/**
 * This file Copyright (c) 2010-2012 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.cms.filters;

import javax.servlet.http.HttpServletRequest;
import java.util.ArrayList;
import java.util.Collection;
import java.util.regex.Pattern;


/**
 * A basic implementation which uses a request attribute to mark a request to a web container
 * resource.
 * @version $Id$
 *
 */
public class WebContainerResourcesImpl implements WebContainerResources {

    /**
     * A request can be marked as requesting a web container resource by adding this attribute to the request.
     */
    public static final String WEB_CONTAINER_RESOURCE_MARKER_ATTRIBUTE = WebContainerResources.class.getName();

    private Mapping mapping = new Mapping();

    @Override
    public boolean isWebContainerResource(HttpServletRequest request) {
        boolean markerAttribute = request.getAttribute(WebContainerResourcesImpl.WEB_CONTAINER_RESOURCE_MARKER_ATTRIBUTE) != null;
        return markerAttribute || mapping.match(request).isMatching();
    }

    public Collection<String> getMappings() {
        ArrayList<String> result = new ArrayList<String>();
        for (Pattern pattern : mapping.getMappings()) {
            result.add(pattern.pattern());
        }
        return result;
    }

    public void setMappings(Collection<String> mappings) {
        for (String mapping : mappings) {
            this.mapping.addMapping(mapping);
        }
    }

    public void addMapping(String mapping){
        this.mapping.addMapping(mapping);
    }
}