How Can I Integrate WhatsApp Messaging API in My Web Application?

Hello everyone,
I’m working on a web and would like to integrate WhatsApp messaging functionality into it. Specifically, I want to allow users to send messages to a WhatsApp number directly from the web app, without requiring them to leave the platform.

I’m aware of the WhatsApp Business API, but I’m not sure how to implement it properly. Can anyone provide a detailed guide on how to set it up, or suggest alternatives for sending WhatsApp messages programmatically? Also, are there any libraries or tools that can make the integration process smoother?

Any help or resources would be much appreciated!

Thanks in advance!