review changes

mobile/android/app/src/main/kotlin/app/alextran/immich/ImmichApp.kt

@@ -3,7 +3,6 @@ package app.alextran.immich
 import android.app.Application
 import androidx.work.Configuration
 import androidx.work.WorkManager
-import app.alextran.immich.background.BackgroundWorkerApiImpl
 
 class ImmichApp : Application() {
   override fun onCreate() {
@@ -17,6 +16,5 @@ class ImmichApp : Application() {
     // As a workaround, we also run a backup check when initializing the application
 
     ContentObserverWorker.startBackupWorker(context = this, delayMilliseconds = 0)
-    BackgroundWorkerApiImpl.enqueueBackgroundWorker(this)
   }
 }

mobile/android/app/src/main/kotlin/app/alextran/immich/ImmichPlugin.kt

@@ -0,0 +1,16 @@
+package app.alextran.immich
+
+import kotlinx.coroutines.CoroutineDispatcher
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+
+fun <T> dispatch(
+  dispatcher: CoroutineDispatcher = Dispatchers.IO,
+  callback: (Result<T>) -> Unit,
+  block: () -> T
+) {
+  CoroutineScope(dispatcher).launch {
+    callback(runCatching { block() })
+  }
+}

mobile/android/app/src/main/kotlin/app/alextran/immich/background/BackgroundEngineLock.kt

@@ -2,49 +2,50 @@ package app.alextran.immich.background
 
 import android.content.Context
 import android.util.Log
+import app.alextran.immich.dispatch
 import io.flutter.embedding.engine.plugins.FlutterPlugin
 import java.util.concurrent.atomic.AtomicInteger
 
 private const val TAG = "BackgroundEngineLock"
 
 class BackgroundEngineLock(context: Context) : BackgroundWorkerLockApi, FlutterPlugin {
-    private val ctx: Context = context.applicationContext
+  private val ctx: Context = context.applicationContext
 
-    companion object {
+  companion object {
 
-        private var engineCount = AtomicInteger(0)
+    private var engineCount = AtomicInteger(0)
 
-        private fun checkAndEnforceBackgroundLock(ctx: Context) {
-            // work manager task is running while the main app is opened, cancel the worker
-            if (BackgroundWorkerPreferences(ctx).isLocked() &&
-                engineCount.get() > 1 &&
-                BackgroundWorkerApiImpl.isBackgroundWorkerRunning()
-            ) {
-                Log.i(TAG, "Background worker is locked, cancelling the background worker")
-                BackgroundWorkerApiImpl.cancelBackgroundWorker(ctx)
-            }
-        }
+    private fun checkAndEnforceBackgroundLock(ctx: Context) {
+      // work manager task is running while the main app is opened, cancel the worker
+      if (BackgroundWorkerPreferences(ctx).isLocked() &&
+        engineCount.get() > 1 &&
+        BackgroundWorkerApiImpl.isBackgroundWorkerRunning()
+      ) {
+        Log.i(TAG, "Background worker is locked, cancelling the background worker")
+        BackgroundWorkerApiImpl.cancelBackgroundWorker(ctx)
+      }
     }
+  }
 
-    override fun lock() {
-        BackgroundWorkerPreferences(ctx).setLocked(true)
-        checkAndEnforceBackgroundLock(ctx)
-        Log.i(TAG, "Background worker is locked")
-    }
+  override fun lock(callback: (Result<Unit>) -> Unit) = dispatch(callback = callback) {
+    BackgroundWorkerPreferences(ctx).setLocked(true)
+    checkAndEnforceBackgroundLock(ctx)
+    Log.i(TAG, "Background worker is locked")
+  }
 
-    override fun unlock() {
-        BackgroundWorkerPreferences(ctx).setLocked(false)
-        Log.i(TAG, "Background worker is unlocked")
-    }
+  override fun unlock(callback: (Result<Unit>) -> Unit) = dispatch(callback = callback) {
+    BackgroundWorkerPreferences(ctx).setLocked(false)
+    Log.i(TAG, "Background worker is unlocked")
+  }
 
-    override fun onAttachedToEngine(binding: FlutterPlugin.FlutterPluginBinding) {
-        checkAndEnforceBackgroundLock(binding.applicationContext)
-        engineCount.incrementAndGet()
-        Log.i(TAG, "Flutter engine attached. Attached Engines count: $engineCount")
-    }
+  override fun onAttachedToEngine(binding: FlutterPlugin.FlutterPluginBinding) {
+    checkAndEnforceBackgroundLock(binding.applicationContext)
+    engineCount.incrementAndGet()
+    Log.i(TAG, "Flutter engine attached. Attached Engines count: $engineCount")
+  }
 
-    override fun onDetachedFromEngine(binding: FlutterPlugin.FlutterPluginBinding) {
-        engineCount.decrementAndGet()
-        Log.i(TAG, "Flutter engine detached. Attached Engines count: $engineCount")
-    }
+  override fun onDetachedFromEngine(binding: FlutterPlugin.FlutterPluginBinding) {
+    engineCount.decrementAndGet()
+    Log.i(TAG, "Flutter engine detached. Attached Engines count: $engineCount")
+  }
 }

mobile/android/app/src/main/kotlin/app/alextran/immich/background/BackgroundWorker.g.kt

@@ -133,11 +133,12 @@ private open class BackgroundWorkerPigeonCodec : StandardMessageCodec() {
   }
 }
 
