class ContentTranslationTestHooks

class ContentTranslationTestHooks {
    
    /**
     * Implements hook_entity_bundle_info_alter().
     */
    public function entityBundleInfoAlter(&$bundles) {
        // Store the initial status of the "translatable" property for the
        // "entity_test_mul" bundle.
        $translatable = !empty($bundles['entity_test_mul']['entity_test_mul']['translatable']);
        \Drupal::state()->set('content_translation_test.translatable', $translatable);
        // Make it translatable if Content Translation did not. This will make the
        // entity object translatable even if it is disabled in Content Translation
        // settings.
        if (!$translatable) {
            $bundles['entity_test_mul']['entity_test_mul']['translatable'] = TRUE;
        }
    }
    
    /**
     * Implements hook_entity_access().
     */
    public function entityAccess(EntityInterface $entity, $operation, AccountInterface $account) {
        $access = \Drupal::state()->get('content_translation.entity_access.' . $entity->getEntityTypeId());
        if (!empty($access[$operation])) {
            return AccessResult::allowed();
        }
        else {
            return AccessResult::neutral();
        }
    }
    
    /**
     * Implements hook_form_BASE_FORM_ID_alter().
     *
     * Adds a textfield to node forms based on a request parameter.
     */
    public function formNodeFormAlter(&$form, FormStateInterface $form_state, $form_id) : void {
        $langcode = $form_state->getFormObject()
            ->getFormLangcode($form_state);
        if (in_array($langcode, [
            'en',
            'fr',
        ]) && \Drupal::request()->get('test_field_only_en_fr')) {
            $form['test_field_only_en_fr'] = [
                '#type' => 'textfield',
                '#title' => 'Field only available on the english and french form',
            ];
            foreach (array_keys($form['actions']) as $action) {
                if ($action != 'preview' && isset($form['actions'][$action]['#type']) && $form['actions'][$action]['#type'] === 'submit') {
                    $form['actions'][$action]['#submit'][] = 'content_translation_test_form_node_form_submit';
                }
            }
        }
    }
    
    /**
     * Implements hook_entity_translation_delete().
     */
    public function entityTranslationDelete(EntityInterface $translation) {
        \Drupal::state()->set('content_translation_test.translation_deleted', TRUE);
    }

}