/**
 *
 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either 
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public 
 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 * 
 **/
package lucee.runtime.img.coder;

import java.awt.image.BufferedImage;
import java.io.IOException;

import lucee.commons.io.res.Resource;
import lucee.commons.lang.ExceptionUtil;

class DoubleCoder extends Coder {

	private Coder first;
	private Coder second;
	
	private String[] writerFormatNames;
	private String[] readerFormatNames;

	public DoubleCoder(Coder first, Coder second){
		this.first=first;
		this.second=second;
	}
	
	@Override
	public BufferedImage toBufferedImage(Resource res, String format) throws IOException {
		try {
			return first.toBufferedImage(res, format);
		}
		catch(IOException ioe){
			return second.toBufferedImage(res, format);
		}
	}

	@Override
	public BufferedImage toBufferedImage(byte[] bytes, String format) throws IOException {
		try {
			return first.toBufferedImage(bytes, format);
		}
		catch(IOException ioe){
			return second.toBufferedImage(bytes, format);
		}
	}

	@Override
	public final String[] getWriterFormatNames() {
		if(writerFormatNames==null)	{
			writerFormatNames=JRECoder.mixTogetherOrdered(first.getWriterFormatNames(),second.getWriterFormatNames());
		}
		return writerFormatNames;
	}
	
	@Override
	public final String[] getReaderFormatNames() {
		if(readerFormatNames==null){
			readerFormatNames=JRECoder.mixTogetherOrdered(first.getReaderFormatNames(),second.getReaderFormatNames());
		}
		return readerFormatNames;
	}

}