/**
    * This file Copyright (c) 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.admincentral.findbar.operation;
  
  import static info.magnolia.periscope.operation.OperationResult.successfulResult;
  
  import info.magnolia.admincentral.ViewportLayout;
  import info.magnolia.context.MgnlContext;
  import info.magnolia.periscope.operation.Operation;
  import info.magnolia.periscope.operation.OperationResult;
  import info.magnolia.periscope.operation.request.AppNavigationRequest;
  import info.magnolia.ui.api.app.AppDescriptor;
  import info.magnolia.ui.api.app.launcherlayout.AppLauncherGroupEntry;
  import info.magnolia.ui.api.app.launcherlayout.AppLauncherLayout;
  import info.magnolia.ui.api.app.launcherlayout.AppLauncherLayoutManager;
  import info.magnolia.ui.api.ioc.AdmincentralScoped;
  import info.magnolia.ui.api.location.DefaultLocation;
  import info.magnolia.ui.api.location.Location;
  import info.magnolia.ui.api.location.LocationController;
  
  import java.util.Optional;
  
  import javax.inject.Inject;
  
  import org.apache.commons.lang3.StringUtils;
  
  /**
   * Internal navigator to open some app.
   */
  @AdmincentralScoped
  public class AppNavigationOperation implements Operation<AppNavigationRequest> {
  
      private final LocationController locationController;
      private final ViewportLayout viewportLayout;
      private AppLauncherLayoutManager appLauncherLayoutManager;
  
      @Inject
      public AppNavigationOperation(LocationController locationController, ViewportLayout viewportLayout, AppLauncherLayoutManager appLauncherLayoutManager) {
          this.locationController = locationController;
          this.viewportLayout = viewportLayout;
          this.appLauncherLayoutManager = appLauncherLayoutManager;
      }
  
      @Override
      public OperationResult execute(AppNavigationRequest request) {
          AppLauncherLayout userLayout = appLauncherLayoutManager.getLayoutForUser(MgnlContext.getUser());
  
          Optional<AppDescriptor> appDescriptor = userLayout.getGroups().stream()
                  .flatMap(group -> group.getApps().stream())
                  .map(AppLauncherGroupEntry::getAppDescriptor)
                  .filter(descriptor -> StringUtils.containsIgnoreCase(descriptor.getLabel(), request.getApp())
                          || StringUtils.containsIgnoreCase(descriptor.getName(), request.getApp()))
                  .findFirst();
  
          if (!appDescriptor.isPresent()) {
              return new OperationResult(false, "Request app could not be found.");
          }
  
          DefaultLocation appLocation = new DefaultLocation(Location.LOCATION_TYPE_APP, appDescriptor.get().getName());
  
          // if target app is already "open", simply show app (and hide find bar)
          if (request.getApp().equals(locationController.getWhere().getAppName())) {
              viewportLayout.showApp(locationController.getWhere().getAppName());
              return successfulResult();
          }
  
          locationController.goTo(appLocation);
          return successfulResult();
     }
 }