/**
 * Copyright (C) 2012-2013 Selventa, Inc.
 *
 * This file is part of the OpenBEL Framework.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * The OpenBEL Framework 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 Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with the OpenBEL Framework. If not, see <http://www.gnu.org/licenses/>.
 *
 * Additional Terms under LGPL v3:
 *
 * This license does not authorize you and you are prohibited from using the
 * name, trademarks, service marks, logos or similar indicia of Selventa, Inc.,
 * or, in the discretion of other licensors or authors of the program, the
 * name, trademarks, service marks, logos or similar indicia of such authors or
 * licensors, in any marketing or advertising materials relating to your
 * distribution of the program or any covered product. This restriction does
 * not waive or limit your obligation to keep intact all copyright notices set
 * forth in the program as delivered to you.
 *
 * If you distribute the program in whole or in part, or any modified version
 * of the program, and you assume contractual liability to the recipient with
 * respect to the program or modified version, then you will indemnify the
 * authors and licensors of the program for any liabilities that these
 * contractual assumptions directly impose on those licensors and authors.
 */
package org.openbel.framework.core.equivalence;

import static org.openbel.framework.common.BELUtilities.asPath;
import static org.openbel.framework.common.PathConstants.EQUIVALENCE_ROOT_DIRECTORY_NAME;

import java.io.File;

import org.openbel.framework.common.model.DataFileIndex;
import org.openbel.framework.core.df.beldata.equivalence.EquivalenceHeaderProcessor;
import org.openbel.framework.core.indexer.Indexer;
import org.openbel.framework.core.indexer.IndexingFailure;

public class EquivalenceIndexerServiceImpl implements EquivalenceIndexerService {

    @Override
    public DataFileIndex indexEquivalence(String equivalenceResourceLocation,
            File rawEquivalenceFile) throws IndexingFailure {

        final File outputPath = rawEquivalenceFile.getParentFile();
        final String home = outputPath.getAbsolutePath();
        String equivalenceHomeLocation = asPath(home,
                EQUIVALENCE_ROOT_DIRECTORY_NAME);

        File equivalenceRootFile = new File(equivalenceHomeLocation);
        EquivalenceHeaderProcessor equivalenceHeaderProcessor =
                new EquivalenceHeaderProcessor();
        File equivalenceHeaderFile = equivalenceHeaderProcessor
                .processEquivalenceHeader(equivalenceResourceLocation,
                        rawEquivalenceFile, equivalenceRootFile);

        long characterStopOffset = equivalenceHeaderProcessor
                .getCharacterStopOffset();

        String equivalenceIndexLocation = asPath(
                equivalenceHeaderFile.getParent(), "equivalence.index");

        if (!new File(equivalenceIndexLocation).exists()) {
            Indexer equivalenceIndexer = new Indexer();
            equivalenceIndexer.indexEquivalenceFile(characterStopOffset,
                    rawEquivalenceFile, equivalenceIndexLocation);
        }

        return new DataFileIndex(equivalenceResourceLocation,
                equivalenceIndexLocation, equivalenceHeaderFile);
    }
}