/******************************************************************************

  * WebAjaxController.java - The Spring controller for the PicMan AJAX calls

  * 

  * PicMan - The BuckoSoft Picture Manager in Java

  * Copyright(c) 2007 - Dick Balaska

  * 

  */

 package com.buckosoft.PicMan.web;

 import java.io.IOException;

 import java.io.OutputStream;

 import java.io.UnsupportedEncodingException;

 import java.net.SocketException;

 import javax.servlet.http.HttpServletRequest;

 import javax.servlet.http.HttpServletResponse;

 import org.apache.catalina.connector.ClientAbortException;

 import org.apache.commons.logging.Log;

 import org.apache.commons.logging.LogFactory;

 import org.dom4j.Document;

 import org.dom4j.io.OutputFormat;

 import org.dom4j.io.XMLWriter;

 import org.springframework.web.servlet.ModelAndView;

 import com.buckosoft.BSAccount.web.BSAccountPageController;

 import com.buckosoft.BSAccount.web.BSAccountUserWebSession;

 import com.buckosoft.PicMan.business.PicManFacade;

 import com.buckosoft.PicMan.dom.ChainListDom;

 import com.buckosoft.PicMan.dom.ChainSetSizeListDom;

 import com.buckosoft.PicMan.dom.DirsInDirDom;

 import com.buckosoft.PicMan.dom.EngineReportDom;

 import com.buckosoft.PicMan.dom.HomeStatusDom;

 import com.buckosoft.PicMan.dom.MosaicBatchSetupDom;

 import com.buckosoft.PicMan.dom.MosaicSetupDom;

 import com.buckosoft.PicMan.dom.MosaicTilesDom;

 import com.buckosoft.PicMan.dom.PicFilterDom;

 import com.buckosoft.PicMan.dom.PicsInContactDom;

 import com.buckosoft.PicMan.dom.PicsInDirDom;

 import com.buckosoft.PicMan.dom.PicsInSetDom;

 import com.buckosoft.PicMan.dom.PosterSetupDom;

 import com.buckosoft.PicMan.dom.RootsDom;

 import com.buckosoft.PicMan.dom.SetManDom;

 import com.buckosoft.PicMan.dom.SetsInChainDom;

 import com.buckosoft.PicMan.dom.SyncStatusDom;

 import com.buckosoft.PicMan.dom.VirginsDom;

 import com.buckosoft.PicMan.domain.User;

 /** Spring controller that returns DOMs for the PicMan javascripts.

  * @author Dick Balaska

  * @since 2007/12/01

  * @see <a href="http://cvs.buckosoft.com/Projects/java/PicMan/PicMan/src/com/buckosoft/PicMan/web/WebAjaxController.java">WebAjaxController.java</a>

  */

 public class WebAjaxController extends BSAccountPageController {

         private static boolean DEBUG = false;

         protected final Log logger = LogFactory.getLog(getClass());

         private PicManFacade pmf;

         /** Set the reference to the PicMan API.

          * @param pmf The PicManFacade

          */

         public void setPicMan(PicManFacade pmf) { this.pmf = pmf; }

         /** Enable debug logger output on this module

          * @param debugFlag true == turn on debugging.

          */

         public void setDEBUG(boolean debugFlag) {

                 DEBUG = debugFlag;

         }

         /** Spring standard http request handler.

          * @param request The http request.

          * @param response The http response.

          * @return null to return just an http status because we pushed the DOM out the response.

