class ContentEntityChangedTest

class ContentEntityChangedTest extends EntityKernelTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'language',
    'field',
    'text',
    'filter',
    'entity_test',
  ];
  
  /**
   * The EntityTestMulChanged entity type storage.
   *
   * @var \Drupal\Core\Entity\EntityStorageInterface
   */
  protected $mulChangedStorage;
  
  /**
   * The EntityTestMulRevChanged entity type storage.
   *
   * @var \Drupal\Core\Entity\EntityStorageInterface
   */
  protected $mulRevChangedStorage;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    // Enable an additional language.
    ConfigurableLanguage::createFromLangcode('de')->save();
    ConfigurableLanguage::createFromLangcode('fr')->save();
    $this->installEntitySchema('entity_test_mul_changed');
    $this->installEntitySchema('entity_test_mulrev_changed');
    $this->mulChangedStorage = $this->entityTypeManager
      ->getStorage('entity_test_mul_changed');
    $this->mulRevChangedStorage = $this->entityTypeManager
      ->getStorage('entity_test_mulrev_changed');
  }
  
  /**
   * Tests basic EntityChangedInterface functionality.
   */
  public function testChanged() : void {
    $user1 = $this->createUser();
    $user2 = $this->createUser();
    // Create a test entity.
    $entity = EntityTestMulChanged::create([
      'name' => $this->randomString(),
      'not_translatable' => $this->randomString(),
      'user_id' => $user1->id(),
      'language' => 'en',
    ]);
    $entity->save();
    $requestTime = \Drupal::time()->getRequestTime();
    $this->assertGreaterThanOrEqual($requestTime, $entity->getChangedTime(), 'Changed time of original language is valid.');
    // We can't assert equality here because the created time is set to the
    // request time, while instances of ChangedTestItem use the current
    // timestamp every time. Therefore we check if the changed timestamp is
    // between the created time and now.
    $this->assertTrue($entity->getChangedTime() >= $entity->get('created')->value && $entity->getChangedTime() - $entity->get('created')->value <= time() - $requestTime, 'Changed and created time of original language can be assumed to be identical.');
    $this->assertEquals($entity->getChangedTimeAcrossTranslations(), $entity->getChangedTime(), 'Changed time of original language is the same as changed time across all translations.');
    $changed_en = $entity->getChangedTime();
    /** @var \Drupal\entity_test\Entity\EntityTestMulRevChanged $german */
    $german = $entity->addTranslation('de');
    $entity->save();
    $this->assertEquals($changed_en, $entity->getChangedTime(), 'Changed time of original language did not change.');
    $this->assertTrue($german->getChangedTime() > $entity->getChangedTime(), 'Changed time of the German translation is newer then the original language.');
    $this->assertEquals($entity->getChangedTimeAcrossTranslations(), $german->getChangedTime(), 'Changed time of the German translation is the newest time across all translations.');
    $changed_de = $german->getChangedTime();
    $entity->save();
    $this->assertEquals($changed_en, $entity->getChangedTime(), 'Changed time of original language did not change.');
    $this->assertEquals($changed_de, $german->getChangedTime(), 'Changed time of the German translation did not change.');
    // Update a non-translatable field to make sure that the changed timestamp
    // is updated for all translations.
    $entity->set('not_translatable', $this->randomString())
      ->save();
    $this->assertTrue($entity->getChangedTime() > $changed_en, 'Changed time of original language did change.');
    $this->assertTrue($german->getChangedTime() > $changed_de, 'Changed time of the German translation did change.');
    $this->assertEquals($entity->getChangedTime(), $german->getChangedTime(), 'When editing a non-translatable field the updated changed time is equal across all translations.');
    $changed_en = $entity->getChangedTime();
    $changed_de = $german->getChangedTime();
    $entity->setOwner($user2);
    $entity->save();
    $this->assertTrue($entity->getChangedTime() > $changed_en, 'Changed time of original language did change.');
    $this->assertEquals($changed_de, $german->getChangedTime(), 'Changed time of the German translation did not change.');
