Sync notifications using WorkManager (#5545)

* Initial implementation of notification sync using `WorkManager`

* Use custom `MetroWorkerFactory` to allow assisted injection in WorkManager Workers

* Add tests for `FetchNotificationWorker`. Create `FakeNotificationResolverQueue` to help testing.

* Add more tests, fix Konsist checks

* Add tests for `SyncNotificationWorkManagerRequest`

* Simplify `FakeNotificationResolverQueue`

app/src/main/AndroidManifest.xml

@@ -34,10 +34,17 @@
         <provider
             android:name="androidx.startup.InitializationProvider"
             android:authorities="${applicationId}.androidx-startup"
-            android:exported="false">
+            android:exported="false"
+            tools:node="merge">
             <meta-data
                 android:name='androidx.lifecycle.ProcessLifecycleInitializer'
                 android:value='androidx.startup' />
+
+            <!-- Remove to use Application workManagerConfiguration -->
+            <meta-data
+                android:name="androidx.work.WorkManagerInitializer"
+                android:value="androidx.startup"
+                tools:node="remove" />
         </provider>
 
         <!--
@@ -175,7 +182,6 @@
                 android:name="android.support.FILE_PROVIDER_PATHS"
                 android:resource="@xml/file_providers" />
         </provider>
-
     </application>
 
 </manifest>

app/src/main/kotlin/io/element/android/x/ElementXApplication.kt

@@ -9,17 +9,23 @@ package io.element.android.x
 
 import android.app.Application
 import androidx.startup.AppInitializer
+import androidx.work.Configuration
 import dev.zacsweers.metro.createGraphFactory
 import io.element.android.features.cachecleaner.api.CacheCleanerInitializer
 import io.element.android.libraries.di.DependencyInjectionGraphOwner
+import io.element.android.libraries.workmanager.api.di.MetroWorkerFactory
 import io.element.android.x.di.AppGraph
 import io.element.android.x.info.logApplicationInfo
 import io.element.android.x.initializer.CrashInitializer
 import io.element.android.x.initializer.PlatformInitializer
 
-class ElementXApplication : Application(), DependencyInjectionGraphOwner {
+class ElementXApplication : Application(), DependencyInjectionGraphOwner, Configuration.Provider {
     override val graph: AppGraph = createGraphFactory<AppGraph.Factory>().create(this)
 
+    override val workManagerConfiguration: Configuration = Configuration.Builder()
+            .setWorkerFactory(MetroWorkerFactory(graph.workerProviders))
+            .build()
+
     override fun onCreate() {
         super.onCreate()
         AppInitializer.getInstance(this).apply {
@@ -27,6 +33,7 @@ class ElementXApplication : Application(), DependencyInjectionGraphOwner {
             initializeComponent(PlatformInitializer::class.java)
             initializeComponent(CacheCleanerInitializer::class.java)
         }
+
         logApplicationInfo(this)
     }
 }

app/src/main/kotlin/io/element/android/x/di/AppGraph.kt

@@ -8,16 +8,24 @@
 package io.element.android.x.di
 
 import android.content.Context
+import androidx.work.ListenableWorker
 import dev.zacsweers.metro.AppScope
 import dev.zacsweers.metro.DependencyGraph
+import dev.zacsweers.metro.Multibinds
 import dev.zacsweers.metro.Provides
 import io.element.android.libraries.architecture.NodeFactoriesBindings
 import io.element.android.libraries.di.annotations.ApplicationContext
+import io.element.android.libraries.workmanager.api.di.MetroWorkerFactory
+import kotlin.reflect.KClass
 
 @DependencyGraph(AppScope::class)
 interface AppGraph : NodeFactoriesBindings {
     val sessionGraphFactory: SessionGraph.Factory
 
+    @Multibinds
+    val workerProviders:
+        Map<KClass<out ListenableWorker>, MetroWorkerFactory.WorkerInstanceFactory<*>>
+
     @DependencyGraph.Factory
     interface Factory {
         fun create(