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<?php
namespace Shaarli\Api\Controllers;
use Shaarli\Api\Exceptions\ApiBadParametersException;
use Slim\Http\Request;
use Slim\Http\Response;
/**
* Class History
*
* REST API Controller: /history
*
* @package Shaarli\Api\Controllers
*/
class HistoryController extends ApiController
{
/**
* Service providing operation regarding Shaarli datastore and settings.
*
* @param Request $request Slim request.
* @param Response $response Slim response.
*
* @return Response response.
*
* @throws ApiBadParametersException Invalid parameters.
*/
public function getHistory($request, $response)
{
$history = $this->history->getHistory();
// Return history operations from the {offset}th, starting from {since}.
$since = \DateTime::createFromFormat(\DateTime::ATOM, $request->getParam('since'));
$offset = $request->getParam('offset');
if (empty($offset)) {
$offset = 0;
} elseif (ctype_digit($offset)) {
$offset = (int) $offset;
} else {
throw new ApiBadParametersException('Invalid offset');
}
// limit parameter is either a number of links or 'all' for everything.
$limit = $request->getParam('limit');
if (empty($limit)) {
$limit = count($history);
} elseif (ctype_digit($limit)) {
$limit = (int) $limit;
} else {
throw new ApiBadParametersException('Invalid limit');
}
$out = [];
$i = 0;
foreach ($history as $entry) {
if ((! empty($since) && $entry['datetime'] <= $since) || count($out) >= $limit) {
break;
}
if (++$i > $offset) {
$out[$i] = $entry;
$out[$i]['datetime'] = $out[$i]['datetime']->format(\DateTime::ATOM);
}
}
$out = array_values($out);
return $response->withJson($out, 200, $this->jsonStyle);
}
}
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