/*
 *  eXist Open Source Native XML Database
 *  Copyright (C) 2010 The eXist Project
 *  http://exist-db.org
 *
 *  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 2
 *  of the License, or (at your option) any later version.
 *
 *  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 Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 *  $Id$
 */
package org.exist.ant;

import java.net.URISyntaxException;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.exist.xmldb.CollectionManagementServiceImpl;
import org.exist.xmldb.XmldbURI;
import org.xmldb.api.DatabaseManager;
import org.xmldb.api.base.Collection;
import org.xmldb.api.base.Resource;
import org.xmldb.api.base.XMLDBException;

/**
 * an ant task to copy a collection or resource
 *
 * @author peter.klotz@blue-elephant-systems.com
 */
public class XMLDBCopyTask extends AbstractXMLDBTask {

    private String resource = null;
    private String collection = null;
    private String destination = null;
    private String name = null;

    /* (non-Javadoc)
     * @see org.apache.tools.ant.Task#execute()
     */
    public void execute() throws BuildException {
        if (uri == null) {
            throw new BuildException("You have to specify an XMLDB collection URI");
        }

        if (resource == null && collection == null) {
            throw new BuildException("Missing parameter: either resource or collection should be specified");
        }

        registerDatabase();
        try {
            log("Get base collection: " + uri, Project.MSG_DEBUG);
            Collection base = DatabaseManager.getCollection(uri, user, password);

            if (base == null) {
                String msg = "Collection " + uri + " could not be found.";
                if (failonerror) {
                    throw new BuildException(msg);
                } else {
                    log(msg, Project.MSG_ERR);
                }

            } else {
                log("Create collection management service for collection " + base.getName(), Project.MSG_DEBUG);
                CollectionManagementServiceImpl service = (CollectionManagementServiceImpl) base.getService("CollectionManagementService", "1.0");
                if (resource != null) {
                    log("Copying resource: " + resource, Project.MSG_INFO);
                    Resource res = base.getResource(resource);
                    if (res == null) {
                        String msg = "Resource " + resource + " not found.";
                        if (failonerror) {
                            throw new BuildException(msg);
                        } else {
                            log(msg, Project.MSG_ERR);
                        }
                    } else {
                        //XmldbURI resource = XmldbURI.create(resource);
                        service.copyResource(XmldbURI.xmldbUriFor(resource),
                                XmldbURI.xmldbUriFor(destination),
                                XmldbURI.xmldbUriFor(name));
                    }
                    
                } else {
                    log("Copying collection: " + collection, Project.MSG_INFO);
                    service.copy(XmldbURI.xmldbUriFor(collection),
                            XmldbURI.xmldbUriFor(destination),
                            XmldbURI.xmldbUriFor(name));
                }
            }
        } catch (XMLDBException e) {
            String msg = "XMLDB exception during copy: " + e.getMessage();
            if (failonerror) {
                throw new BuildException(msg, e);
            } else {
                log(msg, e, Project.MSG_ERR);
            }

        } catch (URISyntaxException e) {
            String msg = "URI syntax exception: " + e.getMessage();
            if (failonerror) {
                throw new BuildException(msg, e);
            } else {
                log(msg, e, Project.MSG_ERR);
            }
        }
    }

    /**
     * @param collection
     */
    public void setCollection(String collection) {
        this.collection = collection;
    }

    /**
     * @param resource
     */
    public void setResource(String resource) {
        this.resource = resource;
    }

    public void setDestination(String destination) {
        this.destination = destination;
    }

    public void setName(String name) {
        this.name = name;
    }
}