package com.sandu.ximon.admin.manager.iot.rrpc.util;

import com.sandu.ximon.admin.dto.RemoteFileDto;
import com.sandu.ximon.admin.utils.HexUtils;
import org.apache.catalina.LifecycleState;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

/**
 * @author ZZQ
 * @date 2022/5/5 14:26
 */
public class FileProcessingUtils {

//    public static void main(String[] args) {
//        try {
//            RemoteFileDto remoteFileDto = read("C:\\Users\\Administrator\\Desktop\\test\\H01_v3.0.12.min.dhcp.bin");
//            System.out.println(remoteFileDto.getListSize());
//            System.out.println(remoteFileDto.getList().size());
//            System.out.println(Arrays.toString(remoteFileDto.getList().get(0)));
//        } catch (IOException e) {
//            e.printStackTrace();
//        }
//    }

    public static RemoteFileDto read(String filePath) throws IOException {
        List<String> data = new ArrayList<>();
        int dataSize = 0;
        StringBuffer fileHexStr=new StringBuffer();

        File file = new File(filePath);

        InputStream in = new FileInputStream(file);

        // 一次性取多少个字节
        byte[] bytes = new byte[512];
        // 读取到的字节数组长度，为-1时表示没有数据
        int length = 0;
        // 循环取数据
        while ((length = in.read(bytes)) != -1) {
            String temp=HexUtils.encodeHexStr(Arrays.copyOf(bytes, length));
            data.add(temp);
            fileHexStr.append(temp);
            dataSize += length;
        }

        in.close();

        RemoteFileDto remoteFileDto = new RemoteFileDto();
        remoteFileDto.setList(data);
        remoteFileDto.setListSize(dataSize);
        remoteFileDto.setFileHexStr(fileHexStr.toString());
        return remoteFileDto;
    }
}