jiti-meet/react/features/base/participants/middleware.ts

832 lines
29 KiB
TypeScript

import i18n from 'i18next';
import { batch } from 'react-redux';
// @ts-expect-error
import UIEvents from '../../../../service/UI/UIEvents';
import { IStore } from '../../app/types';
import { approveParticipant } from '../../av-moderation/actions';
import { UPDATE_BREAKOUT_ROOMS } from '../../breakout-rooms/actionTypes';
import { getBreakoutRooms } from '../../breakout-rooms/functions';
import { toggleE2EE } from '../../e2ee/actions';
import { MAX_MODE } from '../../e2ee/constants';
import { showNotification } from '../../notifications/actions';
import {
LOCAL_RECORDING_NOTIFICATION_ID,
NOTIFICATION_TIMEOUT_TYPE,
RAISE_HAND_NOTIFICATION_ID
} from '../../notifications/constants';
import { isForceMuted } from '../../participants-pane/functions';
import { CALLING, INVITED } from '../../presence-status/constants';
import { RAISE_HAND_SOUND_ID } from '../../reactions/constants';
import { RECORDING_OFF_SOUND_ID, RECORDING_ON_SOUND_ID } from '../../recording/constants';
import { APP_WILL_MOUNT, APP_WILL_UNMOUNT } from '../app/actionTypes';
import { CONFERENCE_WILL_JOIN } from '../conference/actionTypes';
import { forEachConference, getCurrentConference } from '../conference/functions';
import { IJitsiConference } from '../conference/reducer';
import { SET_CONFIG } from '../config/actionTypes';
import { getDisableRemoveRaisedHandOnFocus } from '../config/functions.any';
import { JitsiConferenceEvents } from '../lib-jitsi-meet';
import { MEDIA_TYPE } from '../media/constants';
import MiddlewareRegistry from '../redux/MiddlewareRegistry';
import StateListenerRegistry from '../redux/StateListenerRegistry';
import { playSound, registerSound, unregisterSound } from '../sounds/actions';
import {
DOMINANT_SPEAKER_CHANGED,
GRANT_MODERATOR,
KICK_PARTICIPANT,
LOCAL_PARTICIPANT_AUDIO_LEVEL_CHANGED,
LOCAL_PARTICIPANT_RAISE_HAND,
MUTE_REMOTE_PARTICIPANT,
OVERWRITE_PARTICIPANTS_NAMES,
OVERWRITE_PARTICIPANT_NAME,
PARTICIPANT_DISPLAY_NAME_CHANGED,
PARTICIPANT_JOINED,
PARTICIPANT_LEFT,
PARTICIPANT_UPDATED,
RAISE_HAND_UPDATED,
SET_LOCAL_PARTICIPANT_RECORDING_STATUS
} from './actionTypes';
import {
localParticipantIdChanged,
localParticipantJoined,
localParticipantLeft,
overwriteParticipantName,
participantLeft,
participantUpdated,
raiseHand,
raiseHandUpdateQueue,
setLoadableAvatarUrl
} from './actions';
import {
LOCAL_PARTICIPANT_DEFAULT_ID,
LOWER_HAND_AUDIO_LEVEL,
PARTICIPANT_JOINED_SOUND_ID,
PARTICIPANT_LEFT_SOUND_ID
} from './constants';
import {
getDominantSpeakerParticipant,
getFirstLoadableAvatarUrl,
getLocalParticipant,
getParticipantById,
getParticipantCount,
getParticipantDisplayName,
getRaiseHandsQueue,
getRemoteParticipants,
hasRaisedHand,
isLocalParticipantModerator,
isScreenShareParticipant,
isWhiteboardParticipant
} from './functions';
import logger from './logger';
import { PARTICIPANT_JOINED_FILE, PARTICIPANT_LEFT_FILE } from './sounds';
import { IJitsiParticipant } from './types';
import './subscriber';
/**
* Middleware that captures CONFERENCE_JOINED and CONFERENCE_LEFT actions and
* updates respectively ID of local participant.
*
* @param {Store} store - The redux store.