+
 /** Generated interface from Pigeon that represents a handler of messages from Flutter. */
 interface BackgroundWorkerFgHostApi {
-  fun enable()
-  fun configure(settings: BackgroundWorkerSettings)
-  fun disable()
+  fun enable(callback: (Result<Unit>) -> Unit)
+  fun configure(settings: BackgroundWorkerSettings, callback: (Result<Unit>) -> Unit)
+  fun disable(callback: (Result<Unit>) -> Unit)
 
   companion object {
     /** The codec used by BackgroundWorkerFgHostApi. */
@@ -152,13 +153,14 @@ interface BackgroundWorkerFgHostApi {
         val channel = BasicMessageChannel<Any?>(binaryMessenger, "dev.flutter.pigeon.immich_mobile.BackgroundWorkerFgHostApi.enable$separatedMessageChannelSuffix", codec)
         if (api != null) {
           channel.setMessageHandler { _, reply ->
-            val wrapped: List<Any?> = try {
-              api.enable()
-              listOf(null)
-            } catch (exception: Throwable) {
-              BackgroundWorkerPigeonUtils.wrapError(exception)
+            api.enable{ result: Result<Unit> ->
+              val error = result.exceptionOrNull()
+              if (error != null) {
+                reply.reply(BackgroundWorkerPigeonUtils.wrapError(error))
+              } else {
+                reply.reply(BackgroundWorkerPigeonUtils.wrapResult(null))
+              }
             }
-            reply.reply(wrapped)
           }
         } else {
           channel.setMessageHandler(null)
@@ -170,13 +172,14 @@ interface BackgroundWorkerFgHostApi {
           channel.setMessageHandler { message, reply ->
             val args = message as List<Any?>
             val settingsArg = args[0] as BackgroundWorkerSettings
-            val wrapped: List<Any?> = try {
-              api.configure(settingsArg)
-              listOf(null)
-            } catch (exception: Throwable) {
-              BackgroundWorkerPigeonUtils.wrapError(exception)
+            api.configure(settingsArg) { result: Result<Unit> ->
+              val error = result.exceptionOrNull()
+              if (error != null) {
+                reply.reply(BackgroundWorkerPigeonUtils.wrapError(error))
+              } else {
+                reply.reply(BackgroundWorkerPigeonUtils.wrapResult(null))
+              }
             }
-            reply.reply(wrapped)
           }
         } else {
           channel.setMessageHandler(null)
@@ -186,13 +189,14 @@ interface BackgroundWorkerFgHostApi {
         val channel = BasicMessageChannel<Any?>(binaryMessenger, "dev.flutter.pigeon.immich_mobile.BackgroundWorkerFgHostApi.disable$separatedMessageChannelSuffix", codec)
         if (api != null) {
           channel.setMessageHandler { _, reply ->
-            val wrapped: List<Any?> = try {
-              api.disable()
-              listOf(null)
-            } catch (exception: Throwable) {
-              BackgroundWorkerPigeonUtils.wrapError(exception)
+            api.disable{ result: Result<Unit> ->
+              val error = result.exceptionOrNull()
+              if (error != null) {
+                reply.reply(BackgroundWorkerPigeonUtils.wrapError(error))
+              } else {
+                reply.reply(BackgroundWorkerPigeonUtils.wrapResult(null))
+              }
             }
-            reply.reply(wrapped)
           }
         } else {
           channel.setMessageHandler(null)

mobile/android/app/src/main/kotlin/app/alextran/immich/background/BackgroundWorker.kt

@@ -215,7 +215,7 @@ class BackgroundWorker(context: Context, params: WorkerParameters) :
     if (foregroundFuture != null && !foregroundFuture.isCancelled && !foregroundFuture.isDone) {
       try {
         foregroundFuture.get(500, TimeUnit.MILLISECONDS)
-      } catch (e: Exception) {
+      } catch (_: Exception) {
         // ignored, there is nothing to be done
       }
     }

mobile/android/app/src/main/kotlin/app/alextran/immich/background/BackgroundWorkerApiImpl.kt

@@ -8,6 +8,7 @@ import androidx.work.Constraints
 import androidx.work.ExistingWorkPolicy
 import androidx.work.OneTimeWorkRequest
 import androidx.work.WorkManager
+import app.alextran.immich.dispatch
 import io.flutter.embedding.engine.FlutterEngineCache
 import java.util.concurrent.TimeUnit
 
@@ -16,16 +17,18 @@ private const val TAG = "BackgroundWorkerApiImpl"
 class BackgroundWorkerApiImpl(context: Context) : BackgroundWorkerFgHostApi {
   private val ctx: Context = context.applicationContext
 
-  override fun enable() {
-    enqueueMediaObserver(ctx)
-  }
+  override fun enable(callback: (Result<Unit>) -> Unit) =
+    dispatch(callback = callback) { enqueueMediaObserver(ctx) }
 
-  override fun configure(settings: BackgroundWorkerSettings) {
+  override fun configure(
+    settings: BackgroundWorkerSettings,
+    callback: (Result<Unit>) -> Unit
+  ) = dispatch(callback = callback) {
     BackgroundWorkerPreferences(ctx).updateSettings(settings)
     enqueueMediaObserver(ctx)
   }
 
-  override fun disable() {
+  override fun disable(callback: (Result<Unit>) -> Unit) = dispatch(callback = callback) {
     WorkManager.getInstance(ctx).apply {
       cancelUniqueWork(OBSERVER_WORKER_NAME)
       cancelUniqueWork(BACKGROUND_WORKER_NAME)
@@ -38,7 +41,6 @@ class BackgroundWorkerApiImpl(context: Context) : BackgroundWorkerFgHostApi {
     private const val OBSERVER_WORKER_NAME = "immich/MediaObserverV1"
     const val ENGINE_CACHE_KEY = "immich::background_worker::engine"
 
-
     fun enqueueMediaObserver(ctx: Context) {
       val settings = BackgroundWorkerPreferences(ctx).getSettings()
       val constraints = Constraints.Builder().apply {

mobile/android/app/src/main/kotlin/app/alextran/immich/background/BackgroundWorkerLock.g.kt

@@ -44,10 +44,11 @@ private open class BackgroundWorkerLockPigeonCodec : StandardMessageCodec() {
   }
 }
 
