Design and interface Text, Audio & Video Chat to our website www.chatbharat.com

We designed a social media platform [login to view URL], where website designed using HTML5, CSS as front end and Core PHP (No frameworks are used) as backend, we are looking for a Text chat, audio, and video call API interfacing to this website, where all the registered users can do call and chat in private (One to One). we are not interested in interfacing any paid or per minute usage API, we are looking for someone who done this kind of project, calls should work as just one click method and alerts at other side should be very real time We are looking for freelancer who is expert in linking node.js applications in PHP Specific Requirments - Text chat One to one Private chat Should support File attachment, Emojis, and Offline / Online Status Read Receipts, Sent and delivered markers - Audio & Video Call One to one Private call Should have incall timer Call Alerts should be real time GUI must be very attractive API should adjust with Core PHP, as our website designed in PHP The max timeline for this project only 3 days, one can post bid if they are willing to deliver the product in 3 days with perfect functionalities, we will create the milestone and release will be against to deployment.