/*
 * Copyright (c) 2015-2016 William Bittle  http://www.praisenter.org/
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification, are permitted 
 * provided that the following conditions are met:
 * 
 *   * Redistributions of source code must retain the above copyright notice, this list of conditions 
 *     and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright notice, this list of conditions 
 *     and the following disclaimer in the documentation and/or other materials provided with the 
 *     distribution.
 *   * Neither the name of Praisenter nor the names of its contributors may be used to endorse or 
 *     promote products derived from this software without specific prior written permission.
 *     
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR 
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 
 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.praisenter.data.json;

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

import javax.imageio.ImageIO;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;

/**
 * Json deserializer for a BufferedImage that is a Base64 encoded string.
 * @author William Bittle
 * @version 3.0.0
 */
public final class BufferedImagePngJsonDeserializer extends JsonDeserializer<BufferedImage> {
	/** The class-level logger */
	private static final Logger LOGGER = LogManager.getLogger();
	
	/* (non-Javadoc)
	 * @see com.fasterxml.jackson.databind.JsonDeserializer#deserialize(com.fasterxml.jackson.core.JsonParser, com.fasterxml.jackson.databind.DeserializationContext)
	 */
	@Override
	public BufferedImage deserialize(JsonParser parser, DeserializationContext context) throws IOException, JsonProcessingException {
		byte[] data = parser.getBinaryValue();
		if (data != null) {
			try {
				return ImageIO.read(new ByteArrayInputStream(data));
			} catch (Exception ex) {
				LOGGER.warn("Failed to read byte array as image at '" + parser.getCurrentName() + "'.", ex);
			}
		}
		return null;
	}
}
