feat: foreground service for sending pending messages (WPB-26422)

app/proguard-rules.pro

@@ -71,7 +71,6 @@
 # WrapperWorkerFactory resolves inner workers by class name from input data.
 # Keep names stable so existing enqueued work remains resolvable after minification.
 # See docs/minification-workmanager-compat.md
--keepnames class com.wire.kalium.logic.sync.PendingMessagesSenderWorker
 -keepnames class com.wire.kalium.logic.sync.periodic.UserConfigSyncWorker
 -keepnames class com.wire.kalium.logic.sync.periodic.UpdateApiVersionsWorker
 -keepnames class com.wire.kalium.logic.sync.receiver.asset.AudioNormalizedLoudnessWorker

app/src/main/AndroidManifest.xml

@@ -39,6 +39,7 @@
     <uses-permission android:name="android.permission.VIBRATE" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_SPECIAL_USE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_DATA_SYNC" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MICROPHONE" />
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
@@ -349,6 +350,11 @@
             android:exported="false"
             android:foregroundServiceType="specialUse" />
 
+        <service
+            android:name=".services.PendingMessagesForegroundService"
+            android:exported="false"
+            android:foregroundServiceType="dataSync" />
+
         <service
             android:name=".services.CallService"
             android:exported="false"

app/src/main/baseline-prof.txt

@@ -30668,7 +30668,6 @@ Lcom/wire/kalium/logic/sync/GlobalWorkScheduler;
 Lcom/wire/kalium/logic/sync/GlobalWorkSchedulerImpl;
 SPLcom/wire/kalium/logic/sync/GlobalWorkSchedulerImpl;-><init>(Landroid/content/Context;Lcom/wire/kalium/logic/GlobalKaliumScope;)V
 SPLcom/wire/kalium/logic/sync/GlobalWorkSchedulerImpl;->schedulePeriodicApiVersionUpdate()V
-Lcom/wire/kalium/logic/sync/PendingMessagesSenderWorker;
 Lcom/wire/kalium/logic/sync/WorkSchedulerImplKt;
 SPLcom/wire/kalium/logic/sync/WorkSchedulerImplKt;-><clinit>()V
 SPLcom/wire/kalium/logic/sync/WorkSchedulerImplKt;->buildConnectedPeriodicWorkRequest$default(Lkotlin/reflect/KClass;Lcom/wire/kalium/logic/data/id/QualifiedID;ZILjava/lang/Object;)Landroidx/work/PeriodicWorkRequest;
@@ -40417,4 +40416,4 @@ SPLorg/slf4j/helpers/Util;-><clinit>()V
 SPLorg/slf4j/helpers/Util;->safeGetBooleanSystemProperty(Ljava/lang/String;)Z
 SPLorg/slf4j/helpers/Util;->safeGetSystemProperty(Ljava/lang/String;)Ljava/lang/String;
 Lorg/slf4j/spi/MDCAdapter;
-Lorg/slf4j/spi/SLF4JServiceProvider;
+Lorg/slf4j/spi/SLF4JServiceProvider;

app/src/main/kotlin/com/wire/android/GlobalObserversManager.kt

@@ -22,6 +22,7 @@ import com.wire.android.datastore.UserDataStoreProvider
 import com.wire.android.di.KaliumCoreLogic
 import com.wire.android.notification.NotificationChannelsManager
 import com.wire.android.notification.WireNotificationManager
+import com.wire.android.services.SendPendingMessagesAfterForegroundSyncUseCase
 import com.wire.android.util.CurrentScreenManager
 import com.wire.android.util.dispatchers.DispatcherProvider
 import com.wire.kalium.logic.CoreLogic
@@ -30,6 +31,8 @@ import com.wire.kalium.logic.data.user.UserId
 import com.wire.kalium.logic.feature.auth.LogoutCallback
 import com.wire.kalium.logic.feature.session.CurrentSessionResult
 import com.wire.kalium.logic.feature.user.webSocketStatus.ObservePersistentWebSocketConnectionStatusUseCase
+import com.wire.kalium.network.NetworkState
+import com.wire.kalium.network.NetworkStateObserver
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.SupervisorJob
 import kotlinx.coroutines.channels.awaitClose
@@ -61,6 +64,8 @@ class GlobalObserversManager @Inject constructor(
     private val notificationChannelsManager: NotificationChannelsManager,
     private val userDataStoreProvider: UserDataStoreProvider,
     private val currentScreenManager: CurrentScreenManager,
+    private val sendPendingMessagesAfterForegroundSync: SendPendingMessagesAfterForegroundSyncUseCase,
+    private val networkStateObserver: NetworkStateObserver,
 ) {
     // TODO(tests): refactor so scope/dispatcher can be injected and properly stopped
     private val scope = CoroutineScope(SupervisorJob() + dispatcherProvider.io())
@@ -78,6 +83,7 @@ class GlobalObserversManager @Inject constructor(
         }
         scope.handleLogouts()
         scope.handleDeleteEphemeralMessageEndDate()
+        scope.retryPendingMessagesOnAppOpen()
     }
 
