/**
* Prepare credit memo
*
* @param $amount
* @param $baseGrandTotal
* @param false|Invoice $invoice
* @return mixed
*/
protected function prepareCreditMemo($amount, $baseGrandTotal, $invoice)
{
$entity = $invoice ?: $this->getOrder();
if ($entity->getBaseTotalRefunded() > 0) {
$adjustment = ['adjustment_positive' => $amount];
} else {
$adjustment = ['adjustment_negative' => $baseGrandTotal - $amount];
}
if ($invoice) {
$creditMemo = $this->creditmemoFactory->createByInvoice($invoice, $adjustment);
} else {
$creditMemo = $this->creditmemoFactory->createByOrder($this->getOrder(), $adjustment);
}
if ($creditMemo) {
$totalRefunded = $entity->getBaseTotalRefunded() + $creditMemo->getBaseGrandTotal();
$this->setShouldCloseParentTransaction($entity->getBaseGrandTotal() <= $totalRefunded);
}
return $creditMemo;
}
