/*
 * 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.tika.parser.image.xmp;

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

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import java.util.Collection;

import org.apache.tika.TikaTest;
import org.apache.tika.config.TikaConfig;
import org.apache.tika.exception.TikaException;
import org.apache.tika.metadata.Metadata;
import org.apache.tika.metadata.TikaCoreProperties;
import org.apache.tika.metadata.XMPMM;
import org.apache.tika.parser.ParseContext;
import org.junit.Test;

import javax.xml.parsers.DocumentBuilder;

public class JempboxExtractorTest extends TikaTest {

    @Test
    public void testParseJpeg() throws IOException, TikaException {
        Metadata metadata = new Metadata();
        InputStream stream = getClass().getResourceAsStream("/test-documents/testJPEG_commented.jpg");
        // set some values before extraction to see that they are overridden
        metadata.set(TikaCoreProperties.TITLE, "old title");
        metadata.set(TikaCoreProperties.DESCRIPTION, "old description");
        metadata.set(TikaCoreProperties.CREATOR, "previous author");
        // ... or kept in case the field is multi-value
        metadata.add(TikaCoreProperties.KEYWORDS, "oldkeyword");

        JempboxExtractor extractor = new JempboxExtractor(metadata);
        extractor.parse(stream);

        // DublinCore fields
        assertEquals("Tosteberga \u00C4ngar", metadata.get(TikaCoreProperties.TITLE));
        assertEquals("Bird site in north eastern Sk\u00E5ne, Sweden.\n(new line)", metadata.get(TikaCoreProperties.DESCRIPTION));
        assertEquals("Some Tourist", metadata.get(TikaCoreProperties.CREATOR));
        Collection<String> keywords = Arrays.asList(metadata.getValues(TikaCoreProperties.KEYWORDS));
        assertTrue(keywords.contains("oldkeyword"));
        assertTrue(keywords.contains("grazelands"));
        assertTrue(keywords.contains("nature reserve"));
        assertTrue(keywords.contains("bird watching"));
        assertTrue(keywords.contains("coast"));
        Collection<String> subject = Arrays.asList(metadata.getValues(Metadata.SUBJECT));
        assertTrue(subject.contains("oldkeyword"));
        assertTrue(subject.contains("grazelands"));
        assertTrue(subject.contains("nature reserve"));
        assertTrue(subject.contains("bird watching"));
        assertTrue(subject.contains("coast"));
    }

    @Test
    public void testParseJpegPhotoshop() throws IOException, TikaException {
        Metadata metadata = new Metadata();
        InputStream stream = getClass().getResourceAsStream("/test-documents/testJPEG_commented_pspcs2mac.jpg");

        JempboxExtractor extractor = new JempboxExtractor(metadata);
        extractor.parse(stream);

        // DublinCore fields
        assertEquals("Tosteberga \u00C4ngar", metadata.get(TikaCoreProperties.TITLE));
        assertEquals("Bird site in north eastern Sk\u00E5ne, Sweden.\n(new line)", metadata.get(TikaCoreProperties.DESCRIPTION));
        assertEquals("Some Tourist", metadata.get(TikaCoreProperties.CREATOR));
        Collection<String> keywords = Arrays.asList(metadata.getValues(TikaCoreProperties.KEYWORDS));
        assertTrue(keywords.contains("bird watching"));
        assertTrue(keywords.contains("coast"));
    }

    @Test
    public void testParseJpegXnviewmp() throws IOException, TikaException {
        Metadata metadata = new Metadata();
        InputStream stream = getClass().getResourceAsStream("/test-documents/testJPEG_commented_xnviewmp026.jpg");

        JempboxExtractor extractor = new JempboxExtractor(metadata);
        extractor.parse(stream);

        // XnViewMp fields not understood by Jempbox
        assertEquals("Bird site in north eastern Sk\u00E5ne, Sweden.\n(new line)", metadata.get(TikaCoreProperties.DESCRIPTION));
        Collection<String> keywords = Arrays.asList(metadata.getValues(TikaCoreProperties.KEYWORDS));
        assertTrue(keywords.contains("coast"));
        assertTrue(keywords.contains("nature reserve"));
    }

    @Test
    public void testJoinCreators() {
        assertEquals("Mr B", new JempboxExtractor(null).joinCreators(
                Arrays.asList("Mr B")));
        // TODO use multi-value property instead?
        assertEquals("Mr B, Mr A", new JempboxExtractor(null).joinCreators(
                Arrays.asList("Mr B", "Mr A")));
    }

    @Test
    public void testMaxXMPMMHistory() throws Exception {
        int maxHistory = JempboxExtractor.getMaxXMPMMHistory();
        try {
            Metadata m = new Metadata();
            JempboxExtractor ex = new JempboxExtractor(m);
            ex.parse(getResourceAsStream("/test-documents/testXMP.xmp"));
            assertEquals(7, m.getValues(XMPMM.HISTORY_EVENT_INSTANCEID).length);

            JempboxExtractor.setMaxXMPMMHistory(5);
            m = new Metadata();
            ex = new JempboxExtractor(m);
            ex.parse(getResourceAsStream("/test-documents/testXMP.xmp"));
            assertEquals(5, m.getValues(XMPMM.HISTORY_EVENT_INSTANCEID).length);
        } finally {
            //if something goes wrong, make sure to set this back to what it was
            JempboxExtractor.setMaxXMPMMHistory(maxHistory);
        }
    }

}