import QRCode from 'qrcode';
import { logger } from './logger';

/**
 * Generate a QR code as a buffer from a Lightning invoice
 */
export async function generateQRCode(data: string): Promise<Buffer> {
  try {
    const buffer = await QRCode.toBuffer(data.toUpperCase(), {
      errorCorrectionLevel: 'M',
      type: 'png',
      margin: 2,
      width: 300,
      color: {
        dark: '#000000',
        light: '#FFFFFF',
      },
    });
    return buffer;
  } catch (error) {
    logger.error('Failed to generate QR code', { error });
    throw error;
  }
}

export default { generateQRCode };