Fixed state errors in offline mode (#116)

* Display all contacts as offline while in offline mode

* Update message status to sent after relaying message cache

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

@@ -21,8 +21,8 @@ import envoy.event.MessageStatusChangeEvent;
 public abstract class LocalDb {
 
 	protected User								user;
-	protected Map<String, User>					users	= new HashMap<>();
+	protected Map<String, User>					users			= new HashMap<>();
-	protected List<Chat>						chats	= new ArrayList<>();
+	protected List<Chat>						chats			= new ArrayList<>();
 	protected IdGenerator						idGenerator;
 	protected Cache<Message>					messageCache	= new Cache<>();
 	protected Cache<MessageStatusChangeEvent>	statusCache		= new Cache<>();
@@ -143,4 +143,19 @@ public abstract class LocalDb {
 	 * @since Envoy v0.3-alpha
 	 */
 	public void setStatusCache(Cache<MessageStatusChangeEvent> statusCache) { this.statusCache = statusCache; }
+
+	/**
+	 * Searches for a message by ID.
+	 * 
+	 * @param id the ID of the message to search for
+	 * @return the message with the corresponding ID, or {@code null} if no message
+	 *         has been found
+	 * @since Envoy v0.1-beta
+	 */
+	public Message getMessage(long id) {
+		for (Chat c : chats)
+			for (Message m : c.getModel())
+				if (m.getId() == id) return m;
+		return null;
+	}
 }

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

@@ -47,6 +47,9 @@ public class WriteProxy {
 			try {
 				logger.finer("Sending cached " + msg);
 				client.sendMessage(msg);
+
+				// Update message state to SENT in local db
+				localDb.getMessage(msg.getId()).nextStatus();
 			} catch (IOException e) {
 				logger.log(Level.SEVERE, "Could not send cached message", e);
 			}

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

@@ -522,28 +522,6 @@ public class ChatWindow extends JFrame {
 		}
 	}
 
-	/**
-	 * Initializes the elements of the user list by downloading them from the
-	 * server.
-	 *
-	 * @since Envoy v0.1-alpha
-	 */
-	private void loadUsersAndChats() {
-		new Thread(() -> {
-			localDb.getUsers().values().forEach(user -> {
-				userListModel.addElement(user);
-
-				// Check if user exists in local DB
-				if (localDb.getChats().stream().filter(c -> c.getRecipient().getId() == user.getId()).count() == 0)
-					localDb.getChats().add(new Chat(user));
-			});
-			SwingUtilities.invokeLater(() -> userList.setModel(userListModel));
-
-			revalidate();
-			repaint();
-		}).start();
-	}
-
 	private void readCurrentChat() {
 		try {
 			currentChat.read(writeProxy);
@@ -590,7 +568,21 @@ public class ChatWindow extends JFrame {
 		this.client		= client;
 		this.localDb	= localDb;
 		this.writeProxy	= writeProxy;
-		loadUsersAndChats();
+
+		// Load users and chats
+		new Thread(() -> {
+			localDb.getUsers().values().forEach(user -> {
+				userListModel.addElement(user);
+
+				// Check if user exists in local DB
+				if (localDb.getChats().stream().noneMatch(c -> c.getRecipient().getId() == user.getId()))
+					localDb.getChats().add(new Chat(user));
+			});
+			SwingUtilities.invokeLater(() -> userList.setModel(userListModel));
+
+			revalidate();
+			repaint();
+		}).start();
 	}
 
 	/**

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

@@ -17,6 +17,7 @@ import envoy.client.net.Client;
 import envoy.client.net.WriteProxy;
 import envoy.data.Config;
 import envoy.data.Message;
+import envoy.data.User.UserStatus;
 import envoy.exception.EnvoyException;
 import envoy.util.EnvoyLog;
 
@@ -113,7 +114,7 @@ public class Startup {
 		} catch (Exception e) {
 			e.printStackTrace();
 			JOptionPane.showMessageDialog(null,
-					"Error while loading local database: " + e + "\nChats might not be stored locally.",
+					"Error while loading local database: " + e + "\nChats will not be stored locally.",
 					"Local DB error",
 					JOptionPane.WARNING_MESSAGE);
 		}
@@ -121,10 +122,15 @@ public class Startup {
 		// Initialize write proxy
 		final WriteProxy writeProxy = client.createWriteProxy(localDb);
 
-		// Save all users to the local database and flush cache
 		if (client.isOnline()) {
+
+			// Save all users to the local database and flush cache
 			localDb.setUsers(client.getUsers());
 			writeProxy.flushCache();
+		} else {
+
+			// Set all contacts to offline mode
+			localDb.getUsers().values().stream().filter(u -> u != localDb.getUser()).forEach(u -> u.setStatus(UserStatus.OFFLINE));
 		}
 
 		// Display ChatWindow and StatusTrayIcon