* @returns {Function}
*/
MiddlewareRegistry.register(store => next => action => {
switch (action.type) {
case APP_WILL_MOUNT:
_registerSounds(store);
return _localParticipantJoined(store, next, action);
case APP_WILL_UNMOUNT:
_unregisterSounds(store);
return _localParticipantLeft(store, next, action);
case CONFERENCE_WILL_JOIN:
store.dispatch(localParticipantIdChanged(action.conference.myUserId()));
break;
case DOMINANT_SPEAKER_CHANGED: {
// Lower hand through xmpp when local participant becomes dominant speaker.
const { id } = action.participant;
const state = store.getState();
const participant = getLocalParticipant(state);
const dominantSpeaker = getDominantSpeakerParticipant(state);
const isLocal = participant && participant.id === id;
if (isLocal && dominantSpeaker?.id !== id
&& hasRaisedHand(participant)
&& !getDisableRemoveRaisedHandOnFocus(state)) {
store.dispatch(raiseHand(false));
}
break;
}
case LOCAL_PARTICIPANT_AUDIO_LEVEL_CHANGED: {
const state = store.getState();
const participant = getDominantSpeakerParticipant(state);
if (
participant?.local
&& hasRaisedHand(participant)
&& action.level > LOWER_HAND_AUDIO_LEVEL
&& !getDisableRemoveRaisedHandOnFocus(state)
) {
store.dispatch(raiseHand(false));
}
break;
}
case GRANT_MODERATOR: {
const { conference } = store.getState()['features/base/conference'];
conference?.grantOwner(action.id);
break;
}
case KICK_PARTICIPANT: {
const { conference } = store.getState()['features/base/conference'];
conference?.kickParticipant(action.id);
break;
}
case LOCAL_PARTICIPANT_RAISE_HAND: {
const { raisedHandTimestamp } = action;
const localId = getLocalParticipant(store.getState())?.id;
store.dispatch(participantUpdated({
// XXX Only the local participant is allowed to update without
// stating the JitsiConference instance (i.e. participant property
// `conference` for a remote participant) because the local
// participant is uniquely identified by the very fact that there is
// only one local participant.
id: localId ?? '',
local: true,
raisedHandTimestamp
}));
store.dispatch(raiseHandUpdateQueue({
id: localId ?? '',
raisedHandTimestamp
}));
if (typeof APP !== 'undefined') {
APP.API.notifyRaiseHandUpdated(localId, raisedHandTimestamp);
}
break;
}
case SET_CONFIG: {
const result = next(action);
const state = store.getState();
const { deploymentInfo } = state['features/base/config'];
// if there userRegion set let's use it for the local participant
if (deploymentInfo?.userRegion) {
const localId = getLocalParticipant(state)?.id;
if (localId) {
store.dispatch(participantUpdated({
id: localId,
local: true,
region: deploymentInfo.userRegion
}));
}
}
return result;
}
case SET_LOCAL_PARTICIPANT_RECORDING_STATUS: {
const state = store.getState();
const { recording, onlySelf } = action;
const localId = getLocalParticipant(state)?.id;
const { localRecording } = state['features/base/config'];
if (localRecording?.notifyAllParticipants && !onlySelf && localId) {
store.dispatch(participantUpdated({
// XXX Only the local participant is allowed to update without
// stating the JitsiConference instance (i.e. participant property
// `conference` for a remote participant) because the local
// participant is uniquely identified by the very fact that there is
// only one local participant.
id: localId,
local: true,
localRecording: recording
}));
}
break;
}
case MUTE_REMOTE_PARTICIPANT: {
const { conference } = store.getState()['features/base/conference'];
conference?.muteParticipant(action.id, action.mediaType);
break;
}
// TODO Remove this middleware when the local display name update flow is
// fully brought into redux.
case PARTICIPANT_DISPLAY_NAME_CHANGED: {
if (typeof APP !== 'undefined') {
const participant = getLocalParticipant(store.getState());
if (participant && participant.id === action.id) {
APP.UI.emitEvent(UIEvents.NICKNAME_CHANGED, action.name);
}
}
break;
}
case RAISE_HAND_UPDATED: {
const { participant } = action;
let queue = getRaiseHandsQueue(store.getState());
if (participant.raisedHandTimestamp) {
queue.push({
id: participant.id,
raisedHandTimestamp: participant.raisedHandTimestamp
});
// sort the queue before adding to store.
queue = queue.sort(({ raisedHandTimestamp: a }, { raisedHandTimestamp: b }) => a - b);
} else {
// no need to sort on remove value.
queue = queue.filter(({ id }) => id !== participant.id);
}
action.queue = queue;
break;
}
case PARTICIPANT_JOINED: {
// Do not play sounds when a screenshare or whiteboard participant tile is created for screenshare.
