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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\SalesRule\Model\Quote;
use Magento\Framework\App\ObjectManager;
use Magento\Framework\Event\ManagerInterface;
use Magento\Framework\Pricing\PriceCurrencyInterface;
use Magento\Quote\Api\Data\AddressInterface;
use Magento\Quote\Api\Data\ShippingAssignmentInterface;
use Magento\Quote\Model\Quote;
use Magento\Quote\Model\Quote\Address;
use Magento\Quote\Model\Quote\Address\Total;
use Magento\Quote\Model\Quote\Address\Total\AbstractTotal;
use Magento\Quote\Model\Quote\Item;
use Magento\Quote\Model\Quote\Item\AbstractItem;
use Magento\SalesRule\Api\Data\DiscountDataInterface;
use Magento\SalesRule\Api\Data\DiscountDataInterfaceFactory;
use Magento\SalesRule\Api\Data\RuleDiscountInterfaceFactory;
use Magento\SalesRule\Model\Data\RuleDiscount;
use Magento\SalesRule\Model\Discount\PostProcessorFactory;
use Magento\SalesRule\Model\Rule;
use Magento\SalesRule\Model\Validator;
use Magento\Store\Model\StoreManagerInterface;
use Magento\SalesRule\Model\RulesApplier;
/**
* Discount totals calculation model.
*
* @SuppressWarnings(PHPMD.CouplingBetweenObjects)
*/
class Discount extends AbstractTotal
{
public const COLLECTOR_TYPE_CODE = 'discount';
/**
* Discount calculation object
*
* @var Validator
*/
protected $calculator;
/**
* Core event manager proxy
*
* @var ManagerInterface
*/
protected $eventManager = null;
/**
* @var StoreManagerInterface
*/
protected $storeManager;
/**
* @var PriceCurrencyInterface
*/
protected $priceCurrency;
/**
* @var RuleDiscountInterfaceFactory
*/
private $discountInterfaceFactory;
/**
* @var DiscountDataInterfaceFactory
*/
private $discountDataInterfaceFactory;
/**
* @var RulesApplier|null
*/
private $rulesApplier;
/**
* @var array
*/
private $addressDiscountAggregator = [];
/**
* @param ManagerInterface $eventManager
* @param StoreManagerInterface $storeManager
* @param Validator $validator
* @param PriceCurrencyInterface $priceCurrency
* @param RuleDiscountInterfaceFactory|null $discountInterfaceFactory
* @param DiscountDataInterfaceFactory|null $discountDataInterfaceFactory
* @param RulesApplier|null $rulesApplier
*/
public function __construct(
ManagerInterface $eventManager,
StoreManagerInterface $storeManager,
Validator $validator,
PriceCurrencyInterface $priceCurrency,
RuleDiscountInterfaceFactory $discountInterfaceFactory = null,
DiscountDataInterfaceFactory $discountDataInterfaceFactory = null,
RulesApplier $rulesApplier = null
) {
$this->setCode(self::COLLECTOR_TYPE_CODE);
$this->eventManager = $eventManager;
$this->calculator = $validator;
$this->storeManager = $storeManager;
$this->priceCurrency = $priceCurrency;
$this->discountInterfaceFactory = $discountInterfaceFactory
?: ObjectManager::getInstance()->get(RuleDiscountInterfaceFactory::class);
$this->discountDataInterfaceFactory = $discountDataInterfaceFactory
?: ObjectManager::getInstance()->get(DiscountDataInterfaceFactory::class);
$this->rulesApplier = $rulesApplier
?: ObjectManager::getInstance()->get(RulesApplier::class);
}
/**
* Collect address discount amount
*
* @param Quote $quote
* @param ShippingAssignmentInterface $shippingAssignment
* @param Total $total
* @return $this
* @SuppressWarnings(PHPMD.CyclomaticComplexity)
* @SuppressWarnings(PHPMD.NPathComplexity)
* @SuppressWarnings(PHPMD.ExcessiveMethodLength)
*/
public function collect(
Quote $quote,
ShippingAssignmentInterface $shippingAssignment,
Total $total
) {
parent::collect($quote, $shippingAssignment, $total);
$store = $this->storeManager->getStore($quote->getStoreId());
/** @var Address $address */
$address = $shippingAssignment->getShipping()->getAddress();
if ($quote->currentPaymentWasSet()) {
