Make order fulfillment plugin for Woocommerce

This project involves developing a custom plugin for my Woocommerce site to add a "fulfill order" button to new orders in the admin. Clicking this button will launch a chain of events: first, it will need to read the SKU, weight, dimensions, and quantity of each product in the order. Next it will need to make the details available to our warehouse's computer system, namely the total shipping weight and cubic inches, customer's address, and requested shipping method. At the same time it will need to access the shipping carriers' APIs (FedEx and Sendle) to generate a shipping label and then update the order with the tracking number and set the status to Complete. It will also need to make that shipping label available to our warehouse's computer system. How the communication with our warehouse computer system will be achieved is yet to be determined.