(!isScreenShareParticipant(action.participant)
&& !isWhiteboardParticipant(action.participant)
) && _maybePlaySounds(store, action);
return _participantJoinedOrUpdated(store, next, action);
}
case PARTICIPANT_LEFT: {
// Do not play sounds when a tile for screenshare or whiteboard is removed.
(!isScreenShareParticipant(action.participant)
&& !isWhiteboardParticipant(action.participant)
) && _maybePlaySounds(store, action);
break;
}
case PARTICIPANT_UPDATED:
return _participantJoinedOrUpdated(store, next, action);
case OVERWRITE_PARTICIPANTS_NAMES: {
const { participantList } = action;
if (!Array.isArray(participantList)) {
logger.error('Overwrite names failed. Argument is not an array.');
return;
}
batch(() => {
participantList.forEach(p => {
store.dispatch(overwriteParticipantName(p.id, p.name));
});
});
break;
}
case OVERWRITE_PARTICIPANT_NAME: {
const { dispatch, getState } = store;
const state = getState();
const { id, name } = action;
let breakoutRoom = false, identifier = id;
if (id.indexOf('@') !== -1) {
identifier = id.slice(id.indexOf('/') + 1);
breakoutRoom = true;
action.id = identifier;
}
if (breakoutRoom) {
const rooms = getBreakoutRooms(state);
const roomCounter = state['features/breakout-rooms'].roomCounter;
const newRooms: any = {};
Object.entries(rooms).forEach(([ key, r ]) => {
const participants = r?.participants || {};
const jid = Object.keys(participants).find(p =>
p.slice(p.indexOf('/') + 1) === identifier);
if (jid) {
newRooms[key] = {
...r,
participants: {
...participants,
[jid]: {
...participants[jid],
displayName: name
}
}
};
} else {
newRooms[key] = r;
}
});
dispatch({
type: UPDATE_BREAKOUT_ROOMS,
rooms,
roomCounter,
updatedNames: true
});
} else {
dispatch(participantUpdated({
id: identifier,
name
}));
}
break;
}
}
return next(action);
});
/**
* Syncs the redux state features/base/participants up with the redux state
* features/base/conference by ensuring that the former does not contain remote
* participants no longer relevant to the latter. Introduced to address an issue
* with multiplying thumbnails in the filmstrip.
*/
StateListenerRegistry.register(
/* selector */ state => getCurrentConference(state),
/* listener */ (conference, { dispatch, getState }) => {
batch(() => {
for (const [ id, p ] of getRemoteParticipants(getState())) {
(!conference || p.conference !== conference)
&& dispatch(participantLeft(id, p.conference, {
isReplaced: p.isReplaced
}));
}
});
});
/**
* Reset the ID of the local participant to
* {@link LOCAL_PARTICIPANT_DEFAULT_ID}. Such a reset is deemed possible only if
* the local participant and, respectively, her ID is not involved in a
* conference which is still of interest to the user and, consequently, the app.
* For example, a conference which is in the process of leaving is no longer of
* interest the user, is unrecoverable from the perspective of the user and,
* consequently, the app.
*/
StateListenerRegistry.register(
/* selector */ state => state['features/base/conference'],
/* listener */ ({ leaving }, { dispatch, getState }) => {
const state = getState();
const localParticipant = getLocalParticipant(state);
let id: string;
if (!localParticipant
|| (id = localParticipant.id)
=== LOCAL_PARTICIPANT_DEFAULT_ID) {
// The ID of the local participant has been reset already.
return;
}
// The ID of the local may be reset only if it is not in use.
const dispatchLocalParticipantIdChanged
= forEachConference(
state,
conference =>
conference === leaving || conference.myUserId() !== id);
dispatchLocalParticipantIdChanged
&& dispatch(
localParticipantIdChanged(LOCAL_PARTICIPANT_DEFAULT_ID));
});
/**
* Registers listeners for participant change events.
