/**
 * This file is part of CERMINE project.
 * Copyright (c) 2011-2018 ICM-UW
 *
 * CERMINE 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.
 *
 * CERMINE 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.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with CERMINE. If not, see <http://www.gnu.org/licenses/>.
 */

package pl.edu.icm.cermine.evaluation.transformers;

import java.util.List;
import org.jdom.Element;
import pl.edu.icm.cermine.content.model.ContentStructure;
import pl.edu.icm.cermine.content.model.DocumentSection;
import pl.edu.icm.cermine.exception.TransformationException;
import pl.edu.icm.cermine.tools.XMLTools;
import pl.edu.icm.cermine.tools.transformers.ModelToModelConverter;

/**
 * @author Dominika Tkaczyk (d.tkaczyk@icm.edu.pl)
 */
public class ParscitToContentConverter implements ModelToModelConverter<Element, ContentStructure> {

    @Override
    public ContentStructure convert(Element source, Object... hints) throws TransformationException {
        ContentStructure struct = new ContentStructure();

        if (source == null) {
            return struct;
        }
            
        DocumentSection sec1 = null;
        DocumentSection sec2 = null;
        for (Object secElem : source.getChildren()) {
            if (!(secElem instanceof Element)) {
                continue;
            }
            Element sectionNode = (Element) secElem;
            if (!sectionNode.getName().endsWith("sectionHeader")) {
                continue;
            }
            
            DocumentSection section = new DocumentSection();
            section.setTitle(XMLTools.getTextContent(sectionNode));
            if (sec1 == null || sec2 == null) {
                DocumentSection s = new DocumentSection();
                s.setTitle("-");
                s.setLevel(1);
                struct.addSection(s);
                sec1 = s;
                sec2 = s;
            }
            if ("sectionHeader".equals(sectionNode.getName())) {
                section.setLevel(1);
                struct.addSection(section);
                sec1 = section;
                sec2 = section;
            } else if ("subsectionHeader".equals(sectionNode.getName())) {
                section.setLevel(2);
                sec1.addSection(section);
                sec2 = section;
            } else if ("subsubsectionHeader".equals(sectionNode.getName())) {
                section.setLevel(3);
                sec2.addSection(section);
            }
        }            
        return struct;
    }

    @Override
    public List<ContentStructure> convertAll(List<Element> source, Object... hints) throws TransformationException {
        throw new UnsupportedOperationException("Not supported yet.");
    }

}
