import { VideoGalleryRemoteParticipant } from '../types' ; type SmartDominantSpeakerParticipantsArgs = { /**
     * Array containing all participants of a call.  {@link @azure/communication-react#VideoGalleryRemoteParticipant} participants : VideoGalleryRemoteParticipant [ ] ; /**
     * An array containing the userId of dominant speakers
     * in a call in the order of their dominance. 0th index is the most dominant, 1st is the second most etc
     */ dominantSpeakers ? : string [ ] ; /**
     * Array containing currently rendered (visible)
     * participants in the call.  {@link @azure/communication-react#VideoGalleryRemoteParticipant} lastVisibleParticipants ? : VideoGalleryRemoteParticipant [ ] ; /**
     * Maximum number of dominant speaker positions to move participants in.
     */ maxDominantSpeakers : number ; } ; param args returns VideoGalleryRemoteParticipant[]  {@link @azure/communication-react#VideoGalleryRemoteParticipant} export const smartDominantSpeakerParticipants = ( args ) : VideoGalleryRemoteParticipant [ ] => { const { participants , dominantSpeakers = [ ] , lastVisibleParticipants = [ ] , maxDominantSpeakers } = args ; if ( participants . length <= maxDominantSpeakers ) { return participants ; } const participantsMap = participantsById ( participants ) ; const dominantSpeakerIds = Array . from ( new Set ( dominantSpeakers ) . values ( ) ) . filter ( ( id ) => ! ! participantsMap [ id ] ) . slice ( 0 , maxDominantSpeakers ) ; const lastVisibleParticipantIds = lastVisibleParticipants . map ( ( p ) => p . userId ) ; const newVisibleParticipantIds = lastVisibleParticipants . map ( ( p ) => p . userId ) . slice ( 0 , maxDominantSpeakers ) ; const newDominantSpeakerIds = dominantSpeakerIds . filter ( ( id ) => ! newVisibleParticipantIds . includes ( id ) ) ; for ( let index = 0 ; index < maxDominantSpeakers ; index ++ ) { const newVisibleParticipantId = newVisibleParticipantIds [ index ] ; if ( newVisibleParticipantId === undefined || ! dominantSpeakerIds . includes ( newVisibleParticipantId ) ) { const replacement = newDominantSpeakerIds . shift ( ) ; if ( ! replacement ) { break ; } newVisibleParticipantIds [ index ] = replacement ; } } const removedVisibleParticipantIds = lastVisibleParticipantIds . filter ( ( p ) => ! newVisibleParticipantIds . includes ( p ) ) ; removedVisibleParticipantIds . forEach ( ( p ) => newVisibleParticipantIds . push ( p ) ) ; const newVisibleParticipantIdSet = new Set ( newVisibleParticipantIds ) ; const leftoverParticipants = participants . filter ( ( p ) => ! newVisibleParticipantIdSet . has ( p . userId ) ) ; leftoverParticipants . forEach ( ( p ) => { newVisibleParticipantIds . push ( p . userId ) ; } ) ; const newVisibleParticipants = newVisibleParticipantIds . map ( ( participantId ) => participantsMap [ participantId ] ) . filter ( ( p ) => ! ! p ) ; return newVisibleParticipants ; } ; const participantsById = ( participants ) : { [ key ] : VideoGalleryRemoteParticipant ; } => { const response = { } ; participants . forEach ( ( p ) => ( response [ p . userId ] = p ) ) ; return response ; } ;