--- /dev/null
+<?php
+
+namespace Drupal\migrate_drupal_ui\Form;
+
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Render\RendererInterface;
+use Drupal\Core\TempStore\PrivateTempStoreFactory;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Migrate Upgrade database credential form.
+ *
+ * @internal
+ */
+class CredentialForm extends MigrateUpgradeFormBase {
+
+ /**
+ * The renderer service.
+ *
+ * @var \Drupal\Core\Render\RendererInterface
+ */
+ protected $renderer;
+
+ /**
+ * CredentialForm constructor.
+ *
+ * @param \Drupal\Core\Render\RendererInterface $renderer
+ * The renderer service.
+ * @param \Drupal\Core\TempStore\PrivateTempStoreFactory $tempstore_private
+ * The private tempstore factory.
+ */
+ public function __construct(RendererInterface $renderer, PrivateTempStoreFactory $tempstore_private) {
+ parent::__construct($tempstore_private);
+ $this->renderer = $renderer;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function create(ContainerInterface $container) {
+ return new static(
+ $container->get('renderer'),
+ $container->get('tempstore.private')
+ );
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getFormId() {
+ return 'migrate_drupal_ui_credential_form';
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildForm(array $form, FormStateInterface $form_state) {
+ if ($this->store->get('step') != 'credential') {
+ return $this->restartUpgradeForm();
+ }
+
+ $form = parent::buildForm($form, $form_state);
+ $form['actions']['submit']['#value'] = $this->t('Review upgrade');
+
+ $form['#title'] = $this->t('Drupal Upgrade');
+
+ $drivers = $this->getDatabaseTypes();
+ $drivers_keys = array_keys($drivers);
+ // @todo https://www.drupal.org/node/2678510 Because this is a multi-step
+ // form, the form is not rebuilt during submission. Ideally we would get
+ // the chosen driver from form input, if available, in order to use
+ // #limit_validation_errors in the same way
+ // \Drupal\Core\Installer\Form\SiteSettingsForm does.
+ $default_driver = current($drivers_keys);
+
+ $default_options = [];
+
+ $form['version'] = [
+ '#type' => 'radios',
+ '#default_value' => 7,
+ '#title' => $this->t('Drupal version of the source site'),
+ '#options' => ['6' => $this->t('Drupal 6'), '7' => $this->t('Drupal 7')],
+ '#required' => TRUE,
+ ];
+
+ $form['database'] = [
+ '#type' => 'details',
+ '#title' => $this->t('Source database'),
+ '#description' => $this->t('Provide credentials for the database of the Drupal site you want to upgrade.'),
+ '#open' => TRUE,
+ ];
+
+ $form['database']['driver'] = [
+ '#type' => 'radios',
+ '#title' => $this->t('Database type'),
+ '#required' => TRUE,
+ '#default_value' => $default_driver,
+ ];
+ if (count($drivers) == 1) {
+ $form['database']['driver']['#disabled'] = TRUE;
+ }
+
+ // Add driver-specific configuration options.
+ foreach ($drivers as $key => $driver) {
+ $form['database']['driver']['#options'][$key] = $driver->name();
+
+ $form['database']['settings'][$key] = $driver->getFormOptions($default_options);
+ // @todo https://www.drupal.org/node/2678510 Using
+ // #limit_validation_errors in the submit does not work so it is not
+ // possible to require the database and username for mysql and pgsql.
+ // This is because this is a multi-step form.
+ $form['database']['settings'][$key]['database']['#required'] = FALSE;
+ $form['database']['settings'][$key]['username']['#required'] = FALSE;
+ $form['database']['settings'][$key]['#prefix'] = '<h2 class="js-hide">' . $this->t('@driver_name settings', ['@driver_name' => $driver->name()]) . '</h2>';
+ $form['database']['settings'][$key]['#type'] = 'container';
+ $form['database']['settings'][$key]['#tree'] = TRUE;
+ $form['database']['settings'][$key]['advanced_options']['#parents'] = [$key];
+ $form['database']['settings'][$key]['#states'] = [
+ 'visible' => [
+ ':input[name=driver]' => ['value' => $key],
+ ],
+ ];
+
+ // Move the host fields out of advanced settings.
