/*
    * Copyright (c) 2002-2014, Mairie de Paris
    * All rights reserved.
    *
    * Redistribution and use in source and binary forms, with or without
    * modification, are permitted provided that the following conditions
    * are met:
    *
    *  1. Redistributions of source code must retain the above copyright notice
   *     and the following disclaimer.
   *
   *  2. Redistributions in binary form must reproduce the above copyright notice
   *     and the following disclaimer in the documentation and/or other materials
   *     provided with the distribution.
   *
   *  3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
   *     contributors may be used to endorse or promote products derived from
   *     this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   *
   * License 1.0
   */
  package fr.paris.lutece.portal.web.xpages;
  
  import fr.paris.lutece.portal.business.XmlContent;
  import fr.paris.lutece.portal.business.page.Page;
  import fr.paris.lutece.portal.business.page.PageHome;
  import fr.paris.lutece.portal.business.portalcomponent.PortalComponentHome;
  import fr.paris.lutece.portal.business.style.ModeHome;
  import fr.paris.lutece.portal.business.stylesheet.StyleSheet;
  import fr.paris.lutece.portal.service.html.XmlTransformerService;
  import fr.paris.lutece.portal.service.i18n.I18nService;
  import fr.paris.lutece.portal.service.plugin.Plugin;
  import fr.paris.lutece.portal.service.portal.PortalService;
  import fr.paris.lutece.portal.service.security.LuteceUser;
  import fr.paris.lutece.portal.service.security.SecurityService;
  import fr.paris.lutece.portal.service.util.AppPathService;
  import fr.paris.lutece.portal.web.admin.AdminPageJspBean;
  import fr.paris.lutece.util.xml.XmlUtil;
  
  import org.apache.commons.lang.StringUtils;
  
  import java.util.Arrays;
  import java.util.HashMap;
  import java.util.Locale;
  import java.util.Map;
  import java.util.Properties;
  
  import javax.servlet.http.HttpServletRequest;
  
  
  /**
   * This class provides the map of the pages on the site
   */
  public class SiteMapApp implements XPageApplication
  {
      /**
       * Serial version UID
       */
      private static final long serialVersionUID = 1799476496018552101L;
      private static final int PORTAL_COMPONENT_SITE_MAP_ID = 6;
      private static final int MODE_NORMAL = 0;
      private static final int MODE_ADMIN = 1;
      private static final String PARAMETER_SITE_PATH = "site-path";
      private static final String MARKER_TARGET = "target";
      private static final String TARGET_TOP = "target='_top'";
      private static final String PROPERTY_SERVICE_NAME = "portal.site.serviceName.siteMapService";
      private static final String PROPERTY_PATH_LABEL = "portal.site.site_map.pathLabel";
      private static final String PROPERTY_PAGE_TITLE = "portal.site.site_map.pageTitle";
  
      /**
       * Creates a new SiteMapPage object
       */
      public SiteMapApp(  )
      {
      }
  
      /**
       * Returns the localized service name
       * @param locale The locale
       * @return The localized service name
       */
      public String getName( Locale locale )
      {
          return I18nService.getLocalizedString( PROPERTY_SERVICE_NAME, locale );
      }
  
      /**
      * Build or get in the cache the page which contains the site map depending
      * on the mode
      *
      * @param request The Http request
      * @param nMode The selected mode
      * @param plugin The plugin
      * @return The content of the site map
      */
     @Override
     public XPage getPage( HttpServletRequest request, int nMode, Plugin plugin )
     {
         XPage page = new XPage(  );
         String strKey = getKey( nMode, request );
 
         Locale locale = request.getLocale(  );
 
         SiteMapCacheService siteMapCacheService = SiteMapCacheService.getInstance(  );
 
         // Check the key in the cache
         String strCachedPage = siteMapCacheService.isCacheEnable(  )
             ? (String) siteMapCacheService.getFromCache( strKey ) : null;
 
         if ( strCachedPage == null )
         {
             // Build the HTML document
             String strPage = buildPageContent( nMode, request );
 
             // Add it to the cache
             if ( siteMapCacheService.isCacheEnable(  ) )
             {
                 synchronized ( strKey )
                 {
                     siteMapCacheService.putInCache( strKey, strPage );
                 }
             }
 
             page.setPathLabel( I18nService.getLocalizedString( PROPERTY_PATH_LABEL, locale ) );
             page.setTitle( I18nService.getLocalizedString( PROPERTY_PAGE_TITLE, locale ) );
             page.setContent( strPage );
 
             return page;
         }
 
         // The document exist in the cache
         page.setPathLabel( I18nService.getLocalizedString( PROPERTY_PATH_LABEL, locale ) );
         page.setTitle( I18nService.getLocalizedString( PROPERTY_PAGE_TITLE, locale ) );
         page.setContent( strCachedPage );
 
