package com.ruoyi.service.impl;

import org.krysalis.barcode4j.impl.code128.Code128Bean;
import org.krysalis.barcode4j.output.bitmap.BitmapCanvasProvider;
import org.springframework.stereotype.Service;

import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.IOException;

@Service

public class BarcodeService {
    public byte[] generateBarcodeImage(String barcodeText) {
        try {
            Code128Bean barcodeGenerator = new Code128Bean();
            final int dpi = 160;
            barcodeGenerator.setModuleWidth(0.21);
            barcodeGenerator.doQuietZone(false);

            ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
            BitmapCanvasProvider canvas = new BitmapCanvasProvider(
                    outputStream, "image/png", dpi, BufferedImage.TYPE_BYTE_BINARY, false, 0);

            barcodeGenerator.generateBarcode(canvas, barcodeText);
            canvas.finish();

            return outputStream.toByteArray();
        } catch (IOException e) {
            throw new RuntimeException("Error generating barcode", e);
        }
    }
}