From cd087113e3f76f9c5ee4b11edd8a98a3ed533e21 Mon Sep 17 00:00:00 2001
From: Greyson Parrelli <greyson@signal.org>
Date: Wed, 4 Feb 2026 12:27:52 -0500
Subject: [PATCH] Ensure that notification heuristics are calculated in the
 background.

---
 .../app/notifications/NotificationsSettingsViewModel.kt  | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/org/thoughtcrime/securesms/components/settings/app/notifications/NotificationsSettingsViewModel.kt b/app/src/main/java/org/thoughtcrime/securesms/components/settings/app/notifications/NotificationsSettingsViewModel.kt
index de58b874fc..37060b27dc 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/components/settings/app/notifications/NotificationsSettingsViewModel.kt
+++ b/app/src/main/java/org/thoughtcrime/securesms/components/settings/app/notifications/NotificationsSettingsViewModel.kt
@@ -5,9 +5,12 @@ import android.net.Uri
 import android.os.Build
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.ViewModelProvider
+import androidx.lifecycle.viewModelScope
+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.update
+import kotlinx.coroutines.launch
 import org.thoughtcrime.securesms.dependencies.AppDependencies
 import org.thoughtcrime.securesms.keyvalue.SignalStore
 import org.thoughtcrime.securesms.notifications.DeviceSpecificNotificationConfig
@@ -28,7 +31,11 @@ class NotificationsSettingsViewModel(private val sharedPreferences: SharedPrefer
       SignalStore.settings.isMessageVibrateEnabled = NotificationChannels.getInstance().messageVibrate
     }
 
-    store.update { getState(calculateSlowNotifications = true) }
+    // Calculating slow notification stuff isn't thread-safe, so we do it without to start off so we have most state populated, then fetch it in the background.
+    store.update { getState(calculateSlowNotifications = false) }
+    viewModelScope.launch(Dispatchers.IO) {
+      store.update { getState(calculateSlowNotifications = true) }
+    }
   }
 
   fun refresh() {