          */ 

         public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) {

                 String cid = request.getParameter("cid");

                 String c = request.getParameter("c");

                 String command = request.getParameter("dom");

                 if (DEBUG) {

                         //String sid = request.getParameter("sid");

                         if (!command.equals("PicManStatus"))

                                 logger.info("XML Request com=" + command + " c=" + c + " cid=" + cid);

                 }

                 User user = null;

                 BSAccountUserWebSession userWebSession = this.bsAccountMan.getUserWebSession(request);

                 if (userWebSession != null) 

                         user = (User)userWebSession.getUser();

                 response.setContentType("text/xml");

                 response.addHeader("Cache-Control", "max-age=0");

                 response.addHeader("Cache-Control", "no-cache");

                 response.addHeader("expires", "0");

                 response.addHeader("Expires", "Tue, 01 Jan 1980 1:00:00 GMT");

                 response.addHeader("Pragma", "no-cache");

                 Document dom;

                 if (command == null)

                         dom = HomeStatusDom.createDocument(pmf, user);

                 else if (command.equals("ChainList"))

                         dom = ChainListDom.createDocument(pmf);

                 else if (command.equals("DirsInDir"))

                         dom = DirsInDirDom.createDocument(pmf, Integer.parseInt(cid), c);

                 else if (command.equals("EngineReport"))

                         dom = EngineReportDom.createDocument(pmf);

                 else if (command.equals("Mosaic"))

                         dom = MosaicSetupDom.createDocument(pmf, Integer.parseInt(cid));

                 else if (command.equals("MosaicList"))

                         dom = MosaicSetupDom.createDocument(pmf);

                 else if (command.equals("MosaicBatchList"))

                         dom = MosaicBatchSetupDom.createDocument(pmf);

                 else if (command.equals("MosaicTiles"))

                         dom = MosaicTilesDom.createDocument(pmf, Integer.parseInt(cid));

                 else if (command.equals("PicFilter"))

                         dom = PicFilterDom.createDocument(pmf, c);

                 else if (command.equals("PicsInContact")) 

                          dom = PicsInContactDom.createDocument(pmf, Integer.parseInt(cid), c);

                 else if (command.equals("PicsInDir"))

                         dom = PicsInDirDom.createDocument(pmf, user, Integer.parseInt(cid), c);

                 else if (command.equals("PicManStatus"))

                         dom = HomeStatusDom.createDocument(pmf, user);

                 else if (command.equals("PicsInSet"))

                         dom = PicsInSetDom.createDocument(pmf, Integer.parseInt(cid), 75);

                 else if (command.equals("PicsInSetCount"))

                         dom = PicsInSetDom.createDocument(pmf, cid, Integer.parseInt(c));

                 else if (command.equals("PosterList"))

                         dom = PosterSetupDom.createDocument(pmf);

                 else if (command.equals("RootsList"))

                         dom = RootsDom.createDocument(pmf);

                 else if (command.equals("SetList"))

                         dom = SetManDom.createDocument(pmf, null);

                 else if (command.equals("SetMan"))

                         dom = SetManDom.createDocument(pmf, user);

                 else if (command.equals("SetsInChainList"))

                         dom = SetsInChainDom.createDocument(pmf, Integer.parseInt(cid));

                 else if (command.equals("SetSizeList")) {

                         String sid = request.getParameter("sid");

                         dom = ChainSetSizeListDom.createDocument(pmf, Integer.parseInt(cid), Integer.parseInt(sid));

                 }

                 else if (command.equals("SyncStatus"))

                         dom = SyncStatusDom.createDocument(pmf);

                 else if (command.equals("Virgins"))

                         dom = VirginsDom.createDocument(pmf);

                 else

                         dom = HomeStatusDom.createDocument(pmf, user);

                 try {

                         OutputStream stream = response.getOutputStream();

                         OutputFormat outformat = OutputFormat.createPrettyPrint();

                         outformat.setEncoding("ISO-8859-1");

                         XMLWriter writer = new XMLWriter(stream, outformat);

                         writer.write(dom);

                         writer.flush();

                 } catch (SocketException e) {

                         logger.info("Caught socket exception");

                         return(null);

                 } catch (UnsupportedEncodingException e) {

                         logger.info(e);

                         pmf.addError(e);

                 } catch (ClientAbortException e) {

                         logger.warn("Caught ClientAbortException");

                         return(null);

                 } catch (IOException e) {

                         logger.info(e);

                         pmf.addError(e);

                 } catch (Exception e) {

                         return(null);

                 }

                 return null;

         }

 }