bat-8.x-1.x-dev/modules/bat_fullcalendar/src/Form/FullcalendarEventManagerForm.php

<?php

namespace Drupal\bat_fullcalendar\Form;

use Drupal\bat_event\Util\EventManager;
use Drupal\Core\Entity\EntityFieldManagerInterface;
use Drupal\Core\Entity\EntityTypeManagerInterface;
use Drupal\Core\Form\FormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Field\FieldItemList;
use Drupal\Core\Entity\Plugin\DataType\EntityAdapter;
use Drupal\Core\Render\RendererInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Description message.
 */
class FullcalendarEventManagerForm extends FormBase {

  /**
   * The entity manager.
   *
   * @var \Drupal\Core\Entity\EntityTypeManagerInterface
   */
  protected $entityTypeManager;

  /**
   * The entity field manager service.
   *
   * @var \Drupal\Core\Entity\EntityFieldManagerInterface
   */
  protected $entityFieldManager;

  /**
   * The renderer.
   *
   * @var \Drupal\Core\Render\RendererInterface
   */
  protected $renderer;

  /**
   * The BAT Event Manager.
   *
   * @var \Drupal\bat_event\Util\EventManager
   */
  protected $batEventManager;

  /**
   * Constructs a new FullcalendarEventManagerForm.
   *
   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_manager
   *   The entity manager.
   * @param \Drupal\Core\Entity\EntityFieldManagerInterface $entity_field_manager
   *   The entity field manager.
   * @param \Drupal\Core\Render\RendererInterface $renderer
   *   The renderer.
   * @param \Drupal\bat_event\Util\EventManager $bat_event_manager
   *   The bat event manager.
   */
  public function __construct(EntityTypeManagerInterface $entity_manager, EntityFieldManagerInterface $entity_field_manager, RendererInterface $renderer, EventManager $bat_event_manager) {
    $this->entityTypeManager = $entity_manager;
    $this->entityFieldManager = $entity_field_manager;
    $this->renderer = $renderer;
    $this->batEventManager = $bat_event_manager;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static(
      $container->get('entity_type.manager'),
      $container->get('entity_field.manager'),
      $container->get('renderer'),
      $container->get('bat_event.util.event_manager'),
    );
  }

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return 'bat_fullcalendar_event_manager_form';
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state, $entity_id = 0, $event_type = 0, $event_id = 0, $start_date = 0, $end_date = 0) {
    if (!isset($form_state->getUserInput()['form_id'])) {
      $form_state->getUserInput()['form_id'] = '';
    }

    $form['#attributes']['class'][] = 'bat-management-form bat-event-form';

    // This form element will be replaced whenever 'changethis' is updated.
    $form['#prefix'] = '<div id="replace_textfield_div">';
    $form['#suffix'] = '</div>';

    $form['entity_id'] = [
      '#type' => 'hidden',
      '#value' => $entity_id,
    ];

    $form['event_type'] = [
      '#type' => 'hidden',
      '#value' => $event_type->id(),
    ];

    $form['event_id'] = [
      '#type' => 'hidden',
      '#value' => $event_id,
    ];

    $form['bat_start_date'] = [
      '#type' => 'hidden',
      '#value' => $start_date->format('Y-m-d H:i:s'),
    ];

    $form['bat_end_date'] = [
      '#type' => 'hidden',
      '#value' => $end_date->format('Y-m-d H:i:s'),
    ];

    $unit = $this->entityTypeManager->getStorage($event_type->getTargetEntityType())->load($entity_id);

    $form['event_title'] = [
      '#prefix' => '<h2>',
      '#markup' => $this->t('@unit_name', ['@unit_name' => $unit->label()]),
      '#suffix' => '</h2>',
    ];

    $date_format = $this->configFactory()->get('bat.settings')->get('date_format') ?: 'Y-m-d H:i';
    $form['event_details'] = [
      '#prefix' => '<div class="event-details">',
      '#markup' => $this->t('From @startdate <br/>To @enddate', [
        '@startdate' => $start_date->format($date_format),
        '@enddate' => $end_date->format($date_format),
      ]),
      '#suffix' => '</div>',
    ];

    if ($event_type->getFixedEventStates()) {
      $state_options = bat_unit_state_options($event_type->id());

