scrap.js

require('console-stamp')(console, '[HH:MM:ss.l]');
var request = require('request');
var cheerio = require('cheerio');
var admin = require('firebase-admin');
var serviceAccount = require('./changepush-firebase-adminsdk-v9baa-acf7bba9b7.json');


function sendMessage(title, body) {
  var message = {
    android: {
      priority: 'HIGH',
      notification: {
        "title": title,
        "body": body,
        color: '#0000FF'
      },
    },

    topic: 'nfl_changes'
  };

  admin.initializeApp({
    credential: admin.credential.cert(serviceAccount),
    databaseURL: 'https://changepush.firebaseio.com'
  });


  admin.messaging().send(message)
    .then((response) => {
      // Response is a message ID string.
      console.log('message send successful:', response);
      process.exit(1);
    })
    .catch((error) => {
      console.log('Error message send', error);
      process.exit(1);
    });

}

var url = 'https://www.ticketmaster.co.uk/nfl';

checkHtml();
setInterval(checkHtml, 1000 * 60);

function checkHtml() {
  request(url, function(error, response, body) {

    // console.log('error ' + error);
    // console.log('response ' + response);

    if (!error && response.statusCode === 200) {
      $ = cheerio.load(body);
      if ($('div.heightFix2').children()[0].attribs.src ===
        'https://media.ticketmaster.co.uk/tm/en-gb/img/static/nfl2018/Season-tickets.jpg' && $('div.heightFix2')
        .children()[13].children[0].data ===
        'General Admission Tickets ' &&
        $('div.heightFix2').children()[13].children[0].next.children[0].data === 'ON SALE SOON' && $('div.heightFix2')
        .children()[13].children[0].next.attribs.href ===
        '#') {
        console.log('no changes');
      } else {
        sendMessage('TICKETMASTER NFL CHANGED!', 'Something changed! Now Exiting scrap.js service');
      }
    } else {
      console.log('response ' + response);
      console.log('error ' + error);
      if (error) {
        sendMessage('Fatal Error in scrap.js', 'now exiting scrap.js service, please restart scrap.js. error: ' + error);
      } else {
        sendMessage('Wrong Response', 'Server Responded with HTTP Code +' + response.statusCode);
      }
    }

  });
}