/*
 * This is eMonocot, a global online biodiversity information resource.
 *
 * Copyright © 2011–2015 The Board of Trustees of the Royal Botanic Gardens, Kew and The University of Oxford
 *
 * eMonocot is free software: you can redistribute it and/or modify it under the terms of the
 * GNU Affero General Public License as published by the Free Software Foundation, either version 3
 * of the License, or (at your option) any later version.
 *
 * eMonocot 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 Affero General Public License for more details.
 *
 * The complete text of the GNU Affero General Public License is in the source repository as the file
 * ‘COPYING’.  It is also available from <http://www.gnu.org/licenses/>.
 */
package org.emonocot.harvest.media;

import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import java.io.File;
import java.util.Properties;

import org.apache.sanselan.ImageInfo;
import org.apache.sanselan.Sanselan;
import org.emonocot.model.Image;
import org.emonocot.model.constants.MediaFormat;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;

/**
 * @author jk00kg
 *
 */
public class ImageResizerIntegrationTest {

	/**
	 *
	 */
	private static final String TEST_IMAGE_DIRECTORY = "target/test-classes/org/emonocot/job/media";

	/**
	 *
	 */
	private ImageResizerImpl resizer;

	/**
	 * @throws java.lang.Exception
	 */
	@Before
	public void setUp() throws Exception {
		resizer = new ImageResizerImpl();
		resizer.setImageDirectory(TEST_IMAGE_DIRECTORY);
		Resource propertiesFile = new ClassPathResource("META-INF/spring/application.properties");
		Properties properties = new Properties();
		properties.load(propertiesFile.getInputStream());
		String imageMagickSearchPath = properties.getProperty("harvester.imagemagick.path", "/usr/bin");
		resizer.setImageMagickSearchPath(imageMagickSearchPath);

	}

	/**
	 * @throws java.lang.Exception
	 */
	@After
	public void tearDown() throws Exception {
	}

	@Test
	public final void testNoResize() {
		//Set up
		long imageNumber = 0L;
		Image image = new Image();
		image.setId(imageNumber);
		image.setFormat(MediaFormat.jpg);
		ImageInfo info = null;
		Integer originalHeight = null;
		Integer originalWidth = null;
		try {
			info = Sanselan.getImageInfo(new File(TEST_IMAGE_DIRECTORY + File.separator + imageNumber + ".jpg"));
			originalHeight = new Integer(info.getHeight());
			originalWidth = new Integer(info.getWidth());
		} catch (Exception e) {
			e.printStackTrace();
			fail("Unable to read original image");
		}
		//Run resize
		try {
			resizer.process(image);
			info = Sanselan.getImageInfo(new File(TEST_IMAGE_DIRECTORY + File.separator + imageNumber + ".jpg"));
			assertTrue("The image height should be unchanged", info.getHeight() == originalHeight.intValue());
			assertTrue("The image width should be unchanged", info.getWidth() == originalWidth.intValue());
		} catch (Exception e) {
			e.printStackTrace();
			fail(e.getMessage());
		}
	}

	@Test
	public final void testResize() {
		//Set up
		long imageNumber = 1L;
		Image image = new Image();
		image.setId(imageNumber);
		image.setFormat(MediaFormat.jpg);
		ImageInfo info = null;
		Integer originalHeight = null;
		Integer originalWidth = null;
		try {
			info = Sanselan.getImageInfo(new File(TEST_IMAGE_DIRECTORY + File.separator + imageNumber + ".jpg"));
			originalHeight = new Integer(info.getHeight());
			originalWidth = new Integer(info.getWidth());
			assertTrue("The dimensions of the original image do not meet the requirements for this test", originalHeight > 1000 && originalWidth > 1000);
		} catch (Exception e) {
			e.printStackTrace();
			fail("Unable to read original image");
		}
		//Run resize
		try {
			resizer.process(image);
			info = Sanselan.getImageInfo(new File(TEST_IMAGE_DIRECTORY + File.separator + imageNumber + ".jpg"));
			assertTrue("The image height should have been reduced to no more than 1000px", info.getHeight() <= 1000);
			assertTrue("The image width should have been reduced to no more than 1000px", info.getWidth() <= 1000);
		} catch (Exception e) {
			e.printStackTrace();
			fail(e.getMessage());
		}
	}

}