Google Extension for Nike.com

I want to build an google extension that helps me get limited sneakers from [login to view URL] The app should include a simple functionality: - Size selection (The user chooses what size they want to buy) - Off / ON (a button where the user can deactivate the extension functionality) There are 3 main functionalities to the app: 1. Add to cart (When the user are on a product page on [login to view URL], and app is turned on - the app should automatically add that size to basket) 2. Counter ignition (Limited shoes are launched on specific times and sell out in seconds or minutes, and a few hours before a launch the product page will have a counter - once that counter goes to zero, the app has to activate the add 2 cart feature ASAP to be able to secure the sneaker in the basket) 3. Affiliate - App should activate an affiliate link for [login to view URL] each time the user comes to [login to view URL] and its a new session. This is a pre project where if we see high succes rate we want to do the same functionality for 10+ shops