/*
 *  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.base.XMLDBException;

/**
 * an ant task to list groups
 *
 * @author peter.klotz@blue-elephant-systems.com
 */
public class ListGroupsTask extends UserTask {

    private String outputproperty = null;
    private String separator = ",";

    /* (non-Javadoc)
     * @see org.apache.tools.ant.Task#execute()
     */
    public void execute() throws BuildException {
        super.execute();
        try {
            log("Listing all groups", Project.MSG_DEBUG);
            String[] groups = service.getGroups();
            if (groups != null) {

                boolean isFirst=true;
                StringBuilder buffer = new StringBuilder();
                for (String group : groups) {

                    // only insert separator for 2nd or later item
                    if(isFirst){
                        isFirst=false;
                    } else {
                        buffer.append(separator);
                    }

                    buffer.append(group);

                }

                if (buffer.length() > 0) {
                    log("Setting output property " + outputproperty + " to " + buffer.toString(), Project.MSG_DEBUG);
                    getProject().setNewProperty(outputproperty, buffer.toString());
                }
            }

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

    public void setOutputproperty(String outputproperty) {
        this.outputproperty = outputproperty;
    }

    public void setSeparator(String separator) {
        this.separator = separator;
    }
}