/**
 * Copyright or © or Copr. Ministère Français chargé de la Culture
 * et de la Communication (2013)
 * <p/>
 * contact.gincoculture_at_gouv.fr
 * <p/>
 * This software is a computer program whose purpose is to provide a thesaurus
 * management solution.
 * <p/>
 * This software is governed by the CeCILL license under French law and
 * abiding by the rules of distribution of free software. You can use,
 * modify and/ or redistribute the software under the terms of the CeCILL
 * license as circulated by CEA, CNRS and INRIA at the following URL
 * "http://www.cecill.info".
 * <p/>
 * As a counterpart to the access to the source code and rights to copy,
 * modify and redistribute granted by the license, users are provided only
 * with a limited warranty and the software's author, the holder of the
 * economic rights, and the successive licensors have only limited liability.
 * <p/>
 * In this respect, the user's attention is drawn to the risks associated
 * with loading, using, modifying and/or developing or reproducing the
 * software by the user in light of its specific status of free software,
 * that may mean that it is complicated to manipulate, and that also
 * therefore means that it is reserved for developers and experienced
 * professionals having in-depth computer knowledge. Users are therefore
 * encouraged to load and test the software's suitability as regards their
 * requirements in conditions enabling the security of their systemsand/or
 * data to be ensured and, more generally, to use and operate it in the
 * same conditions as regards security.
 * <p/>
 * The fact that you are presently reading this means that you have had
 * knowledge of the CeCILL license and that you accept its terms.
 */
package fr.mcc.ginco.imports;

import com.hp.hpl.jena.rdf.model.Model;
import com.hp.hpl.jena.rdf.model.Resource;
import com.hp.hpl.jena.rdf.model.Statement;
import com.hp.hpl.jena.rdf.model.StmtIterator;
import fr.mcc.ginco.beans.Thesaurus;
import fr.mcc.ginco.beans.ThesaurusArray;
import fr.mcc.ginco.beans.ThesaurusArrayConcept;
import fr.mcc.ginco.beans.ThesaurusConcept;
import fr.mcc.ginco.dao.IThesaurusConceptDAO;
import fr.mcc.ginco.skos.namespaces.SKOS;
import fr.mcc.ginco.utils.ConceptHierarchyUtil;
import org.springframework.stereotype.Service;

import javax.inject.Inject;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

/**
 * builder in charge of building thesaurus arrays
 */
@Service("skosArrayBuilder")
public class ThesaurusArrayBuilder extends AbstractBuilder {

	@Inject
	private IThesaurusConceptDAO thesaurusConceptDAO;

	public ThesaurusArrayBuilder() {
		super();
	}

	/**
	 * Builds a ThesaurusArray from the given resource
	 *
	 * @param skosCollection
	 * @param model
	 * @param thesaurus
	 * @return
	 */
	public ThesaurusArray buildArray(Resource skosCollection, Model model,
	                                 Thesaurus thesaurus, Map<String, ThesaurusArray> builtArrays) {

		ThesaurusArray array = new ThesaurusArray();
		array.setIdentifier(skosCollection.getURI());
		array.setThesaurus(thesaurus);

		StmtIterator stmtMembersItr = skosCollection
				.listProperties(SKOS.MEMBER);
		Set<ThesaurusConcept> membersConcepts = new HashSet<ThesaurusConcept>();
		while (stmtMembersItr.hasNext()) {
			Statement stmt = stmtMembersItr.next();
			Resource memberRes = stmt.getObject().asResource();
			String relatedURI = memberRes.getURI();
			if (thesaurusConceptDAO.getById(relatedURI) != null) {
				ThesaurusConcept memberConcept = thesaurusConceptDAO
						.getById(relatedURI);
				membersConcepts.add(memberConcept);
			}
		}
		Set<ThesaurusArrayConcept> thesaurusArrayConcepts = new HashSet<ThesaurusArrayConcept>();
		int i = 0;
		for (ThesaurusConcept concept : membersConcepts) {
			ThesaurusArrayConcept arrayConcept = new ThesaurusArrayConcept();
			ThesaurusArrayConcept.Id arrayConceptId = new ThesaurusArrayConcept.Id();
			arrayConceptId.setConceptId(concept.getIdentifier());
			arrayConceptId.setThesaurusArrayId(skosCollection.getURI());
			arrayConcept.setIdentifier(arrayConceptId);
			arrayConcept.setConcepts(concept);
			arrayConcept.setArrayOrder(i);
			i++;
			thesaurusArrayConcepts.add(arrayConcept);
		}
		array.setConcepts(thesaurusArrayConcepts);

		array.setSuperOrdinateConcept(ConceptHierarchyUtil.getSuperOrdinate(membersConcepts));

		array.setOrdered(true);

		builtArrays.put(skosCollection.getURI(), array);
		return array;
	}

	/**
	 * Builds children of ThesaurusArray from the given resource
	 *
	 * @param skosCollection
	 * @param thesaurus
	 * @return
	 */
	public List<ThesaurusArray> getChildrenArrays(Resource skosCollection,
	                                              Thesaurus thesaurus, Map<String, ThesaurusArray> builtArrays) {

		StmtIterator stmtMembersItr = skosCollection
				.listProperties(SKOS.MEMBER);
		List<ThesaurusArray> membersArrays = new ArrayList<ThesaurusArray>();
		while (stmtMembersItr.hasNext()) {
			Statement stmt = stmtMembersItr.next();
			Resource memberRes = stmt.getObject().asResource();
			String relatedURI = memberRes.getURI();
			if (builtArrays.get(relatedURI) != null) {
				ThesaurusArray memberArray = builtArrays.get(relatedURI);
				memberArray.setParent(builtArrays.get(skosCollection.getURI()));
				membersArrays.add(memberArray);
			}
		}
		return membersArrays;
	}

}