t1gor/Robots.txt-Parser-Class

<?php declare(strict_types=1);

namespace t1gor\RobotsTxtParser\Parser\DirectiveProcessors;

use t1gor\RobotsTxtParser\Directive;

class CacheDelayProcessor extends AbstractDirectiveProcessor implements DirectiveProcessorInterface {

    public function getDirectiveName(): string {
        return Directive::CACHE_DELAY;
    }

    public function process(string $line, array & $root, string & $currentUserAgent = '*', string $prevLine = '') {
        $parts              = explode(':', $line);
        $filteredCacheDelay = filter_var($parts[1], FILTER_SANITIZE_NUMBER_FLOAT, FILTER_FLAG_ALLOW_FRACTION);

        if (false === $filteredCacheDelay) {
            $this->log('{directive} with value {faulty} dropped as invalid', [
                '{directive}' => Directive::CACHE_DELAY,
                '{faulty}'    => $parts[1],
            ]);
            return;
        }

        $root[$currentUserAgent][Directive::CACHE_DELAY] = $filteredCacheDelay;
    }
}