Integrating with external mobile app

Hello,

I am looking to integrate my mobile app which does the checkout for Woo-Commerce orders. So as a first step I want to generate the checkout url so that I can redirect users to phonepe payment page.

So is there any specific function I can call in an API that I use in my plugin to expose as an endpoint. So when I pass on orderid it should send phonepe checkout url back. Rest should follow same logic as success return url should mark the order as paid etc.

Thanks,

Phani.