Mcustiel\Phiremock\Server\Utils\Strategies\Utils\RegexReplacer

Complexity

Total Complexity

15

Size/Duplication

Total Lines	100
Duplicated Lines	0 %

Importance

Changes	1
Bugs	0	Features	1

7 Methods

Rating	Name	Duplication	Size	Complexity
A	replaceMatches()	0	17	2
A	getUri()	0	10	2
A	bodyConditionIsRegex()	0	4	2
A	replaceMatchesInBody()	0	18	3
A	fillWithUrlMatches()	0	15	2
A	fillWithBodyMatches()	0	15	2
A	urlConditionIsRegex()	0	4	2

<?php
/**
 * This file is part of Phiremock.
 *
 * Phiremock is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Phiremock is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Phiremock.  If not, see <http://www.gnu.org/licenses/>.
 */

namespace Mcustiel\Phiremock\Server\Utils\Strategies\Utils;

use Mcustiel\Phiremock\Domain\Condition\MatchersEnum;
use Mcustiel\Phiremock\Domain\Expectation;
use Psr\Http\Message\ServerRequestInterface;

class RegexReplacer
{
    const PLACEHOLDER_BODY = 'body';
    const PLACEHOLDER_URL = 'url';

    public function fillWithBodyMatches(
        Expectation $expectation,
        ServerRequestInterface $httpRequest,
        string $text
    ): string {
        if ($this->bodyConditionIsRegex($expectation)) {
            $text = $this->replaceMatches(
                self::PLACEHOLDER_BODY,
                $expectation->getRequest()->getBody()->getValue()->asString(),
                $httpRequest->getBody()->__toString(),
                $text
            );
        }

        return $text;
    }

    public function fillWithUrlMatches(
        Expectation $expectation,
        ServerRequestInterface $httpRequest,
        string $text
    ): string {
        if ($this->urlConditionIsRegex($expectation)) {
            return $this->replaceMatches(
                self::PLACEHOLDER_URL,
                $expectation->getRequest()->getUrl()->getValue()->asString(),
                $this->getUri($httpRequest),
                $text
            );
        }

        return $text;
    }

    private function getUri(ServerRequestInterface $httpRequest): string
    {
        $path = ltrim($httpRequest->getUri()->getPath(), '/');
        $query = $httpRequest->getUri()->getQuery();
        $return = '/' . $path;
        if ($query) {
            $return .= '?' . $httpRequest->getUri()->getQuery();
        }

        return $return;
    }

    private function urlConditionIsRegex(Expectation $expectation): bool
    {
        return $expectation->getRequest()->getUrl()
            && MatchersEnum::MATCHES === $expectation->getRequest()->getUrl()->getMatcher()->getName();
    }

    private function bodyConditionIsRegex(Expectation $expectation): bool
    {
        return $expectation->getRequest()->getBody()
            && MatchersEnum::MATCHES === $expectation->getRequest()->getBody()->getMatcher()->getName();
    }

    private function replaceMatches(
        string $type, string $pattern, string $subject, string $destination): string
    {
        $matches = [];

        $matchCount = preg_match_all(
            $pattern,
            $subject,
            $matches
        );
        if ($matchCount > 0) {
            // we don't need full matches
            unset($matches[0]);
            $destination = $this->replaceMatchesInBody($matches, $type, $destination);
        }

        return $destination;
    }

    private function replaceMatchesInBody(array $matches, string $type, string $responseBody): string
    {
        $search = [];
        $replace = [];

        foreach ($matches as $matchGroupId => $matchGroup) {
            // add first element as replacement for $(type.index)
            $search[] = "\${{$type}.{$matchGroupId}}";
            $replace[] = reset($matchGroup);
            foreach ($matchGroup as $matchId => $match) {
                // fix index to start with 1 instead of 0
                ++$matchId;
                $search[] = "\${{$type}.{$matchGroupId}.{$matchId}}";
                $replace[] = $match;
            }
        }

        return str_replace($search, $replace, $responseBody);
    }
}