video-app-backend.ts

switch (data.type) {
case 'offer':
// Doctor will initiate the offer
// console.log('msg received', Object.keys(this.connections), data, connection.userData);
// if UserB exists then send him offer detail
// TODO: if patient has joined then send the offer. else send message that patient not available
// to check patient has joined
// get oversides connection
if (aptData && aptData.userConnectionId) {
// get connectionId of patient and send offer
conn = this.connections[aptData.userConnectionId];
if (conn != null) {
  // setting that UserA connected with UserB
  console.log('name sending for offer', aptData.userConnectionId)
  this.sendTo(conn, {
    type: 'offer',
    offer: data.offer,
  });
}
} else {
// Patient is unavailable or have not joined yet.
this.sendAppointmentMsg(connection, {
  type: 'appointment-status',
  data: 'Patient is not available yet',
});
}
break;
```

1.Remove this logic altogether, the patient doesnot necessarily have to be available when doctor has joined, 
he can join later on as well
2.When you create the jwt add userid information in that.Once you have the userid, check if its a doctor registered in 
the database, if yes create a room `socket.join(roomName)`, the room name will be the same as docktors userid, 
When the patient wants to join the chat redirect him to the same room the doctor is in.