         return page;
     }
 
     /**
      * Gets the cache key
      * @param nMode The mode
      * @param request The HTTP request
      * @return The key
      */
     private String getKey( int nMode, HttpServletRequest request )
     {
         String strRoles = "-";
 
         if ( SecurityService.isAuthenticationEnable(  ) )
         {
             LuteceUser user = SecurityService.getInstance(  ).getRegisteredUser( request );
 
             if ( ( user != null ) && ( user.getRoles(  ) != null ) )
             {
                 String[] roles = user.getRoles(  );
                 Arrays.sort( roles );
                 strRoles = StringUtils.join( roles, ',' );
             }
         }
 
         return "[m:" + nMode + "][roles:" + strRoles + "]";
     }
 
     /**
      * Build an XML document containing the arborescence of the site pages and
      * transform it with the stylesheet
      * combined with the mode
      * @param nMode The selected mode
      * @param request The HttpServletRequest
      * @return The content of the site map
      */
     private String buildPageContent( int nMode, HttpServletRequest request )
     {
         StringBuffer strArborescenceXml = new StringBuffer(  );
         strArborescenceXml.append( XmlUtil.getXmlHeader(  ) );
 
         int nLevel = 0;
         findPages( strArborescenceXml, PortalService.getRootPageId(  ), nLevel, request );
 
         // Added in v1.3
         // Use the same stylesheet for normal or admin mode
         StyleSheet xslSource;
 
         switch ( nMode )
         {
             case MODE_NORMAL:
             case MODE_ADMIN:
                 xslSource = PortalComponentHome.getXsl( PORTAL_COMPONENT_SITE_MAP_ID, MODE_NORMAL );
 
                 break;
 
             default:
                 xslSource = PortalComponentHome.getXsl( PORTAL_COMPONENT_SITE_MAP_ID, nMode );
 
                 break;
         }
 
         // Added in v1.3
         // Add a path param for choose url to use in admin or normal mode
         Map<String, String> mapParamRequest = new HashMap<String, String>(  );
 
         if ( nMode != MODE_ADMIN )
         {
             mapParamRequest.put( PARAMETER_SITE_PATH, AppPathService.getPortalUrl(  ) );
         }
         else
         {
             mapParamRequest.put( PARAMETER_SITE_PATH, AppPathService.getAdminPortalUrl(  ) );
             mapParamRequest.put( MARKER_TARGET, TARGET_TOP );
         }
 
         Properties outputProperties = ModeHome.getOuputXslProperties( nMode );
 
         XmlTransformerService xmlTransformerService = new XmlTransformerService(  );
 
         return xmlTransformerService.transformBySourceWithXslCache( strArborescenceXml.toString(  ), xslSource,
             mapParamRequest, outputProperties );
     }
 
     /**
      * Build recursively the XML document containing the arborescence of the
      * site pages
      * @param strXmlArborescence The buffer in which adding the current page of
      *            the arborescence
      * @param nPageId The current page of the recursive course
      * @param nLevel The depth level of the page in the arborescence
      * @param request The HttpServletRequest
      */
     private void findPages( StringBuffer strXmlArborescence, int nPageId, int nLevel, HttpServletRequest request )
     {
         Page page = PageHome.getPage( nPageId );
 
         if ( page.isVisible( request ) )
         {
             XmlUtil.beginElement( strXmlArborescence, XmlContent.TAG_PAGE );
             XmlUtil.addElement( strXmlArborescence, XmlContent.TAG_PAGE_ID, page.getId(  ) );
             XmlUtil.addElementHtml( strXmlArborescence, XmlContent.TAG_PAGE_NAME, page.getName(  ) );
             XmlUtil.addElement( strXmlArborescence, XmlContent.TAG_PAGE_DESCRIPTION, page.getDescription(  ) );
             XmlUtil.addElement( strXmlArborescence, XmlContent.TAG_PAGE_LEVEL, nLevel );
 
             AdminPageJspBean adminPage = new AdminPageJspBean(  );
 
             if ( page.getImageContent(  ) != null )
             {
                 int nImageLength = page.getImageContent(  ).length;
 
                 if ( nImageLength >= 1 )
                 {
                     String strPageId = Integer.toString( page.getId(  ) );
                     XmlUtil.addElement( strXmlArborescence, XmlContent.TAG_PAGE_IMAGE,
                         adminPage.getResourceImagePage( page, strPageId ) );
                 }
             }
 
             XmlUtil.beginElement( strXmlArborescence, XmlContent.TAG_CHILD_PAGES_LIST );
 
             for ( Page pageChild : PageHome.getChildPagesMinimalData( nPageId ) )
             {
                 findPages( strXmlArborescence, pageChild.getId(  ), nLevel + 1, request );
             }
 
             XmlUtil.endElement( strXmlArborescence, XmlContent.TAG_CHILD_PAGES_LIST );
             XmlUtil.endElement( strXmlArborescence, XmlContent.TAG_PAGE );
         }
     }
 }