package com.jsowell.netty.domain;

import com.jsowell.common.util.BytesUtil;
import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.extern.slf4j.Slf4j;

import java.nio.charset.StandardCharsets;
import java.util.Arrays;

@Slf4j
@Data
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class ChargingPileMessage {
    private String header; // 包头 (3字节)
    private int length; // 长度 (2字节)
    private int physicalId; // 物理ID (4字节)
    private int messageId; // 消息ID (2字节)
    private byte command; // 命令 (1字节)
    private byte[] data; // 数据 (n字节)
    private int checksum; // 校验 (2字节)

    // 从字节数组解析消息
    public static ChargingPileMessage parseMessage(byte[] messageBytes) {
        log.info("parseMessage:{}", BytesUtil.binary(messageBytes, 16));
        // 读取包头
        byte[] headerBytes = Arrays.copyOfRange(messageBytes, 0, 3);
        System.out.println(new String(headerBytes, StandardCharsets.UTF_8));

        // 读取长度
        byte[] lengthBytes = {messageBytes[3], messageBytes[4]};
        System.out.println(BytesUtil.bcd2StrLittle(lengthBytes));

        // 读取物理ID
        byte[] physicalIdBytes = Arrays.copyOfRange(messageBytes, 5, 9);
        System.out.println(BytesUtil.bcd2StrLittle(physicalIdBytes));

        // 读取消息ID
        byte[] messageIdBytes = {messageBytes[9], messageBytes[10]};
        System.out.println(BytesUtil.bcd2StrLittle(messageIdBytes));

        // 读取命令
        byte command = messageBytes[11];
        System.out.println(BytesUtil.bcd2StrLittle(new byte[] {command}));

        // 读取数据
        byte[] data = Arrays.copyOfRange(messageBytes, 12, messageBytes.length - 2);
        System.out.println(BytesUtil.bcd2StrLittle(data));

        // 读取校验
        byte[] checksumBytes = {messageBytes[messageBytes.length - 2], messageBytes[messageBytes.length - 1]};
        System.out.println(BytesUtil.bcd2StrLittle(checksumBytes));

        return null;
    }
}