fix: Adds display name to notifications about lobby operations.

Display name for lobby operations notifications are taken from the list of knocking participants which is available only to moderators. In case of not all moderators the notifications were broken.

react/features/lobby/functions.js

 // @flow
 
 import { getCurrentConference } from '../base/conference';
-import { toState } from '../base/redux';
-
-const JID_PATTERN = '[^@]+@[^/]+/(.+)';
-
-/**
- * Returns a knocking participant by ID or JID.
- *
- * @param {Function | Object} stateful - The Redux state or a function that resolves to the Redux state.
- * @param {string} id - The ID or JID of the participant.
- * @returns {Object}
- */
-export function getKnockingParticipantById(stateful: Function | Object, id: string): Object {
-    const { knockingParticipants } = toState(stateful)['features/lobby'];
-    const idToFind = getIdFromJid(id) || id;
-
-    return knockingParticipants.find(p => p.id === idToFind);
-}
 
 /**
  * Approves (lets in) or rejects a knocking participant.
         }
     }
 }
-
-/**
- * Parses an ID from a JID, if a JID is provided, undefined otherwise.
- *
- * @param {string} jid - The JID to get the ID from.
- * @returns {?string}
- */
-function getIdFromJid(jid: string): ?string {
-    const match = new RegExp(JID_PATTERN, 'g').exec(jid) || [];
-
-    return match[1];
-}

react/features/lobby/middleware.js

     startKnocking,
     setPasswordJoinFailed
 } from './actions';
-import { getKnockingParticipantById } from './functions';
 
 MiddlewareRegistry.register(store => next => action => {
     switch (action.type) {
 
     const notificationProps: any = {
         descriptionArguments: {
-            originParticipantName: getParticipantDisplayName(getState, origin._id)
+            originParticipantName: getParticipantDisplayName(getState, origin._id),
+            targetParticipantName: message.name
         },
         titleKey: 'lobby.notificationTitle'
     };
         break;
     case 'LOBBY-ACCESS-GRANTED':
         notificationProps.descriptionKey = 'lobby.notificationLobbyAccessGranted';
-        notificationProps.descriptionArguments.targetParticipantName
-            = getKnockingParticipantById(getState, message.value)?.name;
         break;
     case 'LOBBY-ACCESS-DENIED':
         notificationProps.descriptionKey = 'lobby.notificationLobbyAccessDenied';
-        notificationProps.descriptionArguments.targetParticipantName
-            = getKnockingParticipantById(getState, message.value)?.name;
         break;
     }
 

resources/prosody-plugins/mod_muc_lobby_rooms.lua

 
 -- Sends a json message notifying that the jid was granted/denied access in lobby
 -- the message from is the actor that did the operation
-function notify_lobby_access(room, actor, jid, granted)
+function notify_lobby_access(room, actor, jid, display_name, granted)
     local notify_json = {
-        value = jid
+        value = jid,
+        name = display_name
     };
     if granted then
         notify_json.event = NOTIFY_LOBBY_ACCESS_GRANTED;
     host_module:hook('muc-broadcast-presence', function (event)
         local actor, occupant, room, x = event.actor, event.occupant, event.room, event.x;
         if check_status(x, '307') then
+            local display_name = occupant:get_presence():get_child_text(
+                'nick', 'http://jabber.org/protocol/nick');
             -- we need to notify in the main room
-            notify_lobby_access(room.main_room, actor, occupant.nick, false);
+            notify_lobby_access(room.main_room, actor, occupant.nick, display_name, false);
         end
     end);
 end
         if room._data.lobbyroom then
             local occupant = room._data.lobbyroom:get_occupant_by_real_jid(invitee);
             if occupant then
-                notify_lobby_access(room, from, occupant.nick, true);
+                local display_name = occupant:get_presence():get_child_text(
+                    'nick', 'http://jabber.org/protocol/nick');
+
+                notify_lobby_access(room, from, occupant.nick, display_name, true);
             end
         end
     end);
 module:hook_global('bosh-session', update_session);
 module:hook_global('websocket-session', update_session);
 module:hook_global('config-reloaded', load_config);
-module:hook_global('create-lobby-room', handle_create_lobby);
+module:hook_global('create-lobby-room', handle_create_lobby);