Issue #2916730 by jonathan1055, g_miric, wanjee, Rob230: Scheduler fields...

  $scheduler_manager = \Drupal::service('scheduler.manager');

  if (in_array($form_id, $scheduler_manager->getEntityFormIds())) {

    _scheduler_entity_form_alter($form, $form_state, $form_id);

    /** @var \Drupal\Core\Entity\EntityInterface $entity */

    $entity = $form_state->getFormObject()->getEntity();

    _scheduler_entity_form_alter($form, $form_state, $form_id, $entity);

  }

  elseif (in_array($form_id, $scheduler_manager->getEntityTypeFormIds())) {

    _scheduler_entity_type_form_alter($form, $form_state, $form_id);

  }

}

/**

 * Implements hook_form_FORM_ID_alter() for media_library_add_form_upload.

 */

function scheduler_form_media_library_add_form_upload_alter(&$form, FormStateInterface $form_state, $form_id) {

  if (isset($form['media'])) {

    $media = $form_state->get('media');

    // Call the entity form alter function for each of the new media items being

    // uploaded.

    foreach ($media as $key => $entity) {

      _scheduler_entity_form_alter($form['media'][$key]['fields'], $form_state, $form_id, $entity);

    }

  }

}

/**

 * Form alter handling for entity forms - add and edit.

 */

function _scheduler_entity_form_alter(&$form, FormStateInterface $form_state, $form_id) {

function _scheduler_entity_form_alter(&$form, FormStateInterface $form_state, $form_id, $entity) {

  // When a content type, such as a page, has an entity reference field linked

  // to media items the Media Library module allows new media to be uploaded and

  // inserted when adding/editing the page. The media upload form is not an

  // 'entity' form and does not have a getFormDisplay() method. Hence we cannot

  // properly amend the form in this scenario and the best we can do is remove

  // the Scheduler fields for safety. The Scheduler issue discussing this is

  // https://www.drupal.org/project/scheduler/issues/2916730

  // Two core issues have been raised, and if/when these are committed then we

  // can remove this conditional check and allow the function to run fully.

  // @todo Remove this conditional check when the two issues have been resolved.

  // @see https://www.drupal.org/project/drupal/issues/3269103

  // @see https://www.drupal.org/project/drupal/issues/3269471

  if ($form_id == 'media_library_add_form_upload') {

    unset($form['publish_on']);

    unset($form['unpublish_on']);

    return;

  }

  // Get the form display object. If this does not exist because the form is

  // prevented from displaying, such as in Commerce Add Product before any store

  // has been created, we can not (and do not need) to do anything, so exit.

  if (!$display = $form_state->getFormObject()->getFormDisplay($form_state)) {

  $param = ($form_id == 'media_library_add_form_upload') ? $entity : $form_state;

  if (!$display = $form_state->getFormObject()->getFormDisplay($param)) {

    return;

  }

  $config = \Drupal::config('scheduler.settings');

  $scheduler_manager = \Drupal::service('scheduler.manager');

  /** @var \Drupal\Core\Entity\EntityInterface $entity */

  $entity = $form_state->getFormObject()->getEntity();

  $entityTypeId = $entity->getEntityTypeId();

  $publishing_enabled = $scheduler_manager->getThirdPartySetting($entity, 'publish_enable', $config->get('default_publish_enable'));

  $always_expand = $scheduler_manager->getThirdPartySetting($entity, 'expand_fieldset', $config->get('default_expand_fieldset')) === 'always';

  $expand_details = $publishing_required || $unpublishing_required || $has_data || $always_expand;

  // Create the group for the fields.

  $form['scheduler_settings'] = [

  // Create the group for the fields. The array key has to be distinct when more

  // than one $entity appears in the form, for example in Media Library uploads.

