const trtcA = TRTC.create();
await trtcA.enterRoom({
  scene: 'rtc',
  sdkAppId: 140000000, // Fill in your sdkAppId
  userId: 'userA', // Fill in your userId
  userSig: 'userA_sig', // Fill in userSig corresponding to userId
  roomId: 6969
})
await trtcA.startScreenShare();

const trtcB = TRTC.create();
trtcB.on(TRTC.EVENT.REMOTE_VIDEO_AVAILABLE, ({ userId, streamType }) => {
  // Main video stream, generally the stream pushed by the camera
  if (streamType === TRTC.TYPE.STREAM_TYPE_MAIN) {
    // 1. Place a div tag with an id of `${userId}_main` on the page to play the main stream in the div tag. The business side can customize the id of the div tag. This is just an example.
    // 2. Play the main video stream
    trtcB.startRemoteVideo({ userId, streamType,  view: `${userId}_main` });
  } else {
    // Sub video stream, generally the stream pushed by screen sharing.
    // 1. Place a div tag with an id of `${userId}_screen` on the page to play the screen sharing in the div tag. The business side can customize the id of the div tag. This is just an example.
    // 2. Play screen sharing
    trtcB.startRemoteVideo({ userId, streamType, view: `${userId}_screen` });
  }
});

await trtcB.enterRoom({
  scene: 'rtc',
  sdkAppId: 140000000, // Fill in your sdkAppId
  userId: 'userB', // Fill in your userId
  userSig: 'userB_sig', // Fill in userSig corresponding to userId
  roomId: 6969
})

 await trtcA.startLocalVideo();
 await trtcA.startScreenShare();

 await trtcA.startScreenShare({ option: { systemAudio: true }});

 // Stop screen sharing collection and publishing
 await trtcA.stopScreenShare();

 // Other users in the room will receive the TRTC.EVENT.REMOTE_VIDEO_UNAVAILABLE event, and streamType is TRTC.TYPE.STREAM_TYPE_SUB.
 trtcB.on(TRTC.EVENT.REMOTE_VIDEO_UNAVAILABLE, ({ userId, streamType }) => {
    if (streamType === TRTC.TYPE.STREAM_TYPE_SUB) {
      
    }
 })

// Listen for screen sharing stop event
trtcA.on(TRTC.EVENT.SCREEN_SHARE_STOPPED, () => {
  console.log('screen sharing was stopped');
});

// good
async function onClick() {
  // It is recommended to execute the collection logic first when onClick is executed
  await trtcA.startScreenShare();
  await trtcA.enterRoom({ 
    roomId: 123123,
    sdkAppId: 140000000, // Fill in your sdkAppId
    userId: 'userA', // Fill in your userId
    userSig: 'userA_sig', // Fill in userSig corresponding to userId
  });
}

// bad
async function onClick() {
  await trtcA.enterRoom({ 
    roomId: 123123,
    sdkAppId: 140000000, // Fill in your sdkAppId
    userId: 'userA', // Fill in your userId
    userSig: 'userA_sig', // Fill in userSig corresponding to userId
  });
  // Entering the room may take more than 1s, and the collection may fail
  await trtcA.startScreenShare();
}