feat(external-api) expose mute remote command and participant muted event (#16768)

modules/API/API.js

@@ -126,7 +126,7 @@ import { extractYoutubeIdOrURL } from '../../react/features/shared-video/functio
 import { setRequestingSubtitles, toggleRequestingSubtitles } from '../../react/features/subtitles/actions';
 import { isAudioMuteButtonDisabled } from '../../react/features/toolbox/functions';
 import { setTileView, toggleTileView } from '../../react/features/video-layout/actions.any';
-import { muteAllParticipants } from '../../react/features/video-menu/actions';
+import { muteAllParticipants, muteRemote } from '../../react/features/video-menu/actions';
 import { setVideoQuality } from '../../react/features/video-quality/actions';
 import { toggleBackgroundEffect, toggleBlurredBackgroundEffect } from '../../react/features/virtual-background/actions';
 import { VIRTUAL_BACKGROUND_TYPE } from '../../react/features/virtual-background/constants';
@@ -239,6 +239,17 @@ function initCommands() {
 
             APP.store.dispatch(muteAllParticipants(exclude, muteMediaType));
         },
+        'mute-remote-participant': (participantId, mediaType) => {
+            if (!isLocalParticipantModerator(APP.store.getState())) {
+                logger.error('Missing moderator rights to mute remote participant');
+
+                return;
+            }
+
+            const muteMediaType = mediaType ? mediaType : MEDIA_TYPE.AUDIO;
+
+            APP.store.dispatch(muteRemote(participantId, muteMediaType));
+        },
         'toggle-lobby': isLobbyEnabled => {
             APP.store.dispatch(toggleLobbyMode(isLobbyEnabled));
         },
@@ -1401,6 +1412,25 @@ class API {
         });
     }
 
+    /**
+     * Notify the external application that a participant's mute status changed.
+     *
+     * @param {string} participantId - The ID of the participant.
+     * @param {boolean} isMuted - True if muted, false if unmuted.
+     * @param {string} mediaType - Media type that was muted ('audio', 'video', or 'desktop').
+     * @param {boolean} isSelfMuted - True if participant muted themselves, false if muted by moderator.
+     * @returns {void}
+     */
+    notifyParticipantMuted(participantId, isMuted, mediaType, isSelfMuted = true) {
+        this._sendEvent({
+            name: 'participant-muted',
+            id: participantId,
+            isMuted,
+            mediaType,
+            isSelfMuted
+        });
+    }
+
     /**
      * Notify the external app that a notification has been triggered.
      *