生成多页PDF时Node.js路由冲突及解决方案

router.get('/:database/:tipo/:ids/:limite?.pdf', async (req, res) => { ... });

router.get('/:database/:tipo/:ids/:limite?.pdfs', async (req, res) => { ... });

router.get('/:database/:tipo/:ids/:limite?.pdfs', async (req, res) => {
  const { database, tipo, ids, limite } = req.params;

  let idsArray;
  if (ids === "all") {
    const pool = new Pool({
      user: process.env.POSTGRES_USER,
      host: process.env.POSTGRES_HOST,
      database: database,
      password: process.env.POSTGRES_PASSWORD,
      port: process.env.POSTGRES_PORT,
    });

    let query = `SELECT DISTINCT id FROM controle_interno.${tipo} ORDER BY id ASC`;
    if (limite) {
      query += ` LIMIT ${limite}`;
    }
    const result = await pool.query(query);
    idsArray = result.rows.map(row => row.id);
  } else {
    idsArray = ids.split(",");
  }

  const pdfs = [];
  const browser = await puppeteer.launch();
  const page = await browser.newPage();

  for (let i = 0; i < idsArray.length; i++) {
    const id = idsArray[i];
    const url = `http://localhost:${port}/${database}/${tipo}/${id}`;
    console.log(url);
    try {
    await page.goto(url, {waitUntil: 'networkidle0'});
    await page.evaluate(() => {
      const button = document.getElementById('gerar-pdf');
      button.remove();
    });
  const pdfBytes = await page.pdf({ format: 'A4', printBackground: true, pageRanges: '1' });
  pdfs.push(await PDFDocument.load(pdfBytes));
} catch (err) {
  console.error(err.stack);
 }
}
  await browser.close();

  const mergedPdf = await PDFDocument.create();
  for (const pdf of pdfs) {
    const copiedPages = await mergedPdf.copyPages(pdf, pdf.getPageIndices());
    copiedPages.forEach((page) => mergedPdf.addPage(page));
  }

  const pdfBytes = await mergedPdf.save();
  const filePath = path.join(__dirname, 'relatorio.pdf');

  await fs.promises.mkdir(path.dirname(filePath), { recursive: true });
  await fs.promises.writeFile(filePath, pdfBytes);

  res.set({
    'Content-Type': 'application/pdf',
    'Content-Disposition': 'attachment; filename=relatorio.pdf',
    'Content-Length': pdfBytes.length
  });

  const stream = fs.createReadStream(filePath);
  stream.pipe(res);
  res.on('finish', async () => {
        // apaga o arquivo do diretório
        await fs.promises.unlink(filePath)});
  });