/**
* Main function that determines what the result does
* @param \Heystack\Deals\Interfaces\DealHandlerInterface $dealHandler
* @return \SebastianBergmann\Money\Money
*/
public function process(DealHandlerInterface $dealHandler)
{
$discount = $this->getCurrencyService()->getZeroMoney();
$dealIdentifier = $dealHandler->getIdentifier();
// Reset the free count for this deal of all the purchasables. We need to do this because
// a new 'cheaper' product may have been added to the purchasable holder in the meantime
foreach ($this->purchasableHolder->getPurchasables() as $purchasable) {
if ($purchasable instanceof DealPurchasableInterface) {
$purchasable->setFreeQuantity($dealIdentifier, 0);
$purchasable->setDealDiscount($dealIdentifier, $discount);
}
}
$remainingFreeDiscounts = $dealHandler->getConditionsMetCount();
$purchasables = $this->getPurchsablesSortedByUnitPrice();
$purchasable = current($purchasables);
while ($purchasable && $remainingFreeDiscounts > 0) {
// Skip if it isn't a deal purchasable
if (!$purchasable instanceof DealPurchasableInterface) {
$purchasable = next($purchasable);
continue;
}
// Get the smaller number, either the quantity of the current purchasable
// or the remaining free discounts
$freeQuantity = min($purchasable->getQuantity(), $remainingFreeDiscounts);
// Get the current discount
$currentPurchasableDiscount = $purchasable->getDealDiscountWithExclusions([$dealIdentifier->getFull()]);
$purchasableTotal = $purchasable->getTotal();
$purchasableDiscount = $purchasable->getUnitPrice()->multiply($freeQuantity);
// When the deduction exceeds the remaining money just remove the remaining money
if ($currentPurchasableDiscount->add($purchasableDiscount)->greaterThan($purchasableTotal)) {
$purchasableDiscount = $purchasableTotal->subtract($currentPurchasableDiscount);
}
$discount = $discount->add($purchasableDiscount);
$purchasable->setFreeQuantity($dealIdentifier, $freeQuantity);
$purchasable->setDealDiscount($dealHandler->getIdentifier(), $purchasableDiscount);
$remainingFreeDiscounts -= $freeQuantity;
// Advance to the next purchasable
$purchasable = next($purchasables);
}
$this->purchasableHolder->updateTotal();
$this->eventService->dispatch(Events::RESULT_PROCESSED, new ResultEvent($this));
return $this->totalDiscount = $discount;
}
/**
* Applies the free gift to the purchasable holder.
*
* The event dispatcher is disabled here to not cause recursion as the free gift is added to the cart. In normal
* circumstances adding a purchasable to the purschasable holder causes deal conditions to be re-evaluated, and
* results of those conditions applied. Obviously in this situation, adding a free gift to the cart may cause those
* events to fire causing other purchasables to be added as a result - leading to a bad situation
*
* There are two cases where the free gift must be added the purchasable holder
*
* 1) when the purchasable has already been added to the cart, but none are yet free.
* 2) when the purchasable has already been added to the cart but the purchasables free quantity is less than the
* current amount of times this condition has been met.
*
* @param \Heystack\Deals\Events\ConditionEvent $event
* @param string $eventName
* @param \Heystack\Core\EventDispatcher $dispatcher
* @return void
*/
public function onConditionsMet(ConditionEvent $event, $eventName, EventDispatcher $dispatcher)
{
// Should we get the event dispatcher off the event?
$deal = $this->getDealHandler();
$dealIdentifier = $deal->getIdentifier();
$conditionsMetCount = $deal->getConditionsMetCount();
$purchasableHolder = $this->getPurchasableHolder();
// Only do stuff if it is relevant to this deal
if ($dealIdentifier->isMatch($event->getDealHandler()->getIdentifier())) {
$dispatcher->setEnabled(false);
$purchasable = $this->getPurchasable();
if ($purchasable instanceof DealPurchasableInterface) {
$purchasableAlreadyInCart = $this->purchasableHolder->getPurchasable($purchasable->getIdentifier());
if (!$purchasableAlreadyInCart instanceof DealPurchasableInterface) {
$this->purchasableHolder->setPurchasable($purchasable, 0);
}
$purchasable->setFreeQuantity($dealIdentifier, $conditionsMetCount);
}
$dispatcher->setEnabled(true);
$purchasableHolder->updateTotal();
}
}
/**
* @param \SS_HTTPRequest $request
* @param \SS_HTTPResponse $response
* @param \DataModel $model
* @return void
*/
public function postRequest(SS_HTTPRequest $request, SS_HTTPResponse $response, DataModel $model)
{
if ($this->eventDispatcher instanceof EventDispatcher) {
$this->eventDispatcher->dispatch(Events::POST_REQUEST);
}
}