/*
 *
 * Copyright (c) 2013 - 2017 Lijun Liao
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License version 3
 * as published by the Free Software Foundation with the addition of the
 * following permission added to Section 15 as permitted in Section 7(a):
 *
 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
 * THE AUTHOR LIJUN LIAO. LIJUN LIAO DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
 * OF THIRD PARTY RIGHTS.
 *
 * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License.
 *
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial activities involving the XiPKI software without
 * disclosing the source code of your own applications.
 *
 * For more information, please contact Lijun Liao at this
 * address: lijun.liao@gmail.com
 */

package org.xipki.pki.ca.dbtool.port.ocsp;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Properties;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import javax.xml.validation.Schema;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.xipki.commons.common.util.IoUtil;
import org.xipki.commons.common.util.ParamUtil;
import org.xipki.commons.common.util.StringUtil;
import org.xipki.commons.datasource.DataSourceFactory;
import org.xipki.commons.datasource.DataSourceWrapper;
import org.xipki.commons.datasource.springframework.dao.DataAccessException;
import org.xipki.commons.password.PasswordResolver;
import org.xipki.commons.password.PasswordResolverException;
import org.xipki.pki.ca.dbtool.jaxb.ocsp.ObjectFactory;
import org.xipki.pki.ca.dbtool.port.DbPortWorker;
import org.xipki.pki.ca.dbtool.port.DbPorter;

/**
 * @author Lijun Liao
 * @since 2.0.0
 */

public class OcspDbExportWorker extends DbPortWorker {

    private static final Logger LOG = LoggerFactory.getLogger(OcspDbImportWorker.class);

    private final DataSourceWrapper datasource;

    private final Marshaller marshaller;

    private final Unmarshaller unmarshaller;

    private final String destFolder;

    private final boolean resume;

    private final int numCertsInBundle;

    private final int numCertsPerSelect;

    private final boolean evaluateOnly;

    public OcspDbExportWorker(final DataSourceFactory datasourceFactory,
            final PasswordResolver passwordResolver, final String dbConfFile,
            final String destFolder, final boolean resume, final int numCertsInBundle,
            final int numCertsPerSelect, final boolean evaluateOnly)
            throws DataAccessException, PasswordResolverException, IOException, JAXBException {
        ParamUtil.requireNonNull("datasourceFactory", datasourceFactory);
        ParamUtil.requireNonNull("dbConfFile", dbConfFile);
        this.destFolder = ParamUtil.requireNonNull(destFolder, destFolder);

        Properties props = DbPorter.getDbConfProperties(
                new FileInputStream(IoUtil.expandFilepath(dbConfFile)));
        this.datasource = datasourceFactory.createDataSource("ds-" + dbConfFile, props,
                passwordResolver);

        JAXBContext jaxbContext = JAXBContext.newInstance(ObjectFactory.class);
        marshaller = jaxbContext.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);

        Schema schema = DbPorter.retrieveSchema("/xsd/dbi-ocsp.xsd");
        marshaller.setSchema(schema);

        unmarshaller = jaxbContext.createUnmarshaller();
        unmarshaller.setSchema(schema);
        this.evaluateOnly = evaluateOnly;

        File file = new File(destFolder);
        if (!file.exists()) {
            file.mkdirs();
        } else {
            if (!file.isDirectory()) {
                throw new IOException(destFolder + " is not a folder");
            }

            if (!file.canWrite()) {
                throw new IOException(destFolder + " is not writable");
            }
        }

        if (!resume) {
            String[] children = file.list();
            if (children != null && children.length > 0) {
                throw new IOException(destFolder + " is not empty");
            }
        }
        this.resume = resume;
        this.numCertsInBundle = numCertsInBundle;
        this.numCertsPerSelect = numCertsPerSelect;
    } // constructor

    @Override
    public void doRun() throws Exception {
        long start = System.currentTimeMillis();
        try {
            // CertStore
            OcspCertStoreDbExporter certStoreExporter = new OcspCertStoreDbExporter(datasource,
                    marshaller, unmarshaller, destFolder, numCertsInBundle, numCertsPerSelect,
                    resume, stopMe, evaluateOnly);
            certStoreExporter.export();
            certStoreExporter.shutdown();
        } finally {
            try {
                datasource.shutdown();
            } catch (Throwable th) {
                LOG.error("datasource.shutdown()", th);
            }
            long end = System.currentTimeMillis();
            System.out.println("finished in " + StringUtil.formatTime((end - start) / 1000, false));
        }
    }

}