funcion para crear un codigo qr

import * as qrcode from 'qrcode';

import * as fs from 'fs';

import { InternalServerErrorException } from '@nestjs/common';

import * as path from 'path';

import { ServerConstants } from 'src/constants/server.contants';

const QR_FOLDER = 'qr';

export const generateQRCode = async (idState: number, idTown: number, idActivity: number, idPoint: number) => {

  try {

    const url = `/state/${idState}/town/${idTown}/activity/${idActivity}/travel?id=${idPoint}`;

    const qrCodeImage = await qrcode.toDataURL(url);

    // Decode base64 string

    const base64Data = qrCodeImage.replace(/^data:image\/png;base64,/, '');

    // Save image to the filesystem

    const filename = path.join(ServerConstants.ROOT_STATIC_PATH, QR_FOLDER, `${idPoint}.png`);

    fs.writeFile(filename, base64Data, 'base64', (err) => {

      if (err) {

        console.error(err);

        throw new InternalServerErrorException('Error saving QR code image');

      } else {

        console.log('QR code image saved as qrcode.png');

      }

    });

  } catch (err) {

    console.error(err);

    throw new InternalServerErrorException('Error generating QR code');

  }

};