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<?php
/**
* quicksearch.php - trails-controller for delivering search-suggestions
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* @author Rasmus <fuhse@data-quest.de>
* @license http://www.gnu.org/licenses/gpl-2.0.html GPL version 2
* @category Stud.IP
*/
/**
* Controller for the ajax-response of the QuickSearch class found in
* lib/classes/QuickSearch.php
*/
class QuicksearchController extends AuthenticatedController
{
/**
* the one action which is called by the QuickSearch-form when typed in
* by user.
*
* @param string query_id first argument of url -> id of query in session
*/
public function response_action($query_id)
{
try {
$needle = Request::get('request');
$form_data = iterator_to_array(Request::getInstance());
$this->search = QuickSearch::getFromSession($query_id);
$results = $this->getResults($needle, $form_data);
$this->render_json($results);
} catch (Exception $e) {
$this->set_status(500);
$this->render_text($e->getMessage());
}
}
/**
* Highlights the given needle in given subject with the given format.
*
* @param String $needle Search for this string...
* @param String $subject ...inside this string...
* @param String $format ...and replace it with this string (regexp
* syntax)
*
* @return String containing the subject with highlighted needle
*/
private function highlight($needle, $subject, $format = '<b>$0</b>')
{
$needle = htmlReady($needle);
$subject = htmlReady($subject);
$regexp = '/' . preg_quote($needle, '/') . '/i';
return preg_replace($regexp, $format, $subject);
}
/**
* private method to get a result-array in the way of array(array(item_id, item-name)).
*
* @param String $needle The search keyword typed by the user.
* @param array $form_data Additonal form data
*
* @return array of matched records
*/
private function getResults($needle, $form_data)
{
if (!$this->search instanceof SearchType) {
throw new Exception(_('Session abgelaufen oder unbekannter Suchtyp'));
}
$limit = 10;
if ($this->search instanceof StandardSearch && $this->search->search === 'username') {
$limit = 50;
}
$results = $this->search->getResults($needle, $form_data, $limit);
$output = [];
foreach ($results as $result) {
$formatted = [
'item_id' => $result[0],
'item_name' => $this->highlight($needle, $result[1]),
'item_description' => '',
'item_search_name' => $result[1],
];
if ($this->search instanceof StandardSearch && $this->search->extendedLayout) {
$formatted['item_name'] = $this->search->getAvatarImageTag($result[0], Avatar::MEDIUM, ['title' => '']) . $formatted['item_name'];
if (!empty($result[3])) {
$formatted['item_description'] = sprintf('%s (%s)', $result[2], $result[3]);
} else {
$formatted['item_description'] = $result[2] ?? '';
}
} else if ($this->search instanceof SearchType) {
$formatted['item_name'] = $this->search->getAvatarImageTag($result[0], Avatar::SMALL, ['title' => '']) . $formatted['item_name'];
}
$output[] = $formatted;
}
return $output;
}
}
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