  // Keep the first key the same as before, without any suffix, as this is used

  // in drupal.behaviors javascript and could be used by third-party modules.

  static $group_number;

  $group_number += 1;

  $scheduler_field_group = ($group_number == 1) ? 'scheduler_settings' : "scheduler_settings_{$group_number}";

  $form[$scheduler_field_group] = [

    '#type' => 'details',

    '#title' => t('Scheduling options'),

    '#open' => $expand_details,

  ];

  // Attach the fields to group.

  $form['unpublish_on']['#group'] = 'scheduler_settings';

  $form['publish_on']['#group'] = 'scheduler_settings';

  $form['publish_on']['#group'] = $form['unpublish_on']['#group'] = $scheduler_field_group;

  // Show the field group as a vertical tab if this option is enabled.

  $use_vertical_tabs = $scheduler_manager->getThirdPartySetting($entity, 'fields_display_mode', $config->get('default_fields_display_mode')) === 'vertical_tab';

  if ($use_vertical_tabs) {

    $form['scheduler_settings']['#group'] = 'advanced';

    $form[$scheduler_field_group]['#group'] = 'advanced';

    // Attach the javascript for the vertical tabs.

    $form['scheduler_settings']['#attached']['library'][] = 'scheduler/vertical-tabs';

    $form[$scheduler_field_group]['#attached']['library'][] = 'scheduler/vertical-tabs';

  }

  // Define the descriptions depending on whether the time can be skipped.

    // Use javascript to pre-fill the time parts if the dates are required.

    // See js/scheduler_default_time.js for more details.

    if ($publishing_required || $unpublishing_required) {

      $form['scheduler_settings']['#attached']['library'][] = 'scheduler/default-time';

      $form['scheduler_settings']['#attached']['drupalSettings']['schedulerDefaultTime'] = $config->get('default_time');

      $form[$scheduler_field_group]['#attached']['library'][] = 'scheduler/default-time';

      $form[$scheduler_field_group]['#attached']['drupalSettings']['schedulerDefaultTime'] = $config->get('default_time');

    }

  }

  else {

  if ($config->get('hide_seconds')) {

    // If there is a publish_on time, then use jQuery to remove the seconds.

    if (isset($entity->publish_on->value)) {

      $form['scheduler_settings']['#attached']['library'][] = 'scheduler/default-time';

      $form['scheduler_settings']['#attached']['drupalSettings']['schedulerHideSecondsPublishOn'] = date('H:i', $entity->publish_on->value);

      $form[$scheduler_field_group]['#attached']['library'][] = 'scheduler/default-time';

      $form[$scheduler_field_group]['#attached']['drupalSettings']['schedulerHideSecondsPublishOn'] = date('H:i', $entity->publish_on->value);

    }

    // Likewise for the unpublish_on time.

    if (isset($entity->unpublish_on->value)) {

      $form['scheduler_settings']['#attached']['library'][] = 'scheduler/default-time';

      $form['scheduler_settings']['#attached']['drupalSettings']['schedulerHideSecondsUnpublishOn'] = date('H:i', $entity->unpublish_on->value);

      $form[$scheduler_field_group]['#attached']['library'][] = 'scheduler/default-time';

      $form[$scheduler_field_group]['#attached']['drupalSettings']['schedulerHideSecondsUnpublishOn'] = date('H:i', $entity->unpublish_on->value);

    }

  }

  $permission = $scheduler_manager->permissionName($entityTypeId, 'schedule');

  if (!\Drupal::currentUser()->hasPermission($permission)) {

    // Do not show the scheduler fields for users who do not have permission.

    // Setting #access to FALSE for 'scheduler_settings' is enough to hide the

    // Setting #access to FALSE for the group fieldset is enough to hide the

    // fields. Setting FALSE for the individual fields is necessary to keep any

    // existing scheduled dates preserved and remain unchanged on saving.

    $form['scheduler_settings']['#access'] = FALSE;

    $form[$scheduler_field_group]['#access'] = FALSE;

    $form['publish_on']['#access'] = FALSE;

    $form['unpublish_on']['#access'] = FALSE;