/*

  * Copyright (c) 2003-2011, Simon Brown

  * All rights reserved.

  *

  * Redistribution and use in source and binary forms, with or without

  * modification, are permitted provided that the following conditions are met:

  *

  *   - Redistributions of source code must retain the above copyright

  *     notice, this list of conditions and the following disclaimer.

  *

  *   - Redistributions in binary form must reproduce the above copyright

  *     notice, this list of conditions and the following disclaimer in

  *     the documentation and/or other materials provided with the

  *     distribution.

  *

  *   - Neither the name of Pebble 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 OWNER 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.

  */

 package net.sourceforge.pebble.web.action;

 import net.sourceforge.pebble.web.security.RequireSecurityToken;

 import org.apache.commons.logging.Log;

 import org.apache.commons.logging.LogFactory;

 import net.sourceforge.pebble.web.view.View;

 import net.sourceforge.pebble.web.view.RedirectView;

 import net.sourceforge.pebble.web.view.ForwardView;

 import net.sourceforge.pebble.web.view.impl.FourZeroThreeView;

 import net.sourceforge.pebble.web.validation.ValidationContext;

 import net.sourceforge.pebble.domain.AbstractBlog;

 import net.sourceforge.pebble.Constants;

 import net.sourceforge.pebble.PebbleContext;

 import net.sourceforge.pebble.util.SecurityUtils;

 import net.sourceforge.pebble.security.PebbleUserDetails;

 import net.sourceforge.pebble.security.SecurityRealm;

 import net.sourceforge.pebble.security.SecurityRealmException;

 import javax.servlet.http.HttpServletRequest;

 import javax.servlet.http.HttpServletResponse;

 import javax.servlet.ServletException;

 import java.util.Map;

 import java.util.HashMap;

 import java.util.Enumeration;

 /**

  * Saves user preferences.

  *

  * @author    Simon Brown

  */

 @RequireSecurityToken

 public class SaveUserPreferencesAction extends SecureAction {

   /** the log used by this class */

   private static final Log log = LogFactory.getLog(SaveUserPreferencesAction.class);

   private static final String PREFERENCE = "preference.";

   /**

    * Peforms the processing associated with this action.

    *

    * @param request  the HttpServletRequest instance

    * @param response the HttpServletResponse instance

    * @return the name of the next view

    */

   public View process(HttpServletRequest request, HttpServletResponse response) throws ServletException {

     try {

       AbstractBlog blog = (AbstractBlog)getModel().get(Constants.BLOG_KEY);

       Map<String,String> preferences = new HashMap<String,String>();

       Enumeration parameterNames = request.getParameterNames();

       while (parameterNames.hasMoreElements()) {

         String parameterName = (String)parameterNames.nextElement();

         if (parameterName.startsWith(PREFERENCE)) {

           preferences.put(parameterName.substring(PREFERENCE.length()), request.getParameter(parameterName));

         }

       }

       PebbleUserDetails currentUserDetails = SecurityUtils.getUserDetails();

       // can the user change their user details?

       if (!currentUserDetails.isDetailsUpdateable()) {

         return new FourZeroThreeView();

       }

       SecurityRealm realm = PebbleContext.getInstance().getConfiguration().getSecurityRealm();

       ValidationContext validationContext = new ValidationContext();

       if (!validationContext.hasErrors()) {

         currentUserDetails.setPreferences(preferences);

         realm.updateUser(currentUserDetails);

         return new RedirectView(blog.getUrl() + "editUserPreferences.secureaction");

       }

       getModel().put("validationContext", validationContext);

       return new ForwardView("/editUserPreferences.secureaction");

     } catch (SecurityRealmException e) {

       throw new ServletException(e);

     }

   }

   /**

    * Gets a list of all roles that are allowed to access this action.

    *

    * @return  an array of Strings representing role names

    * @param request

    */

   public String[] getRoles(HttpServletRequest request) {

     return new String[]{Constants.ANY_ROLE};

   }

 }