Where to start for a Libra prototype with WhatsApp?

Hi,
I m new to Libra, so thanks in advance for being smart :slight_smile:
I would like to do a prototype of a Libra usage connected to WhatsApp.
The goal is to allow donation of Libra token from WhatApp to a non profit organisation.
Do we have any code source example of integration between WhatsApp and a Libra Client ?
Do we have any code source of Libra Client connected to a Libra Testnet ?
Thanks in advance