From 4c31aa574defbc20ee81c39b636e4493e72c2aed Mon Sep 17 00:00:00 2001
From: Elaine <138257830+elaine-signal@users.noreply.github.com>
Date: Thu, 27 Feb 2025 12:46:29 -0700
Subject: [PATCH] Preserve pinned chat order

---
 .../ViewControllers/HomeView/Chat List/CLVLoader.swift   | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/Signal/src/ViewControllers/HomeView/Chat List/CLVLoader.swift b/Signal/src/ViewControllers/HomeView/Chat List/CLVLoader.swift
index 2ec3aab5fd..fc4de19693 100644
--- a/Signal/src/ViewControllers/HomeView/Chat List/CLVLoader.swift	
+++ b/Signal/src/ViewControllers/HomeView/Chat List/CLVLoader.swift	
@@ -88,19 +88,22 @@ public class CLVLoader {
             )
         }
 
-        var pinnedThreadUniqueIdsForRender = [String]()
+        var pinnedThreadUniqueIdsToRender = Set<String>()
         var unpinnedThreadUniqueIdsForRender = [String]()
         for threadUniqueId in visibleThreadUniqueIds {
             if !isViewingArchive && pinnedThreadUniqueIds.contains(threadUniqueId) {
-                pinnedThreadUniqueIdsForRender.append(threadUniqueId)
+                pinnedThreadUniqueIdsToRender.insert(threadUniqueId)
             } else {
                 unpinnedThreadUniqueIdsForRender.append(threadUniqueId)
             }
         }
 
+        // Preserve the order from pinnedThreadUniqueIds
+        let orderedPinnedThreadUniqueIdsForRender = pinnedThreadUniqueIds.filter(pinnedThreadUniqueIdsToRender.contains(_:))
+
         return CLVRenderState(
             viewInfo: viewInfo,
-            pinnedThreadUniqueIds: pinnedThreadUniqueIdsForRender,
+            pinnedThreadUniqueIds: orderedPinnedThreadUniqueIdsForRender,
             unpinnedThreadUniqueIds: unpinnedThreadUniqueIdsForRender
         )
     }