package su.vistar.gps.report.reportcontrol;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.logging.Level;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.*;
import javax.mail.internet.*;
import javax.mail.Authenticator;
import su.vistar.gps.report.jgpsreport.JGpsrepApp;
import su.vistar.gps.report.jgpsreport.Logging;
import su.vistar.gps.report.jgpsreport.Settings;
import su.vistar.gps.report.jgpsreport.db.entities.PublisherParameterEntity;
import su.vistar.gps.report.jgpsreport.db.entities.SubjectEntity;
import su.vistar.logging.LoggerManager;
import su.vistar.logging.helpers.Num2Dec;

/**
 * Отправка отчета по почте.
 *
 * @author Irina Nenahova (irina.lkjh@gmail.com)
 */
public class EmailReportPublisher extends ReportPublisher {

    /** Идентификационный номер отчета(сгенерированного). */
    private final long doneReportId;
    /** id эл.адреса. */
    private final long emailId;
    /** Параметры настройки соединения с SMTP сервером. */
    private final Properties props;
    /** id в таблице publication_config
     * (для записи об ошибке публикации) */
    private final long publishConfigId;
    /** тема письма с отчетом*/
    private final String subject;


    /** Система логов. */
    public static final Logging logging = new Logging();
    /** Логгер. */
    private static final LoggerManager log = new LoggerManager(EmailReportPublisher.class);


    public EmailReportPublisher(PublisherParameterEntity publisher)
            throws FileNotFoundException, IOException {
        this.props = Settings.emailProps;
        this.doneReportId = publisher.getDoneReportId();
        this.emailId = publisher.getDestinationId();
        this.publishConfigId = publisher.getPublisherConfigId();
        this.subject = this.getSubject();
    }

    @Override
    public void publish() throws PublishException {
        try {
            String adr = JGpsrepApp.reportControl.getEmail(emailId);
            String fileReportName = JGpsrepApp.reportControl.getReportFileName(doneReportId);

            log.log(Level.INFO, "Публикация {0} отчета по email (адрес: {1}, файл: {2})",
                    new Num2Dec(doneReportId), adr, fileReportName);

            SecurityManager security = System.getSecurityManager();

            Authenticator auth = new SMTPAuthenticator();
            Session mailSession = Session.getDefaultInstance(props, auth);

            Transport transport = mailSession.getTransport();

            MimeMessage message = new MimeMessage(mailSession);

            // адрес назначения
            message.setFrom(new InternetAddress(props.getProperty("mail.smtp.user")));
            message.addRecipients(Message.RecipientType.TO, adr);

            message.setSubject(subject);
            MimeBodyPart mbp1 = new MimeBodyPart();
            mbp1.setText("");

            MimeBodyPart mbp2 = new MimeBodyPart();
            FileDataSource fds = new FileDataSource(fileReportName);
            mbp2.setDataHandler(new DataHandler(fds));
            mbp2.setFileName(fds.getName());

            Multipart mp = new MimeMultipart();
            mp.addBodyPart(mbp1);
            mp.addBodyPart(mbp2);

            message.setContent(mp);

            transport.connect();
            transport.sendMessage(message,
                    message.getRecipients(Message.RecipientType.TO));
            transport.close();
        } catch (Exception ex) {
            throw new PublishException("Ошибка при отпраке отчета по email", ex);
        }
    }

    private class SMTPAuthenticator extends javax.mail.Authenticator {

        public PasswordAuthentication getPasswordAuthentication() {
            String username = props.getProperty("mail.smtp.user");
            String password = props.getProperty("mail.smtp.pwd");
            return new PasswordAuthentication(username, password);
        }
    }

    private String getSubject(){
        StringBuilder subj = new StringBuilder();
        subj.append("отчет системы Vistar ");
        SubjectEntity par = JGpsrepApp.reportControl.getParameterForSubject(doneReportId);

        if(par!=null){
            subj.append("для маршрута ");
            subj.append(par.routeId);
            subj.append(" за ");

            String dateFormat = "dd-MM-yyyy";
            SimpleDateFormat sdf = new SimpleDateFormat(dateFormat);
            String dateStr = sdf.format(par.date);
            subj.append(dateStr);
        }
        return subj.toString();
    }
}