+
 /** Generated interface from Pigeon that represents a handler of messages from Flutter. */
 interface BackgroundWorkerLockApi {
-  fun lock()
-  fun unlock()
+  fun lock(callback: (Result<Unit>) -> Unit)
+  fun unlock(callback: (Result<Unit>) -> Unit)
 
   companion object {
     /** The codec used by BackgroundWorkerLockApi. */
@@ -62,13 +63,14 @@ interface BackgroundWorkerLockApi {
         val channel = BasicMessageChannel<Any?>(binaryMessenger, "dev.flutter.pigeon.immich_mobile.BackgroundWorkerLockApi.lock$separatedMessageChannelSuffix", codec)
         if (api != null) {
           channel.setMessageHandler { _, reply ->
-            val wrapped: List<Any?> = try {
-              api.lock()
-              listOf(null)
-            } catch (exception: Throwable) {
-              BackgroundWorkerLockPigeonUtils.wrapError(exception)
+            api.lock{ result: Result<Unit> ->
+              val error = result.exceptionOrNull()
+              if (error != null) {
+                reply.reply(BackgroundWorkerLockPigeonUtils.wrapError(error))
+              } else {
+                reply.reply(BackgroundWorkerLockPigeonUtils.wrapResult(null))
+              }
             }
-            reply.reply(wrapped)
           }
         } else {
           channel.setMessageHandler(null)
@@ -78,13 +80,14 @@ interface BackgroundWorkerLockApi {
         val channel = BasicMessageChannel<Any?>(binaryMessenger, "dev.flutter.pigeon.immich_mobile.BackgroundWorkerLockApi.unlock$separatedMessageChannelSuffix", codec)
         if (api != null) {
           channel.setMessageHandler { _, reply ->
-            val wrapped: List<Any?> = try {
-              api.unlock()
-              listOf(null)
-            } catch (exception: Throwable) {
-              BackgroundWorkerLockPigeonUtils.wrapError(exception)
+            api.unlock{ result: Result<Unit> ->
+              val error = result.exceptionOrNull()
+              if (error != null) {
+                reply.reply(BackgroundWorkerLockPigeonUtils.wrapError(error))
+              } else {
+                reply.reply(BackgroundWorkerLockPigeonUtils.wrapResult(null))
+              }
             }
-            reply.reply(wrapped)
           }
         } else {
           channel.setMessageHandler(null)

mobile/android/app/src/main/kotlin/app/alextran/immich/connectivity/Connectivity.g.kt

@@ -82,9 +82,10 @@ private open class ConnectivityPigeonCodec : StandardMessageCodec() {
   }
 }
 
+
 /** Generated interface from Pigeon that represents a handler of messages from Flutter. */
 interface ConnectivityApi {
-  fun getCapabilities(): List<NetworkCapability>
+  fun getCapabilities(callback: (Result<List<NetworkCapability>>) -> Unit)
 
   companion object {
     /** The codec used by ConnectivityApi. */
@@ -100,12 +101,15 @@ interface ConnectivityApi {
         val channel = BasicMessageChannel<Any?>(binaryMessenger, "dev.flutter.pigeon.immich_mobile.ConnectivityApi.getCapabilities$separatedMessageChannelSuffix", codec, taskQueue)
         if (api != null) {
           channel.setMessageHandler { _, reply ->
-            val wrapped: List<Any?> = try {
-              listOf(api.getCapabilities())
-            } catch (exception: Throwable) {
-              ConnectivityPigeonUtils.wrapError(exception)
+            api.getCapabilities{ result: Result<List<NetworkCapability>> ->
+              val error = result.exceptionOrNull()
+              if (error != null) {
+                reply.reply(ConnectivityPigeonUtils.wrapError(error))
+              } else {
+                val data = result.getOrNull()
+                reply.reply(ConnectivityPigeonUtils.wrapResult(data))
+              }
             }
-            reply.reply(wrapped)
           }
         } else {
           channel.setMessageHandler(null)

mobile/android/app/src/main/kotlin/app/alextran/immich/connectivity/ConnectivityApiImpl.kt

@@ -4,6 +4,7 @@ import android.content.Context
 import android.net.ConnectivityManager
 import android.net.NetworkCapabilities
 import android.net.wifi.WifiManager
+import app.alextran.immich.dispatch
 
 class ConnectivityApiImpl(context: Context) : ConnectivityApi {
   private val connectivityManager =
@@ -11,7 +12,13 @@ class ConnectivityApiImpl(context: Context) : ConnectivityApi {
   private val wifiManager =
     context.applicationContext.getSystemService(Context.WIFI_SERVICE) as WifiManager
 
-  override fun getCapabilities(): List<NetworkCapability> {
+
+  override fun getCapabilities(callback: (Result<List<NetworkCapability>>) -> Unit) =
+    dispatch(callback = callback) {
+      getCapabilities()
+    }
+
+  private fun getCapabilities(): List<NetworkCapability> {
     val capabilities = connectivityManager.getNetworkCapabilities(connectivityManager.activeNetwork)
       ?: return emptyList()
 

mobile/android/app/src/main/kotlin/app/alextran/immich/sync/Messages.g.kt

@@ -296,13 +296,13 @@ private open class MessagesPigeonCodec : StandardMessageCodec() {
 /** Generated interface from Pigeon that represents a handler of messages from Flutter. */
 interface NativeSyncApi {
   fun shouldFullSync(): Boolean
-  fun getMediaChanges(): SyncDelta
+  fun getMediaChanges(callback: (Result<SyncDelta>) -> Unit)
   fun checkpointSync()
   fun clearSyncCheckpoint()
-  fun getAssetIdsForAlbum(albumId: String): List<String>
-  fun getAlbums(): List<PlatformAlbum>
-  fun getAssetsCountSince(albumId: String, timestamp: Long): Long
-  fun getAssetsForAlbum(albumId: String, updatedTimeCond: Long?): List<PlatformAsset>
+  fun getAssetIdsForAlbum(albumId: String, callback: (Result<List<String>>) -> Unit)
+  fun getAlbums(callback: (Result<List<PlatformAlbum>>) -> Unit)
+  fun getAssetsCountSince(albumId: String, timestamp: Long, callback: (Result<Long>) -> Unit)
+  fun getAssetsForAlbum(albumId: String, updatedTimeCond: Long?, callback: (Result<List<PlatformAsset>>) -> Unit)
   fun hashAssets(assetIds: List<String>, allowNetworkAccess: Boolean, callback: (Result<List<HashResult>>) -> Unit)
   fun cancelHashing()
 
