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<?php
namespace Drupal\config\Form;
use Drupal\Core\Archiver\ArchiveTar;
use Drupal\Core\Config\StorageInterface;
use Drupal\Core\File\FileSystemInterface;
use Drupal\Core\Form\FormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Site\Settings;
use Symfony\Component\DependencyInjection\ContainerInterface;
class ConfigImportForm extends FormBase {
protected $configStorage;
protected $fileSystem;
protected $settings;
public function __construct(StorageInterface $config_storage, FileSystemInterface $file_system, Settings $settings) {
$this->configStorage = $config_storage;
$this->fileSystem = $file_system;
$this->settings = $settings;
}
public static function create(ContainerInterface $container) {
return new static($container
->get('config.storage.sync'), $container
->get('file_system'), $container
->get('settings'));
}
public function getFormId() {
return 'config_import_form';
}
public function buildForm(array $form, FormStateInterface $form_state) {
$directory = $this->settings
->get('config_sync_directory');
$directory_is_writable = is_writable($directory);
if (!$directory_is_writable) {
$this
->messenger()
->addError($this
->t('The directory %directory is not writable.', [
'%directory' => $directory,
]));
}
$form['import_tarball'] = [
'#type' => 'file',
'#title' => $this
->t('Configuration archive'),
'#description' => $this
->t('Allowed types: @extensions.', [
'@extensions' => 'tar.gz tgz tar.bz2',
]),
];
$form['submit'] = [
'#type' => 'submit',
'#value' => $this
->t('Upload'),
'#disabled' => !$directory_is_writable,
];
return $form;
}
public function validateForm(array &$form, FormStateInterface $form_state) {
$all_files = $this
->getRequest()->files
->get('files', []);
if (!empty($all_files['import_tarball'])) {
$file_upload = $all_files['import_tarball'];
if ($file_upload
->isValid()) {
$form_state
->setValue('import_tarball', $file_upload
->getRealPath());
return;
}
}
$form_state
->setErrorByName('import_tarball', $this
->t('The file could not be uploaded.'));
}
public function submitForm(array &$form, FormStateInterface $form_state) {
if ($path = $form_state
->getValue('import_tarball')) {
$this->configStorage
->deleteAll();
try {
$archiver = new ArchiveTar($path, 'gz');
$files = [];
foreach ($archiver
->listContent() as $file) {
$files[] = $file['filename'];
}
$archiver
->extractList($files, $this->settings
->get('config_sync_directory'), '', FALSE, FALSE);
$this
->messenger()
->addStatus($this
->t('Your configuration files were successfully uploaded and are ready for import.'));
$form_state
->setRedirect('config.sync');
} catch (\Exception $e) {
$this
->messenger()
->addError($this
->t('Could not extract the contents of the tar file. The error message is <em>@message</em>', [
'@message' => $e
->getMessage(),
]));
}
$this->fileSystem
->unlink($path);
}
}
}