IT Help Needed – Printer Setup with Website

I’m looking for an IT professional to help figure out an appropriate setup for printing directly from my Virtual Private Server.

Here’s the issue I need to solve.

I have a website that allows users to purchase items.
I have a store that sells the items.

The store does not have an accessible computer by the cash register.
The store also does not have a receipt printer.
The store has wifi however.

Somehow I need to automatically print order receipts, when an order is processed on the website.
I can purchase a receipt printer, but how do I connect the receipt printer to the internet and how do I get it to automatically print the orders as they come in through the website?