import java.util.Properties;

import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.Message.RecipientType;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class MailSender {
	private static String host = "";
	private static String user = "";
	private static String password = "";
	private static int port = 465;
	private static String from = "";
	private static String to = "";

	private static String auth = "true";
	private static String debug = "false";
	private static String socket_factory = "javax.net.ssl.SSLSocketFactory";
	private static String subject = "";
	private static String text = "";

	/**
	 * Constructor. Fields - parameters for send mail.
	 *
	 * @param host - mail server.
	 * @param user - user
	 * @param password - login
	 * @param port - port
	 * @param from - mail from address
	 * @param to - mail to address
	 * @param subject - subject
	 * @param text - text of mail
	 */
	public MailSender(String host, String user, String password, int port,
			String from, String to, String subject, String text) {

		if (!host.isEmpty())
			setHost(host);
		if (!user.isEmpty())
			setUser(user);
		if (!password.isEmpty())
			setPassword(password);
		if (port == 0)
			setPort(port);
		if (!from.isEmpty())
			setFrom(from);
		if (!to.isEmpty())
			setTo(to);
		if (!subject.isEmpty())
			setSubject(subject);
		if (!text.isEmpty())
			setText(text);
	}

	/**
	 * Send mail with parameters from constructor.
	 */

	public void send() {
		// Use Properties object to set environment properties
		Properties props = new Properties();

		props.setProperty("mail.transport.protocol", "smtp");
		props.put("mail.smtp.host", getHost());
		props.put("mail.smtp.port", getPort());
		props.put("mail.smtp.user", getUser());

		props.put("mail.smtp.auth", getAuth());
		props.put("mail.smtp.starttls.enable","true");//for gmail?
		props.put("mail.smtp.debug", getDebug());

		props.put("mail.smtp.socketFactory.port", getPort());
		props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");//for gmail?
		props.put("mail.smtp.socketFactory.fallback", "false");

		try {

			// Obtain the default mail session
			Session session = Session.getDefaultInstance(props, null);
			session.setDebug(new Boolean(getDebug()));

			// Construct the mail message
			MimeMessage message = new MimeMessage(session);
			message.setText(getText());
			message.setSubject(getSubject());
			message.setFrom(new InternetAddress(getFrom()));
			message
					.addRecipient(RecipientType.TO,
							new InternetAddress(getTo()));
			message.saveChanges();

			// Use Transport to deliver the message
			Transport transport = session.getTransport("smtp");
			transport.connect(getHost(), getUser(), getPassword());
			transport.sendMessage(message, message.getAllRecipients());
			transport.close();

		} catch (Exception e) {
			e.printStackTrace();
		}

	}

	public static String getHost() {
		return host;
	}

	public static void setHost(String host) {
		MailSender.host = host;
	}

	public static String getUser() {
		return user;
	}

	public static void setUser(String user) {
		MailSender.user = user;
	}

	public static String getPassword() {
		return password;
	}

	public static void setPassword(String password) {
		MailSender.password = password;
	}

	public static int getPort() {
		return port;
	}

	public static void setPort(int port) {
		MailSender.port = port;
	}

	public static String getFrom() {
		return from;
	}

	public static void setFrom(String from) {
		MailSender.from = from;
	}

	public static String getTo() {
		return to;
	}

	public static void setTo(String to) {
		MailSender.to = to;
	}

	public static String getAuth() {
		return auth;
	}

	public static void setAuth(String auth) {
		MailSender.auth = auth;
	}

	public static String getDebug() {
		return debug;
	}

	public static void setDebug(String debug) {
		MailSender.debug = debug;
	}

	public static String getSocket_factory() {
		return socket_factory;
	}

	public static void setSocket_factory(String socketFactory) {
		socket_factory = socketFactory;
	}

	public static String getSubject() {
		return subject;
	}

	public static void setSubject(String subject) {
		MailSender.subject = subject;
	}

	public static String getText() {
		return text;
	}

	public static void setText(String text) {
		MailSender.text = text;
	}