From 7900a3e17fdb3577f6c1eb734576c6f7997ce21d Mon Sep 17 00:00:00 2001
From: moonrailgun <moonrailgun@gmail.com>
Date: Sat, 12 Aug 2023 16:29:18 +0800
Subject: [PATCH] fix: fix message ack not trigger update problem

---
 client/shared/redux/slices/chat.ts | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/client/shared/redux/slices/chat.ts b/client/shared/redux/slices/chat.ts
index c897652d..d2123e99 100644
--- a/client/shared/redux/slices/chat.ts
+++ b/client/shared/redux/slices/chat.ts
@@ -94,16 +94,16 @@ const chatSlice = createSlice({
 
       state.converses[converseId].messages = newMessages;
 
-      const lastMessageId = _last(
-        newMessages.filter((m) => !isLocalMessageId(m._id))
-      )?._id;
-
-      if (isValidStr(lastMessageId)) {
-        state.lastMessageMap[converseId] = lastMessageId;
-
-        if (state.currentConverseId === converseId) {
-          // 如果是当前会话，则立即已读
-          state.ack[converseId] = lastMessageId;
+      /**
+       * 如果在当前会话中，则暂时不更新最后收到的消息的本地状态，避免可能出现的瞬间更新最后消息(出现小红点) 但是会立即已读（小红点消失）
+       * 所以仅对非当前会话的消息进行更新最后消息
+       */
+      if (state.currentConverseId !== converseId) {
+        const lastMessageId = _last(
+          newMessages.filter((m) => !isLocalMessageId(m._id))
+        )?._id;
+        if (isValidStr(lastMessageId)) {
+          state.lastMessageMap[converseId] = lastMessageId;
         }
       }
     },