@@ -335,12 +335,15 @@ interface NativeSyncApi {
         val channel = BasicMessageChannel<Any?>(binaryMessenger, "dev.flutter.pigeon.immich_mobile.NativeSyncApi.getMediaChanges$separatedMessageChannelSuffix", codec, taskQueue)
         if (api != null) {
           channel.setMessageHandler { _, reply ->
-            val wrapped: List<Any?> = try {
-              listOf(api.getMediaChanges())
-            } catch (exception: Throwable) {
-              MessagesPigeonUtils.wrapError(exception)
+            api.getMediaChanges{ result: Result<SyncDelta> ->
+              val error = result.exceptionOrNull()
+              if (error != null) {
+                reply.reply(MessagesPigeonUtils.wrapError(error))
+              } else {
+                val data = result.getOrNull()
+                reply.reply(MessagesPigeonUtils.wrapResult(data))
+              }
             }
-            reply.reply(wrapped)
           }
         } else {
           channel.setMessageHandler(null)
@@ -384,12 +387,15 @@ interface NativeSyncApi {
           channel.setMessageHandler { message, reply ->
             val args = message as List<Any?>
             val albumIdArg = args[0] as String
-            val wrapped: List<Any?> = try {
-              listOf(api.getAssetIdsForAlbum(albumIdArg))
-            } catch (exception: Throwable) {
-              MessagesPigeonUtils.wrapError(exception)
+            api.getAssetIdsForAlbum(albumIdArg) { result: Result<List<String>> ->
+              val error = result.exceptionOrNull()
+              if (error != null) {
+                reply.reply(MessagesPigeonUtils.wrapError(error))
+              } else {
+                val data = result.getOrNull()
+                reply.reply(MessagesPigeonUtils.wrapResult(data))
+              }
             }
-            reply.reply(wrapped)
           }
         } else {
           channel.setMessageHandler(null)
@@ -399,12 +405,15 @@ interface NativeSyncApi {
         val channel = BasicMessageChannel<Any?>(binaryMessenger, "dev.flutter.pigeon.immich_mobile.NativeSyncApi.getAlbums$separatedMessageChannelSuffix", codec, taskQueue)
         if (api != null) {
           channel.setMessageHandler { _, reply ->
-            val wrapped: List<Any?> = try {
-              listOf(api.getAlbums())
-            } catch (exception: Throwable) {
-              MessagesPigeonUtils.wrapError(exception)
+            api.getAlbums{ result: Result<List<PlatformAlbum>> ->
+              val error = result.exceptionOrNull()
+              if (error != null) {
+                reply.reply(MessagesPigeonUtils.wrapError(error))
+              } else {
+                val data = result.getOrNull()
+                reply.reply(MessagesPigeonUtils.wrapResult(data))
+              }
             }
-            reply.reply(wrapped)
           }
         } else {
           channel.setMessageHandler(null)
@@ -417,12 +426,15 @@ interface NativeSyncApi {
             val args = message as List<Any?>
             val albumIdArg = args[0] as String
             val timestampArg = args[1] as Long
-            val wrapped: List<Any?> = try {
-              listOf(api.getAssetsCountSince(albumIdArg, timestampArg))
-            } catch (exception: Throwable) {
-              MessagesPigeonUtils.wrapError(exception)
+            api.getAssetsCountSince(albumIdArg, timestampArg) { result: Result<Long> ->
+              val error = result.exceptionOrNull()
+              if (error != null) {
+                reply.reply(MessagesPigeonUtils.wrapError(error))
+              } else {
+                val data = result.getOrNull()
+                reply.reply(MessagesPigeonUtils.wrapResult(data))
+              }
             }
-            reply.reply(wrapped)
           }
         } else {
           channel.setMessageHandler(null)
@@ -435,12 +447,15 @@ interface NativeSyncApi {
             val args = message as List<Any?>
             val albumIdArg = args[0] as String
             val updatedTimeCondArg = args[1] as Long?
-            val wrapped: List<Any?> = try {
-              listOf(api.getAssetsForAlbum(albumIdArg, updatedTimeCondArg))
-            } catch (exception: Throwable) {
-              MessagesPigeonUtils.wrapError(exception)
+            api.getAssetsForAlbum(albumIdArg, updatedTimeCondArg) { result: Result<List<PlatformAsset>> ->
+              val error = result.exceptionOrNull()
+              if (error != null) {
+                reply.reply(MessagesPigeonUtils.wrapError(error))
+              } else {
+                val data = result.getOrNull()
+                reply.reply(MessagesPigeonUtils.wrapResult(data))
+              }
             }
-            reply.reply(wrapped)
           }
         } else {
           channel.setMessageHandler(null)

mobile/android/app/src/main/kotlin/app/alextran/immich/sync/MessagesImpl26.kt

@@ -18,7 +18,7 @@ class NativeSyncApiImpl26(context: Context) : NativeSyncApiImplBase(context), Na
     // No-op for Android 10 and below
   }
 
-  override fun getMediaChanges(): SyncDelta {
-    throw IllegalStateException("Method not supported on this Android version.")
-  }
+  override fun getMediaChanges(callback: (Result<SyncDelta>) -> Unit) =
+    callback(Result.failure(IllegalStateException("Method not supported on this Android version.")))
+
 }

mobile/android/app/src/main/kotlin/app/alextran/immich/sync/MessagesImpl30.kt

@@ -5,6 +5,7 @@ import android.os.Build
 import android.provider.MediaStore
 import androidx.annotation.RequiresApi
 import androidx.annotation.RequiresExtension
+import app.alextran.immich.dispatch
 import kotlinx.serialization.json.Json
 
 @RequiresApi(Build.VERSION_CODES.Q)
@@ -47,7 +48,12 @@ class NativeSyncApiImpl30(context: Context) : NativeSyncApiImplBase(context), Na
     }
   }
 
-  override fun getMediaChanges(): SyncDelta {
+  override fun getMediaChanges(callback: (Result<SyncDelta>) -> Unit) =
+    dispatch(callback = callback) {
+      getMediaChanges()
+    }
+
+  private fun getMediaChanges(): SyncDelta {
     val genMap = getSavedGenerationMap()
     val currentVolumes = MediaStore.getExternalVolumeNames(ctx)
     val changed = mutableListOf<PlatformAsset>()

mobile/android/app/src/main/kotlin/app/alextran/immich/sync/MessagesImplBase.kt

@@ -7,6 +7,7 @@ import android.database.Cursor
 import android.provider.MediaStore
 import android.util.Base64
 import androidx.core.database.getStringOrNull
+import app.alextran.immich.dispatch
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
@@ -145,7 +146,10 @@ open class NativeSyncApiImplBase(context: Context) {
     }
   }
 
