/**
    * This file Copyright (c) 2014-2017 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.parameters;
  
  import info.magnolia.context.MgnlContext;
  import info.magnolia.link.LinkUtil;
  import info.magnolia.repository.RepositoryConstants;
  import info.magnolia.ui.api.i18n.I18NAuthoringSupport;
  import info.magnolia.ui.contentapp.detail.DetailLocation;
  import info.magnolia.ui.contentapp.detail.DetailView;
  import info.magnolia.ui.vaadin.editor.gwt.shared.PlatformType;
  import info.magnolia.ui.vaadin.gwt.client.shared.AbstractElement;
  import info.magnolia.ui.vaadin.gwt.client.shared.PageEditorParameters;
  import info.magnolia.ui.vaadin.gwt.client.shared.PageElement;
  
  import java.util.Locale;
  
  import javax.inject.Inject;
  import javax.jcr.Node;
  import javax.jcr.RepositoryException;
  
  import org.apache.commons.lang3.StringUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Default implementation of {@link PageEditorStatus}.
   */
  public class DefaultPageEditorStatus implements PageEditorStatus {
  
      private static final Logger log = LoggerFactory.getLogger(DefaultPageEditorStatus.class);
  
      private final I18NAuthoringSupport i18NAuthoringSupport;
      private Locale locale;
      private String version;
      private String nodePath;
      private DetailView.ViewType viewType;
      private PlatformType platFormType = PlatformType.DESKTOP;
      private AbstractElement selectedElement;
  
      @Inject
      public DefaultPageEditorStatus(I18NAuthoringSupport i18NAuthoringSupport) {
          this.i18NAuthoringSupport = i18NAuthoringSupport;
      }
  
      @Override
      public void updateStatusFromLocation(DetailLocation location) {
          this.nodePath = location.getNodePath();
          this.version = location.getVersion();
          this.viewType = location.getViewType();
          this.selectedElement = null;
      }
  
      @Override
      public boolean isLocationChanged(DetailLocation location) {
          DetailView.ViewType viewType = location.getViewType();
          String path = location.getNodePath();
  
          if ((path.equals(nodePath) && DetailView.ViewType.VIEW.equals(viewType) == isPreview())
                  && (location.getVersion() == null ? version == null : location.getVersion().equals(version))) {
              return false;
          }
          return true;
      }
  
      @Override
      public String getNodePath() {
          return nodePath;
     }
 
     @Override
     public PlatformType getPlatformType() {
         return platFormType;
     }
 
     @Override
     public Locale getLocale() {
         return locale;
     }
 
     @Override
     public String getVersion() {
         return version;
     }
 
     @Override
     public boolean isPreview() {
         return DetailView.ViewType.VIEW.equals(viewType);
     }
 
     @Override
     public AbstractElement getSelectedElement() {
         return selectedElement;
     }
 
     @Override
     public void setNodePath(String nodePath) {
         this.nodePath = nodePath;
     }
 
     @Override
     public void setPlatformType(PlatformType platform) {
         this.platFormType = platform;
     }
 
     @Override
     public void setLocale(Locale locale) {
         this.locale = locale;
     }
 
     @Override
     public void setSelectedElement(AbstractElement element) {
         this.selectedElement = element;
     }
 
     @Override
     public PageEditorParameters getParameters() {
         PageEditorParameters parameters = new PageEditorParameters();
         parameters.setContextPath(MgnlContext.getContextPath());
         parameters.setNodePath(nodePath);
         parameters.setPlatformType(platFormType);
         parameters.setPreview(isPreview());
 
         // Ideally we would pass the PageElement as well, but that would need more changes on the client-side, as 'null'
         // currently resolves to the PageElement.
         AbstractElement element = selectedElement instanceof PageElement ? null : selectedElement;
         parameters.setSelectedElement(element);
 
         String uri = createUri(nodePath, isPreview(), version, platFormType, locale);
         parameters.setUrl(uri);
         return parameters;
     }
 
     protected String createUri(String nodePath, boolean isPreview, String version, PlatformType platformType, Locale locale) {
         String uri = "";
         try {
             Node node = MgnlContext.getJCRSession(RepositoryConstants.WEBSITE).getNode(nodePath);
             uri = i18NAuthoringSupport.createI18NURI(node, locale);
             StringBuffer sb = new StringBuffer(uri);
 
 
             LinkUtil.addParameter(sb, PREVIEW_PARAMETER, Boolean.toString(isPreview));
 
             LinkUtil.addParameter(sb, CHANNEL_PARAMETER, platformType.getId());
 
             if (StringUtils.isNotEmpty(version)) {
                 LinkUtil.addParameter(sb, VERSION_PARAMETER, version);
             }
             uri = sb.toString();
 
         } catch (RepositoryException e) {
             log.error("Could not get page node from location object.", e);
         }
         return uri;
     }
 }