/**
* Avoid applying a manual coupon if another is being applied
*
* @param CartCouponOnApplyEvent $event
*
* @throws CouponIncompatibleException
*/
public function assertJustOneManualCoupon(CartCouponOnApplyEvent $event)
{
if (!$this->isManual($event->getCoupon())) {
return null;
}
/**
* @var CartCouponInterface[] $cartCoupons
*/
$cartCoupons = $this->cartCouponRepository->findBy(['cart' => $event->getCart()]);
foreach ($cartCoupons as $cartCoupon) {
if ($this->isManual($cartCoupon->getCoupon())) {
throw new CouponIncompatibleException();
}
}
}
/**
* Removes a Coupon from a Cart, and recalculates Cart Totals
*
* @param CartInterface $cart Cart
* @param CouponInterface $coupon The coupon to remove
*
* @return boolean Coupon has been removed from cart
*/
public function removeCoupon(CartInterface $cart, CouponInterface $coupon)
{
$cartCoupons = $this->cartCouponRepository->findBy(array('cart' => $cart, 'coupon' => $coupon));
if (empty($cartCoupons)) {
return false;
}
foreach ($cartCoupons as $cartCoupon) {
$this->cartCouponEventDispatcher->dispatchCartCouponOnRemoveEvent($cartCoupon);
}
return true;
}
/**
* Check if this coupon can be applied when other coupons had previously
* been applied.
*
* @param CartInterface $cart Cart
* @param CouponInterface $coupon Coupon
*
* @throws CouponNotStackableException Coupon is not stackable
*/
public function validateStackableCoupon(CartInterface $cart, CouponInterface $coupon)
{
$cartCoupons = $this->cartCouponRepository->findBy(['cart' => $cart]);
/**
* If there are no previously applied coupons we can skip the check.
*/
if (0 == count($cartCoupons)) {
return;
}
$appliedCouponsCanBeStacked = array_reduce($cartCoupons, function ($previousCouponsAreStackable, CartCouponInterface $cartCoupon) {
return $previousCouponsAreStackable && $cartCoupon->getCoupon()->getStackable();
}, true);
/**
* Checked coupon can be stackable and everything that was
* previously applied is also stackable.
*/
if ($coupon->getStackable() && $appliedCouponsCanBeStacked) {
return;
}
throw new CouponNotStackableException();
}