package es.sinjava.labs;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.InvalidPropertiesFormatException;
import java.util.Properties;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.NoSuchProviderException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class Mailer {

    Properties props = new Properties();

    public Mailer(String text) {
        props = loadConfiguration();
        InternetAddress destiny = getDestinyFromProperties(props);
        Session session = Session.getDefaultInstance(props);
        session.setDebug(true);
        String from = props.getProperty("mail.smtp.user");
        SimpleDateFormat sdf = new SimpleDateFormat("dd-mm-yyyy");
        String subject = "PortalMessage " + sdf.format((new Date()));
        MimeMessage message = createMessage(destiny, subject, text, session,
                from);
        sendMessage(session, from, message);
    }

    private InternetAddress getDestinyFromProperties(Properties props2) {
        String destinyString = props.getProperty("info");
        InternetAddress destiny = null;
        try {
            destiny = new InternetAddress(destinyString);
        } catch (AddressException e) {
            e.printStackTrace();
        }
        return destiny;
    }

    private Properties loadConfiguration() {
        Properties propertiesFromFile = new Properties();
        try {
            propertiesFromFile.loadFromXML(new FileInputStream("mail.xml"));
        } catch (InvalidPropertiesFormatException e) {
            e.printStackTrace();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return propertiesFromFile;
    }

    private void sendMessage(Session session, String from, MimeMessage message) {
        Transport t;
        String pass = props.getProperty("mail.smtp.pass");
        try {
            t = session.getTransport("smtp");
            t.connect(from, pass);
            t.sendMessage(message, message.getAllRecipients());
            t.close();
        } catch (NoSuchProviderException e) {
            e.printStackTrace();
        } catch (MessagingException e) {
            e.printStackTrace();
        }
    }

    private MimeMessage createMessage(InternetAddress destiny, String subject,
            String text, Session session, String from) {
        MimeMessage message = new MimeMessage(session);
        try {
            message.setFrom(new InternetAddress(from));
            message.addRecipient(Message.RecipientType.TO, destiny);
            message.setSubject(subject);
            message.setText(text);
        } catch (AddressException e) {
            e.printStackTrace();
        } catch (MessagingException e) {
            e.printStackTrace();
        }
        return message;
    }
}