    $this->assertTrue($entity->getChangedTime() > $german->getChangedTime(), 'Changed time of original language is newer then the German translation.');
    $this->assertEquals($entity->getChangedTimeAcrossTranslations(), $entity->getChangedTime(), 'Changed time of the original language is the newest time across all translations.');
    $changed_en = $entity->getChangedTime();
    // Save entity without any changes.
    $entity->save();
    $this->assertEquals($changed_en, $entity->getChangedTime(), 'Changed time of original language did not change.');
    $this->assertEquals($changed_de, $german->getChangedTime(), 'Changed time of the German translation did not change.');
    // At this point the changed time of the original language (en) is newer
    // than the changed time of the German translation. Now test that entity
    // queries work as expected.
    $query = $this->mulChangedStorage
      ->getQuery()
      ->accessCheck(FALSE);
    $ids = $query->condition('changed', $changed_en)
      ->execute();
    $this->assertEquals($entity->id(), reset($ids), 'Entity query can access changed time of original language.');
    $query = $this->mulChangedStorage
      ->getQuery()
      ->accessCheck(FALSE);
    $ids = $query->condition('changed', $changed_en, '=', 'en')
      ->execute();
    $this->assertEquals($entity->id(), reset($ids), 'Entity query can access changed time of original language by setting the original language as condition.');
    $query = $this->mulChangedStorage
      ->getQuery()
      ->accessCheck(FALSE);
    $ids = $query->condition('changed', $changed_de, '=', 'en')
      ->execute();
    $this->assertEmpty($ids, 'There\'s no original entity stored having the changed time of the German translation.');
    $query = $this->mulChangedStorage
      ->getQuery()
      ->accessCheck(FALSE);
    $ids = $query->condition('changed', $changed_en)
      ->condition('default_langcode', '1')
      ->execute();
    $this->assertEquals($entity->id(), reset($ids), 'Entity query can access changed time of default language.');
    $query = $this->mulChangedStorage
      ->getQuery()
      ->accessCheck(FALSE);
    $ids = $query->condition('changed', $changed_de)
      ->condition('default_langcode', '1')
      ->execute();
    $this->assertEmpty($ids, 'There\'s no entity stored using the default language having the changed time of the German translation.');
    $query = $this->mulChangedStorage
      ->getQuery()
      ->accessCheck(FALSE);
    $ids = $query->condition('changed', $changed_de)
      ->execute();
    $this->assertEquals($entity->id(), reset($ids), 'Entity query can access changed time of the German translation.');
    $query = $this->mulChangedStorage
      ->getQuery()
      ->accessCheck(FALSE);
    $ids = $query->condition('changed', $changed_de, '=', 'de')
      ->execute();
    $this->assertEquals($entity->id(), reset($ids), 'Entity query can access changed time of the German translation.');
    $query = $this->mulChangedStorage
      ->getQuery()
      ->accessCheck(FALSE);
    $ids = $query->condition('changed', $changed_en, '=', 'de')
      ->execute();
    $this->assertEmpty($ids, 'There\'s no German translation stored having the changed time of the original language.');
    $query = $this->mulChangedStorage
      ->getQuery()
      ->accessCheck(FALSE);
    $ids = $query->condition('changed', $changed_de, '>')
      ->execute();
    $this->assertEquals($entity->id(), reset($ids), 'Entity query can access changed time regardless of translation.');
    $query = $this->mulChangedStorage
      ->getQuery()
      ->accessCheck(FALSE);
    $ids = $query->condition('changed', $changed_en, '<')
      ->execute();
    $this->assertEquals($entity->id(), reset($ids), 'Entity query can access changed time regardless of translation.');
    $query = $this->mulChangedStorage
      ->getQuery()
      ->accessCheck(FALSE);
    $ids = $query->condition('changed', 0, '>')
      ->execute();
    $this->assertEquals($entity->id(), reset($ids), 'Entity query can access changed time regardless of translation.');
    $query = $this->mulChangedStorage
      ->getQuery()
      ->accessCheck(FALSE);
    $ids = $query->condition('changed', $changed_en, '>')
      ->execute();
    $this->assertEmpty($ids, 'Entity query can access changed time regardless of translation.');
  }
  