$address->setPaymentMethod($quote->getPayment()->getMethod());
}
$this->calculator->reset($address);
$itemsAggregate = [];
foreach ($shippingAssignment->getItems() as $item) {
$itemId = $item->getId();
$itemsAggregate[$itemId] = $item;
}
$items = [];
foreach ($quote->getAllAddresses() as $quoteAddress) {
foreach ($quoteAddress->getAllItems() as $item) {
$items[] = $item;
}
}
if (!$items || !$itemsAggregate) {
return $this;
}
$eventArgs = [
'website_id' => $store->getWebsiteId(),
'customer_group_id' => $quote->getCustomerGroupId(),
'coupon_code' => $quote->getCouponCode(),
];
$address->setDiscountDescription([]);
$address->getExtensionAttributes()->setDiscounts([]);
$this->addressDiscountAggregator = [];
$address->setCartFixedRules([]);
$quote->setCartFixedRules([]);
foreach ($items as $item) {
$this->rulesApplier->setAppliedRuleIds($item, []);
if ($item->getExtensionAttributes()) {
$item->getExtensionAttributes()->setDiscounts(null);
}
$item->setDiscountAmount(0);
$item->setBaseDiscountAmount(0);
$item->setDiscountPercent(0);
if ($item->getChildren() && $item->isChildrenCalculated()) {
foreach ($item->getChildren() as $child) {
$child->setDiscountAmount(0);
$child->setBaseDiscountAmount(0);
$child->setDiscountPercent(0);
}
}
}
$this->calculator->init($store->getWebsiteId(), $quote->getCustomerGroupId(), $quote->getCouponCode());
$this->calculator->initTotals($items, $address);
$items = $this->calculator->sortItemsByPriority($items, $address);
$rules = $this->calculator->getRules($address);
/** @var Rule $rule */
foreach ($rules as $rule) {
/** @var Item $item */
foreach ($items as $item) {
if ($quote->getIsMultiShipping() && $item->getAddress()->getId() !== $address->getId()) {
continue;
}
if ($item->getNoDiscount() || !$this->calculator->canApplyDiscount($item) || $item->getParentItem()) {
continue;
}
$eventArgs['item'] = $item;
$this->eventManager->dispatch('sales_quote_address_discount_item', $eventArgs);
$this->calculator->process($item, $rule);
}
$appliedRuleIds = $quote->getAppliedRuleIds() ? explode(',', $quote->getAppliedRuleIds()) : [];
if ($rule->getStopRulesProcessing() && in_array($rule->getId(), $appliedRuleIds)) {
break;
}
$this->calculator->initTotals($items, $address);
}
foreach ($items as $item) {
if (!isset($itemsAggregate[$item->getId()])) {
continue;
}
if ($item->getParentItem()) {
continue;
} elseif ($item->getHasChildren() && $item->isChildrenCalculated()) {
foreach ($item->getChildren() as $child) {
$eventArgs['item'] = $child;
$this->eventManager->dispatch('sales_quote_address_discount_item', $eventArgs);
$this->aggregateItemDiscount($child, $total);
}
}
$this->aggregateItemDiscount($item, $total);
if ($item->getExtensionAttributes()) {
$this->aggregateDiscountPerRule($item, $address);
}
}
$this->calculator->prepareDescription($address);
$total->setDiscountDescription($address->getDiscountDescription());
$total->setSubtotalWithDiscount($total->getSubtotal() + $total->getDiscountAmount());
$total->setBaseSubtotalWithDiscount($total->getBaseSubtotal() + $total->getBaseDiscountAmount());
$address->setDiscountAmount($total->getDiscountAmount());
$address->setBaseDiscountAmount($total->getBaseDiscountAmount());
return $this;
}
/**
* Aggregate item discount information to total data and related properties
*
* @param AbstractItem $item
* @param Total $total
* @return $this
*/
protected function aggregateItemDiscount(
AbstractItem $item,
Total $total
) {
$total->addTotalAmount($this->getCode(), -$item->getDiscountAmount());
$total->addBaseTotalAmount($this->getCode(), -$item->getBaseDiscountAmount());
return $this;
}
/**
* Distribute discount at parent item to children items
*
* @param AbstractItem $item
* @return $this
* @deprecated No longer used.
