/**
    * This file Copyright (c) 2003-2014 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.admininterface.pages;
  
  import info.magnolia.cms.beans.runtime.Document;
  import info.magnolia.cms.security.AccessDeniedException;
  import info.magnolia.cms.security.Permission;
  import info.magnolia.cms.util.AlertUtil;
  import info.magnolia.importexport.DataTransporter;
  import info.magnolia.repository.RepositoryConstants;
  
  import java.text.MessageFormat;
  
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import org.apache.commons.lang.StringEscapeUtils;
  import org.apache.commons.lang.StringUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  
  
  /**
   * @author Fabrizio Giustina
   * @version $Id$
   */
  public class ImportPage extends ExportPage {
  
      /**
       * Stable serialVersionUID.
       */
      private static final long serialVersionUID = 222L;
  
      /**
       * Logger.
       */
      private static Logger log = LoggerFactory.getLogger(ImportPage.class);
  
      private Document mgnlFileImport;
  
      private String mgnlRedirect;
  
      private int mgnlUuidBehavior;
  
      /**
       * @param name
       * @param request
       * @param response
       */
      public ImportPage(String name, HttpServletRequest request, HttpServletResponse response) {
          super(name, request, response);
      }
  
      /**
       * @see info.magnolia.module.admininterface.pages.ExportPage#getCommand()
       */
      @Override
      public String getCommand() {
          if ("POST".equals(getRequest().getMethod())) {
              return "importxml"; // a post request is an import request, preserve the behaviour from the servlet
          }
          return super.getCommand();
      }
  
      /**
       * Getter for <code>mgnlFileImport</code>.
      * @return Returns the mgnlFileImport.
      */
     public Document getMgnlFileImport() {
         return this.mgnlFileImport;
     }
 
     /**
      * Setter for <code>mgnlFileImport</code>.
      * @param mgnlFileImport The mgnlFileImport to set.
      */
     public void setMgnlFileImport(Document mgnlFileImport) {
         this.mgnlFileImport = mgnlFileImport;
     }
 
     /**
      * Getter for <code>mgnlRedirect</code>.
      * @return Returns the mgnlRedirect.
      */
     public String getMgnlRedirect() {
         return this.mgnlRedirect;
     }
 
     /**
      * Setter for <code>mgnlRedirect</code>.
      * @param mgnlRedirect The mgnlRedirect to set.
      */
     public void setMgnlRedirect(String mgnlRedirect) {
         this.mgnlRedirect = mgnlRedirect;
     }
 
     /**
      * Getter for <code>mgnlUuidBehavior</code>.
      * @return Returns the mgnlUuidBehavior.
      */
     public int getMgnlUuidBehavior() {
         return this.mgnlUuidBehavior;
     }
 
     /**
      * Setter for <code>mgnlUuidBehavior</code>.
      * @param mgnlUuidBehavior The mgnlUuidBehavior to set.
      */
     public void setMgnlUuidBehavior(int mgnlUuidBehavior) {
         this.mgnlUuidBehavior = mgnlUuidBehavior;
     }
 
     /**
      * @throws Exception
      */
     public String importxml() throws Exception {
 
         if (mgnlFileImport == null) {
             AlertUtil.setMessage("Select a file to import.");
             throw new ServletException("Select a file to import.");
         }
 
         if (log.isDebugEnabled()) {
             log.debug("Import request received.");
         }
 
         if (StringUtils.isEmpty(mgnlRepository)) {
             mgnlRepository = RepositoryConstants.WEBSITE;
         }
         if (StringUtils.isEmpty(mgnlPath)) {
             mgnlPath = "/";
         }
 
         checkPath(); //check if path exists
 
         if (!checkPermissions(request, mgnlRepository, mgnlPath, Permission.WRITE)) {
 
             //escape to prevent XSS attack
             AlertUtil.setMessage("Write permission needed for import. User not allowed to WRITE path [" + StringEscapeUtils.escapeHtml(mgnlPath) + "]");
 
             throw new ServletException(new AccessDeniedException(
                 "Write permission needed for import. User not allowed to WRITE path ["
                     + StringEscapeUtils.escapeHtml(mgnlPath) //escape to prevent XSS attack
                     + "]"));
         }
         try{
             DataTransporter.importDocument(
                     mgnlFileImport,
                     mgnlRepository,
                     mgnlPath,
                     false,
                     mgnlUuidBehavior,
                     true,
                     true);
 		} catch (Exception e) {
 			AlertUtil.setMessage("Failed to import file. " + e.getMessage());
 			throw new ServletException(e.getMessage());
         } finally {
             mgnlFileImport.getFile().delete();
         }
 
         log.info("Import done");
 
         if (StringUtils.isNotBlank(mgnlRedirect)) {
             if (log.isInfoEnabled()) {
                 log.info(MessageFormat.format("Redirecting to [{0}]",
                     new Object[]{mgnlRedirect}));
             }
             response.sendRedirect(mgnlRedirect);
             return null;
         }
         return this.show();
     }
 }