class ContentEntityChangedTest

class ContentEntityChangedTest extends EntityKernelTestBase {
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    protected static $modules = [
        'language',
        'user',
        'system',
        '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() {
        $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();
        $this->assertTrue($entity->getChangedTime() >= REQUEST_TIME, '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() - REQUEST_TIME, '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() {
        $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() >= REQUEST_TIME, '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() - REQUEST_TIME, '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();
        // The assertion fails unless https://www.drupal.org/node/2513094 is
        // committed.
        $this->assertFalse($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.');
    }
    
    /**
     * 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) {
        $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());
    }

}