From c986ea7953e8e246ab667ceffa9e9e39247701e7 Mon Sep 17 00:00:00 2001
From: Alexander Zinchuk <alx.zinchuk@gmail.com>
Date: Sun, 23 Jul 2023 10:08:11 +0200
Subject: [PATCH] [Perf] Fix broken `addUsers/addChats` optimization

---
 src/global/reducers/chats.ts | 6 ++++++
 src/global/reducers/users.ts | 8 +++++++-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/global/reducers/chats.ts b/src/global/reducers/chats.ts
index ffc2fa865..505f097b7 100644
--- a/src/global/reducers/chats.ts
+++ b/src/global/reducers/chats.ts
@@ -141,6 +141,11 @@ export function addChats<T extends GlobalState>(global: T, newById: Record<strin
   let isUpdated = false;
 
   const addedById = Object.keys(newById).reduce<Record<string, ApiChat>>((acc, id) => {
+    const existingChat = byId[id];
+    if (existingChat && !existingChat.isMin) {
+      return acc;
+    }
+
     const updatedChat = getUpdatedChat(global, id, newById[id]);
     if (updatedChat) {
       acc[id] = updatedChat;
@@ -148,6 +153,7 @@ export function addChats<T extends GlobalState>(global: T, newById: Record<strin
         isUpdated = true;
       }
     }
+
     return acc;
   }, {});
 
diff --git a/src/global/reducers/users.ts b/src/global/reducers/users.ts
index 725fd2a9e..686032de6 100644
--- a/src/global/reducers/users.ts
+++ b/src/global/reducers/users.ts
@@ -1,4 +1,4 @@
-import type { TabState, GlobalState, TabArgs } from '../types';
+import type { GlobalState, TabArgs, TabState } from '../types';
 import type { ApiUser, ApiUserFullInfo, ApiUserStatus } from '../../api/types';
 
 import { omit, pick } from '../../util/iteratees';
@@ -83,6 +83,11 @@ export function addUsers<T extends GlobalState>(global: T, newById: Record<strin
   let isUpdated = false;
 
   const addedById = Object.keys(newById).reduce<Record<string, ApiUser>>((acc, id) => {
+    const existingUser = byId[id];
+    if (existingUser && !existingUser.isMin) {
+      return acc;
+    }
+
     const updatedUser = getUpdatedUser(global, id, newById[id]);
     if (updatedUser) {
       acc[id] = updatedUser;
@@ -90,6 +95,7 @@ export function addUsers<T extends GlobalState>(global: T, newById: Record<strin
         isUpdated = true;
       }
     }
+
     return acc;
   }, {});