Improved logout mechanism a bit, still pretty buggy

(and fixed some inconsistencies)

client/src/main/java/envoy/client/data/Cache.java

@@ -1,11 +1,9 @@
 package envoy.client.data;
 
 import java.io.Serializable;
-import java.util.LinkedList;
+import java.util.*;
-import java.util.Queue;
 import java.util.function.Consumer;
-import java.util.logging.Level;
+import java.util.logging.*;
-import java.util.logging.Logger;
 
 import envoy.util.EnvoyLog;
 
@@ -62,4 +60,11 @@ public final class Cache<T> implements Consumer<T>, Serializable {
 		elements.forEach(processor::accept);
 		elements.clear();
 	}
+
+	/**
+	 * Clears this cache of all stored elements.
+	 *
+	 * @since Envoy Client v0.2-beta
+	 */
+	public void clear() { elements.clear(); }
 }

client/src/main/java/envoy/client/data/LocalDB.java

@@ -40,6 +40,10 @@ public final class LocalDB implements EventListener {
 	private CacheMap			cacheMap	= new CacheMap();
 	private String				authToken;
 
+	// auto save Timer
+	private Timer	autoSaver;
+	private boolean	autoSaveRestart	= true;
+
 	// State management
 	private Instant lastSync = Instant.EPOCH;
 
@@ -167,7 +171,14 @@ public final class LocalDB implements EventListener {
 	 * @since Envoy Client v0.2-beta
 	 */
 	public void initAutoSave() {
-		new Timer("LocalDB Autosave", true).schedule(new TimerTask() {
+
+		if (autoSaveRestart) {
+			// A logout happened so the timer should be restarted
+			autoSaver		= new Timer("LocalDB Autosave", true);
+			autoSaveRestart	= false;
+		}
+
+		autoSaver.schedule(new TimerTask() {
 
 			@Override
 			public void run() { save(); }
@@ -219,12 +230,16 @@ public final class LocalDB implements EventListener {
 	 */
 	@Event(eventType = Logout.class, priority = 100)
 	public void onLogout() {
+		autoSaver.cancel();
+		autoSaveRestart = true;
 		lastLoginFile.delete();
 		userFile	= null;
 		user		= null;
 		authToken	= null;
 		chats.clear();
-		cacheMap = new CacheMap();
+		lastSync = Instant.EPOCH;
+		cacheMap.getMap().forEach((key, cache) -> cache.clear());
+		// cacheMap = new CacheMap();
 	}
 
 	/**

client/src/main/java/envoy/client/event/Logout.java

@@ -8,7 +8,7 @@ import envoy.event.Event.Valueless;
  * @author leon
  * @since Envoy Client v0.2-beta
  */
-public class Logout extends Valueless {
+public final class Logout extends Valueless {
 
 	private static final long serialVersionUID = 1L;
 }

client/src/main/java/envoy/client/helper/ShutdownHelper.java

@@ -1,11 +1,14 @@
 package envoy.client.helper;
 
+import java.util.logging.Level;
+
 import javafx.scene.control.Alert;
 import javafx.scene.control.Alert.AlertType;
 
 import envoy.client.data.*;
 import envoy.client.event.*;
 import envoy.client.ui.SceneContext.SceneInfo;
+import envoy.util.EnvoyLog;
 
 import dev.kske.eventbus.EventBus;
 
@@ -47,6 +50,7 @@ public class ShutdownHelper {
 		alert.setContentText("Are you sure you want to log out?");
 
 		AlertHelper.confirmAction(alert, () -> {
+			EnvoyLog.getLogger(ShutdownHelper.class).log(Level.INFO, "A logout was requested");
 			EventBus.getInstance().dispatch(new EnvoyCloseEvent());
 			EventBus.getInstance().dispatch(new Logout());
 			Context.getInstance().getSceneContext().load(SceneInfo.LOGIN_SCENE);

client/src/main/java/envoy/client/net/Client.java

@@ -180,7 +180,7 @@ public final class Client implements EventListener, Closeable {
 		receiver.registerProcessor(GroupCreationResult.class, eventBus::dispatch);
 
