package com.fzzy.protocol.bhzn.v0.cmd;


import com.fzzy.api.utils.BytesUtil;
import com.fzzy.protocol.bhzn.v0.data.IoMessage;

/**
 * 根据接收到的信息进行封装
 *
 * @author vince
 */
public class ReMessageBuilder {


    public final static String ERROR_TAG = "3CF6";
    public static double FAULT_CHECK_TAG = 85.0;
    public static double MAX_TEMP = -50.0;
    public static double MIN_TEMP = 50.0;
    private final static ReMessageBuilder instance = new ReMessageBuilder();

    private ReMessageBuilder() {
    }

    public static ReMessageBuilder getInstance() {
        return instance;
    }

    /**
     * @param message
     * @return
     */
    public IoMessage buildMessage(String message) throws Exception {
        IoMessage ioMessage = new IoMessage();

        //转换为数字，高低位转换(4位)
        int i = BytesUtil.hexToBigInt(BytesUtil.tran_LH(message.substring(2, 6)));
        ioMessage.setPcAddr(i + "");
        i = BytesUtil.hexToBigInt(BytesUtil.tran_LH(message.substring(6, 10)));//高低位转换(4位)
        ioMessage.setAddr(i + "");

        ioMessage.setFunctionId(message.substring(10, 12));//功能码(2位)，不用高低位转换

        i = BytesUtil.hexToBigInt(message.substring(12, 14));//长度(1位)
        ioMessage.setLength(i);

        //获取消息体
        ioMessage.setContent(message.substring(14, 14 + (i * 2)));

        ioMessage.setCheck(message.substring(message.length() - 2));
        return ioMessage;
    }
}