/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2003 Melvin Dave P. Vivas. All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *    "This product includes software developed by Melvin Dave P. Vivas."
 *    Alternately, this acknowledgment may appear in the software
 *    itself, if and wherever such third-party acknowledgments
 *    normally appear.
 *
 * 4. The names "LemonSMS", and "Melvin Dave P. Vivas"
 *    must not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact don_vito@hotpop.com.
 *
 * 5. Products derived from this software may not be called "LemonSMS",
 *    nor may "LemonSMS" appear in their name, without prior written
 *    permission of Melvin Dave P. Vivas.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by 
 * individuals on behalf of the LemonSMS project. For more
 * information , please see <http://www.sourceforge.net/projects/lemonsms>.
 */

package net.lemongreen.mobile.smslibrary;

//import gnu.io.*;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.Writer;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;

public class SMSRetrievalHandler extends SMSService {
	
	private static SMSRetrievalHandler msgBuilder= null;
	
	private SMSRetrievalHandler(){	
	}
	
	public static SMSRetrievalHandler getInstance(){
		if(msgBuilder==null){
			msgBuilder = new SMSRetrievalHandler();
		}
		return msgBuilder;
	}	
	
	
	public final ArrayList getMessagesList() {
		List smsAL = null;
		try {	
			
			cmdutil.executeCommand(cmdutil.getLIST_MESSAGES_RECUNREAD());
			Thread.sleep(2000);
			smsAL = new ArrayList();
			
			String msgD = null;
			SMSMessage smsMessage = null;

			StringTokenizer st =
				new StringTokenizer(cmdutil.getCommandResponse(), "\n");
			st.nextToken();

			while (st.hasMoreTokens()) {
				msgD = st.nextToken().replace(cmdutil.getEnter(), ',');
				smsMessage = parseForSaving(msgD);
				smsMessage.setMessageText(st.nextToken());
				smsAL.add(smsMessage);
				msgD = null;
				smsMessage = null;
			}

			//remove last item in ArrayList which contains "OK" response message
			if (((SMSMessage) smsAL.get(smsAL.size() - 1))
				.getMessageText()
				.trim()
				.equals("OK")) {
				smsAL.remove(smsAL.size() - 1);
			}
			//Thread.sleep(3000);
			
		} catch (Exception e) {
			e.printStackTrace();
		}

		return (ArrayList)smsAL;
	}
	
	public final void processMessageListToFile(String inboxFile) {
		List smsAL = null;
		try {	
			
			cmdutil.executeCommand(cmdutil.getLIST_MESSAGES_RECUNREAD());
			Thread.sleep(2000);
			smsAL = new ArrayList();
			
			String msgD = null;
			SMSMessage smsMessage = null;

			StringTokenizer st =
				new StringTokenizer(cmdutil.getCommandResponse(), "\n");
			st.nextToken();

			Writer bwriter = new BufferedWriter(new FileWriter(inboxFile, true));
			
			while (st.hasMoreTokens()) {
				msgD = st.nextToken().replace(cmdutil.getEnter(), ',');
				smsMessage = parseForSaving(msgD);
				smsMessage.setMessageText(st.nextToken());	
				//save in inbox file first before deleting
				
				bwriter.write("messageid = " + smsMessage.getMsgID().trim());
				bwriter.write(",from = " + smsMessage.getMsisdn().trim());
				bwriter.write(",message = " + smsMessage.getMessageText().trim());
				bwriter.write(",date = " + smsMessage.getDate().trim());
				bwriter.write(",time = " + smsMessage.getTime().trim());
				bwriter.write("\n");
					
				bwriter.flush();
				
				SMSService.deleteMessage(smsMessage.getMsgID());				
				msgD = null;
				smsMessage = null;
			}
			
			bwriter.close();

			//remove last item in ArrayList which contains "OK" response message
			if (((SMSMessage) smsAL.get(smsAL.size() - 1))
				.getMessageText()
				.trim()
				.equals("OK")) {
				smsAL.remove(smsAL.size() - 1);
			}
			//Thread.sleep(3000);
			
		}catch (NullPointerException npe) {			
		}catch (Exception e) {
			e.printStackTrace();
		}

	}

	public final SMSMessage parseForSaving(String lineRead) {

		boolean isAfterMsgID = false;
		int tmpIndex = 0;
		final SMSMessage smsMsg = new SMSMessage();
		String strTmp = null;
		final StringTokenizer st = new StringTokenizer(lineRead, ",");

		while (st.hasMoreTokens()) {

			strTmp = st.nextToken().trim().replace('\"', ' ').trim();
			if (strTmp.startsWith("+CMGL")) {
				smsMsg.setMsgID(strTmp.substring(6));
				isAfterMsgID = true;
				tmpIndex = 1;
			} else if (
				strTmp.indexOf("REC") > -1 || strTmp.indexOf("STO") > -1) {
			} else {
				if (tmpIndex == 1 && isAfterMsgID == true) {
					//msisdn
					tmpIndex = 2;
					smsMsg.setMsisdn(strTmp);
				} else if (tmpIndex == 2 && isAfterMsgID == true) {
					//date
					tmpIndex = 3;
					smsMsg.setDate(strTmp);
				} else if (tmpIndex == 3 && isAfterMsgID == true) {
					//time
					tmpIndex = 0;
					smsMsg.setTime(strTmp);
					isAfterMsgID = false;
				}
				strTmp = null;
			}

		}
		return smsMsg;
	}

}