/**
 *  Copyright (C) 2004 Orbeon, Inc.
 *
 *  This program is free software; you can redistribute it and/or modify it under the terms of the
 *  GNU Lesser General Public License as published by the Free Software Foundation; either version
 *  2.1 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 Lesser General Public License for more details.
 *
 *  The full text of the license is available at http://www.gnu.org/copyleft/lesser.html
 */
import org.orbeon.oxf.processor.SimpleProcessor;
import org.orbeon.oxf.processor.ProcessorInputOutputInfo;
import org.orbeon.oxf.pipeline.api.PipelineContext;
import org.xml.sax.SAXException;
import org.xml.sax.ContentHandler;
import org.xml.sax.Attributes;
import org.xml.sax.helpers.AttributesImpl;
import org.orbeon.oxf.xml.dom4j.LocationSAXWriter;
import javax.servlet.http.HttpSession;

import java.util.Enumeration;
import java.util.Properties;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.apache.log4j.Logger;
import org.apache.log4j.xml.DOMConfigurator;
import org.dom4j.Document;
import org.dom4j.XPath;

import alexs.common.Utils;
import hull.helpdesk.data.QuestionnaireDAO;

public class UserInfo extends SimpleProcessor {

	private static final Attributes NO_ATTRIBUTES = new AttributesImpl();

	private static Logger logger = Logger.getLogger(UserInfo.class);;

	public UserInfo() {
		addOutputInfo(new ProcessorInputOutputInfo(OUTPUT_DATA));
		/*
		 * This is a static const for the string "data" See XPL
		 */
		addInputInfo(new ProcessorInputOutputInfo(INPUT_DATA));
		/*
		 * This is where we query the existing database. Primarily for finding
		 * out if the user has answered this questionnaire in the last month.
		 */

	}

	public void generateData(PipelineContext context,
			ContentHandler contentHandler) throws SAXException {
		Utils myUtils = new Utils();
		DOMConfigurator.configure(myUtils.getLogConfig());
		SimpleDateFormat myFormatter = new SimpleDateFormat("MMyy");
		Date today = new Date();
		String errorStatus = "errorstatus";
		String errorValue = "ok";
		String errNoUser = "No such user";
		String errOk = "ok";
		String mmyyStatus="thisMMYY";
		/*
		 * This should be the session id from the request packet
		 */
		Document inputDoc = readInputAsDOM4J(context, INPUT_DATA);
		QuestionnaireDAO thisQuestion = new QuestionnaireDAO(
				"jdbc:mysql://databases.hull.ac.uk:3306/hdq2",
				"orbeon", "orbeonhd");
		/*
		 * Now we need to get hold of the user info associated with this session
		 */
		String sessionVal = inputDoc.valueOf("/request/requested-session-id");
		String tempUserid = inputDoc.valueOf("request/remote-user");
		String useridVal = null;
		LocationSAXWriter saxWriter= saxWriter = new LocationSAXWriter();
		
		if (tempUserid != null && !tempUserid.equals("")) {
			if (tempUserid.indexOf("@hull.ac.uk") != -1) {
				useridVal = useridVal.substring(0, tempUserid
						.indexOf("@hull.ac.uk")-1);
			} else {
				useridVal = tempUserid;
			}

			contentHandler.startDocument();
			contentHandler.startElement("", "user", "user", NO_ATTRIBUTES);
			/*
			 * And here we can write the dom4j document ito a content handler
			 */
			
			String alreadyanswered = "alreadyanswered";
			String value = "true";
			contentHandler.startElement("", alreadyanswered, alreadyanswered,
					NO_ATTRIBUTES);
			if (thisQuestion.alreadyAnswered(0, useridVal, myFormatter
					.format(today)) == true) {
				contentHandler.characters(value.toCharArray(), 0, value
						.length());
			} else {
				contentHandler.characters("false".toCharArray(), 0, "false"
						.length());
			}

			thisQuestion.close();
			contentHandler.endElement("", alreadyanswered, alreadyanswered);

			contentHandler.startElement("", errorStatus, errorStatus,
					NO_ATTRIBUTES);

			contentHandler.characters(errOk.toCharArray(), 0, errOk
					.length());

			contentHandler.endElement("", errorStatus, errorStatus);

			contentHandler.startElement("", mmyyStatus, mmyyStatus,
					NO_ATTRIBUTES);

			contentHandler.characters(myFormatter.format(today).toCharArray(), 0, myFormatter.format(today).length());
			contentHandler.endElement("", mmyyStatus, mmyyStatus);

		} else {

			contentHandler.startElement("", errorStatus, errorStatus,
					NO_ATTRIBUTES);

			contentHandler.characters(errNoUser.toCharArray(), 0, errNoUser
					.length());

			contentHandler.endElement("", errorStatus, errorStatus);
		}
		/*
		 * Now add the request stuff under the user node
		 */
		saxWriter.setContentHandler(contentHandler);
		saxWriter.write(inputDoc);
		contentHandler.endElement("", "user", "user");
		contentHandler.endDocument();
	}
}