PartKeepr\PartBundle\Entity\Part::recomputeStockLevels PHP Method

    public function recomputeStockLevels()
    {
        $currentStock = 0;
        $avgPrice = 0;
        $totalPartStockPrice = 0;
        $lastPosEntryQuant = 0;
        $lastPosEntryPrice = 0;
        $negativeStock = 0;
        foreach ($this->getStockLevels() as $stockLevel) {
            $currentStock += $stockLevel->getStockLevel();
            if ($currentStock <= 0) {
                $avgPrice = 0;
                $totalPartStockPrice = 0;
                $negativeStock = $currentStock;
            } else {
                if ($stockLevel->getStockLevel() > 0) {
                    $lastPosEntryQuant = $stockLevel->getStockLevel();
                    $lastPosEntryPrice = $stockLevel->getPrice();
                    $totalPartStockPrice += $lastPosEntryPrice * ($lastPosEntryQuant + $negativeStock);
                    $avgPrice = $totalPartStockPrice / $currentStock;
                } else {
                    if ($currentStock < $lastPosEntryQuant) {
                        $totalPartStockPrice = $currentStock * $lastPosEntryPrice;
                        $avgPrice = $totalPartStockPrice / $currentStock;
                    } else {
                        $totalPartStockPrice += $stockLevel->getStockLevel() * $avgPrice;
                        $avgPrice = $totalPartStockPrice / $currentStock;
                    }
                    $negativeStock = 0;
                }
            }
        }
        $this->setStockLevel($currentStock);
        $this->setAveragePrice($avgPrice);
        if ($currentStock < $this->getMinStockLevel()) {
            $this->setLowStock(true);
        } else {
            $this->setLowStock(false);
        }
    }

 /**
  * Updates the stock level for a specific part
  *
  * @param Part             $part      The part to update
  * @param OnFlushEventArgs $eventArgs The event arguments
  */
 protected function updateStockLevel(Part $part, OnFlushEventArgs $eventArgs)
 {
     $entityManager = $eventArgs->getEntityManager();
     $part->recomputeStockLevels();
     $entityManager->getUnitOfWork()->recomputeSingleEntityChangeSet($entityManager->getClassMetadata(get_class($part)), $part);
 }