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

  * MosaicAnalyseAjaxController.java - The Spring controller for the Mosaic Analyse AJAX calls

  * 

  * PicMan - The BuckoSoft Picture Manager in Java

  * Copyright(c) 2008 - Dick Balaska

  * 

  */

 package com.buckosoft.PicMan.web;

 import java.io.IOException;

 import javax.servlet.http.HttpServletRequest;

 import javax.servlet.http.HttpServletResponse;

 import org.apache.commons.logging.Log;

 import org.apache.commons.logging.LogFactory;

 import org.springframework.web.servlet.ModelAndView;

 import com.buckosoft.BSAccount.web.BSAccountPageController;

 import com.buckosoft.PicMan.business.PicManFacade;

 /** The Spring controller for the Mosaic Analysis page AJAX calls

  * @author Dick Balaska

  * @since 2008/05/30

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

  */

 public class MosaicAnalyseAjaxController 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("command");

                 if (DEBUG) {

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

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

                 }

                 response.setContentType("text/plain");

                 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");

                 try {

                         if (command == null) {

                                 response.sendError(550, "No command in request");

                                 return(null);

                         }

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

                                 pmf.getDB().deleteMosaicTiles(Integer.parseInt(c));

                         }

                         else {

                                 response.sendError(551, "Unknown command '" + command + "' in request");

                         }

                 } catch (NumberFormatException e) {

                         logger.info(e);

                         pmf.addError(e);

                 } catch (IOException e) {

                         logger.info(e);

                         pmf.addError(e);

                 }

                 return null;

         }

 }