/**
* Licensed under the GNU LESSER GENERAL PUBLIC LICENSE, version 2.1, dated February 1999.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the latest version of the GNU Lesser General
* Public License as published by the Free Software Foundation;
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program (LICENSE.txt); if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package org.jamwiki.servlets;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.lang.StringUtils;
import org.jamwiki.WikiBase;
import org.jamwiki.WikiException;
import org.jamwiki.WikiMessage;
import org.jamwiki.authentication.RoleImpl;
import org.jamwiki.authentication.WikiUserDetails;
import org.jamwiki.model.Topic;
import org.jamwiki.model.TopicVersion;
import org.jamwiki.model.WikiUser;
import org.jamwiki.utils.LinkUtil;
import org.jamwiki.utils.NamespaceHandler;
import org.jamwiki.utils.WikiLink;
import org.jamwiki.utils.WikiLogger;
import org.jamwiki.utils.WikiUtil;
import org.springframework.web.servlet.ModelAndView;
/**
* Used to handle moving a topic to a new name.
*/
public class MoveServlet extends JAMWikiServlet {
private static final WikiLogger logger = WikiLogger.getLogger(MoveServlet.class.getName());
/** The name of the JSP file used to render the servlet output. */
protected static final String JSP_MOVE = "move.jsp";
/**
*
*/
protected ModelAndView handleJAMWikiRequest(HttpServletRequest request, HttpServletResponse response, ModelAndView next, WikiPageInfo pageInfo) throws Exception {
WikiUserDetails userDetails = ServletUtil.currentUserDetails();
if (!userDetails.hasRole(RoleImpl.ROLE_MOVE)) {
WikiMessage messageObject = new WikiMessage("login.message.move");
return ServletUtil.viewLogin(request, pageInfo, WikiUtil.getTopicFromURI(request), messageObject);
}
if (request.getParameter("move") == null) {
view(request, next, pageInfo);
} else {
move(request, next, pageInfo);
}
return next;
}
/**
*
*/
private void move(HttpServletRequest request, ModelAndView next, WikiPageInfo pageInfo) throws Exception {
String topicName = WikiUtil.getTopicFromRequest(request);
if (StringUtils.isBlank(topicName)) {
throw new WikiException(new WikiMessage("common.exception.notopic"));
}
WikiMessage pageTitle = new WikiMessage("move.title", topicName);
pageInfo.setPageTitle(pageTitle);
pageInfo.setTopicName(topicName);
String moveDestination = request.getParameter("moveDestination");
if (!movePage(request, next, pageInfo, topicName, moveDestination)) {
return;
}
String moveCommentsPage = WikiUtil.getParameterFromRequest(request, "moveCommentsPage", true);
if (!StringUtils.isBlank(moveCommentsPage)) {
String commentsDestination = WikiUtil.extractCommentsLink(moveDestination);
if (WikiUtil.isCommentsPage(moveCommentsPage) && !moveCommentsPage.equals(topicName) && !commentsDestination.equals(moveDestination)) {
if (!movePage(request, next, pageInfo, moveCommentsPage, commentsDestination)) {
return;
}
}
}
String virtualWiki = pageInfo.getVirtualWikiName();
ServletUtil.redirect(next, virtualWiki, moveDestination);
}
/**
*
*/
private boolean movePage(HttpServletRequest request, ModelAndView next, WikiPageInfo pageInfo, String moveFrom, String moveDestination) throws Exception {
String virtualWiki = pageInfo.getVirtualWikiName();
Topic fromTopic = WikiBase.getDataHandler().lookupTopic(virtualWiki, moveFrom, false, null);
if (fromTopic == null) {
throw new WikiException(new WikiMessage("common.exception.notopic"));
}
if (StringUtils.isBlank(moveDestination)) {
next.addObject("messageObject", new WikiMessage("move.exception.nodestination"));
