How to Send an Automated Message on WhatsApp when Order is Placed on shopify

i want to create a scenario that if someone place and order on shopify an automated message is send to them on whatsapp
for messaging and handling am using botpress which i also want to connect in scenario also add a sheet to store data of orders placed on whatsapp can any one help please its urgent just want to know the modules to used for this functionality

You could watch for New Order event on Shopify, then call a Send Message action using 2Chat while making sure the customer placing the order always adds a phone number during checkout.