Merge pull request #3257 from element-hq/feature/fga/push_subscribe_to_room

Feature/fga/push subscribe to room

Author: ganfra

libraries/featureflag/api/src/main/kotlin/io/element/android/libraries/featureflag/api/FeatureFlags.kt

@@ -120,4 +120,11 @@ enum class FeatureFlags(
         defaultValue = { it.buildType != BuildType.RELEASE },
         isFinished = false,
     ),
+    SyncOnPush(
+        key = "feature.syncOnPush",
+        title = "Sync on push",
+        description = "Subscribe to room sync when a push is received",
+        defaultValue = { false },
+        isFinished = false,
+    ),
 }

libraries/push/impl/build.gradle.kts

@@ -56,6 +56,7 @@ dependencies {
     implementation(projects.libraries.uiStrings)
     implementation(projects.libraries.troubleshoot.api)
     implementation(projects.features.call.api)
+    implementation(projects.libraries.featureflag.api)
     api(projects.libraries.pushproviders.api)
     api(projects.libraries.pushstore.api)
     api(projects.libraries.push.api)

libraries/push/impl/src/main/kotlin/io/element/android/libraries/push/impl/push/OnNotifiableEventReceived.kt

@@ -18,6 +18,9 @@ package io.element.android.libraries.push.impl.push
 
 import com.squareup.anvil.annotations.ContributesBinding
 import io.element.android.libraries.di.AppScope
+import io.element.android.libraries.featureflag.api.FeatureFlagService
+import io.element.android.libraries.featureflag.api.FeatureFlags
+import io.element.android.libraries.matrix.api.MatrixClientProvider
 import io.element.android.libraries.push.impl.notifications.DefaultNotificationDrawerManager
 import io.element.android.libraries.push.impl.notifications.model.NotifiableEvent
 import kotlinx.coroutines.CoroutineScope
@@ -32,10 +35,23 @@ interface OnNotifiableEventReceived {
 class DefaultOnNotifiableEventReceived @Inject constructor(
     private val defaultNotificationDrawerManager: DefaultNotificationDrawerManager,
     private val coroutineScope: CoroutineScope,
+    private val matrixClientProvider: MatrixClientProvider,
+    private val featureFlagService: FeatureFlagService,
 ) : OnNotifiableEventReceived {
     override fun onNotifiableEventReceived(notifiableEvent: NotifiableEvent) {
         coroutineScope.launch {
+            subscribeToRoomIfNeeded(notifiableEvent)
             defaultNotificationDrawerManager.onNotifiableEventReceived(notifiableEvent)
         }
     }
+
+    private fun CoroutineScope.subscribeToRoomIfNeeded(notifiableEvent: NotifiableEvent) = launch {
+        if (!featureFlagService.isFeatureEnabled(FeatureFlags.SyncOnPush)) {
+            return@launch
+        }
+        val client = matrixClientProvider.getOrRestore(notifiableEvent.sessionId).getOrNull() ?: return@launch
+        client.getRoom(notifiableEvent.roomId)?.use { room ->
+            room.subscribeToSync()
+        }
+    }
 }