bigbluebutton-Github/bigbluebutton-html5/imports/api/video-streams/server/handlers/webcamSync.js

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import { check } from 'meteor/check';
import { addWebcamSync } from '../modifiers/sharedWebcam';
import VideoStreams from '/imports/api/video-streams/';
import updatedVideoStream from '../modifiers/updatedVideoStream';
import unsharedWebcam from '../modifiers/unsharedWebcam';
export default function handleWebcamSync({ body }, meetingId) {
check(meetingId, String);
check(body, Object);
const { webcamListSync } = body;
check(webcamListSync, Array);
const streamsIds = webcamListSync.map((webcam) => webcam.stream);
const webcamStreamsToUpdate = VideoStreams.find({
meetingId,
stream: { $in: streamsIds },
}, {
fields: {
stream: 1,
},
}).fetch()
.map((m) => m.stream);
webcamListSync.forEach((webcam) => {
if (webcamStreamsToUpdate.indexOf(webcam.stream) >= 0) {
// stream already exist, then update
updatedVideoStream(meetingId, webcam);
} else {
// stream doesn't exist yet, then add it
addWebcamSync(meetingId, webcam);
}
});
// removing extra video streams already existing in Mongo
const videoStreamsToRemove = VideoStreams.find({
meetingId,
stream: { $nin: streamsIds },
}, {
fields: {
stream: 1,
userId: 1,
},
}).fetch();
videoStreamsToRemove
.forEach((videoStream) => unsharedWebcam(meetingId, videoStream.userId, videoStream.stream));
}