feat(external-api) Forward CONFERENCE_CREATED_TIMESTAMP to iframe

conference.js

@@ -1637,7 +1637,11 @@ export default {
 
         room.on(
             JitsiConferenceEvents.CONFERENCE_CREATED_TIMESTAMP,
-            conferenceTimestamp => APP.store.dispatch(conferenceTimestampChanged(conferenceTimestamp)));
+            conferenceTimestamp => {
+                APP.store.dispatch(conferenceTimestampChanged(conferenceTimestamp));
+                APP.API.notifyConferenceCreatedTimestamp(conferenceTimestamp);
+            }
+        );
 
         room.on(
             JitsiConferenceEvents.DISPLAY_NAME_CHANGED,

modules/API/API.js

@@ -2138,6 +2138,21 @@ class API {
     }
 
 
+    /**
+     * Notify external application (if API is enabled) the conference
+     * start time.
+     *
+     * @param {number} timestamp - Timestamp conference was created.
+     * @returns {void}
+     */
+    notifyConferenceCreatedTimestamp(timestamp) {
+        this._sendEvent({
+            name: 'conference-created-timestamp',
+            timestamp
+        });
+    }
+
+
     /**
      * Notify the external application (if API is enabled) if the connection type changed.
      *

modules/API/external/external_api.js

@@ -108,6 +108,7 @@ const events = {
     'camera-error': 'cameraError',
     'chat-updated': 'chatUpdated',
     'compute-pressure-changed': 'computePressureChanged',
+    'conference-created-timestamp': 'conferenceCreatedTimestamp',
     'content-sharing-participants-changed': 'contentSharingParticipantsChanged',
     'data-channel-closed': 'dataChannelClosed',
     'data-channel-opened': 'dataChannelOpened',