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<?php declare(strict_types=1); |
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namespace Shopware\Core\Checkout\Cart; |
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use Psr\Log\LoggerInterface; |
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use Shopware\Core\Checkout\Cart\Exception\CartTokenNotFoundException; |
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use Shopware\Core\Content\Rule\RuleCollection; |
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use Shopware\Core\Framework\Context; |
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use Shopware\Core\System\SalesChannel\SalesChannelContext; |
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use Symfony\Component\Cache\Adapter\TagAwareAdapterInterface; |
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class CartRuleLoader |
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{ |
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public const CHECKOUT_RULE_LOADER_CACHE_KEY = 'all-rules'; |
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private const MAX_ITERATION = 5; |
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/** |
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* @var CartPersisterInterface |
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*/ |
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private $cartPersister; |
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/** |
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* @var null|RuleCollection |
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*/ |
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private $rules; |
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/** |
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* @var Processor |
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*/ |
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private $processor; |
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/** |
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* @var LoggerInterface |
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*/ |
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private $logger; |
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/** |
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* @var TagAwareAdapterInterface |
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*/ |
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private $cache; |
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/** |
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* @var RuleLoader |
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*/ |
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private $ruleLoader; |
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public function __construct( |
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CartPersisterInterface $cartPersister, |
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Processor $processor, |
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LoggerInterface $logger, |
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TagAwareAdapterInterface $cache, |
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RuleLoader $loader |
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) { |
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$this->cartPersister = $cartPersister; |
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$this->processor = $processor; |
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$this->logger = $logger; |
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$this->cache = $cache; |
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$this->ruleLoader = $loader; |
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} |
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public function loadByToken(SalesChannelContext $context, string $cartToken): RuleLoaderResult |
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{ |
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try { |
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$cart = $this->cartPersister->load($cartToken, $context); |
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} catch (CartTokenNotFoundException $e) { |
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$cart = new Cart($context->getSalesChannel()->getTypeId(), $cartToken); |
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} |
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return $this->loadByCart($context, $cart, new CartBehavior($context->getPermissions())); |
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} |
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public function loadByCart(SalesChannelContext $context, Cart $cart, CartBehavior $behaviorContext): RuleLoaderResult |
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{ |
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return $this->load($context, $cart, $behaviorContext); |
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} |
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public function reset(): void |
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{ |
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$this->rules = null; |
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$this->cache->deleteItem(self::CHECKOUT_RULE_LOADER_CACHE_KEY); |
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} |
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private function load(SalesChannelContext $context, Cart $cart, CartBehavior $behaviorContext): RuleLoaderResult |
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{ |
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$rules = $this->loadRules($context->getContext()); |
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$context->setRuleIds($rules->getIds()); |
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$iteration = 1; |
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$cart = $this->processor->process($cart, $context, $behaviorContext); |
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do { |
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if ($iteration > self::MAX_ITERATION) { |
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break; |
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} |
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//find rules which matching current cart and context state |
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$rules = $rules->filterMatchingRules($cart, $context); |
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//place rules into context for further usages |
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$context->setRuleIds($rules->getIds()); |
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//recalculate cart for new context rules |
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$new = $this->processor->process($cart, $context, $behaviorContext); |
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$recalculate = $this->cartChanged($cart, $new); |
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$cart = $new; |
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++$iteration; |
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} while ($recalculate); |
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$index = 0; |
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foreach ($rules as $rule) { |
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++$index; |
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$this->logger->info( |
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sprintf('#%s Rule detection: %s with priority %s (id: %s)', $index, $rule->getName(), $rule->getPriority(), $rule->getId()) |
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); |
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} |
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$context->setRuleIds($rules->getIds()); |
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// save the cart if errors exist, so the errors get persisted |
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if ($cart->getErrors()->count() > 0) { |
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$this->cartPersister->save($cart, $context); |
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} |
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return new RuleLoaderResult($cart, $rules); |
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} |
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private function loadRules(Context $context): RuleCollection |
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{ |
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if ($this->rules !== null) { |
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return $this->rules; |
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} |
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$item = $this->cache->getItem(self::CHECKOUT_RULE_LOADER_CACHE_KEY); |
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$rules = $item->get(); |
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if ($item->isHit() && $rules) { |
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return $this->rules = $rules; |
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} |
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$rules = $this->ruleLoader->load($context); |
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$item->set($rules); |
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$this->cache->save($item); |
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return $this->rules = $rules; |
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} |
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private function cartChanged(Cart $previous, Cart $current): bool |
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{ |
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$previousLineItems = $previous->getLineItems(); |
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$currentLineItems = $current->getLineItems(); |
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return $previousLineItems->count() !== $currentLineItems->count() |
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|| $previous->getPrice()->getTotalPrice() !== $current->getPrice()->getTotalPrice() |
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|| $previousLineItems->getKeys() !== $currentLineItems->getKeys() |
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|| $previousLineItems->getTypes() !== $currentLineItems->getTypes() |
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; |
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} |
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} |
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shopware /
platform
