/*
 * The contents of this file are subject to the Mozilla Public License Version 1.1
 * (the "License"); you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at <http://www.mozilla.org/MPL/>.
 * 
 * Software distributed under the License is distributed on an "AS IS" basis, WITHOUT
 * WARRANTY OF ANY KIND, either express or implied. See the License for the specific
 * language governing rights and limitations under the License.
 * 
 * The Original Code is the Venice Web Communities System.
 * 
 * The Initial Developer of the Original Code is Eric J. Bowersox <erbo@silcom.com>,
 * for Silverwrist Design Studios.  Portions created by Eric J. Bowersox are
 * Copyright (C) 2001 Eric J. Bowersox/Silverwrist Design Studios.  All Rights Reserved.
 * 
 * Contributor(s): 
 */
package com.silverwrist.venice.servlets;

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import com.silverwrist.venice.core.*;
import com.silverwrist.venice.except.*;
import com.silverwrist.venice.servlets.format.*;

public class FindPost extends VeniceServlet
{
  /*--------------------------------------------------------------------------------
   * Overrides from class HttpServlet
   *--------------------------------------------------------------------------------
   */

  public String getServletInfo()
  {
    String rc = "FindPost servlet - Searches for posts in communities, conferences, and/or topics\n"
              + "Part of the Venice Web Communities System\n";
    return rc;

  } // end getServletInfo

  /*--------------------------------------------------------------------------------
   * Overrides from class VeniceServlet
   *--------------------------------------------------------------------------------
   */

  protected VeniceContent doVeniceGet(HttpServletRequest request, VeniceEngine engine,
				      UserContext user, RenderData rdat)
    throws ServletException, IOException, VeniceServletResult
  {
    CommunityContext comm = getCommunityParameter(request,user,true,"top");
    changeMenuCommunity(request,comm);
    String locator = "sig=" + comm.getCommunityID();

    ConferenceContext conf = getConferenceParameter(request,comm,false,"confops?" + locator);
    TopicContext topic = null;
    if (conf!=null)
    { // find the topic parameter
      locator += ("&conf=" + conf.getConfID());
      topic = getTopicParameter(request,conf,false,"confdisp?" + locator);
      if (topic!=null)
	locator += ("&top=" + topic.getTopicNumber());

    } // end if

    setMyLocation(request,"findpost?" + locator);
    return new FindPostData(comm,conf,topic);

  } // end doVeniceGet

  protected VeniceContent doVenicePost(HttpServletRequest request, VeniceEngine engine,
				       UserContext user, RenderData rdat)
    throws ServletException, IOException, VeniceServletResult
  {
    CommunityContext comm = getCommunityParameter(request,user,true,"top");
    changeMenuCommunity(request,comm);
    String locator = "sig=" + comm.getCommunityID();

    ConferenceContext conf = getConferenceParameter(request,comm,false,"confops?" + locator);
    TopicContext topic = null;
    if (conf!=null)
    { // find the topic parameter
      locator += ("&conf=" + conf.getConfID());
      topic = getTopicParameter(request,conf,false,"confdisp?" + locator);
      if (topic!=null)
	locator += ("&top=" + topic.getTopicNumber());

    } // end if

    setMyLocation(request,"findpost?" + locator);
    FindPostData data = new FindPostData(comm,conf,topic);

    try
    { // attempt to configure the display
      data.doSearch(request,engine);

    } // end try
    catch (AccessError ae)
    { // error in find parameters
      return new ErrorBox("Find Error",ae.getMessage(),"top");

    } // end catch
    catch (DataException de)
    { // database error, man
      return new ErrorBox("Database Error","Database error on find: " + de.getMessage(),"top");

    } // end catch

    return data;

  } // end doVenicePost

} // end class FindPost