/* 
 * Copyright 2003,2004,2005 Colin Crist
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 */

package hermes.fix;

import hermes.util.ByteUtils;

import javax.jms.BytesMessage;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.TextMessage;
import javax.swing.JComponent;

import quickfix.FieldNotFound;

/**
 * @author colincrist@hermesjms.com
 * @version $Id: FIXUtils.java,v 1.7 2006/08/01 07:29:35 colincrist Exp $
 */

public class FIXUtils {
	private static FIXPrettyPrinter defaultPrettyPrinter = new CompactFIXPrettyPrinter();
	private static FIXPrettyPrinter prettyPrinter = null;

	public FIXUtils() {
		super();
	}

	public static JComponent createView(FIXMessage message, boolean displayHeaderAndTrailer, boolean displayValueWithEnum) throws FIXException, FieldNotFound {
		return new FIXMessageViewTable(new FIXMessageViewTableModel(message));
	}

	public static String prettyPrint(FIXMessage message) {
		if (prettyPrinter != null) {
			return prettyPrinter.print(message);
		} else {
			return defaultPrettyPrinter.print(message);
		}
	}

	public static FIXPrettyPrinter getPrettyPrinter() {
		return prettyPrinter;
	}

	public static void setPrettyPrinter(FIXPrettyPrinter prettyPrinter) {
		FIXUtils.prettyPrinter = prettyPrinter;
	}

	public static FIXPrettyPrinter getDefaultPrettyPrinter() {
		return defaultPrettyPrinter;
	}

	public static boolean isFIX(Message message) throws JMSException {
		if (message instanceof TextMessage) {
			String text = ((TextMessage) message).getText();

			return text != null && text.startsWith("8=FIX");
		}

		if (message instanceof BytesMessage) {
			try {
				final byte[] prefix = new byte[5];
				((BytesMessage) message).reset();
				((BytesMessage) message).readBytes(prefix);

				return ByteUtils.startsWith(prefix, "8=FIX");
			} finally {
				((BytesMessage) message).reset();
			}
		}

		return false;
	}

}