// MailListener.java - emails job status updates to a user
   // $Id: MailListener.java,v 1.5 2007/05/07 18:26:53 sjardine Exp $
   //
   // - basically gives an example for getting the status callbacks on a FAX job
   //
   // Copyright 2003, Joe Phillips <joe.phillips@innovationsw.com>
   // Copyright 2003, Innovation Software Group LLC - http://www.innovationsw.com/
   //
   // This library is free software; you can redistribute it and/or
  // modify it under the terms of the GNU Library General Public
  // License as published by the Free Software Foundation; either
  // version 2 of the License, or (at your option) any later version.
  //
  // This library 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
  // Library General Public License for more details.
  //
  // You should have received a copy of the GNU Library General Public
  // License along with this library; if not, write to the Free
  // Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  //
  //
  // for information on the HylaFAX FAX server see
  //  http://www.hylafax.org/
  //
  //  
  
  package gnu.hylafax.util;
  
  import gnu.hylafax.job.ReceiveEvent;
  import gnu.hylafax.job.ReceiveListener;
  import gnu.hylafax.job.SendEvent;
  import gnu.hylafax.job.SendListener;
  
  import java.io.File;
  import java.text.SimpleDateFormat;
  import java.util.Date;
  import java.util.Properties;
  
  import javax.activation.DataHandler;
  import javax.activation.FileDataSource;
  import javax.activation.MimetypesFileTypeMap;
  import javax.mail.Message;
  import javax.mail.Part;
  import javax.mail.Session;
  import javax.mail.Transport;
  import javax.mail.internet.MimeBodyPart;
  import javax.mail.internet.MimeMessage;
  import javax.mail.internet.MimeMultipart;
  
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  
  /***
   * This class implements an example fax job listener. It emails the status
   * updates to a given mailbox.
   * 
   * @author $Author: sjardine $
   * @version $Id: MailListener.java,v 1.5 2007/05/07 18:26:53 sjardine Exp $
   * @see gnu.hylafax.job.SendNotifier
   * @see gnu.hylafax.job.SendEvent
   * @see gnu.hylafax.job.ReceiveNotifier
   * @see gnu.hylafax.job.ReceiveEvent
   * @see gnu.hylafax.util.Notifier
   */
  public class MailListener implements SendListener, ReceiveListener {
      static final SimpleDateFormat rfc822df = new SimpleDateFormat(
  	    "dd MMM yyyy HH:mm:ss z");
      static final String KEY_TO = "notifier.to";
      static final String KEY_FROM = "notifier.from";
  
      private Properties properties;
  
      private final static Log log = LogFactory.getLog(MailListener.class);
  
      // default constructor
      public MailListener() {
  	properties = new Properties(System.getProperties());
      }// MailListener
  
      /***
       * 
       * 
       */
      public void onSendEvent(SendEvent event) {
  	try {
  	    // nothing for now.
  	} catch (Exception e) {
  	    log.error(e.getMessage(), e);
  	}
      }// onSendEvent
  
      /***
       * This method is called when a fax-received event occurs. It composes an
       * email, attaching relevant files and mails it to a target mailbox.
       */
      public void onReceiveEvent(ReceiveEvent event) {
  	String subject;
 	String body;
 	String cid = null;
 	Date now = new Date();
 
 	subject = "Facsimile received";
 	if ((event.getCidName() != null) && (!"".equals(event.getCidName()))) {
 	    cid = event.getCidName();
 	} else if ((event.getCidNumber() != null)
 		&& (!"".equals(event.getCidNumber()))) {
 	    cid = event.getCidNumber();
 	}
 
 	try {
 	    File f = new File(event.getFilename());
 	    if (!f.exists()) {
 		// failure? attach log file instead
 		f = new File("log" + File.separator + "c"
 			+ event.getCommunicationIdentifier());
 		subject = "Facsimile failed";
 		body = "A facsimile failed to be received at " + now + "\n\n"
 			+ "See the attached log file for session details.\n";
 	    } else {
 		body = "The attached facsimile was received " + now + "\n";
 	    }
 	    if ((event.getMessage() != null)
 		    && (!"".equals(event.getMessage()))) {
 		body += "The server's message is:\n\n\t" + event.getMessage();
 	    }
 	    if (cid != null)
 		subject += " from " + cid;
 
 	    Session s = Session.getDefaultInstance(properties);
 	    MimeMessage msg = new MimeMessage(s);
 	    msg.addRecipients(Message.RecipientType.TO, properties
 		    .getProperty(KEY_TO));
 	    msg.setSubject(subject);
 	    msg.addHeader("From", properties.getProperty(KEY_FROM));
 	    msg.addHeader("Date", rfc822df.format(now));
 	    msg
 		    .addHeader("X-MailListener",
 			    "$Id: MailListener.java,v 1.5 2007/05/07 18:26:53 sjardine Exp $");
 
 	    // first body part
 	    MimeBodyPart part0 = new MimeBodyPart();
 	    part0.setText(body);
 
 	    // second body part
 	    FileDataSource fds = new FileDataSource(f);
 	    fds.setFileTypeMap(new MimetypesFileTypeMap());
 	    DataHandler fdh = new DataHandler(fds);
 	    MimeBodyPart part1 = new MimeBodyPart();
 	    part1.setDataHandler(fdh);
 	    part1.setDisposition(Part.INLINE);
 	    part1.setFileName(f.getName());
 	    // build the message
 	    MimeMultipart mp = new MimeMultipart();
 	    mp.addBodyPart(part0);
 	    mp.addBodyPart(part1);
 	    msg.setContent(mp);
 
 	    // send the message
 	    Transport.send(msg);
 
 	} catch (Exception e) {
 	    log.error(e.getMessage(), e);
 	}
     }// onReceiveEvent
 
 }// MailListener
 // MailListener.java