RefererUrlResolver::getAbsoluteUrl()   A
last analyzed

Complexity

Conditions 6
Paths 5

Size

Total Lines 19
Code Lines 10

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 11
CRAP Score 6

Importance

Changes 0
Metric Value
cc 6
eloc 10
nc 5
nop 1
dl 0
loc 19
ccs 11
cts 11
cp 1
crap 6
rs 9.2222
c 0
b 0
f 0
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<?php
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/*
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 * This file is part of the Silverback API Components Bundle Project
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 *
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 * (c) Daniel West <[email protected]>
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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declare(strict_types=1);
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namespace Silverback\ApiComponentsBundle\Helper;
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use Silverback\ApiComponentsBundle\Exception\InvalidArgumentException;
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use Silverback\ApiComponentsBundle\Exception\UnparseableRequestHeaderException;
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use Symfony\Component\HttpFoundation\RequestStack;
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/**
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 * @author Daniel West <[email protected]>
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 */
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class RefererUrlResolver
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{
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    private RequestStack $requestStack;
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    public function __construct(RequestStack $requestStack)
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    {
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        $this->requestStack = $requestStack;
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    }
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    public function getAbsoluteUrl($path): string
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    {
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        if (str_contains($path, '://') || str_starts_with($path, '//')) {
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            return $path;
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        }
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        $request = $this->requestStack->getMainRequest();
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        if (!$request) {
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            throw new InvalidArgumentException('To generate an absolute URL to the referrer, there must be a valid master request');
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        }
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        if (null !== ($origin = $request->headers->get('origin', null))) {
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            return $this->concatPathToUrl($origin, $path, 'origin');
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        }
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        if (null !== ($referer = $request->headers->get('referer', null))) {
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            return $this->concatPathToUrl($referer, $path, 'referer');
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        }
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        throw new UnparseableRequestHeaderException('To generate an absolute URL to the referrer, the request must have a `origin` or `referer` header present');
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    }
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    private function concatPathToUrl(string $origin, string $path, string $headerName): string
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    {
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        return $this->getUrlPrefix($origin, $headerName) . '/' . ltrim($path, '/');
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    }
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    private function getUrlPrefix(string $url, string $headerName): string
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    {
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        $defaults = [
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            'host' => null,
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            'scheme' => null,
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            'port' => null,
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        ];
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        [
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            'host' => $host,
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            'scheme' => $scheme,
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            'port' => $port
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        ] = array_merge($defaults, parse_url($url) ?: []);
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        if (null === $host) {
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            throw new UnparseableRequestHeaderException(sprintf('Could not extract `host` while parsing the `%s` header', $headerName));
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        }
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        if (null === $scheme) {
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            throw new UnparseableRequestHeaderException(sprintf('Could not extract `scheme` while parsing the `%s` header', $headerName));
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        }
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        $url = $scheme . '://' . $host;
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        if ($port && (('https' === $scheme && 443 !== $port) || ('http' === $scheme && 80 !== $port))) {
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            $url .= ':' . $port;
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        }
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        return $url;
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    }
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}
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