public function XquantityStockAvailabilityChecker::check in Commerce Extended Quantity 8

Checks the availability of the given purchasable entity.

Parameters

\Drupal\commerce_order\Entity\OrderItemInterface $order_item: The order item.

\Drupal\commerce\Context $context: The context.

int $quantity: The quantity.

Return value

bool|null TRUE if the entity is available, FALSE if it's unavailable, or NULL if it has no opinion.

Overrides AvailabilityCheckerInterface::check

File

modules/xquantity_stock/src/XquantityStockAvailabilityChecker.php, line 52

Class

XquantityStockAvailabilityChecker

Namespace

Drupal\xquantity_stock

Code

public function check(OrderItemInterface $order_item, Context $context, $quantity = 0) : AvailabilityResult {
  $entity = $order_item
    ->getPurchasedEntity();
  if (!($entity = $order_item
    ->getPurchasedEntity())) {
    return AvailabilityResult::unavailable('Variation does not exist.');
  }
  $available = $xquantity_stock = $value = NULL;
  if ($context
    ->getData('xquantity')) {
    foreach (array_reverse($entity
      ->getFieldDefinitions()) as $definition) {
      if ($definition
        ->getType() == 'xquantity_stock') {
        $field_name = $definition
          ->getName();
        $xquantity_stock = $entity
          ->get($field_name);
        $value = $xquantity_stock->value;
        break;
      }
    }
    if (!$xquantity_stock) {
      return AvailabilityResult::neutral();
    }
    $scale = Numeric::getDecimalDigits($xquantity_stock
      ->getSetting('step'));
    if ($old = $context
      ->getData('old')) {

      // Return some quantity to the stock.
      if ($available = bccomp($old, $quantity, $scale) !== -1) {
        $diff = bcsub($old, $quantity, $scale);
        $entity
          ->set($field_name, bcadd($value, $diff, $scale))
          ->save();
        $quantity = '0';
      }
      else {
        $quantity = bcsub($quantity, $old, $scale);
      }
    }
    $stock = bcsub($value, $quantity, $scale);
    if (!$available && ($available = bccomp($stock, 0, $scale) !== -1)) {
      $entity
        ->set($field_name, $stock)
        ->save();
    }

    // Allow modules to apply their own logic.
    $context = [
      'entity' => $entity,
      'context' => $context,
      'xquantity_stock' => $xquantity_stock,
    ];
    \Drupal::moduleHandler()
      ->alter("xquantity_availability_check", $available, $quantity, $context);
  }
  return $available ? AvailabilityResult::neutral() : AvailabilityResult::unavailable();
}