public static function changeOrderVolume(Order $order, $newVolume)
{
if ($order->getStatus() != OrderStatus::ACTIVE || $newVolume == $order->getVolume()) {
return false;
}
$deal = new Deal();
$deal->findActiveDealByOrderId($order->getId());
$volumeDifference = $order->getVolume() - $newVolume;
if ($deal->getVolume() < $volumeDifference) {
return false;
}
$rate = new Rate();
$rate->findById($order->getRateId());
$purse = new Purse();
if ($order->getType() == OrderType::BUY) {
$purseSelect = Purse::findBy(array('UID' => $order->getUserId(), 'CurId' => $rate->getSecondCurrencyId()));
$purse->findById($purseSelect[0]['id']);
$difference = $order->getPrice() * $volumeDifference * (1.0 + $rate->getFee());
$purse->addValue($difference);
} else {
$purseSelect = Purse::findBy(array('UID' => $order->getUserId(), 'CurId' => $rate->getFirstCurrencyId()));
$purse->findById($purseSelect[0]['id']);
$purse->addValue($volumeDifference);
}
if ($purse->getValue() < 0) {
return false;
}
$purse->save();
$deal->setDate(date("Y-m-d H:i:s"));
$deal->setVolume($newVolume);
$deal->save();
$order->setVolume($newVolume);
$order->updatePart();
$order->save();
return true;
}