*/
StateListenerRegistry.register(
state => state['features/base/conference'].conference,
(conference, store) => {
if (conference) {
const propertyHandlers: {
[key: string]: Function;
} = {
'e2ee.enabled': (participant: IJitsiParticipant, value: string) =>
_e2eeUpdated(store, conference, participant.getId(), value),
'features_e2ee': (participant: IJitsiParticipant, value: boolean) =>
store.dispatch(participantUpdated({
conference,
id: participant.getId(),
e2eeSupported: value
})),
'features_jigasi': (participant: IJitsiParticipant, value: boolean) =>
store.dispatch(participantUpdated({
conference,
id: participant.getId(),
isJigasi: value
})),
// eslint-disable-next-line @typescript-eslint/no-unused-vars
'features_screen-sharing': (participant: IJitsiParticipant, value: string) =>
store.dispatch(participantUpdated({
conference,
id: participant.getId(),
features: { 'screen-sharing': true }
})),
'localRecording': (participant: IJitsiParticipant, value: string) =>
_localRecordingUpdated(store, conference, participant.getId(), value),
'raisedHand': (participant: IJitsiParticipant, value: string) =>
_raiseHandUpdated(store, conference, participant.getId(), value),
'region': (participant: IJitsiParticipant, value: string) =>
store.dispatch(participantUpdated({
conference,
id: participant.getId(),
region: value
})),
'remoteControlSessionStatus': (participant: IJitsiParticipant, value: boolean) =>
store.dispatch(participantUpdated({
conference,
id: participant.getId(),
remoteControlSessionStatus: value
}))
};
// update properties for the participants that are already in the conference
conference.getParticipants().forEach((participant: any) => {
Object.keys(propertyHandlers).forEach(propertyName => {
const value = participant.getProperty(propertyName);
if (value !== undefined) {
propertyHandlers[propertyName as keyof typeof propertyHandlers](participant, value);
}
});
});
// We joined a conference
conference.on(
JitsiConferenceEvents.PARTICIPANT_PROPERTY_CHANGED,
(participant: IJitsiParticipant, propertyName: string, oldValue: string, newValue: string) => {
if (propertyHandlers.hasOwnProperty(propertyName)) {
propertyHandlers[propertyName](participant, newValue);
}
});
} else {
const localParticipantId = getLocalParticipant(store.getState)?.id;
// We left the conference, the local participant must be updated.
_e2eeUpdated(store, conference, localParticipantId ?? '', false);
_raiseHandUpdated(store, conference, localParticipantId ?? '', 0);
}
}
);
/**
* Handles a E2EE enabled status update.
*
* @param {Store} store - The redux store.
* @param {Object} conference - The conference for which we got an update.
* @param {string} participantId - The ID of the participant from which we got an update.
* @param {boolean} newValue - The new value of the E2EE enabled status.
* @returns {void}
*/
function _e2eeUpdated({ getState, dispatch }: IStore, conference: IJitsiConference,
participantId: string, newValue: string | boolean) {
const e2eeEnabled = newValue === 'true';
const { e2ee = {} } = getState()['features/base/config'];
dispatch(participantUpdated({
conference,
id: participantId,
e2eeEnabled
}));
if (e2ee.externallyManagedKey) {
return;
}
const { maxMode } = getState()['features/e2ee'] || {};
if (maxMode !== MAX_MODE.THRESHOLD_EXCEEDED || !e2eeEnabled) {
dispatch(toggleE2EE(e2eeEnabled));
}
}
/**
* Initializes the local participant and signals that it joined.
*
* @private
* @param {Store} store - The redux store.
* @param {Dispatch} next - The redux dispatch function to dispatch the
* specified action to the specified store.
* @param {Action} action - The redux action which is being dispatched
* in the specified store.
* @private
* @returns {Object} The value returned by {@code next(action)}.
*/
function _localParticipantJoined({ getState, dispatch }: IStore, next: Function, action: any) {
const result = next(action);
const settings = getState()['features/base/settings'];
// @ts-ignore
dispatch(localParticipantJoined({
avatarURL: settings.avatarURL,
email: settings.email,
name: settings.displayName
}));
return result;
}
/**
* Signals that the local participant has left.
*
* @param {Store} store - The redux store.
* @param {Dispatch} next - The redux {@code dispatch} function to dispatch the
* specified {@code action} into the specified {@code store}.
* @param {Action} action - The redux action which is being dispatched in the
* specified {@code store}.
* @private
* @returns {Object} The value returned by {@code next(action)}.
*/
function _localParticipantLeft({ dispatch }: IStore, next: Function, action: any) {
const result = next(action);
dispatch(localParticipantLeft());
return result;
}
/**
* Plays sounds when participants join/leave conference.
