/*
    * Copyright (c) 2002-2021, City of 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.plugins.newsletter.service;
  
  import fr.paris.lutece.plugins.newsletter.business.SendingNewsLetter;
  import fr.paris.lutece.plugins.newsletter.business.SendingNewsLetterHome;
  import fr.paris.lutece.plugins.newsletter.util.NewsLetterConstants;
  import fr.paris.lutece.portal.service.message.SiteMessage;
  import fr.paris.lutece.portal.service.message.SiteMessageException;
  import fr.paris.lutece.portal.service.message.SiteMessageService;
  import fr.paris.lutece.portal.service.plugin.Plugin;
  import fr.paris.lutece.portal.service.plugin.PluginService;
  import fr.paris.lutece.portal.service.template.AppTemplateService;
  import fr.paris.lutece.portal.service.util.AppPathService;
  import fr.paris.lutece.util.html.HtmlTemplate;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import javax.servlet.http.HttpServletRequest;
  
  import org.apache.commons.lang3.StringUtils;
  
  import static fr.paris.lutece.portal.service.admin.AdminUserService.getLocale;
  
  /**
   * The service that renders the archived newsletters
   */
  public final class NewsLetterArchiveService
  {
      private static final String REGEX_ID = "^[\\d]+$";
      private static final String TEMPLATE_VIEW_NEWSLETTER_ARCHIVE = "skin/plugins/newsletter/page_newsletter_archive.html";
      private static NewsLetterArchiveServiceewsLetterArchiveService.html#NewsLetterArchiveService">NewsLetterArchiveService _singleton = new NewsLetterArchiveService( );
  
      /**
       * Constructor
       */
      private NewsLetterArchiveService( )
      {
          if ( _singleton == null )
          {
              _singleton = this;
          }
      }
  
      /**
       * Fetches the instance of the class
       * 
       * @return The singleton
       */
      public static NewsLetterArchiveService getInstance( )
      {
          return _singleton;
      }
  
      /**
       * Returns the Newsletter archive XPage content depending on the request parameters and the current mode.
       * 
       * @return The page content.
       * @param request
       *            The HTTP request.
       * @throws SiteMessageException
       *             If parameters are not correct
       */
      public String getShowArchivePage( HttpServletRequest request ) throws SiteMessageException
      {
          Plugin plugin = PluginService.getPlugin( NewsletterPlugin.PLUGIN_NAME );
          String strSendingId = request.getParameter( NewsLetterConstants.PARAMETER_SENDING_ID );
         String strBaseUrl = AppPathService.getBaseUrl( request );
 
         if ( ( strSendingId == null ) || !strSendingId.matches( REGEX_ID ) )
         {
             SiteMessageService.setMessage( request, NewsLetterConstants.PROPERTY_NO_NEWSLETTER_CHOSEN_TITLE_MESSAGE, SiteMessage.TYPE_ERROR );
             return StringUtils.EMPTY;
         }
 
         int nSendingId = Integer.parseInt( strSendingId );
         SendingNewsLetter sending = SendingNewsLetterHome.findByPrimaryKey( nSendingId, plugin );
 
         if ( ( sending == null ) || StringUtils.isEmpty( sending.getHtml( ) ) )
         {
             SiteMessageService.setMessage( request, NewsLetterConstants.PROPERTY_NO_NEWSLETTER_CHOSEN_TITLE_MESSAGE, SiteMessage.TYPE_ERROR );
             return StringUtils.EMPTY;
         }
 
         Map<String, Object> model = new HashMap<String, Object>( );
         model.put( NewsLetterConstants.MARK_SENDING, sending );
 
         HtmlTemplate template = AppTemplateService.getTemplate( TEMPLATE_VIEW_NEWSLETTER_ARCHIVE, getLocale( request ), model );
         template.substitute( NewsLetterConstants.WEBAPP_PATH_FOR_LINKSERVICE, strBaseUrl );
 
         return template.getHtml( );
     }
 }