      $form['change_event_status'] = [
        '#title' => $this->t('Change the state for this event to'),
        '#type' => 'select',
        '#options' => $state_options,
        '#ajax' => [
          'callback' => '::ajaxEventStatusChange',
          'wrapper' => 'replace_textfield_div',
        ],
        '#empty_option' => $this->t('- Select -'),
      ];
    }
    else {
      if (isset($event_type->default_event_value_field_ids) && !empty($event_type->default_event_value_field_ids)) {
        $field_name = $event_type->default_event_value_field_ids;

        $form['field_name'] = [
          '#type' => 'hidden',
          '#value' => $field_name,
        ];

        $field_definition = $this->entityFieldManager->getFieldDefinitions('bat_event', $event_type->id())[$field_name];
        $items = new FieldItemList($field_definition, NULL, EntityAdapter::createFromEntity(bat_event_create(['type' => $event_type->id()])));

        $widget = bat_get_entity_display(
          $entity->getEntityTypeId(),
          $entity->bundle(), 'form'
        )->getRenderer('event_dates')['type'];

        $form['#parents'] = [];

        $form[$field_name] = $widget->form($items, $form, $form_state);
        $form[$field_name]['#weight'] = 1;

        $form['submit'] = [
          '#type' => 'submit',
          '#value' => $this->t('Update value'),
          '#weight' => 2,
          '#ajax' => [
            'callback' => '::eventManagerAjaxSubmit',
            'wrapper' => 'replace_textfield_div',
          ],
        ];
      }
    }

    return $form;
  }

  /**
   * The callback for the change_event_status widget of the event manager form.
   *
   * Update apr24.
   * Code below comes form the BAT < Drupal 8
   * Is to be rewritten as:
   * A. $this->batEventManager->createEvent($values);
   * B. update state
   * C. save
   * Can't get this method in action. Postponed.
   */
  public function ajaxEventStatusChange($form, FormStateInterface $form_state) {
    $values = $form_state->getValues();

    $start_date = new \DateTime($values['bat_start_date']);
    $end_date = new \DateTime($values['bat_end_date']);
    $entity_id = $values['entity_id'];
    $event_type = $values['event_type'];
    $state_id = $values['change_event_status'];

    $event = bat_event_create(['type' => $event_type]);
    $event->uid = $this->currentUser()->id();

    $event_dates = [
      'value' => $start_date->format('Y-m-d\TH:i:00'),
      'end_value' => $end_date->format('Y-m-d\TH:i:00'),
    ];
    $event->set('event_dates', $event_dates);

    $event_type_entity = bat_event_type_load($event_type);
    // Construct target entity reference field name using
    // this event type's target entity type.
    $target_field_name = 'event_' . $event_type_entity->getTargetEntityType() . '_reference';
    $event->set($target_field_name, $entity_id);

    $event->set('event_state_reference', $state_id);

    $event->save();

    $state_options = bat_unit_state_options($event_type);

    $form['form_wrapper_bottom'] = [
      '#prefix' => '<div>',
      '#markup' => $this->t('New Event state is <strong>@state</strong>.', ['@state' => $state_options[$state_id]]),
      '#suffix' => '</div>',
      '#weight' => 9,
    ];

    return $form;
  }

  /**
   * The callback for the change_event_status widget of the event manager form.
   */
  public function eventManagerAjaxSubmit($form, FormStateInterface $form_state) {

    $values = $form_state->getValues();

    $data = $this->batEventManager->createEvent($values);
    $unit = $data['unit'];
    $value = $data['value'];

    $form['form_wrapper_bottom'] = [
      '#prefix' => '<div>',
      '#markup' => $this->t('Value for <b>@name</b> changed to <b>@value</b>', [
        '@name' => $unit->label(),
        '@value' => trim(strip_tags($value->__toString())),
      ]),
      '#suffix' => '</div>',
      '#weight' => 9,
    ];

    return $form;
  }

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

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

}