<?php

/*
 +-----------------------------------------------------------------------+
 | program/steps/mail/show.inc                                           |
 |                                                                       |
 | This file is part of the RoundCube Webmail client                     |
 | Copyright (C) 2005-2008, RoundCube Dev. - Switzerland                 |
 | Licensed under the GNU GPL                                            |
 |                                                                       |
 | PURPOSE:                                                              |
 |   Display a mail message similar as a usual mail application does     |
 |                                                                       |
 +-----------------------------------------------------------------------+
 | Author: Thomas Bruederli <roundcube@gmail.com>                        |
 +-----------------------------------------------------------------------+

 $Id$

*/

$PRINT_MODE = $RCMAIL->action=='print' ? TRUE : FALSE;

// similar code as in program/steps/mail/get.inc
if ($_GET['_uid']) {
  $MESSAGE = new rcube_message(get_input_value('_uid', RCUBE_INPUT_GET));
  
  // set message charset as default
  if (!empty($MESSAGE->headers->charset))
    $IMAP->set_charset($MESSAGE->headers->charset);

  // go back to list if message not found (wrong UID)
  if (empty($MESSAGE->headers)) {
    $OUTPUT->show_message('messageopenerror', 'error');
    if ($RCMAIL->action=='preview' && template_exists('messagepreview'))
        $OUTPUT->send('messagepreview');
    else {
      $RCMAIL->action = 'list';
      return;
    }
  }
    
  $mbox_name = $IMAP->get_mailbox_name();
  
  // calculate Etag for this request
  $etag = md5($MESSAGE->uid.$mbox_name.session_id().intval($MESSAGE->headers->mdn_sent).intval($MESSAGE->is_safe).intval($PRINT_MODE));

  // allow caching, unless remote images are present
  if ((bool)$MESSAGE->is_safe)
    send_nocacheing_headers();
  else if (empty($CONFIG['devel_mode']))
    send_modified_header($_SESSION['login_time'], $etag, !$MESSAGE->headers->seen);

  $OUTPUT->set_pagetitle($MESSAGE->subject);
  
  // mark message as read
  if (!$MESSAGE->headers->seen)
  {
    $marked = $IMAP->set_flag($MESSAGE->uid, 'SEEN');
    if($RCMAIL->action == 'preview' && $marked != -1)
    {
      $OUTPUT->command('set_unread_count_from_preview', $mbox_name, $IMAP->messagecount($mbox_name, 'UNSEEN'), ($mbox_name == 'INBOX'));
      $OUTPUT->command('mark_as_read_from_preview', $MESSAGE->uid);
    }
  }

  // give message uid to the client
  $OUTPUT->set_env('uid', $MESSAGE->uid);
  $OUTPUT->set_env('safemode', $MESSAGE->is_safe);
  
  // check for unset disposition notification
  if ($MESSAGE->headers->mdn_to && !$MESSAGE->headers->mdn_sent &&
      $mbox_name != $CONFIG['drafts_mbox'] && $mbox_name != $CONFIG['sent_mbox'])
  {
    if (intval($CONFIG['mdn_requests']) === 1)
    {
      if (rcmail_send_mdn($MESSAGE->uid))
        $OUTPUT->show_message('receiptsent', 'confirmation');
    }
    else if (empty($CONFIG['mdn_requests']))
    {
      rcube_add_label('mdnrequest');
      $OUTPUT->set_env('mdn_request', true);
    }
  }


  $next = $prev = $first = $last = -1;
  // get previous, first, next and last message UID
  if ((!($_SESSION['sort_col'] == 'date' && $_SESSION['sort_order'] == 'DESC') &&
      $IMAP->get_capability('sort')) || !empty($_REQUEST['_search']))
    {
    // Only if we use custom sorting
    $a_msg_index = $IMAP->message_index(NULL, $_SESSION['sort_col'], $_SESSION['sort_order']);
 
    $MESSAGE->index = array_search((string)$MESSAGE->uid, $a_msg_index, TRUE);
    $prev = isset($a_msg_index[$MESSAGE->index-1]) ? $a_msg_index[$MESSAGE->index-1] : -1 ;
    $first = count($a_msg_index)>0 ? $a_msg_index[0] : -1;
    $next = isset($a_msg_index[$MESSAGE->index+1]) ? $a_msg_index[$MESSAGE->index+1] : -1 ;
    $last = count($a_msg_index)>0 ? $a_msg_index[count($a_msg_index)-1] : -1;
    }
  else
    {
    // this assumes that we are sorted by date_DESC
    $seq = $IMAP->get_id($MESSAGE->uid);
    $prev = $IMAP->get_uid($seq + 1);
    $first = $IMAP->get_uid($IMAP->messagecount());
    $next = $IMAP->get_uid($seq - 1);
    $last = $IMAP->get_uid(1);
    $MESSAGE->index = $IMAP->messagecount() - $seq;
    }
  
  if ($prev > 0)
    $OUTPUT->set_env('prev_uid', $prev);
  if ($first >0)
    $OUTPUT->set_env('first_uid', $first);
  if ($next > 0)
    $OUTPUT->set_env('next_uid', $next);
  if ($last >0)
    $OUTPUT->set_env('last_uid', $last);
  }


function rcmail_message_attachments($attrib)
{
  global $PRINT_MODE, $MESSAGE;
  
  $out = $ol = '';

  if (sizeof($MESSAGE->attachments)) {
    foreach ($MESSAGE->attachments as $attach_prop) {
      if ($PRINT_MODE) {
        $ol .= html::tag('li', null, sprintf("%s (%s)", Q($attach_prop->filename), Q(show_bytes($attach_prop->size))));
      }
      else {
        $ol .= html::tag('li', null,
          html::a(array(
            'href' => $MESSAGE->get_part_url($attach_prop->mime_id),
            'onclick' => sprintf(
              'return %s.command(\'load-attachment\',{part:\'%s\', mimetype:\'%s\'},this)',
              JS_OBJECT_NAME,
              $attach_prop->mime_id,
              $attach_prop->mimetype),
            ),
            Q($attach_prop->filename)));
      }
    }

    $out = html::tag('ul', $attrib, $ol, html::$common_attrib);
  } 
  
  return $out;
}


function rcmail_remote_objects_msg($attrib)
  {
  global $CONFIG, $OUTPUT;
  
  if (!$attrib['id'])
    $attrib['id'] = 'rcmremoteobjmsg';

  // allow the following attributes to be added to the <div> tag
  $attrib_str = create_attrib_string($attrib, array('style', 'class', 'id'));
  $out = '<div' . $attrib_str . ">";
  
  $out .= sprintf('%s&nbsp;<a href="#loadimages" onclick="%s.command(\'load-images\')">%s</a>',
                  Q(rcube_label('blockedimages')),
                  JS_OBJECT_NAME,
                  Q(rcube_label('showimages')));
  
  $out .= '</div>';
  
  $OUTPUT->add_gui_object('remoteobjectsmsg', $attrib['id']);
  return $out;
  }


$OUTPUT->add_handlers(array(
  'messageattachments' => 'rcmail_message_attachments',
  'blockedobjects' => 'rcmail_remote_objects_msg'));


if ($RCMAIL->action=='print' && template_exists('printmessage'))
  $OUTPUT->send('printmessage');
else if ($RCMAIL->action=='preview' && template_exists('messagepreview'))
    $OUTPUT->send('messagepreview');
else
  $OUTPUT->send('message');
?>