/*
   * This method would print FROM,TO and SUBJECT of the message
   */
  public static void writeEnvelope(Message m, MailInfo mail) throws Exception {
    log.info("This is the message envelope");
    log.info("---------------------------");
    Address[] a;

    // FROM
    if ((a = m.getFrom()) != null) {
      for (int j = 0; j < a.length; j++) {
        log.info("FROM: " + a[j].toString());
        InternetAddress adress = (InternetAddress) a[j];
        mail.setFrom(adress.getAddress());
      }
    }

    // TO
    if ((a = m.getRecipients(Message.RecipientType.TO)) != null) {
      for (int j = 0; j < a.length; j++) {
        log.info("TO: " + a[j].toString());
        mail.setTo(a[j].toString());
      }
    }

    // SUBJECT
    if (m.getSubject() != null) {
      log.info("SUBJECT: " + m.getSubject());
      mail.setSubject(m.getSubject());
    }
  }
  /*
   * This method checks for content-type
   * based on which, it processes and
   * fetches the content of the message
   */
  public static void writePart(Part p, MailInfo mailInfo) throws Exception {
    if (p instanceof Message)
      // Call methos writeEnvelope
      writeEnvelope((Message) p, mailInfo);

    log.info("----------------------------");
    log.info("CONTENT-TYPE: " + p.getContentType());

    // check if the content is plain text
    if (p.isMimeType("text/plain")) {
      log.info("This is plain text");
      log.info("---------------------------");
      log.info((String) p.getContent());

      mailInfo.setBody(p.getContent().toString());
    }
    // check if the content has attachment
    else if (p.isMimeType("multipart/*")) {
      log.info("This is a Multipart");
      log.info("---------------------------");
      Multipart mp = (Multipart) p.getContent();
      int count = mp.getCount();
      for (int i = 0; i < count; i++) writePart(mp.getBodyPart(i), mailInfo);
    }
    // check if the content is a nested message
    else if (p.isMimeType("message/rfc822")) {
      log.info("This is a Nested Message");
      log.info("---------------------------");
      writePart((Part) p.getContent(), mailInfo);
    }
    // check if the content is an inline image
    else if (p.isMimeType("image/jpeg")) {
      log.info("--------> image/jpeg");
      Object o = p.getContent();
      InputStream x = (InputStream) o;
      ByteArrayOutputStream bos = new ByteArrayOutputStream();
      IOUtils.copy(x, bos);
      NamedContent namedContent = new NamedContent();
      namedContent.setName(p.getFileName());
      namedContent.setType(p.getContentType());
      namedContent.setContent(bos.toByteArray());
      mailInfo.getAttachments().add(namedContent);
    } else if (p.isMimeType("image/png")) {
      log.info("--------> image/png");
      Object o = p.getContent();
      InputStream x = (InputStream) o;
      ByteArrayOutputStream bos = new ByteArrayOutputStream();
      IOUtils.copy(x, bos);
      NamedContent namedContent = new NamedContent();
      namedContent.setName(p.getFileName());
      namedContent.setType(p.getContentType());
      namedContent.setContent(bos.toByteArray());
      mailInfo.getAttachments().add(namedContent);
    } else if (p.getContentType().contains("image/")) {
      log.info("content type" + p.getContentType());
      File f = new File("image" + new Date().getTime() + ".jpg");
      DataOutputStream output =
          new DataOutputStream(new BufferedOutputStream(new FileOutputStream(f)));
      com.sun.mail.util.BASE64DecoderStream test =
          (com.sun.mail.util.BASE64DecoderStream) p.getContent();
      byte[] buffer = new byte[1024];
      int bytesRead;
      while ((bytesRead = test.read(buffer)) != -1) {
        output.write(buffer, 0, bytesRead);
      }
    } else {
      Object o = p.getContent();
      if (o instanceof String) {
        log.info("This is a string");
        log.info("---------------------------");
        log.info((String) o);
      } else if (o instanceof InputStream) {
        log.info("This is just an input stream");
        log.info("---------------------------");
        InputStream is = (InputStream) o;
        is = (InputStream) o;
        int c;
        while ((c = is.read()) != -1) System.out.write(c);
      } else {
        log.info("This is an unknown type");
        log.info("---------------------------");
        log.info(o.toString());
      }
    }
  }