Parser.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\MetaData\OERExposer\OAIPMH\Requests;
 
use ILIAS\MetaData\OERExposer\OAIPMH\Requests\Argument;
use ILIAS\MetaData\OERExposer\OAIPMH\HTTP\WrapperInterface as HTTPWrapper;
use ILIAS\MetaData\OERExposer\OAIPMH\Requests\Verb;
use ILIAS\MetaData\OERExposer\OAIPMH\Requests\RequestInterface;
use ILIAS\MetaData\OERExposer\OAIPMH\Requests\Request;
use ILIAS\Data\URI;
 
class Parser implements ParserInterface
{
    protected HTTPWrapper $http;
 
    public function __construct(HTTPWrapper $http)
    {
        $this->http = $http;
    }
 
    public function parseFromHTTP(URI $base_url): RequestInterface
    {
        $verb = Verb::NULL;
        if ($this->http->requestHasArgument(Argument::VERB)) {
            $verb = Verb::tryFrom($this->http->retrieveArgumentFromRequest(Argument::VERB)) ?? Verb::NULL;
        }
 
        $request = $this->getEmptyRequest($verb, $base_url);
 
        foreach (Argument::cases() as $argument) {
            if (
                $argument === Argument::VERB ||
                !$this->http->requestHasArgument($argument)
            ) {
                continue;
            }
            $request = $request->withArgument(
                $argument,
                rawurldecode($this->http->retrieveArgumentFromRequest($argument))
            );
        }
 
        return $request;
    }
 
    protected function getEmptyRequest(Verb $verb, URI $base_url): RequestInterface
    {
        return new Request(
            $base_url,
            $verb
        );
    }
}