/**
    * This file Copyright (c) 2014-2018 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.pages.app.editor.statusbar;
  
  import info.magnolia.pages.app.editor.PagesEditorSubAppDescriptor;
  import info.magnolia.pages.app.editor.extension.Extension;
  import info.magnolia.pages.app.editor.extension.ExtensionFactory;
  import info.magnolia.pages.app.editor.extension.definition.ExtensionDefinition;
  import info.magnolia.pages.app.editor.pagebar.definition.PageBarDefinition;
  import info.magnolia.pages.app.editor.statusbar.definition.StatusBarDefinition;
  import info.magnolia.ui.api.app.SubAppContext;
  import info.magnolia.ui.api.app.SubAppDescriptor;
  import info.magnolia.ui.api.view.View;
  import info.magnolia.ui.contentapp.detail.DetailLocation;
  import info.magnolia.ui.contentapp.detail.DetailView;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  
  import javax.inject.Inject;
  
  import org.apache.commons.collections4.MapUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Implements {@link StatusBarPresenter} presenter.
   */
  public class StatusBarPresenterImpl implements StatusBarPresenter, StatusBarView.Listener {
  
      private static final Logger log = LoggerFactory.getLogger(StatusBarPresenterImpl.class);
  
      private final StatusBarView view;
      private final SubAppContext subAppContext;
      private final ExtensionFactory extensionFactory;
  
      private List<Extension> extensions = new ArrayList<>();
  
      @Inject
      public StatusBarPresenterImpl(StatusBarView view, SubAppContext subAppContext, ExtensionFactory extensionFactory) {
          this.view = view;
          this.subAppContext = subAppContext;
          this.extensionFactory = extensionFactory;
      }
  
      @Override
      public StatusBarView start(DetailLocation location) {
          extensions = createExtensionsFromDefinition();
          for (Extension extension : extensions) {
              View component = extension.start(location);
              // don't interfere with our css settings
              component.asVaadinComponent().setSizeUndefined();
              component.asVaadinComponent().addStyleName("statusbar-extension");
              // the order is defined in css by using a flex container
              view.addStatusBarComponent(component);
          }
          view.setListener(this);
  
          togglePreviewMode(location);
          return view;
      }
  
      /**
       * Fetches and creates extensions both from {@link StatusBarDefinition} and deprecated {@link PageBarDefinition}.
       */
      private List<Extension> createExtensionsFromDefinition() {
          SubAppDescriptor subAppDescriptor = subAppContext.getSubAppDescriptor();
         List<Extension> extensions = new ArrayList<>();
 
         if (subAppDescriptor instanceof PagesEditorSubAppDescriptor) {
             PagesEditorSubAppDescriptor descriptor = ((PagesEditorSubAppDescriptor) subAppDescriptor);
             StatusBarDefinition statusBarDefinition = descriptor.getStatusBar();
             if (statusBarDefinition != null) {
                 Map<String, ExtensionDefinition> extensionDefinitions = statusBarDefinition.getExtensions();
                 extensions.addAll(extensionFactory.createExtensions(extensionDefinitions));
             } else {
                 log.error("No statusBar definition defined for pages detail app, no extensions will be loaded.");
             }
 
             PageBarDefinition pageBarDefinition = descriptor.getPageBar();
             if (pageBarDefinition != null && MapUtils.isNotEmpty(pageBarDefinition.getExtensions())) {
                 log.warn("As of Magnolia 6.0 PageBar has been deprecated. Please define all page editor extensions under status bar.");
                 Map<String, ExtensionDefinition> extensionDefinitions = pageBarDefinition.getExtensions();
                 extensions.addAll(extensionFactory.createExtensions(extensionDefinitions));
             }
         } else {
             log.error("Expected an instance of {} but got {}. No extensions will be loaded.", PagesEditorSubAppDescriptor.class.getSimpleName(), subAppDescriptor.getClass().getName());
         }
 
         return extensions;
     }
 
     @Override
     public void onLocationUpdate(DetailLocation location) {
         for (Extension extension : extensions) {
             extension.onLocationUpdate(location);
         }
         togglePreviewMode(location);
     }
 
     @Override
     public void deactivateExtensions() {
         for (Extension extension : extensions) {
             extension.deactivate();
         }
     }
 
     @Override
     public void stop() {
         for (Extension extension : extensions) {
             extension.stop();
         }
     }
 
     @Override
     public void setPageName(String pageName) {
         view.setPageName(pageName);
     }
 
     @Override
     public void setPageName(String caption, String nodePath) {
         String pageName = caption.toUpperCase() + "  -  " + nodePath;
         view.setPageName(pageName);
     }
 
     private void togglePreviewMode(DetailLocation location) {
         boolean isPreview = DetailView.ViewType.VIEW.equals(location.getViewType());
         view.togglePreviewMode(isPreview);
     }
 }