index.js

const path = require('path');
const express = require("express");
const fileUpload = require("express-fileupload");
const bodyParser = require("body-parser");
const fs = require("fs");
const chalk = require("chalk");
const moment = require("moment");
const app = express();
const { get_lan_ip } = require("./Get_LAN_IP");
const { renderPage } = require("./page");
const PORT = 9200;

const log = console.log;
const withColor = color => text => chalk[color](text);
const withNowTime = text =>
  chalk["cyan"](moment().format("YYYY/MM/DD h:mm:ss A ")) + text;

// middleware
app.use(fileUpload());
app.use(bodyParser.urlencoded({ extended: false, limit: '10mb' }));

// respond with "hello world" when a GET request is made to the homepage
app.get("/", function(req, res) {
  res.send(renderPage({}));
});

const dir_public = path.join(__dirname, 'public');
app.use(express.static(dir_public));

// respond with "hello world" when a GET request is made to the homepage
app.get("/UPLOADED_FILE", function(req, res) {
  res.sendFile(__dirname + "/UPLOADED_FILE");
});

app.post("/upload", function(req, res) {
  log(withNowTime(withColor("yellow")(req.files))); // the uploaded file object

  if (!req.files || Object.keys(req.files).length === 0) {
    return res.status(400).send("No files were uploaded.");
  }

  // The name of the input field (i.e. "UPLOADING_FILE") is used to retrieve the uploaded file
  let UPLOADING_FILE = req.files.UPLOADING_FILE;

  // Use the mv() method to place the file somewhere on your server
  UPLOADING_FILE.mv("./UPLOADED_FILE", function(err) {
    if (err) return res.status(500).send(err);

    res.send("File uploaded!");
  });
});

app.post("/pastebin", function(req, res) {
  log(withNowTime(withColor("redBright")(`Requesting pastebin service`)));

  const pastebin = req.body.PASTE;

  fs.writeFileSync("./PASTE_BIN", pastebin);

  res.send(`
<a href="${get_lan_ip()}:${PORT}">Back to home</a>
<br />
<br />
Your post: <br /><br /><pre>${pastebin}</pre>`);
});

app.listen(PORT, () => {
  log(
    `Example app listening on port ${withColor("yellow")(
      get_lan_ip()
    )}:${withColor("red")(PORT)}`
  );
});