this.view(request, next, pageInfo);
return false;
}
WikiLink fromWikiLink = LinkUtil.parseWikiLink(moveFrom);
WikiLink destinationWikiLink = LinkUtil.parseWikiLink(moveDestination);
if (!StringUtils.equals(fromWikiLink.getNamespace(), destinationWikiLink.getNamespace())) {
// do not allow moving into or out of image & category namespace
if (StringUtils.equals(fromWikiLink.getNamespace(), NamespaceHandler.NAMESPACE_CATEGORY)
|| StringUtils.equals(fromWikiLink.getNamespace(), NamespaceHandler.NAMESPACE_CATEGORY_COMMENTS)
|| StringUtils.equals(destinationWikiLink.getNamespace(), NamespaceHandler.NAMESPACE_CATEGORY)
|| StringUtils.equals(destinationWikiLink.getNamespace(), NamespaceHandler.NAMESPACE_CATEGORY_COMMENTS)
) {
next.addObject("messageObject", new WikiMessage("move.exception.namespacecategory"));
this.view(request, next, pageInfo);
return false;
} else if (StringUtils.equals(fromWikiLink.getNamespace(), NamespaceHandler.NAMESPACE_IMAGE)
|| StringUtils.equals(fromWikiLink.getNamespace(), NamespaceHandler.NAMESPACE_IMAGE_COMMENTS)
|| StringUtils.equals(destinationWikiLink.getNamespace(), NamespaceHandler.NAMESPACE_IMAGE)
|| StringUtils.equals(destinationWikiLink.getNamespace(), NamespaceHandler.NAMESPACE_IMAGE_COMMENTS)
) {
next.addObject("messageObject", new WikiMessage("move.exception.namespaceimage"));
this.view(request, next, pageInfo);
return false;
}
}
WikiUserDetails userDetails = ServletUtil.currentUserDetails();
if (!ServletUtil.isMoveable(virtualWiki, moveFrom, userDetails)) {
this.view(request, next, pageInfo);
next.addObject("messageObject", new WikiMessage("move.exception.permission", moveFrom));
return false;
}
if (!WikiBase.getDataHandler().canMoveTopic(fromTopic, moveDestination)) {
this.view(request, next, pageInfo);
next.addObject("messageObject", new WikiMessage("move.exception.destinationexists", moveDestination));
return false;
}
String moveComment = request.getParameter("moveComment");
WikiUser user = ServletUtil.currentWikiUser();
TopicVersion topicVersion = new TopicVersion(user, ServletUtil.getIpAddress(request), moveComment, fromTopic.getTopicContent(), 0);
topicVersion.setEditType(TopicVersion.EDIT_MOVE);
WikiBase.getDataHandler().moveTopic(fromTopic, topicVersion, moveDestination);
return true;
}
/**
*
*/
private void view(HttpServletRequest request, ModelAndView next, WikiPageInfo pageInfo) throws Exception {
String topicName = WikiUtil.getTopicFromRequest(request);
String virtualWiki = pageInfo.getVirtualWikiName();
if (StringUtils.isBlank(topicName)) {
throw new WikiException(new WikiMessage("common.exception.notopic"));
}
Topic topic = WikiBase.getDataHandler().lookupTopic(virtualWiki, topicName, false, null);
if (topic == null) {
throw new WikiException(new WikiMessage("common.exception.notopic"));
}
String commentsPage = WikiUtil.extractCommentsLink(topicName);
Topic commentsTopic = WikiBase.getDataHandler().lookupTopic(virtualWiki, commentsPage, false, null);
if (commentsTopic != null) {
// add option to also move comments page
next.addObject("moveCommentsPage", commentsPage);
}
WikiMessage pageTitle = new WikiMessage("move.title", topicName);
pageInfo.setPageTitle(pageTitle);
pageInfo.setContentJsp(JSP_MOVE);
pageInfo.setTopicName(topicName);
String moveDestination = (StringUtils.isBlank(request.getParameter("moveDestination")) ? topicName : request.getParameter("moveDestination"));
next.addObject("moveDestination", moveDestination);
next.addObject("moveComment", request.getParameter("moveComment"));
}
}