*
* @param {Store} store - The redux store.
* @param {Action} action - The redux action. Should be either
* {@link PARTICIPANT_JOINED} or {@link PARTICIPANT_LEFT}.
* @private
* @returns {void}
*/
function _maybePlaySounds({ getState, dispatch }: IStore, action: any) {
const state = getState();
const { startAudioMuted } = state['features/base/config'];
const { soundsParticipantJoined: joinSound, soundsParticipantLeft: leftSound } = state['features/base/settings'];
// We're not playing sounds for local participant
// nor when the user is joining past the "startAudioMuted" limit.
// The intention there was to not play user joined notification in big
// conferences where 100th person is joining.
if (!action.participant.local
&& (!startAudioMuted
|| getParticipantCount(state) < startAudioMuted)) {
const { isReplacing, isReplaced } = action.participant;
if (action.type === PARTICIPANT_JOINED) {
if (!joinSound) {
return;
}
const { presence } = action.participant;
// The sounds for the poltergeist are handled by features/invite.
if (presence !== INVITED && presence !== CALLING && !isReplacing) {
dispatch(playSound(PARTICIPANT_JOINED_SOUND_ID));
}
} else if (action.type === PARTICIPANT_LEFT && !isReplaced && leftSound) {
dispatch(playSound(PARTICIPANT_LEFT_SOUND_ID));
}
}
}
/**
* Notifies the feature base/participants that the action
* {@code PARTICIPANT_JOINED} or {@code PARTICIPANT_UPDATED} is being dispatched
* within a specific redux store.
*
* @param {Store} store - The redux store in which the specified {@code action}
* is being dispatched.
* @param {Dispatch} next - The redux {@code dispatch} function to dispatch the
* specified {@code action} in the specified {@code store}.
* @param {Action} action - The redux action {@code PARTICIPANT_JOINED} or
* {@code PARTICIPANT_UPDATED} which is being dispatched in the specified
* {@code store}.
* @private
* @returns {Object} The value returned by {@code next(action)}.
*/
function _participantJoinedOrUpdated(store: IStore, next: Function, action: any) {
const { dispatch, getState } = store;
const { overwrittenNameList } = store.getState()['features/base/participants'];
const { participant: {
avatarURL,
email,
id,
local,
localRecording,
name,
raisedHandTimestamp
} } = action;
// Send an external update of the local participant's raised hand state
// if a new raised hand state is defined in the action.
if (typeof raisedHandTimestamp !== 'undefined') {
if (local) {
const { conference } = getState()['features/base/conference'];
const rHand = parseInt(raisedHandTimestamp, 10);
// Send raisedHand signalling only if there is a change
if (conference && rHand !== getLocalParticipant(getState())?.raisedHandTimestamp) {
conference.setLocalParticipantProperty('raisedHand', rHand);
}
}
}
if (overwrittenNameList[id]) {
action.participant.name = overwrittenNameList[id];
}
// Send an external update of the local participant's local recording state
// if a new local recording state is defined in the action.
if (typeof localRecording !== 'undefined') {
if (local) {
const conference = getCurrentConference(getState);
// Send localRecording signalling only if there is a change
if (conference
&& localRecording !== getLocalParticipant(getState())?.localRecording) {
conference.setLocalParticipantProperty('localRecording', localRecording);
}
}
}
// Allow the redux update to go through and compare the old avatar
// to the new avatar and emit out change events if necessary.
const result = next(action);
// Only run this if the config is populated, otherwise we preload external resources
// even if disableThirdPartyRequests is set to true in config
if (Object.keys(getState()['features/base/config']).length) {
const { disableThirdPartyRequests } = getState()['features/base/config'];
if (!disableThirdPartyRequests && (avatarURL || email || id || name)) {
const participantId = !id && local ? getLocalParticipant(getState())?.id : id;
const updatedParticipant = getParticipantById(getState(), participantId);
getFirstLoadableAvatarUrl(updatedParticipant ?? { id: '' }, store)
.then((urlData?: { isUsingCORS: boolean; src: string; }) => {
dispatch(setLoadableAvatarUrl(participantId, urlData?.src ?? '', Boolean(urlData?.isUsingCORS)));
});
}
}
return result;
}
/**
* Handles a local recording status update.
*
* @param {Function} dispatch - The Redux dispatch function.
