public function TaxRateConstraintValidator::validate in Commerce Product Tax 8

File

src/Plugin/Validation/Constraint/TaxRateConstraintValidator.php, line 18

Class

TaxRateConstraintValidator

Validates the tax rate constraint.

Namespace

Drupal\commerce_product_tax\Plugin\Validation\Constraint

Code

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

  /** @var \Drupal\Core\Field\FieldItemListInterface $value */
  if (!isset($value)) {
    return;
  }
  $field_definition = $value
    ->getFieldDefinition();
  $is_multiple = $field_definition
    ->getFieldStorageDefinition()
    ->isMultiple();
  $allowed_zones = $field_definition
    ->getSetting('allowed_zones');
  $tax_type = TaxType::load($field_definition
    ->getSetting('tax_type'));
  if (empty($tax_type)) {
    return;
  }

  /** @var \Drupal\commerce_tax\Plugin\Commerce\TaxType\LocalTaxTypeInterface $tax_type_plugin */
  $tax_type_plugin = $tax_type
    ->getPlugin();
  $zones = $tax_type_plugin
    ->getZones();
  $seen_zones = [];
  foreach ($value as $delta => $item) {
    list($zone_id, $rate_id) = explode('|', $item->value);

    // Ensure the selected zone is "allowed".
    if (!empty($allowed_zones) && !in_array($zone_id, $allowed_zones)) {
      $value = isset($zones[$zone_id]) ? $zones[$zone_id]
        ->getLabel() : $zone_id;
      $this->context
        ->buildViolation($constraint->invalidZoneMessage)
        ->atPath((string) $delta)
        ->setParameter('%name', $field_definition
        ->getLabel())
        ->setParameter('%value', $value)
        ->addViolation();
      continue;
    }

    // Ensure a single rate is selected per zone, in case of a multiple field.
    if ($is_multiple && in_array($zone_id, $seen_zones)) {
      $this->context
        ->buildViolation($constraint->singleTaxRatePerZoneMessage)
        ->atPath((string) $delta)
        ->addViolation();
      continue;
    }
    $allowed_rates = [
      0 => TaxRateResolverInterface::NO_APPLICABLE_TAX_RATE,
    ];
    foreach ($zones[$zone_id]
      ->getRates() as $rate) {
      $allowed_rates[] = $rate
        ->getId();
    }

    // Ensure the selected rate exists in the zone.
    if (!in_array($rate_id, $allowed_rates)) {
      $this->context
        ->buildViolation($constraint->invalidRateMessage)
        ->atPath((string) $delta)
        ->setParameter('%name', $field_definition
        ->getLabel())
        ->setParameter('%value', $rate_id)
        ->addViolation();
    }
    $seen_zones[] = $zone_id;
  }
}