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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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*/ |
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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 as soon as one requirement is not met |
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return false; |
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} |
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} |
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return true; |
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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, $requirement = []) { |
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$selectedItemValues = $this->getSelectedItemValues($facet, $requirement['facet']); |
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$csvActiveFacetItemValues = implode(', ', $selectedItemValues); |
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$requirementValues = GeneralUtility::trimExplode(',', $requirement['values']); |
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foreach ($requirementValues as $value) { |
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$noFacetOptionSelectedRequirementMet = ($value === '__none' && empty($selectedItemValues)); |
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$anyFacetOptionSelectedRequirementMet = ($value === '__any' && !empty($selectedItemValues)); |
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if ($noFacetOptionSelectedRequirementMet || $anyFacetOptionSelectedRequirementMet || in_array($value, $selectedItemValues) || fnmatch($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 getSelectedItemValues(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 $item */ |
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if ($item->getSelected()) { |
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$itemValues[] = $item->getUriValue(); |
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} |
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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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} |
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