package com.whyc.service;

import com.google.zxing.BinaryBitmap;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.Result;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.HybridBinarizer;
import org.springframework.stereotype.Service;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.FileInputStream;
import java.io.InputStream;

@Service
public class QRCodeService {


    public String extract(byte[] data) {
        try {
            InputStream inputStream = new ByteArrayInputStream(data);
            BufferedImage bufferedImage = ImageIO.read(inputStream);
            BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(bufferedImage)));
            Result result = new MultiFormatReader().decode(binaryBitmap);
            return result.getText();

        }catch (Exception e){
            e.printStackTrace();
            return null;
        }
    }

    public static String test() {
        try {
            //InputStream inputStream = new ByteArrayInputStream(data);
            InputStream inputStream = new FileInputStream("C:\\code\\web\\InspectionSystem\\src\\main\\resources\\lib\\t5.jpg");
            BufferedImage bufferedImage = ImageIO.read(inputStream);
            BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(bufferedImage)));
            Result result = new MultiFormatReader().decode(binaryBitmap);
            return result.getText();

        }catch (Exception e){
            e.printStackTrace();
            return null;
        }
    }

    public static void main(String[] args) {
        System.out.println(test());
    }
}