-  fun getAlbums(): List<PlatformAlbum> {
+  fun getAlbums(callback: (Result<List<PlatformAlbum>>) -> Unit) =
+    dispatch(callback = callback) { getAlbums() }
+
+  private fun getAlbums(): List<PlatformAlbum> {
     val albums = mutableListOf<PlatformAlbum>()
     val albumsCount = mutableMapOf<String, Int>()
 
@@ -192,7 +196,10 @@ open class NativeSyncApiImplBase(context: Context) {
       .sortedBy { it.id }
   }
 
-  fun getAssetIdsForAlbum(albumId: String): List<String> {
+  fun getAssetIdsForAlbum(albumId: String, callback: (Result<List<String>>) -> Unit) =
+    dispatch(callback = callback) { getAssetIdsForAlbum(albumId); }
+
+  private fun getAssetIdsForAlbum(albumId: String): List<String> {
     val projection = arrayOf(MediaStore.MediaColumns._ID)
 
     return getCursor(
@@ -208,15 +215,23 @@ open class NativeSyncApiImplBase(context: Context) {
     } ?: emptyList()
   }
 
-  fun getAssetsCountSince(albumId: String, timestamp: Long): Long =
+  fun getAssetsCountSince(albumId: String, timestamp: Long, callback: (Result<Long>) -> Unit) =
+    dispatch(callback = callback) { getAssetsCountSince(albumId, timestamp) }
+
+  private fun getAssetsCountSince(albumId: String, timestamp: Long): Long =
     getCursor(
       MediaStore.VOLUME_EXTERNAL,
       "$BUCKET_SELECTION AND ${MediaStore.Files.FileColumns.DATE_ADDED} > ? AND $MEDIA_SELECTION",
       arrayOf(albumId, timestamp.toString(), *MEDIA_SELECTION_ARGS),
     )?.use { cursor -> cursor.count.toLong() } ?: 0L
 
+  fun getAssetsForAlbum(
+    albumId: String,
+    updatedTimeCond: Long?,
+    callback: (Result<List<PlatformAsset>>) -> Unit
+  ) = dispatch(callback = callback) { getAssetsForAlbum(albumId, updatedTimeCond) }
 
-  fun getAssetsForAlbum(albumId: String, updatedTimeCond: Long?): List<PlatformAsset> {
+  private fun getAssetsForAlbum(albumId: String, updatedTimeCond: Long?): List<PlatformAsset> {
     var selection = "$BUCKET_SELECTION AND $MEDIA_SELECTION"
     val selectionArgs = mutableListOf(albumId, *MEDIA_SELECTION_ARGS)
 
@@ -254,7 +269,7 @@ open class NativeSyncApiImplBase(context: Context) {
         }.awaitAll()
 
         callback(Result.success(results))
-      } catch (e: CancellationException) {
+      } catch (_: CancellationException) {
         callback(
           Result.failure(
             FlutterError(

mobile/ios/Runner.xcodeproj/project.pbxproj

@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 54;
+	objectVersion = 77;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -133,11 +133,14 @@
 /* Begin PBXFileSystemSynchronizedRootGroup section */
 		B2CF7F8C2DDE4EBB00744BF6 /* Sync */ = {
 			isa = PBXFileSystemSynchronizedRootGroup;
-			exceptions = (
-			);
 			path = Sync;
 			sourceTree = "<group>";
 		};
+		B2D27ABE2E84A0FF004DD55B /* Core */ = {
+			isa = PBXFileSystemSynchronizedRootGroup;
+			path = Core;
+			sourceTree = "<group>";
+		};
 		F0B57D3D2DF764BD00DC5BCC /* WidgetExtension */ = {
 			isa = PBXFileSystemSynchronizedRootGroup;
 			exceptions = (
@@ -247,6 +250,7 @@
 		97C146F01CF9000F007C117D /* Runner */ = {
 			isa = PBXGroup;
 			children = (
+				B2D27ABE2E84A0FF004DD55B /* Core */,
 				B25D37792E72CA15008B6CA7 /* Connectivity */,
 				B21E34A62E5AF9760031FDB9 /* Background */,
 				B2CF7F8C2DDE4EBB00744BF6 /* Sync */,
@@ -332,6 +336,7 @@
 			);
 			fileSystemSynchronizedGroups = (
 				B2CF7F8C2DDE4EBB00744BF6 /* Sync */,
+				B2D27ABE2E84A0FF004DD55B /* Core */,
 			);
 			name = Runner;
 			productName = Runner;
@@ -521,10 +526,14 @@
 			inputFileListPaths = (
 				"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-resources-${CONFIGURATION}-input-files.xcfilelist",
 			);
+			inputPaths = (
+			);
 			name = "[CP] Copy Pods Resources";
 			outputFileListPaths = (
 				"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-resources-${CONFIGURATION}-output-files.xcfilelist",
 			);
+			outputPaths = (
+			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
 			shellScript = "\"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-resources.sh\"\n";
@@ -553,10 +562,14 @@
 			inputFileListPaths = (
 				"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-frameworks-${CONFIGURATION}-input-files.xcfilelist",
 			);
+			inputPaths = (
+			);
 			name = "[CP] Embed Pods Frameworks";
 			outputFileListPaths = (
 				"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-frameworks-${CONFIGURATION}-output-files.xcfilelist",
 			);
+			outputPaths = (
+			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
 			shellScript = "\"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-frameworks.sh\"\n";

mobile/ios/Runner/Background/BackgroundWorker.g.swift

@@ -179,11 +179,12 @@ class BackgroundWorkerPigeonCodec: FlutterStandardMessageCodec, @unchecked Senda
   static let shared = BackgroundWorkerPigeonCodec(readerWriter: BackgroundWorkerPigeonCodecReaderWriter())
 }
 
