GOG Insomnia Alerter

gistfile1.md

GOG Alerts

Those little nifty scripts are useful for monitoring offers on GOG.com's Spring Insomnia Sale.

You can choose between:

1. A simple Python script which polls an AJAX endpoint every N seconds;
2. A JavaScript, Client-side poll which uses HTML5 Notifications for the same purposes.

Feel free to use it ;)

Bookmarklet:

Just create a bookmark and replace the address with the following snippet:

javascript:(function(){s = document.createElement('script'); s.src = "https://gist.githubusercontent.com/proudlygeek/a677130428cd2181ff3e/raw/c79671e93d75e68bbd73ef00759e2e7a3f0651d7/gog.js"; document.body.insertBefore(s, document.getElementsByTagName('script')[0]);})()

This is only tested on Chrome and Safari, probably works on other Webkit browsers too.

License

MIT

gog-insomnia.py

# coding: utf-8

import os
import re
import time
import requests

GOG_URL="http://www.gog.com/springinsomnia/ajax/getCurrentOffer"
DELAY_SECONDS=5
THRESHOLD=50

def scrape_gog():
    """
    Scrapes GOG.com for the current Spring Insomnia Sale every DELAY_SECONDS
    (5 by default); when the current title's count reaches the thresold value
    (50 by default) the script notifies the user by using Mac OS X Notifier.
    """
    reset = False

    while True:
        page = requests.get(GOG_URL).json()
        title = re.findall('"game__title"> (.+) <b', page['html'])[0]
        left = int(page['amountLeft'])

        if not reset and int(left) <= THRESHOLD:
            cmd = "osascript -e \'display notification \"Alert: {} is almost sold out!\" with title \"GOG.COM: {}\"\'".format(title, title)
            print cmd
            os.system(cmd)
            print "[ALERT]: {} is almost sold out!".format(title)
            reset = True

        if left > THRESHOLD:
            reset = False

        time.sleep(DELAY_SECONDS)

if __name__ == '__main__':
    scrape_gog()

gog.js

(function() {
  'use strict';
  
  var imageUrl = "http://www.userlogos.org/files/logos/educolnago/gog_com.png";
  var reset = false;

  function getCount() {
    return parseInt(document.getElementsByClassName('js-left-count')[0].innerHTML, 10);
  }

  function getGameTitle() {
    return document.getElementsByClassName('game__title')[0].text;
  }

  function createNotification(title, msg) {
    webkitNotifications.createNotification(imageUrl, title, msg).show();
  }

  function check(threshold) {
    if (!reset && getCount() < threshold) {
      createNotification("Alert!", getGameTitle() + " is almost sold out!");
      reset = true;
    }
    if (getCount() > threshold) {
      reset = false;
    }
  }

  function createActivationButton() {
    var activateButton = document.createElement('p');
    activateButton.style.position = "fixed";
    activateButton.style.top = "20px";
    activateButton.style.right = "20px";
    activateButton.style.color = "#fff";
    activateButton.style.backgroundColor = "rgb(94,94,94)";
    activateButton.style.padding = "25px";
    activateButton.style.cursor = "pointer";
    activateButton.style.borderRadius = "5px";
    activateButton.style.border = "1px solid #222";
    activateButton.style.zIndex = 999;
    activateButton.textContent = "Activate Popup notifications on GOG.COM";
    activateButton.setAttribute('onclick', "webkitNotifications.requestPermission();");
    if (webkitNotifications.checkPermission()) {
      document.body.appendChild(activateButton);
    }
  }

  function main() {
    createActivationButton();
    setInterval(function() {
      check(50);
    }, 1000);
  }

  main();
})();