/**
 * This file Copyright (c) 2003-2012 Magnolia International
 * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
 *
 *
 * This file is dual-licensed under both the Magnolia
 * Network Agreement and the GNU General Public License.
 * You may elect to use one or the other of these licenses.
 *
 * This file is distributed in the hope that it will be
 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
 * implied warranty of MERCHANTABILITY or FITNESS FOR A
 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
 * Redistribution, except as permitted by whichever of the GPL
 * or MNA you select, is prohibited.
 *
 * 1. For the GPL license (GPL), you can redistribute and/or
 * modify this file under the terms of the GNU General
 * Public License, Version 3, as published by the Free Software
 * Foundation.  You should have received a copy of the GNU
 * General Public License, Version 3 along with this program;
 * if not, write to the Free Software Foundation, Inc., 51
 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * 2. For the Magnolia Network Agreement (MNA), this file
 * and the accompanying materials are made available under the
 * terms of the MNA which accompanies this distribution, and
 * is available at http://www.magnolia-cms.com/mna.html
 *
 * Any modifications to this file must keep this entire header
 * intact.
 *
 */
package info.magnolia.module.delta;

import info.magnolia.cms.core.Content;
import info.magnolia.cms.core.HierarchyManager;
import info.magnolia.cms.core.NodeData;
import info.magnolia.cms.util.NodeDataUtil;
import info.magnolia.module.InstallContext;

import javax.jcr.RepositoryException;

import org.apache.commons.lang.StringUtils;


/**
 * Sets a new value for a property. Consider using CheckAndModifyPropertyValueTask if you want your update tasks
 * to only modify expected values.
 * @see CheckAndModifyPropertyValueTask
 *
 * @author fgiust
 * @version $Revision: $ ($Author: $)
 */
public class SetPropertyTask extends AbstractRepositoryTask {

    private final String workspaceName;

    private final String nodePath;

    private final String propertyName;

    private final String newValue;

    public SetPropertyTask(String workspaceName, String nodePath, String propertyName, String newValue) {
        this("Set " + nodePath + "/" + propertyName, workspaceName, nodePath, propertyName, newValue);
    }

    public SetPropertyTask(String taskName, String workspaceName, String nodePath, String propertyName, String newValue) {
        super(taskName, "Sets " + nodePath + "/" + propertyName + " to " + newValue + ".");
        this.workspaceName = workspaceName;
        this.nodePath = nodePath;
        this.propertyName = propertyName;
        this.newValue = newValue;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected void doExecute(InstallContext installContext) throws RepositoryException, TaskExecutionException {

        HierarchyManager hm = installContext.getHierarchyManager(workspaceName);

        Content node = hm.getContent(nodePath);

        NodeData property = NodeDataUtil.getOrCreate(node, propertyName);

        String actualValue = property.getString();
        if (!StringUtils.equals(newValue, StringUtils.trim(actualValue))) {
            property.setValue(newValue);
        }
    }
}