+
 /// Generated protocol from Pigeon that represents a handler of messages from Flutter.
 protocol BackgroundWorkerFgHostApi {
-  func enable() throws
-  func configure(settings: BackgroundWorkerSettings) throws
-  func disable() throws
+  func enable(completion: @escaping (Result<Void, Error>) -> Void)
+  func configure(settings: BackgroundWorkerSettings, completion: @escaping (Result<Void, Error>) -> Void)
+  func disable(completion: @escaping (Result<Void, Error>) -> Void)
 }
 
 /// Generated setup class from Pigeon to handle messages through the `binaryMessenger`.
@@ -195,11 +196,13 @@ class BackgroundWorkerFgHostApiSetup {
     let enableChannel = FlutterBasicMessageChannel(name: "dev.flutter.pigeon.immich_mobile.BackgroundWorkerFgHostApi.enable\(channelSuffix)", binaryMessenger: binaryMessenger, codec: codec)
     if let api = api {
       enableChannel.setMessageHandler { _, reply in
-        do {
-          try api.enable()
-          reply(wrapResult(nil))
-        } catch {
-          reply(wrapError(error))
+        api.enable { result in
+          switch result {
+          case .success:
+            reply(wrapResult(nil))
+          case .failure(let error):
+            reply(wrapError(error))
+          }
         }
       }
     } else {
@@ -210,11 +213,13 @@ class BackgroundWorkerFgHostApiSetup {
       configureChannel.setMessageHandler { message, reply in
         let args = message as! [Any?]
         let settingsArg = args[0] as! BackgroundWorkerSettings
-        do {
-          try api.configure(settings: settingsArg)
-          reply(wrapResult(nil))
-        } catch {
-          reply(wrapError(error))
+        api.configure(settings: settingsArg) { result in
+          switch result {
+          case .success:
+            reply(wrapResult(nil))
+          case .failure(let error):
+            reply(wrapError(error))
+          }
         }
       }
     } else {
@@ -223,11 +228,13 @@ class BackgroundWorkerFgHostApiSetup {
     let disableChannel = FlutterBasicMessageChannel(name: "dev.flutter.pigeon.immich_mobile.BackgroundWorkerFgHostApi.disable\(channelSuffix)", binaryMessenger: binaryMessenger, codec: codec)
     if let api = api {
       disableChannel.setMessageHandler { _, reply in
-        do {
-          try api.disable()
-          reply(wrapResult(nil))
-        } catch {
-          reply(wrapError(error))
+        api.disable { result in
+          switch result {
+          case .success:
+            reply(wrapResult(nil))
+          case .failure(let error):
+            reply(wrapError(error))
+          }
         }
       }
     } else {

mobile/ios/Runner/Background/BackgroundWorkerApiImpl.swift

@@ -1,23 +1,27 @@
 import BackgroundTasks
 
 class BackgroundWorkerApiImpl: BackgroundWorkerFgHostApi {
-
-  func enable() throws {
-    BackgroundWorkerApiImpl.scheduleRefreshWorker()
-    BackgroundWorkerApiImpl.scheduleProcessingWorker()
-    print("BackgroundWorkerApiImpl:enable Background worker scheduled")
+  func enable(completion: @escaping (Result<Void, any Error>) -> Void) {
+    dispatch(completion: completion) {
+      BackgroundWorkerApiImpl.scheduleRefreshWorker()
+      BackgroundWorkerApiImpl.scheduleProcessingWorker()
+      print("BackgroundWorkerApiImpl:enable Background worker scheduled")
+    }
   }
   
-  func configure(settings: BackgroundWorkerSettings) throws {
+  func configure(settings: BackgroundWorkerSettings, completion: @escaping (Result<Void, any Error>) -> Void) {
     // Android only
+    completion(Result.success(Void()))
   }
   
-  func disable() throws {
-    BGTaskScheduler.shared.cancel(taskRequestWithIdentifier: BackgroundWorkerApiImpl.refreshTaskID);
-    BGTaskScheduler.shared.cancel(taskRequestWithIdentifier: BackgroundWorkerApiImpl.processingTaskID);
-    print("BackgroundWorkerApiImpl:disableUploadWorker Disabled background workers")
+  func disable(completion: @escaping (Result<Void, any Error>) -> Void) {
+    dispatch(completion: completion) {
+      BGTaskScheduler.shared.cancel(taskRequestWithIdentifier: BackgroundWorkerApiImpl.refreshTaskID);
+      BGTaskScheduler.shared.cancel(taskRequestWithIdentifier: BackgroundWorkerApiImpl.processingTaskID);
+      print("BackgroundWorkerApiImpl:disableUploadWorker Disabled background workers")
+    }
   }
-  
+
   private static let refreshTaskID = "app.alextran.immich.background.refreshUpload"
   private static let processingTaskID = "app.alextran.immich.background.processingUpload"
   private static let taskSemaphore = DispatchSemaphore(value: 1)

mobile/ios/Runner/Connectivity/Connectivity.g.swift

@@ -94,9 +94,10 @@ class ConnectivityPigeonCodec: FlutterStandardMessageCodec, @unchecked Sendable
   static let shared = ConnectivityPigeonCodec(readerWriter: ConnectivityPigeonCodecReaderWriter())
 }
 
+
 /// Generated protocol from Pigeon that represents a handler of messages from Flutter.
 protocol ConnectivityApi {
-  func getCapabilities() throws -> [NetworkCapability]
+  func getCapabilities(completion: @escaping (Result<[NetworkCapability], Error>) -> Void)
 }
 
