EnvironmentAndFolders.php

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<?php
namespace TYPO3\CMS\Install\Controller\Action\Step;

/*
 * This file is part of the TYPO3 CMS project.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */

class EnvironmentAndFolders extends AbstractStepAction
{
    public function execute()
    {
        $folderStructureFactory = $this->objectManager->get(\TYPO3\CMS\Install\FolderStructure\DefaultFactory::class);
        $structureFacade = $folderStructureFactory->getStructure();
        $structureFixMessages = $structureFacade->fix();
        $statusUtility = $this->objectManager->get(\TYPO3\CMS\Install\Status\StatusUtility::class);
        $errorsFromStructure = $statusUtility->filterBySeverity($structureFixMessages, 'error');

        if (@is_dir(PATH_typo3conf)) {
            $configurationManager = $this->objectManager->get(\TYPO3\CMS\Core\Configuration\ConfigurationManager::class);
            $configurationManager->createLocalConfigurationFromFactoryConfiguration();

            // Create a PackageStates.php with all packages activated marked as "part of factory default"
            if (!file_exists(PATH_typo3conf . 'PackageStates.php')) {
                $packageManager = \TYPO3\CMS\Core\Core\Bootstrap::getInstance()->getEarlyInstance(\TYPO3\CMS\Core\Package\PackageManager::class);
                $packages = $packageManager->getAvailablePackages();
                foreach ($packages as $package) {
                    if ($package instanceof \TYPO3\CMS\Core\Package\PackageInterface
                        && $package->isPartOfFactoryDefault()
                    ) {
                        $packageManager->activatePackage($package->getPackageKey());
                    }
                }
                $packageManager->forceSortAndSavePackageStates();
            }

            // Create enable install tool file after typo3conf & LocalConfiguration were created
            $installToolService = $this->objectManager->get(\TYPO3\CMS\Install\Service\EnableFileService::class);
            $installToolService->removeFirstInstallFile();
            $installToolService->createInstallToolEnableFile();
        }

        return $errorsFromStructure;
    }

    public function needsExecution()
    {
        if (@is_file(PATH_typo3conf . 'LocalConfiguration.php')) {
            return false;
        } else {
            return true;
        }
    }

    protected function executeAction()
    {
        $statusCheck = $this->objectManager->get(\TYPO3\CMS\Install\SystemEnvironment\Check::class);
        $statusObjects = $statusCheck->getStatus();
        $statusUtility = $this->objectManager->get(\TYPO3\CMS\Install\Status\StatusUtility::class);
        $environmentStatus = $statusUtility->sortBySeverity($statusObjects);
        $alerts = $statusUtility->filterBySeverity($statusObjects, 'alert');
        $this->view->assign('alerts', $alerts);
        $this->view->assign('environmentStatus', $environmentStatus);

        $folderStructureFactory = $this->objectManager->get(\TYPO3\CMS\Install\FolderStructure\DefaultFactory::class);
        $structureFacade = $folderStructureFactory->getStructure();
        $structureMessages = $structureFacade->getStatus();
        $structureErrors = $statusUtility->filterBySeverity($structureMessages, 'error');
        $this->view->assign('structureErrors', $structureErrors);

        if (!empty($environmentStatus['error']) || !empty($environmentStatus['warning']) || !empty($structureErrors)) {
            $this->view->assign('errorsOrWarningsFromStatus', true);
        }
        $this->assignSteps();

        return $this->view->render(!empty($alerts));
    }
}