Passed
Push — master ( 4877e0...70b946 )
by Timo
18:59
created

RequirementsService::getAllRequirementsMet()   B

Complexity

Conditions 5
Paths 4

Size

Total Lines 19
Code Lines 10

Duplication

Lines 0
Ratio 0 %

Importance

Changes 1
Bugs 0 Features 0
Metric Value
dl 0
loc 19
rs 8.8571
c 1
b 0
f 0
cc 5
eloc 10
nc 4
nop 1
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<?php
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namespace ApacheSolrForTypo3\Solr\Domain\Search\ResultSet\Facets;
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/*
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 * This file is part of the TYPO3 CMS project.
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 *
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 * It is free software; you can redistribute it and/or modify it under
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 * the terms of the GNU General Public License, either version 2
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 * of the License, or any later version.
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 *
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 * For the full copyright and license information, please read the
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 * LICENSE.txt file that was distributed with this source code.
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 *
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 * The TYPO3 project - inspiring people to share!
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 */
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use TYPO3\CMS\Core\Utility\GeneralUtility;
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/**
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 * Service class to check for a facet if allRequirements are met for that facet.
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 *
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 * @author Timo Hund <[email protected]>
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 * @package ApacheSolrForTypo3\Solr\Domain\Search\ResultSet\Facet
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 */
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class RequirementsService
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{
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    /**
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     * Checks if facet meets all requirements.
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     *
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     * Evaluates configuration in "plugin.tx_solr.search.faceting.facets.[facetName].requirements",
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     *
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     * @param AbstractFacet $facet
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     * @return bool true if facet might be rendered
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     */
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    public function getAllRequirementsMet(AbstractFacet $facet)
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    {
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        $requirements = $facet->getRequirements();
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        if (!is_array($requirements) || count($requirements) === 0) {
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            return true;
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        }
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        foreach ($requirements as $requirement) {
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            $requirementMet = $this->getRequirementMet($facet, $requirement);
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            $requirementMet = $this->getNegationWhenConfigured($requirementMet, $requirement);
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            if ($requirementMet) {
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                // early return
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                return true;
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            }
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        }
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        return false;
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    }
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    /**
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     * Checks if a single requirement is met.
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     *
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     * @param AbstractFacet $facet
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     * @param array $requirement
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     * @return bool
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     */
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    protected function getRequirementMet(AbstractFacet $facet, $requirement = []) {
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        $activeFacetItemValues = $this->getActiveItemValues($facet, $requirement['facet']);
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        $csvActiveFacetItemValues = implode(', ', $activeFacetItemValues);
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        $requirementValues = GeneralUtility::trimExplode(',', $requirement['values']);
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        foreach ($requirementValues as $value) {
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            $noFacetOptionSelectedRequirementMet = ($value === '__none' && empty($activeFacetItemValues));
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            $anyFacetOptionSelectedRequirementMet = ($value === '__any' && !empty($activeFacetItemValues));
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            if ($noFacetOptionSelectedRequirementMet || $anyFacetOptionSelectedRequirementMet || in_array($value, $activeFacetItemValues) || fnmatch($value, $csvActiveFacetItemValues)) {
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                // when we find a single matching requirement we can exit and return true
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                return true;
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            }
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        }
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        return false;
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    }
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    /**
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     * Returns the active item values of a facet
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     *
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     * @param string $facetNameToCheckRequirementsOn
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     * @return AbstractFacetItem[]
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     */
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    protected function getActiveItemValues(AbstractFacet $facet, $facetNameToCheckRequirementsOn)
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    {
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        $facetToCheckRequirements = $facet->getResultSet()->getFacets()->getByName($facetNameToCheckRequirementsOn)->getByPosition(0);
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        if (!$facetToCheckRequirements instanceof AbstractFacet) {
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            throw new \InvalidArgumentException('Requirement for unexisting facet configured');
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        }
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        if (!$facetToCheckRequirements->getIsUsed()) {
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            // unused facets do not have active values.
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            return [];
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        }
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        $itemValues = [];
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        $activeFacetItems = $facetToCheckRequirements->getAllFacetItems();
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        foreach ($activeFacetItems as $item) {
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            /** @var AbstractFacetItem $item */
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            $itemValues[] = $item->getUriValue();
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        }
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        return $itemValues;
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    }
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    /**
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     * Negates the result when configured.
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     *
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     * @param boolean $value
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     * @param array $configuration
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     * @return boolean
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     */
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    protected function getNegationWhenConfigured($value, $configuration)
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    {
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        if (!is_array($configuration) || empty($configuration['negate']) || (bool)$configuration['negate'] === false) {
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            return $value;
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        }
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        return !((bool)$value);
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    }
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}