<?php
/*
 +-----------------------------------------------------------------------+
 | steps/mail/search.inc                                                 |
 |                                                                       |
 | Search functions for rc webmail                                       |
 |                                                                       |
 | Licensed under the GNU General Public License version 3 or            |
 | any later version with exceptions for skins & plugins.                |
 | See the README file for a full license statement.                     |
 |                                                                       |
 +-----------------------------------------------------------------------+
 | Author: Benjamin Smith <defitro@gmail.com>                            |
 |         Thomas Bruederli <roundcube@gmail.com>                        |
 +-----------------------------------------------------------------------+
*/

$REMOTE_REQUEST = TRUE;

// reset list_page and old search results
$RCMAIL->storage->set_page(1);
$RCMAIL->storage->set_search_set(NULL);
$_SESSION['page'] = 1;

// using encodeURI with javascript "should" give us
// a correctly encoded query string
$imap_charset = RCMAIL_CHARSET;

// get search string
$str     = get_input_value('_q', RCUBE_INPUT_GET, true);
$mbox    = get_input_value('_mbox', RCUBE_INPUT_GET, true);
$filter  = get_input_value('_filter', RCUBE_INPUT_GET);
$headers = get_input_value('_headers', RCUBE_INPUT_GET);
$subject = array();

$search_request = md5($mbox.$filter.$str);

// add list filter string
$search_str = $filter && $filter != 'ALL' ? $filter : '';

$_SESSION['search_filter'] = $filter;

// Check the search string for type of search
if (preg_match("/^from:.*/i", $str))
{
  list(,$srch) = explode(":", $str);
  $subject['from'] = "HEADER FROM";
}
else if (preg_match("/^to:.*/i", $str))
{
  list(,$srch) = explode(":", $str);
  $subject['to'] = "HEADER TO";
}
else if (preg_match("/^cc:.*/i", $str))
{
  list(,$srch) = explode(":", $str);
  $subject['cc'] = "HEADER CC";
}
else if (preg_match("/^bcc:.*/i", $str))
{
  list(,$srch) = explode(":", $str);
  $subject['bcc'] = "HEADER BCC";
}
else if (preg_match("/^subject:.*/i", $str))
{
  list(,$srch) = explode(":", $str);
  $subject['subject'] = "HEADER SUBJECT";
}
else if (preg_match("/^body:.*/i", $str))
{
  list(,$srch) = explode(":", $str);
  $subject['body'] = "BODY";
}
else if (strlen(trim($str)))
{
  if ($headers) {
    foreach (explode(',', $headers) as $header) {
      if ($header == 'text') {
        // #1488208: get rid of other headers when searching by "TEXT"
        $subject = array('text' => 'TEXT');
        break;
      }
      else {
        $subject[$header] = ($header != 'body' ? 'HEADER ' : '') . strtoupper($header);
      }
    }

    // save search modifiers for the current folder to user prefs
    $search_mods = $RCMAIL->config->get('search_mods', $SEARCH_MODS_DEFAULT);
    $search_mods[$mbox] = array_fill_keys(array_keys($subject), 1);
    $RCMAIL->user->save_prefs(array('search_mods' => $search_mods));
  }
  else {
    // search in subject by default
    $subject['subject'] = 'HEADER SUBJECT';
  }
}

$search = isset($srch) ? trim($srch) : trim($str);

if (!empty($subject)) {
  $search_str .= str_repeat(' OR', count($subject)-1);
  foreach ($subject as $sub)
    $search_str .= ' ' . $sub . ' ' . rcube_imap_generic::escape($search);
}

$search_str  = trim($search_str);
$sort_column = rcmail_sort_column();

// execute IMAP search
if ($search_str)
  $RCMAIL->storage->search($mbox, $search_str, $imap_charset, $sort_column);

// save search results in session
if (!is_array($_SESSION['search']))
  $_SESSION['search'] = array();

if ($search_str) {
  $_SESSION['search'] = $RCMAIL->storage->get_search_set();
  $_SESSION['last_text_search'] = $str;
}
$_SESSION['search_request'] = $search_request;


// Get the headers
$result_h = $RCMAIL->storage->list_messages($mbox, 1, $sort_column, rcmail_sort_order());
$count = $RCMAIL->storage->count($mbox, $RCMAIL->storage->get_threading() ? 'THREADS' : 'ALL');

// Add 'folder' column to list
if ($multi_folder_search) {
  $a_show_cols = $_SESSION['list_attrib']['columns'] ? $_SESSION['list_attrib']['columns'] : (array)$CONFIG['list_cols'];
  if (!in_array($a_show_cols))
    $a_show_cols[] = 'folder';

  // make message UIDs unique by appending the folder name
  foreach ($result_h as $i => $header) {
    $header->uid .= '-'.$header->folder;
    if ($header->parent_uid)
      $header->parent_uid .= '-'.$header->folder;
  }
}

// Make sure we got the headers
if (!empty($result_h)) {
  rcmail_js_message_list($result_h, false, $a_show_cols);
  if ($search_str)
    $OUTPUT->show_message('searchsuccessful', 'confirmation', array('nr' => $RCMAIL->storage->count(NULL, 'ALL')));
}
// handle IMAP errors (e.g. #1486905)
else  if ($err_code = $RCMAIL->storage->get_error_code()) {
  rcmail_display_server_error();
}
else {
  $OUTPUT->show_message('searchnomatch', 'notice');
}

// update message count display
$OUTPUT->set_env('search_request', $search_str ? $search_request : '');
$OUTPUT->set_env('messagecount', $count);
$OUTPUT->set_env('pagecount', ceil($count/$RCMAIL->storage->get_pagesize()));
$OUTPUT->set_env('exists', $RCMAIL->storage->count($mbox_name, 'EXISTS'));
$OUTPUT->command('set_rowcount', rcmail_get_messagecount_text($count, 1), $mbox);
$OUTPUT->send();