class EditorTestHooks

class EditorTestHooks {
    
    /**
     * Implements hook_entity_update().
     *
     * @see \Drupal\Tests\editor\Kernel\EntityUpdateTest
     */
    public function entityUpdate(EntityInterface $entity) {
        // Only act on nodes.
        if (!$entity instanceof NodeInterface) {
            return;
        }
        // Avoid infinite loop by only going through our post save logic once.
        if (!empty($entity->editor_test_updating)) {
            return;
        }
        // Set flag for whether or not the entity needs to be resaved.
        $needs_update = FALSE;
        // Perform our post save logic.
        if ($entity->title->value == 'test updated') {
            // Change the node title.
            $entity->title->value = 'test updated 2';
            $needs_update = TRUE;
        }
        if ($needs_update) {
            // Set flag on entity that our logic was already executed.
            $entity->editor_test_updating = TRUE;
            // And resave entity.
            $entity->save();
        }
    }
    
    /**
     * Implements hook_editor_js_settings_alter().
     */
    public function editorJsSettingsAlter(&$settings) {
        // Allow tests to enable or disable this alter hook.
        if (!\Drupal::state()->get('editor_test_js_settings_alter_enabled', FALSE)) {
            return;
        }
        if (isset($settings['editor']['formats']['full_html'])) {
            $settings['editor']['formats']['full_html']['editorSettings']['ponyModeEnabled'] = FALSE;
        }
    }
    
    /**
     * Implements hook_editor_xss_filter_alter().
     */
    public function editorXssFilterAlter(&$editor_xss_filter_class, FilterFormatInterface $format, ?FilterFormatInterface $original_format = NULL) {
        // Allow tests to enable or disable this alter hook.
        if (!\Drupal::state()->get('editor_test_editor_xss_filter_alter_enabled', FALSE)) {
            return;
        }
        $filters = $format->filters()
            ->getAll();
        if (isset($filters['filter_html']) && $filters['filter_html']->status) {
            $editor_xss_filter_class = '\\Drupal\\editor_test\\EditorXssFilter\\Insecure';
        }
    }
    
    /**
     * Implements hook_editor_info_alter().
     */
    public function editorInfoAlter(&$items) {
        if (!\Drupal::state()->get('editor_test_give_me_a_trex_thanks', FALSE)) {
            unset($items['trex']);
        }
    }
    
    /**
     * Implements hook_ENTITY_TYPE_presave() for file entities.
     */
    public function filePresave(FileInterface $file) {
        // Use state to keep track of how many times a file is saved.
        $file_save_count = \Drupal::state()->get('editor_test.file_save_count', []);
        $file_save_count[$file->getFilename()] = isset($file_save_count[$file->getFilename()]) ? $file_save_count[$file->getFilename()] + 1 : 1;
        \Drupal::state()->set('editor_test.file_save_count', $file_save_count);
    }

}