 /// Generated setup class from Pigeon to handle messages through the `binaryMessenger`.
@@ -115,11 +116,13 @@ class ConnectivityApiSetup {
       : FlutterBasicMessageChannel(name: "dev.flutter.pigeon.immich_mobile.ConnectivityApi.getCapabilities\(channelSuffix)", binaryMessenger: binaryMessenger, codec: codec, taskQueue: taskQueue)
     if let api = api {
       getCapabilitiesChannel.setMessageHandler { _, reply in
-        do {
-          let result = try api.getCapabilities()
-          reply(wrapResult(result))
-        } catch {
-          reply(wrapError(error))
+        api.getCapabilities { result in
+          switch result {
+          case .success(let res):
+            reply(wrapResult(res))
+          case .failure(let error):
+            reply(wrapError(error))
+          }
         }
       }
     } else {

mobile/ios/Runner/Connectivity/ConnectivityApiImpl.swift

@@ -1,6 +1,6 @@
 
 class ConnectivityApiImpl: ConnectivityApi {
-  func getCapabilities() throws -> [NetworkCapability] {
-    []
+  func getCapabilities(completion: @escaping (Result<[NetworkCapability], any Error>) -> Void) {
+    completion(Result.success([]))
   }
 }

mobile/ios/Runner/Core/ImmichPlugin.swift

@@ -0,0 +1,9 @@
+func dispatch<T>(
+  qos: DispatchQoS.QoSClass = .default,
+    completion: @escaping (Result<T, Error>) -> Void,
+    block: @escaping () throws -> T
+) {
+  DispatchQueue.global(qos: qos).async {
+    completion(Result { try block() })
+  }
+}

mobile/ios/Runner/Sync/Messages.g.swift

@@ -355,13 +355,13 @@ class MessagesPigeonCodec: FlutterStandardMessageCodec, @unchecked Sendable {
 /// Generated protocol from Pigeon that represents a handler of messages from Flutter.
 protocol NativeSyncApi {
   func shouldFullSync() throws -> Bool
-  func getMediaChanges() throws -> SyncDelta
+  func getMediaChanges(completion: @escaping (Result<SyncDelta, Error>) -> Void)
   func checkpointSync() throws
   func clearSyncCheckpoint() throws
-  func getAssetIdsForAlbum(albumId: String) throws -> [String]
-  func getAlbums() throws -> [PlatformAlbum]
-  func getAssetsCountSince(albumId: String, timestamp: Int64) throws -> Int64
-  func getAssetsForAlbum(albumId: String, updatedTimeCond: Int64?) throws -> [PlatformAsset]
+  func getAssetIdsForAlbum(albumId: String, completion: @escaping (Result<[String], Error>) -> Void)
+  func getAlbums(completion: @escaping (Result<[PlatformAlbum], Error>) -> Void)
+  func getAssetsCountSince(albumId: String, timestamp: Int64, completion: @escaping (Result<Int64, Error>) -> Void)
+  func getAssetsForAlbum(albumId: String, updatedTimeCond: Int64?, completion: @escaping (Result<[PlatformAsset], Error>) -> Void)
   func hashAssets(assetIds: [String], allowNetworkAccess: Bool, completion: @escaping (Result<[HashResult], Error>) -> Void)
   func cancelHashing() throws
 }
@@ -395,11 +395,13 @@ class NativeSyncApiSetup {
       : FlutterBasicMessageChannel(name: "dev.flutter.pigeon.immich_mobile.NativeSyncApi.getMediaChanges\(channelSuffix)", binaryMessenger: binaryMessenger, codec: codec, taskQueue: taskQueue)
     if let api = api {
       getMediaChangesChannel.setMessageHandler { _, reply in
-        do {
-          let result = try api.getMediaChanges()
-          reply(wrapResult(result))
-        } catch {
-          reply(wrapError(error))
+        api.getMediaChanges { result in
+          switch result {
+          case .success(let res):
+            reply(wrapResult(res))
+          case .failure(let error):
+            reply(wrapError(error))
+          }
         }
       }
     } else {
@@ -438,11 +440,13 @@ class NativeSyncApiSetup {
       getAssetIdsForAlbumChannel.setMessageHandler { message, reply in
         let args = message as! [Any?]
         let albumIdArg = args[0] as! String
-        do {
-          let result = try api.getAssetIdsForAlbum(albumId: albumIdArg)
-          reply(wrapResult(result))
-        } catch {
-          reply(wrapError(error))
+        api.getAssetIdsForAlbum(albumId: albumIdArg) { result in
+          switch result {
+          case .success(let res):
+            reply(wrapResult(res))
+          case .failure(let error):
+            reply(wrapError(error))
+          }
         }
       }
     } else {
@@ -453,11 +457,13 @@ class NativeSyncApiSetup {
       : FlutterBasicMessageChannel(name: "dev.flutter.pigeon.immich_mobile.NativeSyncApi.getAlbums\(channelSuffix)", binaryMessenger: binaryMessenger, codec: codec, taskQueue: taskQueue)
     if let api = api {
       getAlbumsChannel.setMessageHandler { _, reply in
-        do {
-          let result = try api.getAlbums()
-          reply(wrapResult(result))
-        } catch {
-          reply(wrapError(error))
+        api.getAlbums { result in
+          switch result {
+          case .success(let res):
+            reply(wrapResult(res))
+          case .failure(let error):
+            reply(wrapError(error))
+          }
         }
       }
     } else {
@@ -471,11 +477,13 @@ class NativeSyncApiSetup {
         let args = message as! [Any?]
         let albumIdArg = args[0] as! String
         let timestampArg = args[1] as! Int64
-        do {
-          let result = try api.getAssetsCountSince(albumId: albumIdArg, timestamp: timestampArg)
-          reply(wrapResult(result))
-        } catch {
-          reply(wrapError(error))
+        api.getAssetsCountSince(albumId: albumIdArg, timestamp: timestampArg) { result in
+          switch result {
+          case .success(let res):
+            reply(wrapResult(res))
+          case .failure(let error):
+            reply(wrapError(error))
+          }
         }
       }
     } else {
@@ -489,11 +497,13 @@ class NativeSyncApiSetup {
         let args = message as! [Any?]
         let albumIdArg = args[0] as! String
         let updatedTimeCondArg: Int64? = nilOrValue(args[1])
-        do {
-          let result = try api.getAssetsForAlbum(albumId: albumIdArg, updatedTimeCond: updatedTimeCondArg)
-          reply(wrapResult(result))
-        } catch {
-          reply(wrapError(error))
+        api.getAssetsForAlbum(albumId: albumIdArg, updatedTimeCond: updatedTimeCondArg) { result in
+          switch result {
+          case .success(let res):
+            reply(wrapResult(res))
+          case .failure(let error):
+            reply(wrapError(error))
+          }
         }
       }
     } else {

mobile/ios/Runner/Sync/MessagesImpl.swift

@@ -18,6 +18,7 @@ struct AssetWrapper: Hashable, Equatable {
 }
 
 class NativeSyncApiImpl: NativeSyncApi {
+  
   private let defaults: UserDefaults
   private let changeTokenKey = "immich:changeToken"
   private let albumTypes: [PHAssetCollectionType] = [.album, .smartAlbum]
@@ -75,7 +76,12 @@ class NativeSyncApiImpl: NativeSyncApi {
     return false
   }
   
