<?php 
 
/* 
 * This file is part of the API Platform project. 
 * 
 * (c) Kévin Dunglas <dunglas@gmail.com> 
 * 
 * For the full copyright and license information, please view the LICENSE 
 * file that was distributed with this source code. 
 */ 
 
declare(strict_types=1); 
 
namespace ApiPlatform\Serializer; 
 
use ApiPlatform\Core\Api\OperationType; 
use ApiPlatform\Core\Metadata\Resource\Factory\ResourceMetadataFactoryInterface; 
use ApiPlatform\Core\Metadata\Resource\ResourceMetadata; 
use ApiPlatform\Core\Swagger\Serializer\DocumentationNormalizer; 
use ApiPlatform\Exception\RuntimeException; 
use ApiPlatform\Metadata\CollectionOperationInterface; 
use ApiPlatform\Metadata\Resource\Factory\ResourceMetadataCollectionFactoryInterface; 
use ApiPlatform\Util\RequestAttributesExtractor; 
use Symfony\Component\HttpFoundation\Request; 
use Symfony\Component\Serializer\Encoder\CsvEncoder; 
 
/** 
 * @author Kévin Dunglas <dunglas@gmail.com> 
 */ 
final class SerializerContextBuilder implements SerializerContextBuilderInterface 
{ 
    private $resourceMetadataFactory; 
 
    public function __construct($resourceMetadataFactory) 
    { 
        $this->resourceMetadataFactory = $resourceMetadataFactory; 
 
        if (!$resourceMetadataFactory instanceof ResourceMetadataCollectionFactoryInterface) { 
            trigger_deprecation('api-platform/core', '2.7', sprintf('Use "%s" instead of "%s".', ResourceMetadataCollectionFactoryInterface::class, ResourceMetadataFactoryInterface::class)); 
        } 
    } 
 
    public function createFromRequest(Request $request, bool $normalization, array $attributes = null): array 
    { 
        if (null === $attributes && !$attributes = RequestAttributesExtractor::extractAttributes($request)) { 
            throw new RuntimeException('Request attributes are not valid.'); 
        } 
 
        // TODO remove call to getContentType() when requiring symfony/http-foundation ≥ 6.2 
        $contentTypeFormat = method_exists($request, 'getContentTypeFormat') 
            ? $request->getContentTypeFormat() 
            : $request->getContentType(); 
 
        // TODO: 3.0 change the condition to remove the ResourceMetadataFactorym only used to skip null values 
        if ( 
            $this->resourceMetadataFactory instanceof ResourceMetadataCollectionFactoryInterface 
            && (isset($attributes['operation_name']) || isset($attributes['operation'])) 
        ) { 
            $operation = $attributes['operation'] ?? $this->resourceMetadataFactory->create($attributes['resource_class'])->getOperation($attributes['operation_name']); 
            $context = $normalization ? ($operation->getNormalizationContext() ?? []) : ($operation->getDenormalizationContext() ?? []); 
            $context['operation_name'] = $operation->getName(); 
            $context['operation'] = $operation; 
            $context['resource_class'] = $attributes['resource_class']; 
            // TODO: 3.0 becomes true by default 
            $context['skip_null_values'] = $context['skip_null_values'] ?? $this->shouldSkipNullValues($attributes['resource_class'], $context['operation_name']); 
            // TODO: remove in 3.0, operation type will not exist anymore 
            $context['operation_type'] = $operation instanceof CollectionOperationInterface ? OperationType::COLLECTION : OperationType::ITEM; 
            $context['iri_only'] = $context['iri_only'] ?? false; 
            $context['request_uri'] = $request->getRequestUri(); 
            $context['uri'] = $request->getUri(); 
            $context['input'] = $operation->getInput(); 
            $context['output'] = $operation->getOutput(); 
 
            // Special case as this is usually handled by our OperationContextTrait, here we want to force the IRI in the response 
            if (!$operation instanceof CollectionOperationInterface && method_exists($operation, 'getItemUriTemplate') && $operation->getItemUriTemplate()) { 
                $context['item_uri_template'] = $operation->getItemUriTemplate(); 
            } 
 
