<?php declare(strict_types=1);namespace Shopware\Core\Checkout\Promotion\Validator;use Doctrine\DBAL\Connection;use Shopware\Core\Checkout\Promotion\Aggregate\PromotionDiscount\PromotionDiscountDefinition;use Shopware\Core\Checkout\Promotion\Aggregate\PromotionDiscount\PromotionDiscountEntity;use Shopware\Core\Checkout\Promotion\PromotionDefinition;use Shopware\Core\Framework\Api\Exception\ResourceNotFoundException;use Shopware\Core\Framework\DataAbstractionLayer\Write\Command\InsertCommand;use Shopware\Core\Framework\DataAbstractionLayer\Write\Command\UpdateCommand;use Shopware\Core\Framework\DataAbstractionLayer\Write\Command\WriteCommand;use Shopware\Core\Framework\DataAbstractionLayer\Write\Validation\PreWriteValidationEvent;use Shopware\Core\Framework\Validation\WriteConstraintViolationException;use Symfony\Component\EventDispatcher\EventSubscriberInterface;use Symfony\Component\Validator\ConstraintViolation;use Symfony\Component\Validator\ConstraintViolationInterface;use Symfony\Component\Validator\ConstraintViolationList;class PromotionValidator implements EventSubscriberInterface{ /** * this is the min value for all types * (absolute, percentage, ...) */ private const DISCOUNT_MIN_VALUE = 0.00; /** * this is used for the maximum allowed * percentage discount. */ private const DISCOUNT_PERCENTAGE_MAX_VALUE = 100.0; /** * @var Connection */ private $connection; /** @var array */ private $databasePromotions; /** @var array */ private $databaseDiscounts; public function __construct(Connection $connection) { $this->connection = $connection; } public static function getSubscribedEvents(): array { return [ PreWriteValidationEvent::class => 'preValidate', ]; } /** * This function validates our incoming delta-values for promotions * and its aggregation. It does only check for business relevant rules and logic. * All primitive "required" constraints are done inside the definition of the entity. * * @throws WriteConstraintViolationException */ public function preValidate(PreWriteValidationEvent $event): void { $this->collect($event->getCommands()); $violationList = new ConstraintViolationList(); $writeCommands = $event->getCommands(); foreach ($writeCommands as $index => $command) { if (!$command instanceof InsertCommand && !$command instanceof UpdateCommand) { continue; } switch (get_class($command->getDefinition())) { case PromotionDefinition::class: /** @var string $promotionId */ $promotionId = $command->getPrimaryKey()['id']; try { /** @var array $promotion */ $promotion = $this->getPromotionById($promotionId); } catch (ResourceNotFoundException $ex) { $promotion = []; } $this->validatePromotion( $promotion, $command->getPayload(), $violationList, $index ); break; case PromotionDiscountDefinition::class: /** @var string $discountId */ $discountId = $command->getPrimaryKey()['id']; try { /** @var array $discount */ $discount = $this->getDiscountById($discountId); } catch (ResourceNotFoundException $ex) { $discount = []; } $this->validateDiscount( $discount, $command->getPayload(), $violationList, $index ); break; } } if ($violationList->count() > 0) { $event->getExceptions()->add(new WriteConstraintViolationException($violationList)); } } /** * This function collects all database data that might be * required for any of the received entities and values. * * @throws ResourceNotFoundException * @throws \Doctrine\DBAL\DBALException */ private function collect(array $writeCommands): void { $promotionIds = []; $discountIds = []; /** @var WriteCommand $command */ foreach ($writeCommands as $command) { if (!$command instanceof InsertCommand && !$command instanceof UpdateCommand) { continue; } switch (get_class($command->getDefinition())) { case PromotionDefinition::class: $promotionIds[] = $command->getPrimaryKey()['id']; break; case PromotionDiscountDefinition::class: $discountIds[] = $command->getPrimaryKey()['id']; break; } } // why do we have inline sql queries in here? // because we want to avoid any other private functions that accidentally access // the database. all private getters should only access the local in-memory list // to avoid additional database queries. $promotionQuery = $this->connection->executeQuery( 'SELECT * FROM `promotion` WHERE `id` IN (:ids)', ['ids' => $promotionIds], ['ids' => Connection::PARAM_STR_ARRAY] ); $this->databasePromotions = $promotionQuery->fetchAll() ?? []; $discountQuery = $this->connection->executeQuery( 'SELECT * FROM `promotion_discount` WHERE `id` IN (:ids)', ['ids' => $discountIds], ['ids' => Connection::PARAM_STR_ARRAY] ); $this->databaseDiscounts = $discountQuery->fetchAll() ?? []; } /** * Validates the provided Promotion data and adds * violations to the provided list of violations, if found. * * @param array $promotion the current promotion from the database as array type * @param array $payload the incoming delta-data * @param ConstraintViolationList $violationList the list of violations that needs to be filled * @param int $index the index of this promotion in the command queue * * @throws \Exception */ private function validatePromotion(array $promotion, array $payload, ConstraintViolationList $violationList, int $index): void { /** @var string|null $validFrom */ $validFrom = $this->getValue($payload, 'valid_from', $promotion); /** @var string|null $validUntil */ $validUntil = $this->getValue($payload, 'valid_until', $promotion); /** @var bool $useCodes */ $useCodes = $this->getValue($payload, 'use_codes', $promotion); /** @var bool $useCodesIndividual */ $useCodesIndividual = $this->getValue($payload, 'use_individual_codes', $promotion); /** @var string|null $pattern */ $pattern = $this->getValue($payload, 'individual_code_pattern', $promotion); /** @var string|null $promotionId */ $promotionId = $this->getValue($payload, 'id', $promotion); /** @var string|null $code */ $code = $this->getValue($payload, 'code', $promotion); if ($code === null) { $code = ''; } if ($pattern === null) { $pattern = ''; } $trimmedCode = trim($code); // if we have both a date from and until, make sure that // the dateUntil is always in the future. if ($validFrom !== null && $validUntil !== null) { // now convert into real date times // and start comparing them $dateFrom = new \DateTime($validFrom); $dateUntil = new \DateTime($validUntil); if ($dateUntil < $dateFrom) { $violationList->add($this->buildViolation( 'Expiration Date of Promotion must be after Start of Promotion', $payload['valid_until'], 'validUntil', 'PROMOTION_VALID_UNTIL_VIOLATION', $index )); } } // check if we use global codes if ($useCodes && !$useCodesIndividual) { // make sure the code is not empty if ($trimmedCode === '') { $violationList->add($this->buildViolation( 'Please provide a valid code', $code, 'code', 'PROMOTION_EMPTY_CODE_VIOLATION', $index )); } // if our code length is greater than the trimmed one, // this means we have leading or trailing whitespaces if (mb_strlen($code) > mb_strlen($trimmedCode)) { $violationList->add($this->buildViolation( 'Code may not have any leading or ending whitespaces', $code, 'code', 'PROMOTION_CODE_WHITESPACE_VIOLATION', $index )); } } if ($pattern !== '' && $this->isCodePatternAlreadyUsed($pattern, $promotionId)) { $violationList->add($this->buildViolation( 'Code Pattern already exists in other promotion. Please provide a different pattern.', $pattern, 'individualCodePattern', 'PROMOTION_DUPLICATE_PATTERN_VIOLATION', $index )); } // lookup global code if it does already exist in database if ($trimmedCode !== '' && $this->isCodeAlreadyUsed($trimmedCode, $promotionId)) { $violationList->add($this->buildViolation( 'Code already exists in other promotion. Please provide a different code.', $trimmedCode, 'code', 'PROMOTION_DUPLICATED_CODE_VIOLATION', $index )); } } /** * Validates the provided PromotionDiscount data and adds * violations to the provided list of violations, if found. * * @param array $discount the discount as array from the database * @param array $payload the incoming delta-data * @param ConstraintViolationList $violationList the list of violations that needs to be filled */ private function validateDiscount(array $discount, array $payload, ConstraintViolationList $violationList, int $index): void { /** @var string $type */ $type = $this->getValue($payload, 'type', $discount); /** @var float|null $value */ $value = $this->getValue($payload, 'value', $discount); if ($value === null) { return; } if ($value < self::DISCOUNT_MIN_VALUE) { $violationList->add($this->buildViolation( 'Value must not be less than ' . self::DISCOUNT_MIN_VALUE, $value, 'value', 