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<?php
namespace Shaarli\Api\Controllers;
use Shaarli\Api\ApiUtils;
use Shaarli\Api\Exceptions\ApiBadParametersException;
use Slim\Http\Request;
use Slim\Http\Response;
/**
* Class Links
*
* REST API Controller: all services related to links collection.
*
* @package Api\Controllers
* @see http://shaarli.github.io/api-documentation/#links-links-collection
*/
class Links extends ApiController
{
/**
* @var int Number of links returned if no limit is provided.
*/
public static $DEFAULT_LIMIT = 20;
/**
* Retrieve a list of links, allowing different filters.
*
* @param Request $request Slim request.
* @param Response $response Slim response.
*
* @return Response response.
*
* @throws ApiBadParametersException Invalid parameters.
*/
public function getLinks($request, $response)
{
$private = $request->getParam('private');
$links = $this->linkDb->filterSearch(
[
'searchtags' => $request->getParam('searchtags', ''),
'searchterm' => $request->getParam('searchterm', ''),
],
false,
// to updated in another PR depending on the API doc
($private === 'true' || $private === '1') ? 'private' : 'all'
);
// Return links from the {offset}th link, starting from 0.
$offset = $request->getParam('offset');
if (! empty($offset) && ! ctype_digit($offset)) {
throw new ApiBadParametersException('Invalid offset');
}
$offset = ! empty($offset) ? intval($offset) : 0;
if ($offset > count($links)) {
return $response->withJson([], 200, $this->jsonStyle);
}
// limit parameter is either a number of links or 'all' for everything.
$limit = $request->getParam('limit');
if (empty($limit)) {
$limit = self::$DEFAULT_LIMIT;
}
else if (ctype_digit($limit)) {
$limit = intval($limit);
} else if ($limit === 'all') {
$limit = count($links);
} else {
throw new ApiBadParametersException('Invalid limit');
}
// 'environment' is set by Slim and encapsulate $_SERVER.
$index = index_url($this->ci['environment']);
$out = [];
$cpt = 0;
foreach ($links as $link) {
if (count($out) >= $limit) {
break;
}
if ($cpt++ >= $offset) {
$out[] = ApiUtils::formatLink($link, $index);
}
}
return $response->withJson($out, 200, $this->jsonStyle);
}
}
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