FooterProvider.php

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<?php

declare(strict_types=1);

namespace ILIAS\LegalDocuments\GlobalScreen;

use ILIAS\LegalDocuments\Conductor;
use ILIAS\DI\Container;
use ILIAS\GlobalScreen\Scope\MetaBar\Provider\AbstractStaticFooterProvider;
use ILIAS\UI\Factory as UIFactory;
use ILIAS\GlobalScreen\Identification\IdentificationInterface as Id;
use ilFooterStandardGroupsProvider;
use ilFooterStandardGroups;
use Closure;
use ILIAS\UI\Component\Modal\Modal;
use ILIAS\GlobalScreen\Scope\Footer\Factory\isItem;

class FooterProvider extends AbstractStaticFooterProvider
{
    private readonly Id $parent_id;
    private readonly Conductor $ldoc;

    public function __construct(Container $dic)
    {
        parent::__construct($dic);
        $this->parent_id = (new ilFooterStandardGroupsProvider($dic))->getIdentificationFor(ilFooterStandardGroups::LEGAL_INFORMATION);
        $this->ldoc = $dic['legalDocuments'];
    }

    public function getGroups(): array
    {
        return [];
    }

    public function getEntries(): array
    {
        return array_map(
            fn(array $args) => $this->item(...$args),
            $this->ldoc->modifyFooter($this->collect([]))()
        );
    }

    private function collect(array $items): Closure
    {
        return function (...$args) use ($items) {
            if ($args === []) {
                return $items;
            }
            return $this->collect(array_merge($items, [$args]));
        };
    }

    private function item(string $id, string $title, object $obj): isItem
    {
        return $obj instanceof Modal ?
            $this->item_factory->modal($this->id_factory->identifier($id), $title, $obj)->withParent($this->parent_id) :
            $this->item_factory->link($this->id_factory->identifier($id), $title)->withAction($obj);
    }
}