package su.vistar.comanager.report.mailer;

import su.vistar.comanager.report.entity.VehicleDetail;
import su.vistar.logging.LoggerManager;

import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.mail.*;
import javax.mail.internet.*;
import javax.mail.util.ByteArrayDataSource;
import java.io.ByteArrayOutputStream;
import java.io.UnsupportedEncodingException;
import java.util.List;
import java.util.Map;
import java.util.Properties;

/**
 * @author Pavel Glukhov <pavel.glukhov@vistar.su>
 * Отправитель писем по протоколу TLS
 */

public class Sender {
    @SuppressWarnings("unused")
    private static final LoggerManager log = new LoggerManager();

    private String username;
    private String password;
    private Properties props;

    public Sender(String username, String password, Properties properties) {
        this.username = username;
        this.password = password;
        this.props = properties;
    }

    public void send(String subject, String text, String toEmail, ByteArrayOutputStream report,
                     String lastName, Integer year, String month) {
        final Session session = Session.getInstance(props, new Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(username, password);
            }
        });

        try {
            final MimeMessage message = new MimeMessage(session);

            message.setHeader("Content-Type", "text/plain; charset=UTF-8");

            //от кого
            message.setFrom(new InternetAddress(username));
            //кому
            message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(toEmail));

            //Заголовок письма
            message.setSubject(subject, "UTF-8");

            //Содержимое
            message.setText(text, "UTF-8");

            // Этап тестирования
            // Формируем тело письма
            BodyPart messageBodyPart = new MimeBodyPart();

            // Наполняем его сообщением
            messageBodyPart.setText(text);

            // Create a multipar message
            Multipart multipart = new MimeMultipart();

            // Set text message part
            multipart.addBodyPart(messageBodyPart);

            messageBodyPart = new MimeBodyPart();

            final String filename; //String.format("%s %s %d (new).xls", lastName.trim(), month, year);
            try {
                filename = MimeUtility.encodeText(String.format("%s %s %d (new).xls", lastName.trim(),
                        month, year));
            } catch (UnsupportedEncodingException uex) {
                throw new IllegalArgumentException("Something wrong with filename : " +
                        String.format("%s %s %d (new).xls ", lastName.trim(), month, year), uex);
            }

            final DataSource aAttachment = new ByteArrayDataSource(report.toByteArray(), "application/vnd.ms-excel;charset=UTF-8");
            messageBodyPart.setDataHandler(new DataHandler(aAttachment));
            messageBodyPart.setFileName(filename);
            messageBodyPart.setHeader("Content-Type", "application/vnd.ms-excel;charset=UTF-8");

            multipart.addBodyPart(messageBodyPart);

            message.setContent(multipart);

            //Отправляем сообщение
            Transport.send(message);
        } catch (MessagingException e) {
            throw new RuntimeException(e);
        }
    }
}