Handler.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\MetaData\OERExposer\OAIPMH;
 
use Throwable;
use ErrorException;
use ILIAS\Data\URI;
use ilLogger;
use ILIAS\MetaData\Settings\SettingsInterface;
use ILIAS\MetaData\OERExposer\OAIPMH\HTTP\WrapperInterface as HTTPWrapper;
use ILIAS\MetaData\OERExposer\OAIPMH\Requests\ParserInterface as RequestParser;
use ILIAS\MetaData\OERExposer\OAIPMH\Responses\RequestProcessorInterface as RequestProcessor;
 
class Handler implements HandlerInterface
{
    protected readonly URI $base_url;
 
    public function __construct(
        protected ilLogger $logger,
        protected SettingsInterface $settings,
        protected HTTPWrapper $http_wrapper,
        protected RequestParser $request_parser,
        protected RequestProcessor $request_processor
    ) {
        $this->base_url = new URI(rtrim(ILIAS_HTTP_PATH, '/') . '/oai.php');
    }
 
    public function sendResponseToRequest(): void
    {
        if (!$this->settings->isOAIPMHActive()) {
            $this->http_wrapper->sendResponseAndClose(404);
            return;
        }
 
        set_error_handler(static function (int $errno, string $errstr, string $errfile, int $errline): never {
            throw new ErrorException($errstr, 0, $errno, $errfile, $errline);
        });
 
        try {
            $response = $this->request_processor->getResponseToRequest(
                $this->request_parser->parseFromHTTP($this->base_url)
            );
        } catch (Throwable $e) {
            $this->logError($e->getMessage());
            $this->http_wrapper->sendResponseAndClose(500, $e->getMessage());
            return;
        } finally {
            restore_error_handler();
        }
 
        $this->http_wrapper->sendResponseAndClose(200, '', $response);
    }
 
    protected function logError(string $message): void
    {
        $this->logger->error($message);
    }
}