/*
    * Created on Jul 21, 2004 
    * 
    *   Firemox is a turn based strategy simulator
    *   Copyright (C) 2003-2007 Fabrice Daugan
    *
    *   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., 
   * 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   * 
   */
  package net.sf.firemox.mail;
  
  import java.io.File;
  import java.util.List;
  import java.util.Properties;
  
  import javax.activation.DataHandler;
  import javax.activation.FileDataSource;
  import javax.mail.Authenticator;
  import javax.mail.Message;
  import javax.mail.Part;
  import javax.mail.PasswordAuthentication;
  import javax.mail.Session;
  import javax.mail.Transport;
  import javax.mail.internet.InternetAddress;
  import javax.mail.internet.MimeBodyPart;
  import javax.mail.internet.MimeMessage;
  import javax.mail.internet.MimeMultipart;
  
  import net.sf.firemox.tools.Configuration;
  import net.sf.firemox.tools.MToolKit;
  
  /***
   * To send a mail.
   * 
   * @author <a href="mailto:fabdouglas@users.sourceforge.net">Fabrice Daugan </a>
   * @since 0.90
   */
  public final class MailUtils {
  
  	/***
  	 * Create a new instance of this class.
  	 */
  	private MailUtils() {
  		super();
  	}
  
  	/***
  	 * 
  	 */
  	public static final String DEFAULT_CONTENT_TYPE = "text/html";
  
  	/***
  	 * @param userName
  	 * @param from
  	 * @param to
  	 * @param message
  	 * @param subject
  	 * @param attachments
  	 * @param headers
  	 * @param mailerUser
  	 * @param hostName
  	 * @return a MIME message
  	 */
  	public static MimeMessage sendEmail(String userName, String from,
  			String[] to, String message, String subject, List<String> attachments,
  			Header[] headers, String mailerUser, String hostName) {
  
  		final Properties props = System.getProperties();
  		props.put("user.name", userName);
  		props.put("mail.user", userName);
  		// props.put("user.passwd", "secret");
  		// props.put("user.psswd", "secret");
  		// props.put("user.pwd", "secret");
  		// props.put("mail.smtp.password", "secret");
  		// props.put("mail.smtp.auth", "true");
  		// props.put("mail.smtp.port", "25");
  		props.put("mail.smtp.user", userName);
  		props.put("mail.smtp.host", hostName);
  		props.put("mail.host", hostName);
  		props.put("mail.smtp.auth", "true");
  		props.put("mail.transport.protocol", "smtp");
  		props.putAll(MToolKit.getSmtpProperties());
  		Session mailSession = null;
  
  		if (Configuration.getBoolean("useProxy", false)) {
  			mailSession = Session.getDefaultInstance(props, new Authenticator() {
  				@Override
 				public PasswordAuthentication getPasswordAuthentication() {
 					return new PasswordAuthentication(props
 							.getProperty("socks.proxyUserName"), props
 							.getProperty("socks.proxyPassword"));
 				}
 			});
 		} else {
 			mailSession = Session.getDefaultInstance(props, null);
 		}
 
 		mailSession.setDebug(false);
 		try {
 
 			// load the key store
 			MimeMessage msg = new MimeMessage2(mailSession);
 			msg.setHeader("X-Mailer", "JavaMailer");
 			MimeMultipart mp = new MimeMultipart();
 			MimeBodyPart bodyPart = null;
 			MimeBodyPart bodyPartTxt = new MimeBodyPart();
 
 			// add the message text to the mail
 			if (message != null) {
 				bodyPartTxt.setContent(message, DEFAULT_CONTENT_TYPE);
 				mp.addBodyPart(bodyPartTxt);
 			}
 
 			// add the attachment files
 			if (attachments != null) {
 				for (String attachment : attachments) {
 					bodyPart = new MimeBodyPart();
 					if (!new File(attachment).exists()) {
 						throw new InternalError("File " + attachment + " does not exist");
 					}
 					FileDataSource fds = new FileDataSource(attachment);
 					DataHandler dh = new DataHandler(fds);
 					bodyPart.setFileName(attachment
 							.substring(attachment.lastIndexOf('/') + 1));
 					bodyPart.setDisposition(Part.ATTACHMENT);
 					bodyPart.setDescription("File Attachment");
 					bodyPart.setDataHandler(dh);
 					mp.addBodyPart(bodyPart);
 				}
 			}
 
 			// add the Recipients to
 			InternetAddress[] addresses = new InternetAddress[to.length];
 			for (int i = 0; i < to.length; i++) {
 				// to[i]="f-daugan@laptop2.fabdouglas.fr";
 				addresses[i] = new InternetAddress(to[i].trim());
 			}
 			msg.setRecipients(Message.RecipientType.TO, addresses);
 
 			// add custom headers
 			if (headers != null) {
 				for (Header header : headers) {
 					msg.addHeader(header.getHeaderName(), header.getHeaderValue());
 				}
 			}
 
 			msg.setFrom(new InternetAddress(from));
 
 			if (attachments == null || bodyPart == null) {
 				// simple mail
 				msg.setContent(bodyPartTxt.getContent(), bodyPartTxt.getContentType());
 			} else {
 				msg.setContent(mp);
 			}
 
 			msg.setSubject(subject);
 			msg.setSentDate(new java.util.Date());
 			msg.saveChanges();
 
 			Transport transport = mailSession.getTransport("smtp");
 			transport.connect(hostName, 25, userName, "");
 			transport.sendMessage(msg, addresses);
 			transport.close();
 			return msg;
 		} catch (Exception e) {
 			e.printStackTrace();
 		}
 		return null;
 	}
 }