package com.dy.common.softUpgrade.parse;

import cn.hutool.core.util.HexUtil;
import com.dy.common.util.ByteUtil;

import java.io.*;
import java.util.List;
import java.util.stream.Stream;

/**
 * @Author: liurunyu
 * @Date: 2024/11/2 8:51
 * @Description
 */
public class HexFileParse {

    private static final int hexFileMinLine = 4 ;
    private static final int lineHeadEndIndex = 9 ;
    private static final int bytesSplitUnit512 = 512 ;

    public static void main(String[] args) throws Exception{
        boolean fromBytes = true ;
        HexFileParse obj = new HexFileParse() ;
        if(!fromBytes){
            String filePath = "D:\\hexFile\\YuanMu_edit241007_01.hex";
            //File file = new File(filePath) ;
            HexFileVo vo =  obj.doParse(filePath) ;
            System.out.println(vo.toString());
        }else{
            String filePath = "D:\\hexFile\\YuanMu_edit241007_01.hex";
            File file = new File(filePath) ;
            byte[] fileContent = new byte[(int)file.length()] ;
            FileInputStream fileInputStream = new FileInputStream(file) ;
            fileInputStream.read(fileContent) ;
            HexFileVo vo =  obj.doParse(fileContent) ;
            System.out.println(vo.toString());
        }
    }
    /**
     * 解析Hex文件
     * @param path
     * @return
     * @throws Exception
     */
    public HexFileVo doParse(String path) throws Exception {
        File file = new File(path) ;
        return this.doParse(file) ;
    }

    /**
     * 解析Hex文件
     * @param file
     * @return
     * @throws Exception
     */
    public HexFileVo doParse(File file) throws Exception{
        if(file == null){
            throw new Exception("Hex文件对象为null") ;
        }
        if(!file.exists()){
            throw new Exception("Hex文件不存在") ;
        }
        Stream<String> linesStream = new BufferedReader(new FileReader(file)).lines() ;
        List<String> lineList =  linesStream.toList() ;
        HexFileVo vo = new HexFileVo() ;
        this.checkAndCalculate(vo, lineList);
        this.parse(vo, lineList);
        this.split(vo);
        return vo ;
    }

    /**
     * 解析Hex文件
     * @param fileContent
     * @return
     * @throws Exception
     */
    public HexFileVo doParse(byte[] fileContent) throws Exception{
        if(fileContent == null || fileContent.length == 0){
            throw new Exception("Hex文件对象为null") ;
        }
        ByteArrayInputStream byteInputStream = new ByteArrayInputStream(fileContent);
        Stream<String> linesStream = new BufferedReader(new InputStreamReader(byteInputStream)).lines() ;
        List<String> lineList =  linesStream.toList() ;
        HexFileVo vo = new HexFileVo() ;
        this.checkAndCalculate(vo, lineList);
        this.parse(vo, lineList);
        this.split(vo);
        return vo ;
    }

    /**
     * 合法性检查，并计算数据包数
     * @param vo
     * @param lineList
     * @throws Exception
     */
    private void checkAndCalculate(HexFileVo vo, List<String> lineList) throws Exception{
        if(lineList == null){
            throw new Exception("Hex文件内容为空") ;
        }
        vo.totalLines = lineList.size() ;
        if(vo.totalLines <= 0){
            throw new Exception("Hex文件内容为空") ;
        }
        if(vo.totalLines < hexFileMinLine){
            throw new Exception("Hex文件内容行数" + vo.totalLines + "不正确(最小行数" + hexFileMinLine +")") ;
        }
        vo.calculateBytes = ((vo.totalLines - 4) * 32) / 1024 * 512 ;
    }

    /**
     * 解析Hex文件内容，组合成一个大数据包
     * @param vo
     * @param lineList
     * @throws Exception
     */
    private void parse(HexFileVo vo, List<String> lineList) throws Exception{
        int counter = 0 ;
        for(String line : lineList){
            if(counter == 0){
                // 文件头
            }else if(counter == vo.totalLines - 2){
                // 文件尾倒数第2行
            }else if(counter == vo.totalLines - 1){
                // 文件尾倒数第1行
            }else{
                // 文件内容
                if(line == null){
                    vo.errors.add("第" + counter + "行内容为空") ;
                }else{
                    line = line.trim() ;
                    if(line.length() == 0){
                        vo.errors.add("第" + counter + "行内容为空") ;
                    }else{
                        if(!line.startsWith(":")){
                            vo.errors.add("第" + counter + "行内容不是以:开头") ;
                        }else{
                            line = line.substring(lineHeadEndIndex, line.length() - 2) ;
                            if(vo.bytes.length == 0){
                                vo.bytes = HexUtil.decodeHex(line) ;
                            }else{
                                byte[] bytes = HexUtil.decodeHex(line) ;
                                vo.bytes = ByteUtil.bytesMerge(vo.bytes, bytes) ;
                            }
                        }
                    }
                }
            }
            counter ++ ;
        }
        if(vo.bytes != null && vo.bytes.length > 0){
            vo.bytesCrc16 = this.crc16(vo.bytes);
        }
    }

    /**
     * 以512为单位分割数据包
     * @param vo
     */
    private void split(HexFileVo vo){
        if(vo.bytes != null && vo.bytes.length > 0){
            vo.realBytes += vo.bytes.length ;
            int index = 0 ;
            while (true){
                if(index < vo.bytes.length){
                    byte[] bytes = ByteUtil.bytesSplit(vo.bytes, index, bytesSplitUnit512) ;
                    vo.listByte512.add(bytes) ;
                    vo.totalBytes512 += bytes.length ;
                }else{
                    break ;
                }
                index += bytesSplitUnit512;
            }
        }
    }

    /**
     * CRC16计算
     * @param buf
     * @return
     */
    private Integer crc16(byte[] buf){
        int crc = -1 ;
        for(int i = 0; i < buf.length; ++i) {
            crc = (crc >> 8) ^ crc16_table[(crc ^ buf[i]) & 0x00FF];
        }
        return crc ;
    }
    private Integer[] crc16_table = new Integer[]{
        0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241,
        0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440,
        0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40,
        0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841,
        0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40,
        0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41,
        0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641,
        0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040,
        0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240,
        0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441,
        0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41,
        0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840,
        0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41,
        0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40,
        0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640,
        0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041,
        0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240,
        0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441,
        0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41,
        0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840,
        0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41,
        0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40,
        0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640,
        0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041,
        0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241,
        0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440,
        0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40,
        0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841,
        0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40,
        0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41,
        0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641,
        0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040
    };

}