* @param {Object} conference - The conference for which we got an update.
* @param {string} participantId - The ID of the participant from which we got an update.
* @param {boolean} newValue - The new value of the local recording status.
* @returns {void}
*/
function _localRecordingUpdated({ dispatch, getState }: IStore, conference: IJitsiConference,
participantId: string, newValue: string) {
const state = getState();
dispatch(participantUpdated({
conference,
id: participantId,
localRecording: newValue
}));
const participantName = getParticipantDisplayName(state, participantId);
dispatch(showNotification({
titleKey: 'notify.somebody',
title: participantName,
descriptionKey: newValue ? 'notify.localRecordingStarted' : 'notify.localRecordingStopped',
uid: LOCAL_RECORDING_NOTIFICATION_ID
}, NOTIFICATION_TIMEOUT_TYPE.MEDIUM));
dispatch(playSound(newValue ? RECORDING_ON_SOUND_ID : RECORDING_OFF_SOUND_ID));
}
/**
* Handles a raise hand status update.
*
* @param {Function} dispatch - The Redux dispatch function.
* @param {Object} conference - The conference for which we got an update.
* @param {string} participantId - The ID of the participant from which we got an update.
* @param {boolean} newValue - The new value of the raise hand status.
* @returns {void}
*/
function _raiseHandUpdated({ dispatch, getState }: IStore, conference: IJitsiConference,
participantId: string, newValue: string | number) {
let raisedHandTimestamp;
switch (newValue) {
case undefined:
case 'false':
raisedHandTimestamp = 0;
break;
case 'true':
raisedHandTimestamp = Date.now();
break;
default:
raisedHandTimestamp = parseInt(`${newValue}`, 10);
}
const state = getState();
dispatch(participantUpdated({
conference,
id: participantId,
raisedHandTimestamp
}));
dispatch(raiseHandUpdateQueue({
id: participantId,
raisedHandTimestamp
}));
if (typeof APP !== 'undefined') {
APP.API.notifyRaiseHandUpdated(participantId, raisedHandTimestamp);
}
const isModerator = isLocalParticipantModerator(state);
const participant = getParticipantById(state, participantId);
let shouldDisplayAllowAction = false;
if (isModerator) {
shouldDisplayAllowAction = isForceMuted(participant, MEDIA_TYPE.AUDIO, state)
|| isForceMuted(participant, MEDIA_TYPE.VIDEO, state);
}
const action = shouldDisplayAllowAction ? {
customActionNameKey: [ 'notify.allowAction' ],
customActionHandler: [ () => dispatch(approveParticipant(participantId)) ]
} : {};
if (raisedHandTimestamp) {
let notificationTitle;
const participantName = getParticipantDisplayName(state, participantId);
const { raisedHandsQueue } = state['features/base/participants'];
if (raisedHandsQueue.length > 1) {
const raisedHands = raisedHandsQueue.length - 1;
notificationTitle = i18n.t('notify.raisedHands', {
participantName,
raisedHands
});
} else {
notificationTitle = participantName;
}
dispatch(showNotification({
titleKey: 'notify.somebody',
title: notificationTitle,
descriptionKey: 'notify.raisedHand',
concatText: true,
uid: RAISE_HAND_NOTIFICATION_ID,
...action
}, shouldDisplayAllowAction ? NOTIFICATION_TIMEOUT_TYPE.MEDIUM : NOTIFICATION_TIMEOUT_TYPE.SHORT));
dispatch(playSound(RAISE_HAND_SOUND_ID));
}
}
/**
* Registers sounds related with the participants feature.
*
* @param {Store} store - The redux store.
* @private
* @returns {void}
*/
function _registerSounds({ dispatch }: IStore) {
dispatch(
registerSound(PARTICIPANT_JOINED_SOUND_ID, PARTICIPANT_JOINED_FILE));
dispatch(registerSound(PARTICIPANT_LEFT_SOUND_ID, PARTICIPANT_LEFT_FILE));
}
/**
* Unregisters sounds related with the participants feature.
*
* @param {Store} store - The redux store.
* @private
* @returns {void}
*/
function _unregisterSounds({ dispatch }: IStore) {
dispatch(unregisterSound(PARTICIPANT_JOINED_SOUND_ID));
dispatch(unregisterSound(PARTICIPANT_LEFT_SOUND_ID));
}