AbstractBaseSorter.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\ResourceStorage\Collection\Sorter;
 
use ILIAS\ResourceStorage\Collection\ResourceCollection;
use ILIAS\ResourceStorage\Resource\ResourceBuilder;
 
abstract class AbstractBaseSorter implements CollectionSorter
{
    public function __construct(protected ResourceBuilder $resource_builder, protected int $direction = SORT_ASC)
    {
    }
 
    abstract protected function sortResourceIdentification(array $identifications): array;
 
 
    public function sort(ResourceCollection $collection): ResourceCollection
    {
        $identifications = $collection->getResourceIdentifications();
        $collection->clear();
        $sorted = $this->sortResourceIdentification($identifications);
        if ($this->direction == SORT_DESC) {
            $sorted = array_reverse($sorted);
        }
        foreach ($sorted as $identification) {
            $collection->add($identification);
        }
 
        return $collection;
    }
}