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
{
    protected ResourceBuilder $resource_builder;
    protected int $direction = SORT_ASC;

    public function __construct(ResourceBuilder $resource_builder, int $direction = SORT_ASC)
    {
        $this->resource_builder = $resource_builder;
        $this->direction = $direction;
    }

    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;
    }
}