/*
 *  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 org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;

import org.xmldb.api.DatabaseManager;
import org.xmldb.api.base.Collection;
import org.xmldb.api.base.Resource;
import org.xmldb.api.base.XMLDBException;
import org.xmldb.api.modules.CollectionManagementService;

/**
 * an ant task to remove a collection or resource
 *
 * @author wolf
 *         <p/>
 *         modified by
 * @author peter.klotz@blue-elephant-systems.com
 */
public class XMLDBRemoveTask extends AbstractXMLDBTask {

    private String resource = null;
    private String collection = 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) {
                throw new BuildException("Collection " + uri + " could not be found.");
            }

            if (resource != null) {
                log("Removing 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 {
                    base.removeResource(res);
                }

            } else {
                log("Removing collection: " + collection, Project.MSG_INFO);
                CollectionManagementService service = (CollectionManagementService) base.getService("CollectionManagementService", "1.0");
                service.removeCollection(collection);
            }
            
        } catch (XMLDBException e) {
            String msg = "XMLDB exception during remove: " + 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;
    }
}