ConcealInProduction.php

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<?php
declare(strict_types=1);

namespace Magento\Config\Model\Config\Structure\ElementVisibility;

use Magento\Config\Model\Config\Structure\ElementVisibilityInterface;
use Magento\Framework\App\State;

class ConcealInProduction implements ElementVisibilityInterface
{
    private $configs = [];

    private $state;

    private $exemptions = [];

    public function __construct(State $state, array $configs = [], array $exemptions = [])
    {
        $this->state = $state;
        $this->configs = $configs;
        $this->exemptions = $exemptions;
    }

    public function isHidden($path)
    {
        $path = $this->normalizePath($path);
        if ($this->state->getMode() === State::MODE_PRODUCTION
            && preg_match('/(?<group>(?<section>.*?)\/.*?)\/.*?/', $path, $match)) {
            $group = $match['group'];
            $section = $match['section'];
            $exemptions = array_keys($this->exemptions);
            $checkedItems = [];
            foreach ([$path, $group, $section] as $itemPath) {
                $checkedItems[] = $itemPath;
                if (!empty($this->configs[$itemPath])) {
                    return $this->configs[$itemPath] === static::HIDDEN
                        && empty(array_intersect($checkedItems, $exemptions));
                }
            }
        }

        return false;
    }

    public function isDisabled($path)
    {
        $path = $this->normalizePath($path);
        if ($this->state->getMode() === State::MODE_PRODUCTION) {
            while (true) {
                if (!empty($this->configs[$path])) {
                    return $this->configs[$path] === static::DISABLED;
                }

                $position = strripos($path, '/');
                if ($position === false) {
                    break;
                }
                $path = substr($path, 0, $position);
            }
        }

        return false;
    }

    private function normalizePath($path)
    {
        return trim($path, '/');
    }
}