-  func getAlbums() throws -> [PlatformAlbum] {
+
+  func getAlbums(completion: @escaping (Result<[PlatformAlbum], any Error>) -> Void) {
+    dispatch(qos: .userInitiated, completion: completion, block: getAlbums)
+  }
+  
+  private func getAlbums() throws -> [PlatformAlbum] {
     var albums: [PlatformAlbum] = []
     
     albumTypes.forEach { type in
@@ -112,7 +118,11 @@ class NativeSyncApiImpl: NativeSyncApi {
     return albums.sorted { $0.id < $1.id }
   }
   
-  func getMediaChanges() throws -> SyncDelta {
+  func getMediaChanges(completion: @escaping (Result<SyncDelta, any Error>) -> Void) {
+    dispatch(qos: .userInitiated, completion: completion, block: getMediaChanges)
+  }
+  
+  private func getMediaChanges() throws -> SyncDelta {
     guard #available(iOS 16, *) else {
       throw PigeonError(code: "UNSUPPORTED_OS", message: "This feature requires iOS 16 or later.", details: nil)
     }
@@ -198,7 +208,11 @@ class NativeSyncApiImpl: NativeSyncApi {
     return albumAssets
   }
   
-  func getAssetIdsForAlbum(albumId: String) throws -> [String] {
+  func getAssetIdsForAlbum(albumId: String, completion: @escaping (Result<[String], any Error>) -> Void) {
+    dispatch(qos: .userInitiated, completion: completion) { try self.getAssetIdsForAlbum(albumId: albumId) }
+  }
+  
+  private func getAssetIdsForAlbum(albumId: String) throws -> [String] {
     let collections = PHAssetCollection.fetchAssetCollections(withLocalIdentifiers: [albumId], options: nil)
     guard let album = collections.firstObject else {
       return []
@@ -214,7 +228,13 @@ class NativeSyncApiImpl: NativeSyncApi {
     return ids
   }
   
-  func getAssetsCountSince(albumId: String, timestamp: Int64) throws -> Int64 {
+  func getAssetsCountSince(albumId: String, timestamp: Int64, completion: @escaping (Result<Int64, any Error>) -> Void) {
+    dispatch(qos: .userInitiated, completion: completion) {
+      try self.getAssetsCountSince(albumId: albumId, timestamp: timestamp)
+    }
+  }
+  
+  private func getAssetsCountSince(albumId: String, timestamp: Int64) throws -> Int64 {
     let collections = PHAssetCollection.fetchAssetCollections(withLocalIdentifiers: [albumId], options: nil)
     guard let album = collections.firstObject else {
       return 0
@@ -228,7 +248,13 @@ class NativeSyncApiImpl: NativeSyncApi {
     return Int64(assets.count)
   }
   
-  func getAssetsForAlbum(albumId: String, updatedTimeCond: Int64?) throws -> [PlatformAsset] {
+  func getAssetsForAlbum(albumId: String, updatedTimeCond: Int64?, completion: @escaping (Result<[PlatformAsset], any Error>) -> Void) {
+    dispatch(qos: .userInitiated, completion: completion) {
+      try self.getAssetsForAlbum(albumId: albumId, updatedTimeCond: updatedTimeCond)
+    }
+  }
+  
+  private func getAssetsForAlbum(albumId: String, updatedTimeCond: Int64?) throws -> [PlatformAsset] {
     let collections = PHAssetCollection.fetchAssetCollections(withLocalIdentifiers: [albumId], options: nil)
     guard let album = collections.firstObject else {
       return []

mobile/pigeon/background_worker_api.dart

@@ -20,10 +20,13 @@ class BackgroundWorkerSettings {
 
 @HostApi()
 abstract class BackgroundWorkerFgHostApi {
+  @async
   void enable();
 
+  @async
   void configure(BackgroundWorkerSettings settings);
 
+  @async
   void disable();
 }
 

mobile/pigeon/background_worker_lock_api.dart

@@ -11,7 +11,9 @@ import 'package:pigeon/pigeon.dart';
 )
 @HostApi()
 abstract class BackgroundWorkerLockApi {
+  @async
   void lock();
 
+  @async
   void unlock();
 }

mobile/pigeon/connectivity_api.dart

@@ -15,6 +15,7 @@ enum NetworkCapability { cellular, wifi, vpn, unmetered }
 
 @HostApi()
 abstract class ConnectivityApi {
+  @async
   @TaskQueue(type: TaskQueueType.serialBackgroundThread)
   List<NetworkCapability> getCapabilities();
 }

mobile/pigeon/native_sync_api.dart

@@ -83,6 +83,7 @@ class HashResult {
 abstract class NativeSyncApi {
   bool shouldFullSync();
 
+  @async
   @TaskQueue(type: TaskQueueType.serialBackgroundThread)
   SyncDelta getMediaChanges();
 
@@ -90,15 +91,19 @@ abstract class NativeSyncApi {
 
   void clearSyncCheckpoint();
 
+  @async
   @TaskQueue(type: TaskQueueType.serialBackgroundThread)
   List<String> getAssetIdsForAlbum(String albumId);
 
+  @async
   @TaskQueue(type: TaskQueueType.serialBackgroundThread)
   List<PlatformAlbum> getAlbums();
 
+  @async
   @TaskQueue(type: TaskQueueType.serialBackgroundThread)
   int getAssetsCountSince(String albumId, int timestamp);
 
+  @async
   @TaskQueue(type: TaskQueueType.serialBackgroundThread)
   List<PlatformAsset> getAssetsForAlbum(String albumId, {int? updatedTimeCond});