ynloultratech / graphql-bundle

src/Util/GraphQLBuilder.php

<?php
/*******************************************************************************
 *  This file is part of the GraphQL Bundle package.
 *
 *  (c) YnloUltratech <support@ynloultratech.com>
 *
 *  For the full copyright and license information, please view the LICENSE
 *  file that was distributed with this source code.
 ******************************************************************************/

namespace Ynlo\GraphQLBundle\Util;

use GraphQL\Type\Definition\Type;
use Symfony\Component\ExpressionLanguage\ExpressionLanguage;
use Ynlo\GraphQLBundle\Annotation\Argument;
use Ynlo\GraphQLBundle\Definition\ArgumentAwareInterface;
use Ynlo\GraphQLBundle\Definition\FieldsAwareDefinitionInterface;
use Ynlo\GraphQLBundle\Type\Registry\TypeRegistry;

class GraphQLBuilder
{
    public static function resolveFields(FieldsAwareDefinitionInterface $definition): array
    {
        $fields = [];
        foreach ($definition->getFields() as $fieldDefinition) {
            try {
                $type = TypeRegistry::get($fieldDefinition->getType());
            } catch (\UnexpectedValueException $exception) {
                $msg = sprintf(
                    'The property "%s" of object "%s" does not have valid type. %s',
                    $fieldDefinition->getName(),
                    $definition->getName(),
                    $exception->getMessage()
                );
                throw new \RuntimeException($msg);
            }

            if ($fieldDefinition->isList()) {
                if ($fieldDefinition->isNonNullList()) {
                    $type = Type::nonNull($type);

$type of type GraphQL\Type\Definition\Type is incompatible with the type GraphQL\Type\Definition\NullableType expected by parameter $wrappedType of GraphQL\Type\Definition\Type::nonNull().

                }
                $type = Type::listOf($type);
            }

            if ($fieldDefinition->isNonNull()) {
                $type = Type::nonNull($type);
            }

            $fields[$fieldDefinition->getName()] = [
                'type' => $type,
                'description' => $fieldDefinition->getDescription(),
                'deprecationReason' => $fieldDefinition->getDeprecationReason(),
                'args' => GraphQLBuilder::buildArguments($fieldDefinition),
                'complexity' => GraphQLBuilder::buildComplexityFn($fieldDefinition->getComplexity()),
            ];
        }

        return $fields;
    }

    public static function buildArguments(ArgumentAwareInterface $argumentAware): array
    {
        $args = [];
        foreach ($argumentAware->getArguments() as $argDefinition) {
            $arg = [];
            $arg['description'] = $argDefinition->getDescription();
            $argType = TypeRegistry::get($argDefinition->getType());

            if ($argDefinition->isList()) {
                if ($argDefinition->isNonNullList()) {
                    $argType = Type::nonNull($argType);

$argType of type GraphQL\Type\Definition\Type is incompatible with the type GraphQL\Type\Definition\NullableType expected by parameter $wrappedType of GraphQL\Type\Definition\Type::nonNull().

                }
                $argType = Type::listOf($argType);
            }

            if ($argDefinition->isNonNull()) {
                $argType = Type::nonNull($argType);
            }

            $arg['type'] = $argType;
            if ($argDefinition->getDefaultValue() !== Argument::UNDEFINED_ARGUMENT) {
                $arg['defaultValue'] = $argDefinition->getDefaultValue();
            }
            $args[$argDefinition->getName()] = $arg;
        }

        return $args;
    }

    public static function buildComplexityFn(?string $complexity): ?callable
    {
        if (null === $complexity) {
            return null;
        }

        if (is_numeric($complexity)) {
            return function ($childrenComplexity) use ($complexity) {
                return $childrenComplexity + $complexity;
            };
        }

        // support only static string callable func
        if (\is_string($complexity) && \is_callable($complexity)) {
            return $complexity;

The expression return $complexity returns the type string which is incompatible with the type-hinted return callable|null.

        }

        $el = new ExpressionLanguage();

        return function ($childrenComplexity, $args) use ($el, $complexity) {
            return $el->evaluate($complexity, array_merge($args, ['children_complexity' => $childrenComplexity]));
        };
    }
}