/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.sanselan.formats.jpeg.iptc;

import java.io.File;
import java.io.IOException;
import java.util.List;

import org.apache.sanselan.ImageReadException;
import org.apache.sanselan.SanselanTest;
import org.apache.sanselan.common.byteSources.ByteSource;
import org.apache.sanselan.common.byteSources.ByteSourceFile;
import org.apache.sanselan.formats.jpeg.JpegImageParser;

public abstract class IptcBaseTest extends SanselanTest
{
	protected static boolean hasIptcData(File file) throws IOException,
			ImageReadException
	{
		//		Debug.debug("hasIptcData file", file.getAbsoluteFile());

		if (!file.getName().toLowerCase().endsWith(".jpg"))
			return false;
		//ImageFormat format = Sanselan.guessFormat(file);
		//if (format != ImageFormat.IMAGE_FORMAT_JPEG)
		//	return false;

		try
		{
			ByteSource byteSource = new ByteSourceFile(file);
			return new JpegImageParser().hasIptcSegment(byteSource);
		}
		catch (Exception e)
		{
			//			Debug.debug("Error file", file.getAbsoluteFile());
			//			Debug.debug(e, 4);
			return false;
		}
	}

	private static final ImageFilter HAS_IPTC_IMAGE_FILTER = new ImageFilter()
	{
		public boolean accept(File file) throws IOException, ImageReadException
		{
			return hasIptcData(file);
		}
	};

	private static final ImageFilter JPEG_IMAGE_FILTER = new ImageFilter()
	{
		public boolean accept(File file) throws IOException, ImageReadException
		{
			return file.getName().toLowerCase().endsWith(".jpg");
		}
	};

	protected File getImageWithIptcData() throws IOException,
			ImageReadException
	{
		return getTestImage(HAS_IPTC_IMAGE_FILTER);
	}

	protected List getImagesWithIptcData() throws IOException,
			ImageReadException
	{
		return getTestImages(HAS_IPTC_IMAGE_FILTER);
	}

	protected List getImagesWithIptcData(int max) throws IOException,
			ImageReadException
	{
		return getTestImages(HAS_IPTC_IMAGE_FILTER, max);
	}

	protected File getJpegImage() throws IOException, ImageReadException
	{
		return getTestImage(JPEG_IMAGE_FILTER);
	}

	protected List getJpegImages() throws IOException, ImageReadException
	{
		return getTestImages(JPEG_IMAGE_FILTER);
	}

	protected List getJpegImages(int max) throws IOException,
			ImageReadException
	{
		return getTestImages(JPEG_IMAGE_FILTER, max);
	}

}
