/*
 * PatientView
 *
 * Copyright (c) Worth Solutions Limited 2004-2013
 *
 * This file is part of PatientView.
 *
 * PatientView is free software: you can redistribute it and/or modify it under the terms of the
 * GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
 * or (at your option) any later version.
 * PatientView 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 General Public License for more details.
 * You should have received a copy of the GNU General Public License along with PatientView in a file
 * titled COPYING. If not, see <http://www.gnu.org/licenses/>.
 *
 * @package PatientView
 * @link http://www.patientview.org
 * @author PatientView <info@patientview.org>
 * @copyright Copyright (c) 2004-2013, Worth Solutions Limited
 * @license http://www.gnu.org/licenses/gpl-3.0.html The GNU General Public License V3.0
 */

package org.patientview.repository.impl;

import org.patientview.patientview.model.JoinRequest;
import org.patientview.patientview.model.JoinRequest_;
import org.patientview.repository.AbstractHibernateDAO;
import org.patientview.repository.JoinRequestDao;
import org.springframework.stereotype.Repository;

import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;
import java.util.List;

@Repository(value = "joinRequestDao")
public class JoinRequestDaoImpl extends AbstractHibernateDAO<JoinRequest> implements JoinRequestDao {

    @Override
    public List<JoinRequest> getJoinRequestsForUnitCodes(List<String> unitcodes) {
        CriteriaBuilder builder = getEntityManager().getCriteriaBuilder();
        CriteriaQuery<JoinRequest> criteria = builder.createQuery(JoinRequest.class);
        Root<JoinRequest> from = criteria.from(JoinRequest.class);

        Predicate unitCodePredicate = from.get(JoinRequest_.unitcode).
                in(unitcodes.toArray(new String[unitcodes.size()]));

        criteria.where(unitCodePredicate);

        criteria.orderBy(builder.desc(from.get(JoinRequest_.dateOfRequest)));

        return getEntityManager().createQuery(criteria).getResultList();
    }

    @Override
    public List<JoinRequest> getJoinRequestsForUnitCodes(List<String> unitcodes, Boolean isComplete) {
        CriteriaBuilder builder = getEntityManager().getCriteriaBuilder();
        CriteriaQuery<JoinRequest> criteria = builder.createQuery(JoinRequest.class);
        Root<JoinRequest> from = criteria.from(JoinRequest.class);

        Predicate unitCodePredicate = from.get(JoinRequest_.unitcode).
                in(unitcodes.toArray(new String[unitcodes.size()]));
        Predicate isCompletePredicate = builder.equal(from.get(JoinRequest_.isComplete), isComplete);

        Predicate fullPredicate = builder.and(isCompletePredicate, unitCodePredicate);

        criteria.where(fullPredicate);

        criteria.orderBy(builder.desc(from.get(JoinRequest_.dateOfRequest)));

        return getEntityManager().createQuery(criteria).getResultList();
    }

    @Override
    public List<JoinRequest> getAll(Boolean isCompleted) {
        CriteriaBuilder builder = getEntityManager().getCriteriaBuilder();
        CriteriaQuery<JoinRequest> criteria = builder.createQuery(JoinRequest.class);
        Root<JoinRequest> from = criteria.from(JoinRequest.class);

        criteria.where(builder.equal(from.get(JoinRequest_.isComplete), isCompleted));

        criteria.orderBy(builder.desc(from.get(JoinRequest_.dateOfRequest)));

        return getEntityManager().createQuery(criteria).getResultList();
    }

}