learnosity-1.0.x-dev/src/Form/LearnosityNodeTypeForm.php

<?php

namespace Drupal\learnosity\Form;

use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\StringTranslation\StringTranslationTrait;

/**
 * Provides a form to alter the node type form.
 */
class LearnosityNodeTypeForm {

  use StringTranslationTrait;

  /**
   * The allowed field types.
   *
   * Should be restricted to appropriate field lengths. For example, we don't
   * want to allow users to map to textarea or boolean fields.
   *
   * @return array
   *   Array of allowed field types.
   */
  protected function allowedFieldTypes() {
    return [
      'string',
      'integer',
      'uuid',
      'email',
    ];
  }

  /**
   * {@inheritdoc}
   */
  public function formAlter(array &$form, FormStateInterface $form_state) {

    // @todo: Add reasonable defaults. Perhaps during module installation?
    $entityFieldManager = \Drupal::service('entity_field.manager');
    $entity = $form_state->getFormObject()->getEntity();
    $mappingsHandler = \Drupal::service('learnosity.mappings_handler');

    // @todo Add support for other entity types.
    $entity_type = 'node';
    $bundle = $entity->id();

    $fields = [];
    $field_definitions = $entityFieldManager->getFieldDefinitions($entity_type, $bundle);
    foreach ($field_definitions as $field) {
      if (in_array($field->getType(), $this->allowedFieldTypes())) {
        $fields[$field->getName()] = $field->getLabel();
      }
    }
    $form['learnosity'] = [
      '#type' => 'details',
      '#title' => t('Learnosity settings'),
      '#access' => \Drupal::currentUser()->hasPermission('administer site configuration'),
      '#group' => 'additional_settings',
      '#tree' => TRUE,
    ];

    $form['learnosity']['mappings'] = [
      '#type' => 'fieldset',
      '#title' => $this->t('Mappings'),
    ];
    $form['learnosity']['mappings']['activity_id'] = [
      '#type' => 'select',
      '#title' => $this->t('Activity ID'),
      '#options' => $fields,
      '#description' => $this->t("The ID that will be used in Learnosity's Reports API and Data API. Limit 36 characters. UUID recommended."),
      '#default_value' => $mappingsHandler->getMapping($entity_type, $bundle, 'activity_id'),
    ];
    $form['learnosity']['mappings']['name'] = [
      '#type' => 'select',
      '#title' => $this->t('Name'),
      '#options' => $fields,
      '#description' => $this->t("The name that will be displayed in Learnosity's Reports API and Data API"),
      '#default_value' => $mappingsHandler->getMapping($entity_type, $bundle, 'name'),
    ];

    $form['actions']['submit']['#submit'][] = [LearnosityNodeTypeForm::class, 'submitForm'];

  }

  /**
   * {@inheritdoc}
   */
  public static function submitForm(array &$form, FormStateInterface $form_state) {
    $entity = $form_state->getFormObject()->getEntity();
    $mappings = $form_state->getValue(['learnosity', 'mappings']);
    $mappingsHandler = \Drupal::service('learnosity.mappings_handler');
    $mappingsHandler->setMappings('node', $entity->id(), $mappings);
    $mappingsHandler->save();

  }

}