+ if (isset($form['database']['settings'][$key]['advanced_options']['host'])) {
+ $form['database']['settings'][$key]['host'] = $form['database']['settings'][$key]['advanced_options']['host'];
+ $form['database']['settings'][$key]['host']['#title'] = 'Database host';
+ $form['database']['settings'][$key]['host']['#weight'] = -1;
+ unset($form['database']['settings'][$key]['database']['#default_value']);
+ unset($form['database']['settings'][$key]['advanced_options']['host']);
+ }
+ }
+
+ $form['source'] = [
+ '#type' => 'details',
+ '#title' => $this->t('Source files'),
+ '#open' => TRUE,
+ ];
+ $form['source']['d6_source_base_path'] = [
+ '#type' => 'textfield',
+ '#title' => $this->t('Files directory'),
+ '#description' => $this->t('To import files from your current Drupal site, enter a local file directory containing your site (e.g. /var/www/docroot), or your site address (for example http://example.com).'),
+ '#states' => [
+ 'visible' => [
+ ':input[name="version"]' => ['value' => '6'],
+ ],
+ ],
+ ];
+
+ $form['source']['source_base_path'] = [
+ '#type' => 'textfield',
+ '#title' => $this->t('Public files directory'),
+ '#description' => $this->t('To import public files from your current Drupal site, enter a local file directory containing your site (e.g. /var/www/docroot), or your site address (for example http://example.com).'),
+ '#states' => [
+ 'visible' => [
+ ':input[name="version"]' => ['value' => '7'],
+ ],
+ ],
+ ];
+
+ $form['source']['source_private_file_path'] = [
+ '#type' => 'textfield',
+ '#title' => $this->t('Private file directory'),
+ '#default_value' => '',
+ '#description' => $this->t('To import private files from your current Drupal site, enter a local file directory containing your site (e.g. /var/www/docroot).'),
+ '#states' => [
+ 'visible' => [
+ ':input[name="version"]' => ['value' => '7'],
+ ],
+ ],
+ ];
+
+ return $form;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function validateForm(array &$form, FormStateInterface $form_state) {
+
+ // Retrieve the database driver from the form, use reflection to get the
+ // namespace, and then construct a valid database array the same as in
+ // settings.php.
+ $driver = $form_state->getValue('driver');
+ $drivers = $this->getDatabaseTypes();
+ $reflection = new \ReflectionClass($drivers[$driver]);
+ $install_namespace = $reflection->getNamespaceName();
+
+ $database = $form_state->getValue($driver);
+ // Cut the trailing \Install from namespace.
+ $database['namespace'] = substr($install_namespace, 0, strrpos($install_namespace, '\\'));
+ $database['driver'] = $driver;
+
+ // Validate the driver settings and just end here if we have any issues.
+ if ($errors = $drivers[$driver]->validateDatabaseSettings($database)) {
+ foreach ($errors as $name => $message) {
+ $form_state->setErrorByName($name, $message);
+ }
+ return;
+ }
+
+ try {
+ $connection = $this->getConnection($database);
+ $version = (string) $this->getLegacyDrupalVersion($connection);
+ if (!$version) {
+ $form_state->setErrorByName($database['driver'] . '][0', $this->t('Source database does not contain a recognizable Drupal version.'));
+ }
+ elseif ($version !== (string) $form_state->getValue('version')) {
+ $form_state->setErrorByName($database['driver'] . '][0', $this->t('Source database is Drupal version @version but version @selected was selected.', [
+ '@version' => $version,
+ '@selected' => $form_state->getValue('version'),
+ ]));
+ }
+ else {
+ // Setup migrations and save form data to private store.
+ $this->setupMigrations($database, $form_state);
+ }
+ }
+ catch (\Exception $e) {
+ $error_message = [
+ '#title' => $this->t('Resolve the issue below to continue the upgrade.'),
+ '#theme' => 'item_list',
+ '#items' => [$e->getMessage()],
+ ];
+ $form_state->setErrorByName($database['driver'] . '][0', $this->renderer->renderPlain($error_message));
+ }
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function submitForm(array &$form, FormStateInterface $form_state) {
+ $this->store->set('step', 'idconflict');
+ $form_state->setRedirect('migrate_drupal_ui.upgrade_idconflict');
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getConfirmText() {
+ return $this->t('Review upgrade');
+ }
+
+ /**
+ * Returns all supported database driver installer objects.
+ *
+ * @return \Drupal\Core\Database\Install\Tasks[]
+ * An array of available database driver installer objects.
+ */
+ protected function getDatabaseTypes() {
+ // Make sure the install API is available.
+ include_once DRUPAL_ROOT . '/core/includes/install.inc';
+ return drupal_get_database_types();
+ }
+
+}