WooCommerce Banggood API quantity auto-update plugin

Hi freelancers! I need to create a plugin for my WooCommerce site, that connects with Banggood API and updates the quantity for all my simple and variable products. So if Banggood changes the quantity of a product or of a specific color for example of a product, then I need to automatically change the quantity in my website in a simple or variable product accordingly. This has to be a plugin and it needs to have a settings page, where I add my API ID and SECRET, in order to connect with the Banggood API. You won't have access to my Eshop, neither to my Banngood account, you will need to create this in your own setups and hand over the plugin for testing! Code will be double-checked, in order to assure the quality of it. I'm currently using ShopMaster to import my products, but they do not support quantity updating, just price. For all of the products I import in my shop, I use Banggood's SKU, if that helps you. But variable products have their own SKU which consists of the main product's SKU and a code, for example, SKU-color or SKU-1. So you will let me know which method you will use to check the correct products from Banggood to my Shop. Thank you!