package com.dy.common.mw.protocol.p206V2.parse.global;

import com.dy.common.mw.protocol.p206V2.ProtocolConstantV206V2;
import com.dy.common.util.ByteUtil;
import com.dy.common.util.ByteUtilUnsigned;
import com.dy.common.util.CRC8_for_2_0;
import com.dy.common.util.DateTime;

public class GlCreate {

    public static byte createHead(byte[] bsHead) throws Exception {
        byte index = 0;
        bsHead[index++] = ProtocolConstantV206V2.P_Head_Byte;
        bsHead[index++] = 0;//帧长度
        bsHead[index++] = ProtocolConstantV206V2.protocolVer.byteValue();
        bsHead[index] = ProtocolConstantV206V2.P_Head_Byte;
        return index ;
    }

    public static void createRtuAddr(String rtuAddr, byte[] bs, int index) throws Exception {
        String rtuAddr1 = rtuAddr.substring(0, 6) ;
        String rtuAddr2 = rtuAddr.substring(6) ;

        ByteUtil.string2BCD_BE(bs, rtuAddr1, index) ;
        index += 3 ;

        Integer rtuAddr2Int = Integer.parseInt(rtuAddr2) ;
        ByteUtilUnsigned.short2Bytes_LE(bs, rtuAddr2Int.shortValue(), index);
    }

    public static void createPw(byte[] bs, int index) throws Exception {
        bs[index] = 0;
        bs[index + 1] = 0;
    }

    public static void createTp(byte[] bs, int index) throws Exception {
        ByteUtil.string2BCD_LE(bs, DateTime.yyMMddhhmmss(), index) ;
    }

    public static void createTp(String yyMMddhhmmss, byte[] bs, int index) throws Exception {
        ByteUtil.string2BCD_LE(bs, yyMMddhhmmss, index) ;
    }

    public static void createLen(byte[] bsNoTail) throws Exception {
        int len = bsNoTail.length - ProtocolConstantV206V2.lenHead2ctrl;
        bsNoTail[ProtocolConstantV206V2.dataLenIndex] = (byte)len ;
    }


    /**
     * 生成IC卡编码
     * 6字节BCD码（12位行政区划） + 2字节HEX
     * @param icCardNo
     * @param bs
     * @param index
     * @throws Exception
     */
    public static void createIcCardNo(String icCardNo, byte[] bs, int index) throws Exception {
        String icCardNo1 = icCardNo.substring(0, 12) ;
        String icCardNo2 = icCardNo.substring(12) ;

        Integer icCardNo2Int = Integer.parseInt(icCardNo2) ;
        ByteUtilUnsigned.short2Bytes_LE(bs, icCardNo2Int.shortValue(), index);

        index += 2 ;
        ByteUtil.string2BCD_LE(bs, icCardNo1, index) ;
    }

    public static byte[] createCrcTail(byte[] bsNoTail) throws Exception {
        int crc = new CRC8_for_2_0().CRC8(bsNoTail, ProtocolConstantV206V2.ctrlIndex, bsNoTail.length -1) ;
        byte[] bytes = new byte[ProtocolConstantV206V2.lenTail] ;
        bytes[0] = (byte)crc ;
        bytes[1] = ProtocolConstantV206V2.P_Tail_Byte ;
        return bytes ;
    }
}