package org.yzh.protocol.t808.T8900Lock;

import io.github.yezhihao.protostar.annotation.Field;
import lombok.Data;

@Data
public class T8900SetDeviceID {
    @Field(index = 0, length = 2, desc = "锁ID")
    private byte[] lockId;

    @Field(index = 1, length = 1, desc = "命令类型")
    private byte commandType = 0x0A;

    @Field(index = 2, length = 2, desc = "新锁ID")
    private byte[] NewlockId;

    @Field(index = 3, length = 1, desc = "校验码")
    private byte checksum;

    /**
     * 计算校验和：(aa + aa + 02 + cc) & 0xFF
     */
    public byte calculateChecksum() {
        int sum = lockId[0] & 0xFF;
        sum += lockId[1] & 0xFF;
        sum += commandType & 0xFF;
        sum += NewlockId[0] & 0xFF;
        sum += NewlockId[1] & 0xFF;
        this.checksum = (byte) (sum & 0xFF);
        return this.checksum;// (byte) (sum & 0xFF); // 取低8位
    }
}