/**
* Set coupon code to address if $rule contains validated coupon
*
* @param Address $address
* @param \Magento\SalesRule\Model\Rule $rule
* @param mixed $couponCode
* @return $this
*/
public function maintainAddressCouponCode($address, $rule, $couponCode)
{
/*
Rule is a part of rules collection, which includes only rules with 'No Coupon' type or with validated coupon.
As a result, if rule uses coupon code(s) ('Specific' or 'Auto' Coupon Type), it always contains validated coupon
*/
if ($rule->getCouponType() != \Magento\SalesRule\Model\Rule::COUPON_TYPE_NO_COUPON) {
$address->setCouponCode($couponCode);
}
return $this;
}