     private suspend fun setUpNotifications() {
@@ -162,4 +168,36 @@ class GlobalObserversManager @Inject constructor(
                 .collect { userId -> coreLogic.getSessionScope(userId).messages.deleteEphemeralMessageEndDate() }
         }
     }
+
+    private fun CoroutineScope.retryPendingMessagesOnAppOpen() {
+        launch {
+            currentScreenManager.isAppVisibleFlow()
+                .filter { isAppVisible -> isAppVisible }
+                .collectLatest {
+                    val networkState = networkStateObserver.observeNetworkState().value
+                    if (networkState !is NetworkState.ConnectedWithInternet) {
+                        appLogger.i("$TAG: no internet connection, skipping pending messages retry on app open")
+                        return@collectLatest
+                    }
+
+                    when (val result = coreLogic.getGlobalScope().session.currentSession()) {
+                        is CurrentSessionResult.Success -> {
+                            val accountInfo = result.accountInfo
+                            if (accountInfo.isValid()) {
+                                sendPendingMessagesAfterForegroundSync(accountInfo.userId)
+                            } else {
+                                appLogger.w("$TAG: current session is invalid, skipping pending messages retry on app open")
+                            }
+                        }
+
+                        is CurrentSessionResult.Failure ->
+                            appLogger.w("$TAG: unable to get current valid session, skipping pending messages retry on app open: $result")
+                    }
+                }
+        }
+    }
+
+    private companion object {
+        private const val TAG = "GlobalObserversManager"
+    }
 }

app/src/main/kotlin/com/wire/android/di/metro/WireApplicationGraph.kt

@@ -54,6 +54,7 @@ import com.wire.android.notification.broadcastreceivers.PlayPauseAudioMessageRec
 import com.wire.android.notification.broadcastreceivers.StopAudioMessageReceiver
 import com.wire.android.search.SearchMetroViewModelBindings
 import com.wire.android.services.CallService
+import com.wire.android.services.PendingMessagesForegroundService
 import com.wire.android.services.PersistentWebSocketService
 import com.wire.android.services.PlayingAudioMessageService
 import com.wire.android.ui.AppLockActivity
@@ -125,6 +126,7 @@ interface WireApplicationGraph : ViewModelGraph {
     fun inject(activity: CallActivity)
     fun inject(activity: OngoingCallActivity)
     fun inject(service: PersistentWebSocketService)
+    fun inject(service: PendingMessagesForegroundService)
     fun inject(service: CallService)
     fun inject(service: PlayingAudioMessageService)
     fun inject(receiver: StartServiceReceiver)

app/src/main/kotlin/com/wire/android/notification/broadcastreceivers/DynamicReceiversManager.kt

@@ -20,10 +20,12 @@ package com.wire.android.notification.broadcastreceivers
 import android.content.Context
 import android.content.Intent
 import android.content.IntentFilter
+import androidx.core.content.ContextCompat
 import com.wire.android.BuildConfig.EMM_SUPPORT_ENABLED
 import com.wire.android.appLogger
 import com.wire.android.emm.ManagedConfigurationsReceiver
 import com.wire.android.di.ApplicationContext
+import com.wire.kalium.logic.sync.PendingMessagesForegroundSync
 import dev.zacsweers.metro.Inject
 import dev.zacsweers.metro.AppScope
 import dev.zacsweers.metro.SingleIn
@@ -35,35 +37,51 @@ import dev.zacsweers.metro.SingleIn
 @SingleIn(AppScope::class)
 class DynamicReceiversManager @Inject constructor(
     @ApplicationContext val context: Context,
-    private val managedConfigurationsReceiver: ManagedConfigurationsReceiver
+    private val managedConfigurationsReceiver: ManagedConfigurationsReceiver,
+    private val pendingMessagesScheduledReceiver: PendingMessagesScheduledReceiver,
 ) {
     @Volatile
     private var isRegistered = false
 
