/**
    * This file Copyright (c) 2015-2018 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.workbench.contenttool.search;
  
  import info.magnolia.event.EventBus;
  import info.magnolia.ui.api.view.View;
  import info.magnolia.ui.workbench.WorkbenchPresenter;
  import info.magnolia.ui.workbench.contenttool.ContentToolPresenter;
  import info.magnolia.ui.workbench.event.QueryStatementChangedEvent;
  import info.magnolia.ui.workbench.event.SearchEvent;
  import info.magnolia.ui.workbench.list.ListPresenterDefinition;
  import info.magnolia.ui.workbench.search.SearchPresenterDefinition;
  
  import javax.inject.Inject;
  
  import org.apache.commons.lang3.StringUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Provides a search text-box view to the workbench. Emits {@link SearchEvent}'s.
   */
  public class SearchContentToolPresenter implements ContentToolPresenter, SearchContentToolView.Listener {
  
      private static final Logger log = LoggerFactory.getLogger(SearchContentToolPresenter.class);
  
      private EventBus eventBus;
      private SearchContentToolView view;
      private WorkbenchPresenter workbenchPresenter;
  
      @Inject
      public SearchContentToolPresenter(
              WorkbenchPresenter workbenchPresenter,
              SearchContentToolView view,
              EventBus eventBus) {
          this.view = view;
          this.eventBus = eventBus;
          this.workbenchPresenter = workbenchPresenter;
      }
  
      @Override
      public View start() {
          view.setListener(this);
  
          eventBus.addHandler(QueryStatementChangedEvent.class, new QueryStatementChangedEvent.Handler() {
              @Override
              public void onSetSearchQueryEvent(QueryStatementChangedEvent event) {
                  view.setSearchQuery(event.getQuery());
              }
          });
  
          return view;
      }
  
      @Override
      public void onSearch(String searchQuery) {
          if (workbenchPresenter.hasViewType(SearchPresenterDefinition.VIEW_TYPE)) {
              if (StringUtils.isNotBlank(searchQuery)) {
                  eventBus.fireEvent(new SearchEvent(searchQuery));
              } else {
                  // if search expression is empty switch to list view
                  workbenchPresenter.onViewTypeChanged(ListPresenterDefinition.VIEW_TYPE);
              }
          } else {
              log.warn("Workbench view triggered search although the search view type is not configured in this workbench {}", this);
          }
      }
  }