  /**
   * Tests revisionable EntityChangedInterface functionality.
   */
  public function testRevisionChanged() : void {
    $user1 = $this->createUser();
    $user2 = $this->createUser();
    // Create a test entity.
    $entity = EntityTestMulRevChanged::create([
      'name' => $this->randomString(),
      'user_id' => $user1->id(),
      'language' => 'en',
    ]);
    $entity->save();
    $this->assertTrue($entity->getChangedTime() >= \Drupal::time()->getRequestTime(), 'Changed time of original language is valid.');
    // We can't assert equality here because the created time is set to the
    // request time while instances of ChangedTestItem use the current
    // timestamp every time.
    $this->assertTrue($entity->getChangedTime() >= $entity->get('created')->value && $entity->getChangedTime() - $entity->get('created')->value <= time() - \Drupal::time()->getRequestTime(), 'Changed and created time of original language can be assumed to be identical.');
    $this->assertEquals($entity->getChangedTimeAcrossTranslations(), $entity->getChangedTime(), 'Changed time of original language is the same as changed time across all translations.');
    $this->assertTrue($this->getRevisionTranslationAffectedFlag($entity), 'Changed flag of original language is set for a new entity.');
    $changed_en = $entity->getChangedTime();
    $entity->setNewRevision();
    // Save entity without any changes but create new revision.
    $entity->save();
    // A new revision without any changes should not set a new changed time.
    $this->assertEquals($changed_en, $entity->getChangedTime(), 'Changed time of original language did not change.');
    $this->assertFalse($this->getRevisionTranslationAffectedFlag($entity), 'Changed flag of original language is not set for new revision without changes.');
    $entity->setNewRevision();
    $entity->setOwner($user2);
    $entity->save();
    $this->assertTrue($entity->getChangedTime() > $changed_en, 'Changed time of original language has been updated by new revision.');
    $this->assertTrue($this->getRevisionTranslationAffectedFlag($entity), 'Changed flag of original language is set for new revision with changes.');
    $changed_en = $entity->getChangedTime();
    /** @var \Drupal\entity_test\Entity\EntityTestMulRevChanged $german */
    $german = $entity->addTranslation('de');
    $entity->save();
    $this->assertEquals($changed_en, $entity->getChangedTime(), 'Changed time of original language did not change.');
    $this->assertTrue($german->getChangedTime() > $entity->getChangedTime(), 'Changed time of the German translation is newer then the original language.');
    $this->assertEquals($entity->getChangedTimeAcrossTranslations(), $german->getChangedTime(), 'Changed time of the German translation is the newest time across all translations.');
    $this->assertTrue($this->getRevisionTranslationAffectedFlag($entity), 'Changed flag of original language is not reset by adding a new translation.');
    $this->assertTrue($this->getRevisionTranslationAffectedFlag($german), 'Changed flag of German translation is set when adding the translation.');
    $changed_de = $german->getChangedTime();
    $entity->setNewRevision();
    // Save entity without any changes but create new revision.
    $entity->save();
    $this->assertEquals($changed_en, $entity->getChangedTime(), 'Changed time of original language did not change.');
    $this->assertEquals($changed_de, $german->getChangedTime(), 'Changed time of the German translation did not change.');
    $this->assertFalse($this->getRevisionTranslationAffectedFlag($entity), 'Changed flag of original language is not set for new revision without changes.');
    $this->assertFalse($this->getRevisionTranslationAffectedFlag($german), 'Changed flag of the German translation is not set for new revision without changes.');
    $entity->setNewRevision();
    $german->setOwner($user2);
    $entity->save();
    $this->assertEquals($changed_en, $entity->getChangedTime(), 'Changed time of original language did not change.');
    $this->assertTrue($german->getChangedTime() > $changed_de, 'Changed time of the German translation did change.');
    $this->assertEquals($entity->getChangedTimeAcrossTranslations(), $german->getChangedTime(), 'Changed time of the German translation is the newest time across all translations.');
    $this->assertFalse($this->getRevisionTranslationAffectedFlag($entity), 'Changed flag of original language is not set when changing the German Translation.');
    $this->assertTrue($this->getRevisionTranslationAffectedFlag($german), 'Changed flag of German translation is set when changing the German translation.');
    $french = $entity->addTranslation('fr');
    $entity->setNewRevision();
    $entity->save();
    $this->assertEquals($changed_en, $entity->getChangedTime(), 'Changed time of original language did not change.');
    $this->assertTrue($french->getChangedTime() > $entity->getChangedTime(), 'Changed time of the French translation is newer then the original language.');
    $this->assertTrue($french->getChangedTime() > $entity->getChangedTime(), 'Changed time of the French translation is newer then the German translation.');
    $this->assertEquals($entity->getChangedTimeAcrossTranslations(), $french->getChangedTime(), 'Changed time of the French translation is the newest time across all translations.');
    $this->assertFalse($this->getRevisionTranslationAffectedFlag($entity), 'Changed flag of original language is reset by adding a new translation and a new revision.');
    $this->assertFalse($this->getRevisionTranslationAffectedFlag($german), 'Changed flag of German translation is reset by adding a new translation and a new revision.');
    $this->assertTrue($this->getRevisionTranslationAffectedFlag($french), 'Changed flag of French translation is set when adding the translation and a new revision.');
    $entity->removeTranslation('fr');
    $entity->setNewRevision();
    $entity->save();
    // This block simulates exactly the flow of a node form submission of a new
    // translation and a new revision.
    $form_entity_builder_entity = EntityTestMulRevChanged::load($entity->id());
    // ContentTranslationController::prepareTranslation().
    $form_entity_builder_entity = $form_entity_builder_entity->addTranslation('fr', $form_entity_builder_entity->toArray());
    // EntityForm::buildEntity() during form submit.
    $form_entity_builder_clone = clone $form_entity_builder_entity;
    // NodeForm::submitForm().
    $form_entity_builder_clone->setNewRevision();
    // EntityForm::save().
    $form_entity_builder_clone->save();
    $this->assertFalse($this->getRevisionTranslationAffectedFlag($entity), 'Changed flag of original language is reset by adding a new translation and a new revision.');
    $this->assertFalse($this->getRevisionTranslationAffectedFlag($german), 'Changed flag of German translation is reset by adding a new translation and a new revision.');
    $this->assertTrue($this->getRevisionTranslationAffectedFlag($french), 'Changed flag of French translation is set when adding the translation and a new revision.');
    // Since above a clone of the entity was saved and then this entity is saved
    // again, we have to update the revision ID to the current one.
    $german->set('revision_id', $form_entity_builder_clone->getRevisionId());
    $german->updateLoadedRevisionId();
    $german->setOwner($user1);
    $german->setRevisionTranslationAffected(FALSE);
    $entity->save();
    $this->assertFalse($this->getRevisionTranslationAffectedFlag($german), 'German translation changed but the changed flag is reset manually.');
    $entity->setNewRevision();
    $german->setRevisionTranslationAffected(TRUE);
    $entity->save();
    $this->assertTrue($this->getRevisionTranslationAffectedFlag($german), 'German translation is not changed and a new revision is created but the changed flag is set manually.');
    $german->setOwner($user2);
    $entity->setNewRevision();
    $german->setRevisionTranslationAffected(FALSE);
    $entity->save();
    $this->assertFalse($this->getRevisionTranslationAffectedFlag($german), 'German translation changed and a new revision is created but the changed flag is reset manually.');
  }
  
