/*
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 2 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 General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
 *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

package eti.bi.alphaminer.vo;


import java.text.DecimalFormat;
import java.util.Calendar;
import java.util.Vector;

import eti.bi.alphaminer.core.dao.BIMLDAO;
import eti.bi.alphaminer.core.dao.DAOFactory;
import eti.bi.alphaminer.vo.BICase;
import eti.bi.alphaminer.vo.Node;
import eti.bi.alphaminer.vo.NodeConnection;
import eti.bi.common.Constants;
import eti.bi.exception.AppException;

/**
 * CaseFactory is responsible for creating Cases.
 */
public class CaseFactory {

	/**
	 * Creates a Case.
	 * @return the Case created.
	 */
	public static BICase createCase() {
		BICase newCase = new BICase();
		newCase.setCaseID(generateCaseID());
		newCase.setStatus("new");
		return newCase;
	}

	/**
	 * Creates a Case based on case content and with a specified case ID.
	 * @param a_CaseID ID of the case to be created.
	 * @param a_CML the case content used.
	 * @return the Case created.
	 */
	public static BICase createCase(String a_CaseID, String a_CML) {
		BICase createCase = new BICase();
		createCase.setCaseID(a_CaseID);
		createCase = NodeFactory.insertHeaderAndTaskNode(createCase, a_CML);
		return createCase;
	}

	/**
	 * Creates a Case with a specified case ID.
	 * @param a_CaseID ID of the case to be created.
	 * @return the Case created.
	 */
	public static BICase createCase(String a_CaseID) {
		BICase createCase = new BICase();
		createCase.setCaseID(a_CaseID);
		return createCase;
	}

	/**
	 * Creates a Case and copies information of a given source Case into the newly
	 * created Case.
	 * @param a_SourceCase the source Case to be copied.
	 * @return the Case created.
	 */
	public static BICase createCase(BICase a_SourceCase) {
		BICase newCase = createCase();

		if (a_SourceCase == null) {
			System.err.println("source case is null");
		} else {
			newCase.setNode(
				NodeFactory.createNode(
					newCase.getCaseID(),
					a_SourceCase.getNode(NodeFactory.TASK, null)));

			Node[] nodes = a_SourceCase.getModelNodeListArray();
			for (int i = 0; nodes != null && i < nodes.length; i++)
				newCase.setNode(
					NodeFactory.createNode(newCase.getCaseID(), nodes[i]));

			nodes = a_SourceCase.getOperatorNodeListArray();
			for (int i = 0; nodes != null && i < nodes.length; i++)
				newCase.setNode(
					NodeFactory.createNode(newCase.getCaseID(), nodes[i]));

			nodes = a_SourceCase.getDataNodeListArray();
			for (int i = 0; nodes != null && i < nodes.length; i++)
				newCase.setNode(
					NodeFactory.createNode(newCase.getCaseID(), nodes[i]));

			Vector connections = a_SourceCase.getProcess().getConnectionList();
			NodeConnection con = null;
			for (int i = 0; i < connections.size(); i++) {
				con = (NodeConnection) connections.elementAt(i);
				newCase.insertConnection(
					con.getHeadNodeID(),
					con.getTailNodeID());
			}

			newCase.setAccessRight(a_SourceCase.getAccessRight());
			newCase.setVersion(a_SourceCase.getVersion());
			newCase.setCaseID(generateCaseID());
			newCase.setStatus("new");
		}

		return newCase;
	}

	/**
	 * Generates a unique ID for a Case.
	 * @return the ID.
	 * @throws AppException 
	 */
	
	public static String generateCaseID(){
	
		BIMLDAO aBIMLDAO;
		try {
			aBIMLDAO = (BIMLDAO) DAOFactory.getDAO("BIML", Constants.BIML_DAO_TYPE);
			return aBIMLDAO.getNextId();
		} catch (AppException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			DecimalFormat aDF = new DecimalFormat(Constants.BIML_ID_PATTERN);
			return aDF.format(Calendar.getInstance().getTimeInMillis());
		}
		
	}
	
}