 		// Request a generator if none is present or the existing one is consumed
-		if (!localDB.hasIDGenerator() || !localDB.getIDGenerator().hasNext()) requestIdGenerator();
+		if (!localDB.hasIDGenerator() || !localDB.getIDGenerator().hasNext()) requestIDGenerator();
 
 		// Relay caches
 		cacheMap.getMap().values().forEach(Cache::relay);
@@ -204,6 +204,7 @@ public final class Client implements EventListener, Closeable {
 	 *
 	 * @param evt the event to send
 	 * @throws IOException if the event did not reach the server
+	 * @since Envoy Client v0.3-alpha
 	 */
 	public void sendEvent(Event<?> evt) throws IOException { if (online) writeObject(evt); }
 
@@ -213,7 +214,7 @@ public final class Client implements EventListener, Closeable {
 	 * @throws IOException if the request does not reach the server
 	 * @since Envoy Client v0.3-alpha
 	 */
-	public void requestIdGenerator() throws IOException {
+	public void requestIDGenerator() throws IOException {
 		logger.log(Level.INFO, "Requesting new id generator...");
 		writeObject(new IDGeneratorRequest());
 	}
@@ -271,6 +272,7 @@ public final class Client implements EventListener, Closeable {
 
 	/**
 	 * @return the {@link Receiver} used by this {@link Client}
+	 * @since v0.2-alpha
 	 */
 	public Receiver getReceiver() { return receiver; }
 

client/src/main/java/envoy/client/net/Receiver.java

@@ -37,6 +37,7 @@ public final class Receiver extends Thread {
 	public Receiver(InputStream in) {
 		super("Receiver");
 		this.in = in;
+		setDaemon(true);
 	}
 
 	/**

client/src/main/java/envoy/client/ui/SceneContext.java

@@ -11,7 +11,7 @@ import javafx.scene.input.*;
 import javafx.stage.Stage;
 
 import envoy.client.data.Settings;
-import envoy.client.event.ThemeChangeEvent;
+import envoy.client.event.*;
 import envoy.client.helper.ShutdownHelper;
 import envoy.util.EnvoyLog;
 
@@ -97,6 +97,7 @@ public final class SceneContext implements EventListener {
 	 * @since Envoy Client v0.1-beta
 	 */
 	public void load(SceneInfo sceneInfo) {
+		EnvoyLog.getLogger(SceneContext.class).log(Level.FINER, "Loading scene " + sceneInfo);
 		loader.setRoot(null);
 		loader.setController(null);
 
@@ -166,6 +167,12 @@ public final class SceneContext implements EventListener {
 		}
 	}
 
+	@Event(eventType = Logout.class, priority = 150)
+	private void onLogout() {
+		sceneStack.clear();
+		controllerStack.clear();
+	}
+
 	@Event(priority = 150, eventType = ThemeChangeEvent.class)
 	private void onThemeChange() { applyCSS(); }
 

client/src/main/java/envoy/client/ui/controller/ChatScene.java

@@ -325,6 +325,9 @@ public final class ChatScene implements EventListener, Restorable {
 		else recipientProfilePic.setImage(IconUtil.loadIconThemeSensitive("group_icon", 43));
 	}
 
+	@Event(eventType = Logout.class, priority = 200)
+	private void onLogout() { eventBus.removeListener(this); }
+
 	/**
 	 * Initializes all {@code SystemCommands} used in {@code ChatScene}.
 	 *
@@ -711,7 +714,7 @@ public final class ChatScene implements EventListener, Restorable {
 			scrollToMessageListEnd();
 
 			// Request a new ID generator if all IDs were used
-			if (!localDB.getIDGenerator().hasNext() && client.isOnline()) client.requestIdGenerator();
+			if (!localDB.getIDGenerator().hasNext() && client.isOnline()) client.requestIDGenerator();
 
 		} catch (final IOException e) {
 			logger.log(Level.SEVERE, "Error while sending message: ", e);