package envoy.server.processors;

import java.io.IOException;
import java.util.logging.*;

import envoy.data.Message.MessageStatus;
import envoy.event.MessageStatusChange;
import envoy.util.EnvoyLog;

import envoy.server.data.PersistenceManager;
import envoy.server.net.*;

/**
 * @author Leon Hofmeister
 * @since Envoy Server Standalone v0.1-alpha
 */
public final class MessageStatusChangeProcessor implements ObjectProcessor<MessageStatusChange> {

	private final ConnectionManager		connectionManager	= ConnectionManager.getInstance();
	private final PersistenceManager	persistenceManager	= PersistenceManager.getInstance();
	private final Logger				logger				=
		EnvoyLog.getLogger(MessageStatusChangeProcessor.class);

	@Override
	public void process(MessageStatusChange statusChange, long socketID,
		ObjectWriteProxy writeProxy) throws IOException {

		// Any other status than READ is not supposed to be sent to the server
		if (statusChange.get() != MessageStatus.READ) {
			logger.log(Level.WARNING, "Invalid " + statusChange);
			return;
		}

		final var msg = persistenceManager.getMessageByID(statusChange.getID());
		if (msg == null)
			return;
		msg.read();
		persistenceManager.updateMessage(msg);

		// Notifies the sender of the message about the status-update to READ
		final long senderID = msg.getSender().getID();
		if (connectionManager.isOnline(senderID))
			writeProxy.write(connectionManager.getSocketID(senderID), statusChange);
	}
}