telemantra-healthcare/use-twilio-video

React hooks to manage twilio video state in React application

use-twilio-video

React hooks to manage twilio video state in React application

Features

• connect and disconnect room
• toggle mute camera
• toggle mute microphone
• get dominant speaker

Install

npm install --save twilio-video use-twilio-video

Prerequisite

You need Twilio Access Token to use Twilio Video. You can use Testing Tools in the Twilio Console to generate the token. You can read the guide here.

Or you can also follow the next instruction while running the sample project in folder example. To run example:

1. From root repo directory, change directory to example folder: cd example
2. Install dependencies: npm install
3. Copy .env.example and rename to .env
4. Add your Twilio API Key to the .env file. You can get your API Key from your Twilio account. You can follow this guide.
5. Run server to generate token: npm run server
6. Open different tab and run the react app: npm start

Usage

There are two main hooks, useRoom and useTrack.

useRoom is used to manage room state. In Twilio, a Room represents a real-time audio, data, video, and/or screen-share session, and is the basic building block for a Programmable Video application.

useTrack is used to manage tracks in a room. In Twilio, Tracks represent the individual audio, data, and video media streams that are shared within a Room. This tracks are shared by Participants. Participants represent client applications that are connected to a Room and sharing audio, data, and/or video media with one another.

The following are the minimum components needed to be able to create a simple video call application using twilio and use-twilio-video.

1. Create a component that represent a Room.

   // Room.js
   import Participant from './Participant'
   import { useRoom } from 'use-twilio-video'
   
   function Room ({ token, roomName }) {
     const { room, error, connectRoom, disconnectRoom, localParticipant, remoteParticipants, dominantSpeaker, isCameraOn, toggleCamera, isMicrophoneOn, toggleMicrophone } = useRoom()
   
     
     useEffect(() => {
       if (!room && token && roomName) {
         connectRoom({ token, options: { name: roomName, dominantSpeaker: true } })
         return () => disconnectRoom()
       }
     }, [connectRoom, disconnectRoom, room, roomName, token])
   
     // ... other
   
     // usage example in simple component
     if (room)
       return (
         <div>
           <div>
             <button onClick={() => disconnectRoom()}>disconnect</button>
             <button onClick={() => toggleCamera()}>
               {isCameraOn ? 'turn off camera' : 'turn on camera'}
             </button>
             <button onClick={() => toggleMicrophone()}>
               {isMicrophoneOn ? 'turn off mic' : 'turn on mic'}
             </button>
           </div>
   
           <div>Local participant: {JSON.stringify(localParticipant?.identity)}</div>
           <Participant participant={localParticipant} />
   
           <div>
             Remote participants:{' '}
             {JSON.stringify(remoteParticipants.map(v => v.identity))}
           </div>
   
           <div>Dominant speaker: {JSON.stringify(dominantSpeaker?.identity)}</div>
   
           <div>
             {remoteParticipants.map(p => (
               <Participant participant={p} />
             ))}
           </div>
         </div>
       )
   
     // ... other
   }

2. Create a component represent Participants.

   // Participant.js
   import AudioTrack from './AudioTrack'
   import VideoTrack from './VideoTrack'
   import { useTrack } from 'use-twilio-video'
   
   function Participant ({ participant }) {
     const { videoOn, audioOn, videoTrack, audioTrack } = useTrack({ participant })
   
     return (
       <div>
         {videoOn ? <VideoTrack track={videoTrack} /> : 'video off'}
         <br />
         {audioOn ? <AudioTrack track={audioTrack} /> : 'audio off'}
       </div>
     )
   }
   
   export default Participant

3. Create two components, to attach participants' video and audio

   // VideoTrack.js
   import { useEffect, useRef } from 'react'
   
   export default function VideoTrack ({ track }) {
     const ref = useRef()
   
     useEffect(() => {
       if (track) {
         const el = ref.current
         track.attach(el)
   
         return () => {
           track.detach(el)
         }
       }
     }, [track])
   
     return <video style={{ maxWidth: '100%' }} ref={ref} />
   }

   // AudioTrack.js
   import { useEffect, useRef } from 'react'
   
   export default function AudioTrack ({ track }) {
     const ref = useRef()
   
     useEffect(() => {
       if (track) {
         const el = ref.current
         track.attach(el)
   
         return () => {
           track.detach(el)
         }
       }
     }, [track])
   
     return <audio ref={ref} />
   }    

License

MIT © Nur Latifah Ulfah

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This hook is created using create-react-hook.