public function MerciMaxLengthConstraintValidator::validate in MERCI (Manage Equipment Reservations, Checkout and Inventory) 8.2

File

src/Plugin/Validation/Constraint/MerciMaxLengthConstraintValidator.php, line 23

Contains \Drupal\merci\Plugin\Validation\Constraint\MerciMaxLengthConstraintValidator.

Class

MerciMaxLengthConstraintValidator

Checks for conflicts when validating a entity with reservable items.

Namespace

Drupal\merci\Plugin\Validation\Constraint

Code

public function validate($value, Constraint $constraint) {

  /* @var \Drupal\Core\Field\FieldItemInterface $value */
  if (!isset($value)) {
    return;
  }
  $id = $value->target_id;

  // '0' or NULL are considered valid empty references.
  if (empty($id)) {
    return;
  }
  $datetime_start = clone $value
    ->getEntity()->{$constraint->date_field}
    ->first()->start_date;
  $datetime_end = $value
    ->getEntity()->{$constraint->date_field}
    ->first()->end_date;
  if ($constraint->grouping_field) {
    $entity = $value->entity->{$constraint->grouping_field}
      ->first()->entity;
  }
  else {
    $entity = $value->entity;
  }
  $interval = $entity->{$constraint->interval_field}
    ->first();
  if ($interval == NULL) {
    return;
  }
  $interval_spec = "P";
  if (in_array($interval->period, array(
    'hour',
    'minute',
    'second',
  ))) {
    $interval_spec .= 'T';
  }
  $interval_spec .= $interval->interval;
  $interval_map = array(
    'second' => 'S',
    'minute' => 'M',
    'hour' => 'H',
    'week' => 'W',
    'day' => 'D',
    'month' => 'M',
    'year' => 'Y',
  );
  $interval_spec .= $interval_map[$interval->period];
  $datetime_start
    ->add(new \DateInterval($interval_spec));
  if ($datetime_start < $datetime_end) {
    $this->context
      ->addViolation($constraint->message, array(
      '@interval' => $interval->interval,
      '@period' => $interval->period,
    ));
  }
}