From 1c4283eecabd481cb2d2795840196fbfe36e7534 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=94=D0=B0=D0=BC=D1=8F=D0=BD=20=D0=9C=D0=B8=D0=BD=D0=BA?=
 =?UTF-8?q?=D0=BE=D0=B2?= <damencho@jitsi.org>
Date: Wed, 22 Dec 2021 10:55:08 -0600
Subject: [PATCH] feat: Edits messages display name on breakout info received.
 Fixes #10671.

---
 react/features/breakout-rooms/middleware.js | 39 ++++++++++++++++++++-
 1 file changed, 38 insertions(+), 1 deletion(-)

diff --git a/react/features/breakout-rooms/middleware.js b/react/features/breakout-rooms/middleware.js
index d3f3d3777..88b611a89 100644
--- a/react/features/breakout-rooms/middleware.js
+++ b/react/features/breakout-rooms/middleware.js
@@ -1,10 +1,13 @@
 // @flow
 
 import { JitsiConferenceEvents } from '../base/lib-jitsi-meet';
-import { StateListenerRegistry } from '../base/redux';
+import { getParticipantById } from '../base/participants';
+import { MiddlewareRegistry, StateListenerRegistry } from '../base/redux';
+import { editMessage, MESSAGE_TYPE_REMOTE } from '../chat';
 
 import { UPDATE_BREAKOUT_ROOMS } from './actionTypes';
 import { moveToRoom } from './actions';
+import { getBreakoutRooms } from './functions';
 import logger from './logger';
 
 /**
@@ -30,3 +33,37 @@ StateListenerRegistry.register(
             });
         }
     });
+
+MiddlewareRegistry.register(({ dispatch, getState }) => next => action => {
+    const { type } = action;
+    const result = next(action);
+
+    switch (type) {
+    case UPDATE_BREAKOUT_ROOMS: {
+        const { messages } = getState()['features/chat'];
+
+        // edit the chat history to match names for participants in breakout rooms
+        messages && messages.forEach(m => {
+            if (m.messageType === MESSAGE_TYPE_REMOTE && !getParticipantById(getState(), m.id)) {
+                const rooms = getBreakoutRooms(getState);
+
+                for (const room of Object.values(rooms)) {
+                    // $FlowExpectedError
+                    const participants = room.participants || {};
+                    const matchedJid = Object.keys(participants).find(jid => jid.endsWith(m.id));
+
+                    if (matchedJid) {
+                        m.displayName = participants[matchedJid].displayName;
+
+                        dispatch(editMessage(m));
+                    }
+                }
+            }
+        });
+
+        break;
+    }
+    }
+
+    return result;
+});