From 9f1304bca8846d5f576a54d43270eb7e619f9a80 Mon Sep 17 00:00:00 2001
From: Ken Powers <ken@signal.org>
Date: Fri, 12 Jun 2020 17:07:45 -0400
Subject: [PATCH] Prevent duplicate message history disclaimers

---
 js/models/conversations.js | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/js/models/conversations.js b/js/models/conversations.js
index 8162a9fa07..0a2075ee18 100644
--- a/js/models/conversations.js
+++ b/js/models/conversations.js
@@ -1666,6 +1666,15 @@
     },
 
     async addMessageHistoryDisclaimer() {
+      const lastMessage = this.messageCollection.last();
+      if (
+        lastMessage &&
+        lastMessage.get('type') === 'message-history-unsynced'
+      ) {
+        // We do not need another message history disclaimer
+        return lastMessage;
+      }
+
       const timestamp = Date.now();
 
       const model = new Whisper.Message({