0(ChannelHandlerContext ctx, AgvPackage pac) {
        if (pac.isErrorPac()) {
            log.error("收到一个异常包[{}]， 原始消息[{}]", pac.getPacErrorType().getDes(), pac.getSourceHexStr());
            return false;
        }
        ByteBuf buf = pac.getSourceBuff();
        if (systemProperties.isPrintPacLog()) {
            log.info("Agv [{}] 上行 [{}] <<< {}", pac.getHeader().getUniqueNo(), pac.getHeader().getProtocolType().getDes(), ByteBufUtil.hexDump(buf).toUpperCase());
        }
        // crc 计算包含帧头
        if(!ValidUtil.validPac(pac)) {
            pac.setErrorPac(Boolean.TRUE).setPacErrorType(PacErrorType.PAC_VALID_ERROR);
            log.error("收到一个校验异常包：{}", pac.toLogString());
            return false;
        }

                ChannelCache.setChannel(pac.getHeader().getUniqueNo(), ctx.channel());


        return true;
    }


}