Remote wipe activated activity

briar-android/src/main/java/org/briarproject/briar/android/AndroidNotificationManagerImpl.java

@@ -41,7 +41,6 @@ import org.briarproject.briar.api.blog.event.BlogPostAddedEvent;
 import org.briarproject.briar.api.conversation.event.ConversationMessageReceivedEvent;
 import org.briarproject.briar.api.forum.event.ForumPostReceivedEvent;
 import org.briarproject.briar.api.privategroup.event.GroupMessageAddedEvent;
-import org.briarproject.briar.api.remotewipe.RemoteWipeActivatedEvent;
 
 import java.util.Set;
 import java.util.concurrent.Callable;

briar-android/src/main/java/org/briarproject/briar/android/remotewipe/RemoteWipeActivatedActivity.java

@@ -6,19 +6,36 @@ import org.briarproject.briar.android.activity.ActivityComponent;
 import org.briarproject.briar.android.activity.BriarActivity;
 
 import javax.annotation.Nullable;
+import javax.inject.Inject;
+
+import androidx.lifecycle.ViewModelProvider;
 
 
 public class RemoteWipeActivatedActivity extends BriarActivity {
 
+	@Inject
+	ViewModelProvider.Factory viewModelFactory;
+	RemoteWipeActivatedViewModel viewModel;
+
+	@Override
+	public void injectActivity(ActivityComponent component) {
+		component.inject(this);
+
+		viewModel = new ViewModelProvider(this, viewModelFactory)
+				.get(RemoteWipeActivatedViewModel.class);
+	}
+
 	@Override
 	public void onCreate(@Nullable Bundle savedInstanceState) {
 		super.onCreate(savedInstanceState);
 
-		signOut(true, true);
+		viewModel.getConfirmSent()
-	}
+				.observeEvent(this, confirmed -> {
+					if (confirmed) {
+						signOut(true, true);
+					}
+				});
 
-	@Override
+		viewModel.sendConfirmMessages();
-	public void injectActivity(ActivityComponent component) {
-		component.inject(this);
 	}
 }

briar-android/src/main/java/org/briarproject/briar/android/remotewipe/RemoteWipeActivatedViewModel.java

@@ -1,2 +1,62 @@
-package org.briarproject.briar.android.remotewipe;public class RemoteWipeActivatedViewModel {
+package org.briarproject.briar.android.remotewipe;
+
+import android.app.Application;
+
+import org.briarproject.bramble.api.FormatException;
+import org.briarproject.bramble.api.db.DatabaseComponent;
+import org.briarproject.bramble.api.db.DbException;
+import org.briarproject.bramble.api.event.Event;
+import org.briarproject.bramble.api.event.EventBus;
+import org.briarproject.bramble.api.event.EventListener;
+import org.briarproject.bramble.api.sync.event.MessagesSentEvent;
+import org.briarproject.briar.android.viewmodel.LiveEvent;
+import org.briarproject.briar.android.viewmodel.MutableLiveEvent;
+import org.briarproject.briar.api.remotewipe.RemoteWipeManager;
+
+import javax.inject.Inject;
+
+import androidx.annotation.NonNull;
+import androidx.lifecycle.AndroidViewModel;
+
+public class RemoteWipeActivatedViewModel extends AndroidViewModel implements
+		EventListener {
+	private final RemoteWipeManager remoteWipeManager;
+	private final DatabaseComponent db;
+	private final MutableLiveEvent<Boolean> confirmSent =
+			new MutableLiveEvent<>();
+
+	@Inject
+	RemoteWipeActivatedViewModel(
+			@NonNull Application application,
+			RemoteWipeManager remoteWipeManager,
+			DatabaseComponent db, EventBus eventBus) {
+		super(application);
+		this.remoteWipeManager = remoteWipeManager;
+		this.db = db;
+		eventBus.addListener(this);
+	}
+
+	public void sendConfirmMessages() {
+		try {
+			db.transaction(false,
+					remoteWipeManager::sendConfirmMessages);
+		} catch (DbException | FormatException e) {
+			System.out.println(e);
+			// If there is a problem sending the messages, just wipe
+			confirmSent.postEvent(true);
+		}
+	}
+
+	public LiveEvent<Boolean> getConfirmSent() {
+		return confirmSent;
+	}
+
+	@Override
+	public void eventOccurred(Event e) {
+		// As soon as we know a message is sent, we can wipe
+		if (e instanceof MessagesSentEvent) {
+          confirmSent.postEvent(true);
+		}
+	}
 }
+

briar-android/src/main/java/org/briarproject/briar/android/remotewipe/RemoteWipeModule.java

@@ -29,4 +29,10 @@ public abstract class RemoteWipeModule {
 	@ViewModelKey(RevokeRemoteWipeViewModel.class)
 	abstract ViewModel bindRevokeRemoteWipeViewModel(
 			RevokeRemoteWipeViewModel RevokeRemoteWipeViewModel);
+
+	@Binds
+	@IntoMap
+	@ViewModelKey(RemoteWipeActivatedViewModel.class)
+	abstract ViewModel bindRemoteWipeActivatedViewModel(
+			RemoteWipeActivatedViewModel remoteWipeActivatedViewModel);
 }