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<?php
/**
* GlobalSearchModule for user
*
* @author Thomas Hackl <thomas.hackl@uni-passau.de>
* @license http://www.gnu.org/licenses/gpl-2.0.html GPL version 2
* @category Stud.IP
* @since 4.1
*/
class GlobalSearchUsers extends GlobalSearchModule implements GlobalSearchFulltext
{
/**
* Returns the displayname for this module
*
* @return string
*/
public static function getName()
{
return _('Personen');
}
/**
* Transforms the search request into an sql statement, that provides the id (same as getId) as type and
* the object id, that is later passed to the filter.
*
* This function is required to make use of the mysql union parallelism
*
* @param string $search the input query string
* @param array $filter an array with search limiting filter information (e.g. 'category', 'semester', etc.)
* @return string SQL Query to discover elements for the search
*
* @todo If the signature of this method changes, the UsersIndex jsonapi
* route must also be taken into account. The route adds another
* parameter so that offset and limit can be used.
* @see \JsonApi\Routes\Users\UsersIndex::__invoke
*/
public static function getSQL($search, $filter, $limit)
{
if (!$search) {
return null;
}
// if you're no admin respect visibilty
$visQuery = '';
if (!$GLOBALS['perm']->have_perm('admin')) {
$visQuery = get_vis_query('user', 'search') . " AND ";
}
$search = str_replace(' ', '% ', $search);
$query = DBManager::get()->quote("%{$search}%");
$sql = "SELECT SQL_CALC_FOUND_ROWS user.`user_id`, user.`Vorname`, user.`Nachname`, user.`username`, `user_info`.`title_front`, `user_info`.`title_rear`
FROM `auth_user_md5` AS user
JOIN `user_info` USING (`user_id`)
LEFT JOIN `user_visibility` USING (`user_id`)
WHERE {$visQuery}
(CONCAT_WS(', ', user.`Nachname`, user.`Vorname`) LIKE {$query}
OR CONCAT_WS(' ', user.`Nachname`, user.`Vorname`, user.`Nachname`) LIKE {$query}
OR `username` LIKE {$query}
)
ORDER BY user.`Nachname`, user.`Vorname`
LIMIT " . $limit;
return $sql;
}
/**
* Returns an array of information for the found element. Following informations (key: description) are necessary
*
* - name: The name of the object
* - url: The url to send the user to when he clicks the link
*
* Additional informations are:
*
* - additional: Subtitle for the hit
* - expand: Url if the user further expands the search
* - img: Avatar for the
*
* @param array $data
* @param string $search
* @return array
*/
public static function filter($data, $search)
{
$user = User::buildExisting($data);
return [
'id' => $user->id,
'name' => self::markMany($user->getFullName(), $search),
'url' => URLHelper::getURL(
'dispatch.php/profile',
['username' => $user->username],
true
),
'additional' => self::mark($user->username, $search),
'expand' => self::getSearchURL($search),
'img' => Avatar::getAvatar($user->id)->getUrl(Avatar::MEDIUM),
];
}
/**
* Returns the URL that can be called for a full search.
*
* @param string $searchterm what to search for?
* @return string URL to the full search, containing the searchterm and the category
*/
public static function getSearchURL($searchterm)
{
return URLHelper::getURL('dispatch.php/search/globalsearch', [
'q' => $searchterm,
'category' => self::class
]);
}
/**
* Enables fulltext (MATCH AGAINST) search by creating the corresponding indices.
*/
public static function enable()
{
DBManager::get()->exec("ALTER TABLE `auth_user_md5` ADD FULLTEXT INDEX globalsearch (`username`, `Vorname`, `Nachname`)");
}
/**
* Disables fulltext (MATCH AGAINST) search by removing the corresponding indices.
*/
public static function disable()
{
DBManager::get()->exec("DROP INDEX globalsearch ON `auth_user_md5`");
}
/**
* Function to mark a querystring in a resultstring
*
* @param string $string
* @param string $query
* @return string
*/
public static function markMany($string, $query)
{
if (stripos($string, $query) !== false) {
return self::mark($string, $query);
}
// Create regexp for replacement
$chunks = preg_split('/[,\s]+/', $query, -1, PREG_SPLIT_NO_EMPTY);
rsort($chunks); // Ensure larger string will be replaced too (food <- foo)
$chunks = array_map(function ($chunk) {
return preg_quote($chunk, '/');
}, $chunks);
$regexp = '/' . implode('|', $chunks) . '/i';
return preg_replace($regexp, '<mark>$0</mark>', strip_tags($string));
}
}
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