import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Scanner;
import java.util.zip.GZIPOutputStream;
import java.nio.charset.StandardCharsets;


public class GZIP_Compressor {
	
	
//    public static byte[] compressGzipFile(File file) {
//    	
//    	
//        try {
//            FileInputStream fis = new FileInputStream(file);
////            FileOutputStream fos = new FileOutputStream(gzipFile);
//            ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
//            GZIPOutputStream gzipOS = new GZIPOutputStream(byteArrayOutputStream);
//            
//            byte[] buffer = new byte[1024];
//            int len;
//            
//            while((len = fis.read(buffer)) != -1){
////                gzipOS.write(buffer, 0, len);
//            	gzipOS.write(buffer);
//            }
//            //close resources
//            gzipOS.close();
//            fis.close();
//            
//            return byteArrayOutputStream.toByteArray();
//            
//        } catch (IOException e) {
//            e.printStackTrace();
//        }
//        
//        return null;
//    }
	
    public static byte[] compress(File file) throws IOException {
        if (file == null) {
            return new byte[0];
        }
        
        
        DataInputStream reader = new DataInputStream(new FileInputStream(file));
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        try (GZIPOutputStream gzipOutputStream = new GZIPOutputStream(byteArrayOutputStream)) {
//            gzipOutputStream.write(text.getBytes(StandardCharsets.UTF_8));
        	gzipOutputStream.write(reader.readAllBytes());
        }
        reader.close();
        return byteArrayOutputStream.toByteArray();
    }
    
    
    
    
    
	
    public static byte[] compress(String text) throws IOException {
        if (text == null || text.isEmpty()) {
            return new byte[0];
        }

        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        try (GZIPOutputStream gzipOutputStream = new GZIPOutputStream(byteArrayOutputStream)) {
            gzipOutputStream.write(text.getBytes(StandardCharsets.UTF_8));
        }
        return byteArrayOutputStream.toByteArray();
    }

    
//    public static void main(String[] args) {
//        String originalText = "This is a sample text to be compressed.";
//        try {
//            byte[] compressedData = compress(originalText);
//            System.out.println("Original text: " + originalText);
//            System.out.println("Compressed data size: " + compressedData.length + " bytes");
//        } catch (IOException e) {
//            e.printStackTrace();
//        }
//    }
	
}



/*
class GzipCompression {

    public static byte[] compress(String text) throws IOException {
        if (text == null || text.isEmpty()) {
            return new byte[0];
        }

        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        try (GZIPOutputStream gzipOutputStream = new GZIPOutputStream(byteArrayOutputStream)) {
            gzipOutputStream.write(text.getBytes(StandardCharsets.UTF_8));
        }
        return byteArrayOutputStream.toByteArray();
    }

    public static void main(String[] args) {
        String originalText = "This is a sample text to be compressed.";
        try {
            byte[] compressedData = compress(originalText);
            System.out.println("Original text: " + originalText);
            System.out.println("Compressed data size: " + compressedData.length + " bytes");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}
*/