block5.js

const axios = require('axios').default;
const JSDOM =  require('jsdom').JSDOM;

module.exports.price = async event  => {
  if(event.queryStringParameters == undefined || event.queryStringParameters.url == undefined) {
    return {
      statusCode: 404,
      body: JSON.stringify({
        message: "You forgot the URL parameter!"
      })
    }
  }
  const url = event.queryStringParameters.url

  var encoded_url = encodeURI(url); 
  const res = await axios.get(encoded_url);

  const document = new JSDOM(res.data).window.document;

  const title_with_whitespace = document.querySelector("#productTitle").textContent;
  const title = title_with_whitespace.replace(/(?:\r\n|\r|\n)/g, '').trim();
  const price_with_ending = document.querySelector("#priceblock_ourprice").textContent;
  const price = price_with_ending.substring(0, price_with_ending.length - 2).replace(',', '.');
  
  
  return {
    statusCode: res.status,
    body: JSON.stringify({
      title: title,
      price: price
    })
  };
};