/**
* returns an Array of OrderItem IDs
* to which the coupon applies
* @param DiscountCouponOption
* @return Array
*/
protected function applicableProductsArray($coupon)
{
if (self::$_applicable_products_array === null) {
self::$_applicable_products_array = array();
$finalArray = array();
$order = $this->Order();
if ($order) {
$items = $order->Items();
if ($items && $items->count()) {
//get a list of all the products in the cart
$arrayOfProductsInOrder = array();
foreach ($items as $item) {
$buyable = $item->Buyable();
if ($buyable instanceof ProductVaration) {
$buyable = $buyable->Product();
}
$arrayOfProductsInOrder[$item->ID] = $buyable->ID;
}
//if no products / product groups are specified then
//it applies
//get a list of all the products to which the coupon applies
$productsArray = $coupon->Products()->map("ID", "ID")->toArray();
if (count($productsArray)) {
$matches = array_intersect($productsArray, $arrayOfProductsInOrder);
foreach ($matches as $buyableID) {
foreach ($arrayOfProductsInOrder as $itemID => $innerBuyableID) {
if ($buyableID == $innerBuyableID) {
$finalArray[$itemID] = $itemID;
}
}
}
} else {
foreach ($arrayOfProductsInOrder as $itemID => $buyableID) {
$finalArray[$itemID] = $itemID;
}
}
}
}
self::$_applicable_products_array = $finalArray;
}
return self::$_applicable_products_array;
}
