shopify app to get list of products from API and keep inventory updated constantly

I need a Shopify integration that can populate my Shopify inventory with products gathered from an API that provides the list of products I have in another service of mine. I will provide the API endpoint that returns a JSON payload with a list of products with all their fields: price, quantity_available, images, description, etc. The Shopify integration should have the capability of authenticating with OAuth with Shopify and my API. Python preferred. Requirements: - OAuth athentication - fetch list of products from API endpoint, filter based on any criteria via UI and publish in shopify - keep products, quantities available, prices, etc updated in shopify based on the data from the API endpoint all the time - inventory should be up to date at least every night - ability to sync manually from a button in Shopify at any given time - if an item gets sold, send an API request to an endpoint I provide so that I can update available quantity in my other service