Bulk Whatsapp marketing Application in Java or Golang

Web based interface need to develop to connect different whatsapp numbers
Able to add multiple whatsapp numbers on same server. Every number must run on different port
API need to develop for
sending bulk msg
reports
check connected whatsapp numbers and show status
filter whatsapp numbers
msg able to send with buttons / call to action option
if 10 different whtsapp number connected on server and we send 10 numbers for sending msg then each msg will go with different number in one go