'use strict';
 
const express = require('express');
const pdftk = require('node-pdftk');
const path = require('path');
const app = express();
 
app.get('/', (req, res) => {
  pdftk
    .input(path.resolve(__dirname + '/../files/javascript.pdf'))
    .stamp(path.resolve(__dirname + '/../files/watermark.pdf'))
    .output(path.resolve(__dirname + '/../files/javascript_watermark.pdf'))
    .then(buffer => {
      return res.send('successful');
    })
    .catch(err => {
      console.error(err);
      return res.send('failed');
    });
});
 
app.listen(3100);