'PROMOTION_DISCOUNT_MIN_VALUE_VIOLATION', $index )); } switch ($type) { case PromotionDiscountEntity::TYPE_PERCENTAGE: if ($value > self::DISCOUNT_PERCENTAGE_MAX_VALUE) { $violationList->add($this->buildViolation( 'Absolute value must not greater than ' . self::DISCOUNT_PERCENTAGE_MAX_VALUE, $value, 'value', 'PROMOTION_DISCOUNT_MAX_VALUE_VIOLATION', $index )); } break; } } /** * Gets a value from an array. It also does clean checks if * the key is set, and also provides the option for default values. * * @param array $data the data array * @param string $key the requested key in the array * @param array $dbRow the db row of from the database * * @return mixed the object found in the key, or the default value */ private function getValue(array $data, string $key, array $dbRow) { // try in our actual data set if (isset($data[$key])) { return $data[$key]; } // try in our db row fallback if (isset($dbRow[$key])) { return $dbRow[$key]; } // use default return null; } /** * @throws ResourceNotFoundException * * @return array|mixed */ private function getPromotionById(string $id) { /** @var array $promotion */ foreach ($this->databasePromotions as $promotion) { if ($promotion['id'] === $id) { return $promotion; } } throw new ResourceNotFoundException('promotion', [$id]); } /** * @throws ResourceNotFoundException * * @return array|mixed */ private function getDiscountById(string $id) { /** @var array $discount */ foreach ($this->databaseDiscounts as $discount) { if ($discount['id'] === $id) { return $discount; } } throw new ResourceNotFoundException('promotion_discount', [$id]); } /** * This helper function builds an easy violation * object for our validator. * * @param string $message the error message * @param mixed $invalidValue the actual invalid value * @param string $propertyPath the property path from the root value to the invalid value without initial slash * @param string $code the error code of the violation * @param int $index the position of this entity in the command queue * * @return ConstraintViolationInterface the built constraint violation */ private function buildViolation(string $message, $invalidValue, string $propertyPath, string $code, int $index): ConstraintViolationInterface { $formattedPath = "/{$index}/{$propertyPath}"; return new ConstraintViolation( $message, '', [ 'value' => $invalidValue, ], $invalidValue, $formattedPath, $invalidValue, null, $code ); } /** * Gets if the provided pattern is already used in another promotion. */ private function isCodePatternAlreadyUsed(string $pattern, ?string $promotionId): bool { $qb = $this->connection->createQueryBuilder(); $query = $qb ->select('id') ->from('promotion') ->where($qb->expr()->eq('individual_code_pattern', ':pattern')) ->setParameter(':pattern', $pattern); $promotions = $query->execute()->fetchAll(); /** @var array $p */ foreach ($promotions as $p) { // if we have a promotion id to verify // and a promotion with another id exists, then return that is used if ($promotionId !== null && $p['id'] !== $promotionId) { return true; } } return false; } /** * Gets if the provided code is already used as global * or individual code in another promotion. */ private function isCodeAlreadyUsed(string $code, ?string $promotionId): bool { $qb = $this->connection->createQueryBuilder(); // check if individual code. // if we dont have a promotion Id only // check if its existing somewhere, // if we have an Id, verify if its existing in another promotion $query = $qb ->select('id') ->from('promotion_individual_code') ->where($qb->expr()->eq('code', ':code')) ->setParameter(':code', $code); if ($promotionId !== null) { $query->andWhere($qb->expr()->neq('promotion_id', ':promotion_id')) ->setParameter(':promotion_id', $promotionId); } $existingIndividual = count($query->execute()->fetchAll()) > 0; if ($existingIndividual) { return true; } $qb = $this->connection->createQueryBuilder(); // check if it is a global promotion code. // again with either an existing promotion Id // or without one. $query = $qb->select('id') ->from('promotion') ->where($qb->expr()->eq('code', ':code')) ->setParameter(':code', $code); if ($promotionId !== null) { $query->andWhere($qb->expr()->neq('id', ':id')) ->setParameter(':id', $promotionId); } return count($query->execute()->fetchAll()) > 0; }}