/******************************************************************************
    * 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;
  	}
  
  }