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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /*  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This file is part of the Sylius package.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * (c) Paweł Jędrzejewski  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * For the full copyright and license information, please view the LICENSE  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * file that was distributed with this source code.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Sylius\Component\Product\Generator;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Sylius\Component\Product\Checker\ProductVariantsParityCheckerInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Sylius\Component\Product\Factory\ProductVariantFactoryInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Sylius\Component\Product\Model\ProductInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Sylius\Component\Product\Model\ProductVariantInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Webmozart\Assert\Assert;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author Paweł Jędrzejewski <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author Łukasz Chruściel <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                final class ProductVariantGenerator implements ProductVariantGeneratorInterface  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var ProductVariantFactoryInterface  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $productVariantFactory;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var CartesianSetBuilder  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $setBuilder;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var ProductVariantsParityCheckerInterface  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $variantsParityChecker;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param ProductVariantFactoryInterface $productVariantFactory  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param ProductVariantsParityCheckerInterface $variantsParityChecker  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function __construct(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ProductVariantFactoryInterface $productVariantFactory,  | 
            
                            
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                        ProductVariantsParityCheckerInterface $variantsParityChecker  | 
            
                            
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                    ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->productVariantFactory = $productVariantFactory;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->setBuilder = new CartesianSetBuilder();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->variantsParityChecker = $variantsParityChecker;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * {@inheritdoc} | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function generate(ProductInterface $product)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        Assert::true($product->hasOptions(), 'Cannot generate variants for an object without options.');  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $optionSet = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $optionMap = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        foreach ($product->getOptions() as $key => $option) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            foreach ($option->getValues() as $value) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $optionSet[$key][] = $value->getId();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $optionMap[$value->getId()] = $value;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $permutations = $this->setBuilder->build($optionSet);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        foreach ($permutations as $permutation) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $variant = $this->createVariant($product, $optionMap, $permutation);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if (!$this->variantsParityChecker->checkParity($variant, $product)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $product->addVariant($variant);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param ProductInterface $product  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array $optionMap  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param mixed $permutation  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return ProductVariantInterface  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    protected function createVariant(ProductInterface $product, array $optionMap, $permutation)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        /** @var ProductVariantInterface $variant */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $variant = $this->productVariantFactory->createForProduct($product);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->addOptionValue($variant, $optionMap, $permutation);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return $variant;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param ProductVariantInterface $variant  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array $optionMap  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param mixed $permutation  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private function addOptionValue(ProductVariantInterface $variant, array $optionMap, $permutation)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!is_array($permutation)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $variant->addOptionValue($optionMap[$permutation]);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        foreach ($permutation as $id) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $variant->addOptionValue($optionMap[$id]);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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Very long variable names usually make code harder to read. It is therefore recommended not to make variable names too verbose.