package com.company;


import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

public class Main  {

    public static void main(String[] args){
        try {
            File f = new File(FILE_NAME);
            FileInputStream fis = new FileInputStream(f);

            byte[] b = new byte[20000];

            while (true) {
                int n = fis.read(b);
                System.out.println("n = " + n);

                byte type = b[16];
                byte code = b[18];
                byte value = b[20];

                if (type == 2 && code == 8) {
                    if(value == -1) {
                        System.out.println("Down");
                    } else {
                        System.out.println("Up");
                    }
                }

//                for (int i = 0; i < 12; i++) {
//                    for (int j = 0; j < 4; j++) {
//                        System.out.print("" + b[i * 4 + j] + " ");
//                    }
//                    System.out.println();
//                }

                System.out.println("type = " + type);
                System.out.println("code = " + code);
                System.out.println("value = " + value);

            }


        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

/*
        Main binary = new Main();
        try {
            byte[] bytes = binary.readSmallBinaryFile(FILE_NAME);
            System.out.println(bytes.length);
        } catch (IOException e) {
            e.printStackTrace();
        }
*/


    }

    final static String FILE_NAME = "/dev/input/event17";

    byte[] readSmallBinaryFile(String aFileName) throws IOException {
        Path path = Paths.get(aFileName);
        System.out.println(path);
        return Files.readAllBytes(path);
    }

    private static void log(Object aMsg){
        System.out.println(String.valueOf(aMsg));
    }

}