web Whatsapp - Use OPEN SOURCE API library to make a project similar to mercury or chat-api for whatsapp

WE DO NOT WANT THE OFFICIAL WHATSAPP BUSINESS API FOR THIS PROJECT. PLEASE READ THE POST BEFORE BIDDING. USE ********UNOFFICIAL******* webWhatsapp API project + use OPEN SOURCE whatsapp API + Send/Receive whatsapp Messages via API THIS PROJECT IS NOT TO BE DONE WITH THE OFFICIAL BUSINESS API FOR WHATSAPP *********************************************************************** If you bid please inform which unofficial open source whatsapp API you intend to use for the project. ******************************************************************************* We are currently integrated with Chat-2-Desk, [login to view URL] and chat-api to communicate with whatsapp. We can send/receive messages to whatsapp to and from our CRM or freshdesk account and incomming messages can also be directed to execute functions in our DB (confirm received inventory and other functions). We would like another option to be able to send/receive messages via OPEN SOURCE UNOFFICIAL WHATSAPP api and it should have the same interface and ALL the same functionalities of mercury.chat. Its important to also be able to connect to multiple whatsapp accounts and associate these to different users in the project. Its important that we be able to create and use multiple webhooks with the same account as this is a restriction of the above APIs which me need to resolve. We need to inform more than one "listener" for the webhook to notify. Please only bid if you have done a previous job USING AN OPEN SOURCE WHATSAPP API LIBRARY from any repository like github etc. We will ask for details about the previous projects. There are many open source APIs available please feel free to use the one your more familiar with to speed the process. 50% milestone release on demonstration of working beta 50% on source code approval Thanks Marcio