            $context['types'] = $operation->getTypes(); 
            $context['uri_variables'] = []; 
 
            foreach (array_keys($operation->getUriVariables() ?? []) as $parameterName) { 
                $context['uri_variables'][$parameterName] = $request->attributes->get($parameterName); 
            } 
 
            if (!$normalization) { 
                if (!isset($context['api_allow_update'])) { 
                    $context['api_allow_update'] = \in_array($method = $request->getMethod(), ['PUT', 'PATCH'], true); 
 
                    if ($context['api_allow_update'] && 'PATCH' === $method) { 
                        $context['deep_object_to_populate'] = $context['deep_object_to_populate'] ?? true; 
                    } 
                } 
 
                if ('csv' === $contentTypeFormat) { 
                    $context[CsvEncoder::AS_COLLECTION_KEY] = false; 
                } 
            } 
 
            return $context; 
        } 
 
        /** @var ResourceMetadata $resourceMetadata */ 
        $resourceMetadata = $this->resourceMetadataFactory->create($attributes['resource_class']); 
        $key = $normalization ? 'normalization_context' : 'denormalization_context'; 
        if (isset($attributes['collection_operation_name'])) { 
            $operationKey = 'collection_operation_name'; 
            $operationType = OperationType::COLLECTION; 
        } elseif (isset($attributes['item_operation_name'])) { 
            $operationKey = 'item_operation_name'; 
            $operationType = OperationType::ITEM; 
        } else { 
            $operationKey = 'subresource_operation_name'; 
            $operationType = OperationType::SUBRESOURCE; 
        } 
 
        $context = $resourceMetadata->getTypedOperationAttribute($operationType, $attributes[$operationKey], $key, [], true); 
        $context['operation_type'] = $operationType; 
        $context[$operationKey] = $attributes[$operationKey]; 
        $context['iri_only'] = $resourceMetadata->getAttribute('normalization_context')['iri_only'] ?? false; 
        $context['input'] = $resourceMetadata->getTypedOperationAttribute($operationType, $attributes[$operationKey], 'input', null, true); 
        $context['output'] = $resourceMetadata->getTypedOperationAttribute($operationType, $attributes[$operationKey], 'output', null, true); 
 
        if (!$normalization) { 
            if (!isset($context['api_allow_update'])) { 
                $context['api_allow_update'] = \in_array($method = $request->getMethod(), ['PUT', 'PATCH'], true); 
 
                if ($context['api_allow_update'] && 'PATCH' === $method) { 
                    $context['deep_object_to_populate'] = $context['deep_object_to_populate'] ?? true; 
                } 
            } 
 
            if ('csv' === $contentTypeFormat) { 
                $context[CsvEncoder::AS_COLLECTION_KEY] = false; 
            } 
        } 
 
        $context['resource_class'] = $attributes['resource_class']; 
        $context['request_uri'] = $request->getRequestUri(); 
        $context['uri'] = $request->getUri(); 
 
        if (isset($attributes['subresource_context'])) { 
            $context['subresource_identifiers'] = []; 
 
            foreach ($attributes['subresource_context']['identifiers'] as $parameterName => [$resourceClass]) { 
                if (!isset($context['subresource_resources'][$resourceClass])) { 
                    $context['subresource_resources'][$resourceClass] = []; 
                } 
 
                $context['subresource_identifiers'][$parameterName] = $context['subresource_resources'][$resourceClass][$parameterName] = $request->attributes->get($parameterName); 
            } 
        } 
 
        if (isset($attributes['subresource_property'])) { 
            $context['subresource_property'] = $attributes['subresource_property']; 
            $context['subresource_resource_class'] = $attributes['subresource_resource_class'] ?? null; 
        } 
 
        unset($context[DocumentationNormalizer::SWAGGER_DEFINITION_NAME]); 
 
        if (isset($context['skip_null_values'])) { 
            return $context; 
        } 
 
        // TODO: We should always use `skip_null_values` but changing this would be a BC break, for now use it only when `merge-patch+json` is activated on a Resource 
        if (!$this->resourceMetadataFactory instanceof ResourceMetadataCollectionFactoryInterface) { 
            foreach ($resourceMetadata->getItemOperations() as $operation) { 
                if ('PATCH' === ($operation['method'] ?? '') && \in_array('application/merge-patch+json', $operation['input_formats']['json'] ?? [], true)) { 
                    $context['skip_null_values'] = true; 
 
                    break; 
                } 
            } 
        } else { 
            $context['skip_null_values'] = $this->shouldSkipNullValues($attributes['resource_class'], $attributes['operation_name']); 
        } 
 
        return $context; 
    } 
 
    /** 
     * TODO: remove in 3.0, this will have no impact and skip_null_values will be default, no more resourceMetadataFactory call in this class. 
     */ 
    private function shouldSkipNullValues(string $class, string $operationName): bool 
    { 
        if (!$this->resourceMetadataFactory) { 
            return false; 
        } 
 
        $collection = $this->resourceMetadataFactory->create($class); 
        foreach ($collection as $metadata) { 
            foreach ($metadata->getOperations() as $operation) { 
                if ('PATCH' === ($operation->getMethod() ?? '') && \in_array('application/merge-patch+json', $operation->getInputFormats()['json'] ?? [], true)) { 
                    return true; 
                } 
            } 
        } 
 
        return false; 
    } 
} 
 
class_alias(SerializerContextBuilder::class, \ApiPlatform\Core\Serializer\SerializerContextBuilder::class);