/**
    * This file Copyright (c) 2012-2018 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.ui.framework.app;
  
  import info.magnolia.cms.security.User;
  import info.magnolia.context.Context;
  import info.magnolia.ui.api.app.launcherlayout.AppLauncherLayout;
  import info.magnolia.ui.api.app.launcherlayout.AppLauncherLayoutManager;
  import info.magnolia.ui.api.location.DefaultLocation;
  import info.magnolia.ui.api.location.Location;
  import info.magnolia.ui.api.location.LocationHistoryMapper;
  
  /**
   * LocationHistoryMapper that creates locations for all apps and shell apps.
   */
  public class DefaultLocationHistoryMapper implements LocationHistoryMapper {
  
      private final User user;
      private final AppLauncherLayoutManager appLauncherLayoutManager;
  
      public DefaultLocationHistoryMapper(final AppLauncherLayoutManager appLauncherLayoutManager, final Context context) {
          this.appLauncherLayoutManager = appLauncherLayoutManager;
          this.user = context.getUser();
      }
  
      @Override
      public Location getLocation(String fragment) {
  
          String appType = DefaultLocation.extractAppType(fragment);
          String appName = DefaultLocation.extractAppName(fragment);
          String subAppId = DefaultLocation.extractSubAppId(fragment);
          String parameter = DefaultLocation.extractParameter(fragment);
  
          if (!supported(appType, appName, subAppId, parameter)) {
              return null;
          }
  
          return new DefaultLocation(appType, appName, subAppId, parameter);
      }
  
      @Override
      public String getFragment(Location location) {
  
          if (!supported(location.getAppType(), location.getAppName(), location.getSubAppId(), location.getParameter())) {
              return null;
          }
  
          return location.toString();
      }
  
      private boolean supported(String appType, String appName, String subAppId, String parameter) {
  
          if (appType.equals(Location.LOCATION_TYPE_SHELL_APP) && (appName.equals("applauncher") || appName.equals("pulse") || appName.equals("favorite"))) {
              return true;
          }
  
          if (!appType.equals(Location.LOCATION_TYPE_APP)) {
              return false;
          }
  
          AppLauncherLayout appLauncherLayout = appLauncherLayoutManager.getLayoutForUser(user);
          return appLauncherLayout.containsApp(appName);
      }
  }