/*
 * Copyright (C) 2002-2004 Red Hat Inc. All Rights Reserved.
 *
 * This library 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 2.1 of
 * the License, or (at your option) any later version.
 *
 * This library 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */
package com.arsdigita.cms;

import com.arsdigita.bebop.PageState;
import org.apache.log4j.Logger;

/**
 * <p>A central location for commonly used CMS services and their
 * accessories.</p>
 *
 * <p><b>Context.</b> {@link #getContext()} fetches the context record ({@link
 * com.arsdigita.kernel.KernelContext}) of the current thread.</p>
 *
 * @author Daniel Berrange
 * @see com.arsdigita.kernel.Kernel
 * @version $Id: CMS.java 2167 2011-06-19 21:12:12Z pboy $
 */
public abstract class CMS {

    /** Private Logger instance for debugging purpose.                        */
    private static final Logger s_log = Logger.getLogger(CMS.class);

    /** The CMS XML namespace. */
    public final static String CMS_XML_NS = "http://www.arsdigita.com/cms/1.0";

    /**
     * Constant string used as key for creating Workspace (content-center) as a
     * legacy application.
     */
    public static final String WORKSPACE_PACKAGE_KEY   = "content-center";

    /**
     * Constant string used as key for creating service package as a
     * legacy application.
     */
    public final static String SERVICE_PACKAGE_KEY = "cms-service";
    
    static final CMSContext s_initialContext = new CMSContext();

    private static final ThreadLocal s_context = new ThreadLocal() {
        @Override
        public Object initialValue() {
            return s_initialContext;
        }
    };
    private static final CMSConfig s_config = new CMSConfig();
    static {
        s_log.debug("Static initializer starting...");
        s_config.load();
        s_log.debug("Static initializer finished.");
    }


    /**
     *
     * @return
     */
    public static CMSConfig getConfig() {
        return s_config;
    }

    /**
     * Get the context record of the current thread.
     *
     * @post return != null
     */
    public static final CMSContext getContext() {
        return (CMSContext)s_context.get();
    }
    
    static final void setContext(CMSContext context) {
        s_context.set(context);
    }

    /**
     * Fetch the security manager.
     *
     * @param state The page state
     * @return The SecurityManager for the content section
     */
    public static SecurityManager getSecurityManager(PageState state) {
        ContentSection section = CMS.getContext().getContentSection();
        return new SecurityManager(section);
    }

}