/**
    * This file Copyright (c) 2003-2018 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.context;
  
  import info.magnolia.cms.i18n.MessagesManager;
  
  import java.lang.ref.WeakReference;
  import java.util.Locale;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  
  /**
   * This is the system context using the not secured HierarchyManagers. The context uses only one scope.
   */
  public abstract class AbstractSystemContext extends AbstractContext implements SystemContext {
  
      private static final Logger log = LoggerFactory.getLogger(AbstractSystemContext.class);
  
      protected static ThreadLocal<JCRSessionStrategy> repositoryStrategyThreadLocal = new ThreadLocal<JCRSessionStrategy>();
  
      protected static ThreadLocal<WeakReference<Context>> originalContextThreadLocal = new ThreadLocal<>();
  
      /**
       * DON'T CREATE AN OBJECT. The SystemContext is set by magnolia system itself. Init the scopes
       */
      public AbstractSystemContext() {
          setAttributeStrategy(new MapAttributeStrategy());
      }
  
      @Override
      public void setAttribute(String name, Object value, int scope) {
          if (scope == Context.LOCAL_SCOPE || scope == Context.SESSION_SCOPE) {
              log.warn("you should not set an attribute in the system context in request or session scope. You are setting {}={}", name, value);
          }
          super.setAttribute(name, value, scope);
      }
  
      public void removeAttribute(String name, Object value, int scope) {
          if (scope == Context.LOCAL_SCOPE || scope == Context.SESSION_SCOPE) {
              log.warn("you should not manipulate an attribute in the system context in request or session scope. You are setting {}={}", name, value);
          }
          super.removeAttribute(name, scope);
      }
  
      // TODO - See MAGNOLIA-2531
      @Override
      public Locale getLocale() {
          return MessagesManager.getInstance().getDefaultLocale();
      }
  
      @Override
      public Context getOriginalContext() {
          WeakReference<Context> ref = originalContextThreadLocal.get();
          return ref == null ? null : ref.get();
      }
  
      public void setOriginalContext(Context ctx) {
          if (ctx == null) {
              originalContextThreadLocal.set(null);
          } else {
              originalContextThreadLocal.set(new WeakReference<Context>(ctx));
          }
      }
  }