/**
    * This file Copyright (c) 2003-2012 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.module.mail.templates.impl;
  
  import info.magnolia.freemarker.FreemarkerHelper;
  import info.magnolia.module.mail.MailTemplate;
  import info.magnolia.module.mail.templates.MgnlMultipartEmail;
  
  import java.io.Reader;
  import java.io.StringReader;
  import java.io.StringWriter;
  
  import javax.mail.MessagingException;
  
  /**
   * Sends an email using a freemarker template.
   */
  public class FreemarkerEmail extends MgnlMultipartEmail {
  
      public FreemarkerEmail(MailTemplate template) {
          super(template);
      }
  
      @Override
      public void setFrom(String from) {
          try {
              from = processFreemarkerString(from);
          } catch (Exception e) {
              log.error("Couldn't set from: " + from);
          }
          super.setFrom(from);
      }
  
      @Override
      public void setSubject(String subject) throws MessagingException {
          try {
              subject = processFreemarkerString(subject);
              super.setSubject(subject);
          } catch (Exception e) {
              throw new MessagingException();
          }
  
      }
  
      @Override
      public void setToList(String list) throws Exception {
          list = processFreemarkerString(list);
          super.setToList(list);
      }
  
      @Override
      public void setBody(String body) throws Exception {
          body = processFreemarkerString(body);
          super.setBody(body);
      }
  
      @Override
      public void setBodyFromResourceFile() throws Exception {
          final StringWriter writer = new StringWriter();
          FreemarkerHelper.getInstance().render(super.getTemplate().getTemplateFile(), super.getTemplate().getParameters(), writer);
          super.setBody(writer.toString());
      }
  
      /**
       * @deprecated since 5.1. Please, use {@link #processFreemarkerString(String)} instead.
       */
      protected String proccesFreemarkerString(String text) throws Exception {
          return processFreemarkerString(text);
     }
 
     protected String processFreemarkerString(String text) throws Exception {
         Reader reader = new StringReader(text);
         final StringWriter writer = new StringWriter();
         FreemarkerHelper.getInstance().render(reader, super.getTemplate().getParameters(), writer);
         reader.close();
         return writer.toString();
     }
 
 }