const express = require("express");
const router = express.Router();
const fs = require("fs");
const path = require("path");
const pdf = require("html-pdf-node");

router.get("/:code", async (req, res) => {
  const { amount = 1, service = "software service" } = req.query;

  // Read the invoice template
  const templatePath = path.join(__dirname, "../invoice.html");
  let html = fs.readFileSync(templatePath, "utf8");

  // Replace placeholders in the template
  html = html
    .replace("Website design", service)
    .replace("$300.00", `$${amount}.00`)
    .replace("Total: $385.00", `Total: $${amount}.00`);

  // Generate PDF
  let file = { content: html };
  pdf.generatePdf(file, { format: "A4" }).then((pdfBuffer) => {
    res.setHeader("Content-Type", "application/pdf");
    res.setHeader("Content-Disposition", "attachment; filename=invoice.pdf");
    res.send(pdfBuffer);
  });
});

module.exports = router;