* @see \Magento\SalesRule\Model\RulesApplier::applyRule()
*/
protected function distributeDiscount(AbstractItem $item)
{
$parentBaseRowTotal = $item->getBaseRowTotal();
$keys = [
'discount_amount',
'base_discount_amount',
'original_discount_amount',
'base_original_discount_amount',
];
$roundingDelta = [];
foreach ($keys as $key) {
//Initialize the rounding delta to a tiny number to avoid floating point precision problem
$roundingDelta[$key] = 0.0000001;
}
foreach ($item->getChildren() as $child) {
$ratio = $parentBaseRowTotal != 0 ? $child->getBaseRowTotal() / $parentBaseRowTotal : 0;
foreach ($keys as $key) {
if (!$item->hasData($key)) {
continue;
}
$value = $item->getData($key) * $ratio;
$roundedValue = $this->priceCurrency->round($value + $roundingDelta[$key]);
$roundingDelta[$key] += $value - $roundedValue;
$child->setData($key, $roundedValue);
}
}
foreach ($keys as $key) {
$item->setData($key, 0);
}
return $this;
}
/**
* Add discount total information to address
*
* @param Quote $quote
* @param Total $total
* @return array|null
* @SuppressWarnings(PHPMD.UnusedFormalParameter)
*/
public function fetch(Quote $quote, Total $total)
{
$result = null;
$amount = $total->getDiscountAmount();
if ($amount != 0) {
$description = $total->getDiscountDescription() ?? '';
$result = [
'code' => $this->getCode(),
'title' => strlen($description) ? __('Discount (%1)', $description) : __('Discount'),
'value' => $amount
];
}
return $result;
}
/**
* Aggregates discount per rule
*
* @param AbstractItem $item
* @param AddressInterface $address
* @return void
*/
private function aggregateDiscountPerRule(
AbstractItem $item,
AddressInterface $address
) {
$discountBreakdown = $item->getExtensionAttributes()->getDiscounts();
if ($discountBreakdown) {
foreach ($discountBreakdown as $value) {
/* @var DiscountDataInterface $discount */
$discount = $value->getDiscountData();
$ruleLabel = $value->getRuleLabel();
$ruleID = $value->getRuleID();
if (isset($this->addressDiscountAggregator[$ruleID])) {
/** @var RuleDiscount $cartDiscount */
$cartDiscount = $this->addressDiscountAggregator[$ruleID];
$discountData = $cartDiscount->getDiscountData();
$discountData->setBaseAmount($discountData->getBaseAmount() + $discount->getBaseAmount());
$discountData->setAmount($discountData->getAmount() + $discount->getAmount());
$discountData->setOriginalAmount(
$discountData->getOriginalAmount() + $discount->getOriginalAmount()
);
$discountData->setBaseOriginalAmount(
$discountData->getBaseOriginalAmount() + $discount->getBaseOriginalAmount()
);
} else {
$data = [
'amount' => $discount->getAmount(),
'base_amount' => $discount->getBaseAmount(),
'original_amount' => $discount->getOriginalAmount(),
'base_original_amount' => $discount->getBaseOriginalAmount()
];
$discountData = $this->discountDataInterfaceFactory->create(['data' => $data]);
$data = [
'discount' => $discountData,
'rule' => $ruleLabel,
'rule_id' => $ruleID,
];
/** @var RuleDiscount $cartDiscount */
$cartDiscount = $this->discountInterfaceFactory->create(['data' => $data]);
$this->addressDiscountAggregator[$ruleID] = $cartDiscount;
}
}
}
$address->getExtensionAttributes()->setDiscounts(array_values($this->addressDiscountAggregator));
}
}