/**
    * 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.search.apps;
  
  import info.magnolia.periscope.operation.request.AppNavigationRequest;
  import info.magnolia.periscope.search.SearchException;
  import info.magnolia.periscope.search.SearchQuery;
  import info.magnolia.periscope.search.SearchResult;
  import info.magnolia.periscope.search.SearchResultSupplier;
  import info.magnolia.periscope.search.SearchResultSupplierDefinition;
  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.app.registry.AppDescriptorRegistry;
  
  import java.util.stream.Stream;
  
  import org.apache.commons.lang3.StringUtils;
  
  /**
   * A {@link SearchResultSupplier Search result supplier} that looks for a matching app name in the
   * {@link AppDescriptorRegistry App descriptor registry}.
   */
  public class AppSearchResultSupplier implements SearchResultSupplier {
  
      public static final String APPS_SUPPLIER_NAME = "apps";
  
      private final SearchResultSupplierDefinition definition;
      private final AppLauncherLayoutManager appLauncherLayoutManager;
  
      public AppSearchResultSupplier(AppSearchResultSupplierDefinition definition, AppLauncherLayoutManager appLauncherLayoutManager) {
          this.definition = definition;
          this.appLauncherLayoutManager = appLauncherLayoutManager;
      }
  
      @Override
      public String getName() {
          return APPS_SUPPLIER_NAME;
      }
  
      @Override
      public Stream<SearchResult> search(SearchQuery query) throws SearchException {
          AppLauncherLayout userLayout = appLauncherLayoutManager.getLayoutForUser(query.getCurrentUser());
  
          return userLayout.getGroups().stream()
                  .flatMap(group -> group.getApps().stream())
                  .map(AppLauncherGroupEntry::getAppDescriptor)
                  .filter(descriptor -> StringUtils.containsIgnoreCase(descriptor.getLabel(), StringUtils.substringBeforeLast(query.getQuery(), " app"))
                          || StringUtils.containsIgnoreCase(descriptor.getName(), StringUtils.substringBeforeLast(query.getQuery(), " app")))
                  .map(descriptor -> SearchResult.builder()
                          .title(descriptor.getLabel())
                          .operationRequest(new AppNavigationRequest(descriptor.getName()))
                          .type(StringUtils.defaultIfBlank(descriptor.getIcon(), "icon-app"))
                          .build()
                  )
                  .limit(definition.getResultLimit());
      }
  }