Added support for sending groupMessages

* Implemented distinguishing between regular messages and groupMessages
when sending messages to the server (and sends the right object
obviously)

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

@@ -241,7 +241,8 @@ public final class ChatScene {
 	}
 
 	/**
-	 * Sends a new message to the server based on the text entered in the
+	 * Sends a new message or groupMessage to the server based on the text entered
+	 * in the
 	 * messageTextArea.
 	 *
 	 * @since Envoy Client v0.1-beta
@@ -249,6 +250,18 @@ public final class ChatScene {
 	@FXML
 	private void postMessage() {
 		try {
+			if (currentChat.getRecipient().getClass().equals(Group.class)) {
+				// Create and send groupMessage
+				final var groupMessage = new MessageBuilder(localDB.getUser().getID(), currentChat.getRecipient().getID(), localDB.getIDGenerator())
+					.setText(messageTextArea.getText().strip())
+					.buildGroupMessage((Group) currentChat.getRecipient());
+
+				// Send groupMessage
+				writeProxy.writeMessage(groupMessage);
+
+				// Add message to LocalDB and update UI
+				messageList.getItems().add(groupMessage);
+			} else {
 				// Create and send message
 				final var message = new MessageBuilder(localDB.getUser().getID(), currentChat.getRecipient().getID(), localDB.getIDGenerator())
 					.setText(messageTextArea.getText().strip())
@@ -259,6 +272,7 @@ public final class ChatScene {
 
 				// Add message to LocalDB and update UI
 				messageList.getItems().add(message);
+			}
 
 			// Request a new ID generator if all IDs were used
 			if (!localDB.getIDGenerator().hasNext() && client.isOnline()) client.requestIdGenerator();