/**
* Prepare order invoice based on order data and requested items qtys
*
* @param array $data
* @return Mage_Sales_Model_Order_Invoice
*/
public function prepareInvoice($qtys = array())
{
$invoice = $this->_convertor->toInvoice($this->_order);
$totalQty = 0;
foreach ($this->_order->getAllItems() as $orderItem) {
if (!$this->_canInvoiceItem($orderItem, array())) {
continue;
}
$item = $this->_convertor->itemToInvoiceItem($orderItem);
if ($orderItem->isDummy()) {
$qty = $orderItem->getQtyOrdered() ? $orderItem->getQtyOrdered() : 1;
} else {
if (isset($qtys[$orderItem->getId()])) {
$qty = (double) $qtys[$orderItem->getId()];
} elseif (!count($qtys)) {
$qty = $orderItem->getQtyToInvoice();
} else {
continue;
}
}
$totalQty += $qty;
$item->setQty($qty);
$invoice->addItem($item);
}
$invoice->setTotalQty($totalQty);
$invoice->collectTotals();
$this->_order->getInvoiceCollection()->addItem($invoice);
return $invoice;
}
