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<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
declare(strict_types=1);

namespace Magento\TwoFactorAuth\Setup\Patch\Data;

use Magento\Framework\App\Config\ConfigResource\ConfigInterface;
use Magento\Framework\App\Config\ScopeConfigInterface;
use Magento\Framework\Setup\ModuleDataSetupInterface;
use Magento\Framework\Setup\Patch\DataPatchInterface;
use Magento\TwoFactorAuth\Model\Provider\Engine\DuoSecurity;

/**
 * Generate initial duo security key
 */
class GenerateDuoSecurityKey implements DataPatchInterface
{
    /**
     * @var ModuleDataSetupInterface
     */
    private $moduleDataSetup;

    /**
     * @var ConfigInterface
     */
    private $config;

    /**
     * @var ScopeConfigInterface
     */
    private $scopeConfig;

    /**
     * @param ModuleDataSetupInterface $moduleDataSetup
     * @param ConfigInterface $config
     * @param ScopeConfigInterface $scopeConfig
     */
    public function __construct(
        ModuleDataSetupInterface $moduleDataSetup,
        ConfigInterface $config,
        ScopeConfigInterface $scopeConfig
    ) {
        $this->moduleDataSetup = $moduleDataSetup;
        $this->config = $config;
        $this->scopeConfig = $scopeConfig;
    }

    /**
     * Create and set the duo key
     *
     * @SuppressWarnings(PHPMD.ExcessiveMethodLength)
     * @SuppressWarnings(PHPMD.CyclomaticComplexity)
     * @SuppressWarnings(PHPMD.NPathComplexity)
     */
    public function apply()
    {
        $this->moduleDataSetup->startSetup();

        if (!$this->scopeConfig->getValue(DuoSecurity::XML_PATH_APPLICATION_KEY)) {
            // Generate random duo security key
            $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
            $charactersLength = strlen($characters);
            $randomString = '';
            for ($i = 0; $i < 64; $i++) {
                $randomString .= $characters[random_int(0, $charactersLength - 1)];
            }

            $this->config->saveConfig(DuoSecurity::XML_PATH_APPLICATION_KEY, $randomString, 'default', 0);
        }

        $this->moduleDataSetup->endSetup();

        return $this;
    }

    /**
     * @inheritdoc
     */
    public static function getDependencies()
    {
        return [
            CopyConfigFromOldModule::class
        ];
    }

    /**
     * @inheritdoc
     */
    public function getAliases()
    {
        return [];
    }
}