/*
    * This software was designed and created by Jason Carroll.
    * Copyright (c) 2002, 2003, 2004 Jason Carroll.
    * The author can be reached at jcarroll@cowsultants.com
    * ITracker website: http://www.cowsultants.com
    * ITracker forums: http://www.cowsultants.com/phpBB/index.php
    *
    * This program is free software; you can redistribute it and/or modify
    * it only under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   *
   * 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 General Public License for more details.
   */
  
  package org.itracker.web.actions.project;
  
  import java.io.IOException;
  
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import javax.servlet.http.HttpSession;
  
  import org.apache.commons.beanutils.PropertyUtils;
  import org.apache.log4j.Logger;
  import org.apache.struts.action.ActionForm;
  import org.apache.struts.action.ActionForward;
  import org.apache.struts.action.ActionMapping;
  import org.apache.struts.action.ActionMessage;
  import org.apache.struts.action.ActionMessages;
  import org.itracker.model.User;
  import org.itracker.services.IssueService;
  import org.itracker.web.actions.base.ItrackerBaseAction;
  import org.itracker.web.util.Constants;
  
  
  public class RemoveHistoryEntryAction extends ItrackerBaseAction {
  	private static final Logger log = Logger.getLogger(RemoveHistoryEntryAction.class);
  
  
      public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
  
      	ActionMessages errors = new ActionMessages();
  
          try {
              IssueService issueService = getITrackerServices().getIssueService();
  
              Integer historyId = (Integer) PropertyUtils.getSimpleProperty(form, "historyId");
              String caller = (String) PropertyUtils.getSimpleProperty(form, "caller");
              if(caller == null) {
                  caller = "";
              }
  
              HttpSession session = request.getSession(true);
              User currUser = (User) session.getAttribute(Constants.USER_KEY);
              if(! currUser.isSuperUser()) {
                  return mapping.findForward("unauthorized");
              } else {
                  Integer issueId = issueService.removeIssueHistoryEntry(historyId, currUser.getId());
                  return new ActionForward(mapping.findForward("editissue").getPath() + "?id=" + issueId + "&caller=" + caller);
              }
          } catch(Exception e) {
          	errors.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage("itracker.web.error.system"));
              log.error("System Error.", e);
          }
          if(! errors.isEmpty()) {
          	saveErrors(request, errors);
          }
          return mapping.findForward("error");
      }
  
  }