flag_lists-4.0.x-dev/src/Form/FlaggingCollectionRevisionRevertForm.php

<?php

namespace Drupal\flag_lists\Form;

use Drupal\Core\Datetime\DateFormatterInterface;
use Drupal\Core\Entity\EntityStorageInterface;
use Drupal\Core\Form\ConfirmFormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Url;
use Drupal\flag_lists\Entity\FlaggingCollectionInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Provides a form for reverting a Flagging collection revision.
 *
 * @ingroup flag_lists
 */
class FlaggingCollectionRevisionRevertForm extends ConfirmFormBase {


  /**
   * The Flagging collection revision.
   *
   * @var \Drupal\flag_lists\Entity\FlaggingCollectionInterface
   */
  protected $revision;

  /**
   * The Flagging collection storage.
   *
   * @var \Drupal\Core\Entity\EntityStorageInterface
   */
  protected $flaggingCollectionStorage;

  /**
   * The date formatter service.
   *
   * @var \Drupal\Core\Datetime\DateFormatterInterface
   */
  protected $dateFormatter;

  /**
   * Constructs a new FlaggingCollectionRevisionRevertForm.
   *
   * @param \Drupal\Core\Entity\EntityStorageInterface $entity_storage
   *   The Flagging collection storage.
   * @param \Drupal\Core\Datetime\DateFormatterInterface $date_formatter
   *   The date formatter service.
   */
  public function __construct(EntityStorageInterface $entity_storage, DateFormatterInterface $date_formatter) {
    $this->flaggingCollectionStorage = $entity_storage;
    $this->dateFormatter = $date_formatter;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static(
      $container->get('entity_type.manager')->getStorage('flagging_collection'),
      $container->get('date.formatter')
    );
  }

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return 'flagging_collection_revision_revert_confirm';
  }

  /**
   * {@inheritdoc}
   */
  public function getQuestion() {
    return $this->t('Are you sure you want to revert to the revision from %revision-date?', ['%revision-date' => $this->dateFormatter->format($this->revision->getRevisionCreationTime())]);
  }

  /**
   * {@inheritdoc}
   */
  public function getCancelUrl() {
    return new Url('entity.flagging_collection.version_history', ['flagging_collection' => $this->revision->id()]);
  }

  /**
   * {@inheritdoc}
   */
  public function getConfirmText() {
    return $this->t('Revert');
  }

  /**
   * {@inheritdoc}
   */
  public function getDescription() {
    return '';
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state, $flagging_collection_revision = NULL) {
    $this->revision = $this->flaggingCollectionStorage->loadRevision($flagging_collection_revision);
    $form = parent::buildForm($form, $form_state);

    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    // The revision timestamp will be updated when the revision is saved. Keep
    // the original one for the confirmation message.
    $original_revision_timestamp = $this->revision->getRevisionCreationTime();

    $this->revision = $this->prepareRevertedRevision($this->revision, $form_state);
    $this->revision->revision_log = $this->t('Copy of the revision from %date.', ['%date' => $this->dateFormatter->format($original_revision_timestamp)]);
    $this->revision->save();

    $this->logger('content')
      ->notice('Flagging collection: reverted %title revision %revision.', [
        '%title' => $this->revision->label(),
        '%revision' => $this->revision->getRevisionId(),
      ]);
    $this->messenger()
      ->addMessage(
        t('Flagging collection %title has been reverted to the revision from %revision-date.', [
          '%title' => $this->revision->label(),
          '%revision-date' => $this->dateFormatter->format($original_revision_timestamp),
        ])
      );
    $form_state->setRedirect(
      'entity.flagging_collection.version_history',
      ['flagging_collection' => $this->revision->id()]
    );
  }

  /**
   * Prepares a revision to be reverted.
   *
   * @param \Drupal\flag_lists\Entity\FlaggingCollectionInterface $revision
   *   The revision to be reverted.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current state of the form.
   *
   * @return \Drupal\flag_lists\Entity\FlaggingCollectionInterface
   *   The prepared revision ready to be stored.
   */
  protected function prepareRevertedRevision(FlaggingCollectionInterface $revision, FormStateInterface $form_state) {
    $revision->setNewRevision();
    $revision->isDefaultRevision(TRUE);
    $revision->setRevisionCreationTime(\Drupal::time()->getRequestTime());

    return $revision;
  }

}