  /**
   * Tests the changed functionality when an entity is syncing.
   */
  public function testChangedSyncing() : void {
    $entity = EntityTestMulChanged::create();
    $entity->save();
    $changed_time_1 = $entity->getChangedTime();
    // Without the syncing flag the changed time will increment when content is
    // changed.
    $entity->setName($this->randomString());
    $entity->save();
    $changed_time_2 = $entity->getChangedTime();
    $this->assertTrue($changed_time_2 > $changed_time_1);
    // With the syncing flag, the changed time will not change.
    $entity->setName($this->randomString());
    $entity->setSyncing(TRUE);
    $entity->save();
    $changed_time_3 = $entity->getChangedTime();
    $this->assertEquals($changed_time_2, $changed_time_3);
  }
  
  /**
   * Retrieves the revision translation affected flag value.
   *
   * @param \Drupal\entity_test\Entity\EntityTestMulRevChanged $entity
   *   The entity object to be checked.
   *
   * @return bool
   *   The flag value.
   */
  protected function getRevisionTranslationAffectedFlag(EntityTestMulRevChanged $entity) : bool {
    $query = $this->mulRevChangedStorage
      ->getQuery()
      ->accessCheck(FALSE);
    $ids = $query->condition('revision_translation_affected', 1, '=', $entity->language()
      ->getId())
      ->execute();
    $id = reset($ids);
    return (bool) ($id == $entity->id());
  }

}