     fun registerAll() {
-        if (EMM_SUPPORT_ENABLED) {
-            synchronized(this) {
-                if (!isRegistered) {
+        synchronized(this) {
+            if (!isRegistered) {
+                if (EMM_SUPPORT_ENABLED) {
                     appLogger.i("$TAG Registering Runtime ManagedConfigurations Broadcast receiver")
                     context.registerReceiver(managedConfigurationsReceiver, IntentFilter(Intent.ACTION_APPLICATION_RESTRICTIONS_CHANGED))
-                    isRegistered = true
-                } else {
-                    appLogger.w("$TAG Receiver already registered, skipping")
                 }
+
+                appLogger.i("$TAG Registering PendingMessagesScheduledReceiver")
+                val pendingMessagesIntentFilter = IntentFilter(PendingMessagesForegroundSync.ACTION_SENDING_OF_PENDING_MESSAGES_SCHEDULED)
+                    .apply { addAction(PendingMessagesForegroundSync.ACTION_SENDING_OF_PENDING_MESSAGES_CANCELLED) }
+                ContextCompat.registerReceiver(
+                    context,
+                    pendingMessagesScheduledReceiver,
+                    pendingMessagesIntentFilter,
+                    ContextCompat.RECEIVER_NOT_EXPORTED
+                )
+
+                isRegistered = true
+            } else {
+                appLogger.w("$TAG Receiver already registered, skipping")
             }
         }
     }
 
     fun unregisterAll() {
-        if (EMM_SUPPORT_ENABLED) {
-            synchronized(this) {
-                if (isRegistered) {
+        synchronized(this) {
+            if (isRegistered) {
+                if (EMM_SUPPORT_ENABLED) {
                     appLogger.i("$TAG Unregistering Runtime ManagedConfigurations Broadcast receiver")
                     context.unregisterReceiver(managedConfigurationsReceiver)
-                    isRegistered = false
-                } else {
-                    appLogger.w("$TAG Receiver not registered, skipping unregister")
                 }
+
+                appLogger.i("$TAG Unregistering PendingMessagesScheduledReceiver")
+                context.unregisterReceiver(pendingMessagesScheduledReceiver)
+
+                isRegistered = false
+            } else {
+                appLogger.w("$TAG Receiver not registered, skipping unregister")
             }
         }
     }

app/src/main/kotlin/com/wire/android/notification/broadcastreceivers/PendingMessagesScheduledReceiver.kt

@@ -0,0 +1,54 @@
+/*
+ * Wire
+ * Copyright (C) 2026 Wire Swiss GmbH
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see http://www.gnu.org/licenses/.
+ */
+
+package com.wire.android.notification.broadcastreceivers
+
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import com.wire.android.appLogger
+import com.wire.android.services.ServicesManager
+import com.wire.kalium.logic.sync.PendingMessagesForegroundSync
+import dev.zacsweers.metro.AppScope
+import dev.zacsweers.metro.Inject
+import dev.zacsweers.metro.SingleIn
+
+@SingleIn(AppScope::class)
+class PendingMessagesScheduledReceiver @Inject constructor(
+    private val servicesManager: ServicesManager,
+) : BroadcastReceiver() {
+
+    override fun onReceive(context: Context, intent: Intent) {
+        when (intent.action) {
+            PendingMessagesForegroundSync.ACTION_SENDING_OF_PENDING_MESSAGES_SCHEDULED ->
+                servicesManager.startPendingMessagesForegroundService()
+
+            PendingMessagesForegroundSync.ACTION_SENDING_OF_PENDING_MESSAGES_CANCELLED ->
+                servicesManager.stopPendingMessagesForegroundService()
+
+            else -> {
+                appLogger.w("$TAG: unexpected action ${intent.action}")
+                return
+            }
+        }
+    }
+
+    companion object {
+        private const val TAG = "PendingMessagesScheduledReceiver"
+    }
+}