<?php

namespace DigiComp\Menu\MenuService;

/*
 * This file is part of the DigiComp.Menu package.
 *
 * (c) digital competence
 *
 * This package is Open Source Software. For the full copyright and license
 * information, please view the LICENSE file which was distributed with this
 * source code.
 */

use Neos\Eel\EelEvaluatorInterface;
use Neos\Eel\Utility;
use Neos\Flow\Annotations as Flow;

/**
 * @Flow\Scope("singleton")
 */
class SettingsService implements ServiceInterface
{
    /**
     * @Flow\InjectConfiguration(type="Menu")
     * @var array
     */
    protected array $menuConfiguration;

    /**
     * @var array
     */
    protected array $items = [];

    #[Flow\InjectConfiguration(path: 'defaultEelContext', package: 'DigiComp.Menu')]
    protected array $defaultContext = [];

    /**
     * @Flow\Inject
     * @var EelEvaluatorInterface
     */
    protected $eelEvaluator;

    public function getItems(string $forPath = null): \Iterator
    {
        if ($forPath) {
            $items = &$this->menuConfiguration[$forPath];
        } else {
            $items = &$this->menuConfiguration;
        }
        if ($items) {
            \uasort(
                $items,
                static function ($a, $b) {
                    return $a['sorting'] > $b['sorting'];
                }
            );
        }
        foreach ($items as $itemName => &$item) {
            \array_walk_recursive(
                $item,
                fn (&$item) => $item =
                    \is_string($item) && \str_starts_with($item, '${') && \str_ends_with($item, '}')
                        ? Utility::evaluateEelExpression(
                            $item,
                            $this->eelEvaluator,
                            [...$items, 'this' => $item, 'item' => $itemName],
                            $this->defaultContext
                        )
                        : $item
            );
        }

        return new \ArrayIterator($items);
    }
}