server.js

const express = require("express");
const fs = require("fs");
const fileUpload = require("express-fileupload");
const cors = require("cors");
const morgan = require("morgan");
const rateLimit = require("express-rate-limit");

const app = express();

const limiter = rateLimit({
  windowMs: 15 * 60 * 1000, // 15 minutes
  max: 100 // limit each IP to 100 requests per windowMs
});

app.use(
  fileUpload({
    createParentPath: true,
  })
);

app.use(cors());
app.use(express.json());
app.use(express.urlencoded({ extended: true }));
app.use(morgan("dev"));

app.post("/", limiter, async (req, res) => {
  try {
    if (req.files && req.files.files) {
      [req.files.files].flat().map((file) => {
        file.mv("./uploads/" + file.name);
      });
    }

    fs.writeFile("./uploads/data.json", JSON.stringify(req.body), "utf8", () => {
      res.send({
        status: true,
        message: "Data is uploaded",
      });
    });
  } catch (e) {
    res.status(500).send(e.message);
  }
});

const port = process.env.PORT || 4000;

app.listen(port, () => console.log(`Server is running on port ${port}`));