import { createVideoRoomClient } from "janus-simple-videoroom-client"

async function joinRoom(server, roomId, displayName) {
    const client = await createVideoRoomClient()
    const session = await client.createSession(server)
    const room = await session.joinRoom(roomId)

    const pub = await room.publish({display: displayName})
    pub.onTrackAdded(track => showVideo(track))
    pub.onTrackRemoved(track => hideVideo(track))

    const subs = {}
    room.onPublisherAdded(publishers => publishers.forEach(subscribe))
    room.onPublisherRemoved(unsubscribe)


    async function subscribe(publisher) {
        subs[publisher.id] = await room.subscribe([{feed: publisher.id}])
        subs[publisher.id].onTrackAdded(track => showVideo(track))
        subs[publisher.id].onTrackRemoved(track => hideVideo(track))
    }
    async function unsubscribe(publisherId) {
        await subs[publisherId].unsubscribe()
    }
}