public function getDiscount()
    {
        $discount = 0.00;

        $coupons = $this->facade->getCurrentCoupons();

        if (\count($coupons) > 0) {
            $couponsKept = $this->sortCoupons($coupons);

            $discount = $this->getEffect($couponsKept);

            // Just In Case test
            $checkoutTotalPrice = $this->facade->getCartTotalTaxPrice();

            if ($discount >= $checkoutTotalPrice) {
                $discount = $checkoutTotalPrice;
            }
        }

        return $discount;
    }