/* ====================================================================
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   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
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package org.apache.poi.hssf.usermodel;

import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;

import javax.imageio.ImageIO;

import junit.framework.TestCase;

import org.apache.poi.hssf.HSSFTestDataSamples;

/**
 * Test <code>HSSFPictureData</code>.
 * The code to retrieve images from a workbook provided by Trejkaz (trejkaz at trypticon dot org) in Bug 41223.
 *
 * @author Yegor Kozlov (yegor at apache dot org)
 * @author Trejkaz (trejkaz at trypticon dot org)
 */
public final class TestHSSFPictureData extends TestCase{


	public void testPictures() throws IOException {
        HSSFWorkbook wb = HSSFTestDataSamples.openSampleWorkbook("SimpleWithImages.xls");

        @SuppressWarnings("unchecked") // TODO - add getFormat() to interface PictureData and genericise wb.getAllPictures()
        List<HSSFPictureData> lst = (List<HSSFPictureData>)(List<?>)wb.getAllPictures();
        //assertEquals(2, lst.size());

        for (Iterator it = lst.iterator(); it.hasNext(); ) {
            HSSFPictureData pict = (HSSFPictureData)it.next();
            String ext = pict.suggestFileExtension();
            byte[] data = pict.getData();
            if (ext.equals("jpeg")){
                //try to read image data using javax.imageio.* (JDK 1.4+)
                BufferedImage jpg = ImageIO.read(new ByteArrayInputStream(data));
                assertNotNull(jpg);
                assertEquals(192, jpg.getWidth());
                assertEquals(176, jpg.getHeight());
                assertEquals(HSSFWorkbook.PICTURE_TYPE_JPEG, pict.getFormat());
                assertEquals("image/jpeg", pict.getMimeType());
            } else if (ext.equals("png")){
                //try to read image data using javax.imageio.* (JDK 1.4+)
                BufferedImage png = ImageIO.read(new ByteArrayInputStream(data));
                assertNotNull(png);
                assertEquals(300, png.getWidth());
                assertEquals(300, png.getHeight());
                assertEquals(HSSFWorkbook.PICTURE_TYPE_PNG, pict.getFormat());
                assertEquals("image/png", pict.getMimeType());
            } else {
                //TODO: test code for PICT, WMF and EMF
            }
        }
    }
	
	public void testMacPicture() throws IOException {
        HSSFWorkbook wb = HSSFTestDataSamples.openSampleWorkbook("53446.xls");

        @SuppressWarnings("unchecked")
        List<HSSFPictureData> lst = (List<HSSFPictureData>)(List<?>)wb.getAllPictures();
        assertEquals(1, lst.size());

        HSSFPictureData pict = lst.get(0);
        String ext = pict.suggestFileExtension();
        if (!ext.equals("png")) {
            fail("Expected a PNG.");
        }

        //try to read image data using javax.imageio.* (JDK 1.4+)
        byte[] data = pict.getData();
        BufferedImage png = ImageIO.read(new ByteArrayInputStream(data));
        assertNotNull(png);
        assertEquals(78, png.getWidth());
        assertEquals(76, png.getHeight());
        assertEquals(HSSFWorkbook.PICTURE_TYPE_PNG, pict.getFormat());
        assertEquals("image/png", pict.getMimeType());
    }

    public void testNotNullPictures() throws IOException {

        HSSFWorkbook wb = HSSFTestDataSamples.openSampleWorkbook("SheetWithDrawing.xls");

        @SuppressWarnings("unchecked") // TODO - add getFormat() to interface PictureData and genericise wb.getAllPictures()
        List<HSSFPictureData> lst = (List<HSSFPictureData>)(List<?>)wb.getAllPictures();
        for(HSSFPictureData pict : lst){
            assertNotNull(pict);
        }
    }

}