InputValidator::__invoke() - Code Metrics - Inspection of "Feature/generator" - overblog/GraphQLBundle - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#682)

by Timur

created 2020-07-05 09:54 UTC

InputValidator::__invoke() A

↳ Parent: InputValidator

Complexity

Conditions	1
Paths	1

Size

Total Lines	3
Code Lines	1

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	1

Importance

Changes

Metric	Value
eloc	1
c	0
b	0
f	0
dl	0
loc	3
ccs	2
cts	2
cp	1
rs	10
cc	1
nc	1
nop	2
crap	1

<?php

declare(strict_types=1);

namespace Overblog\GraphQLBundle\Validator;

use GraphQL\Type\Definition\InputObjectType;
use GraphQL\Type\Definition\ObjectType;
use GraphQL\Type\Definition\ResolveInfo;
use Overblog\GraphQLBundle\Definition\ArgumentInterface;
use Overblog\GraphQLBundle\Validator\Exception\ArgumentsValidationException;
use Overblog\GraphQLBundle\Validator\Mapping\MetadataFactory;
use Overblog\GraphQLBundle\Validator\Mapping\ObjectMetadata;
use Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\Constraints\GroupSequence;
use Symfony\Component\Validator\Constraints\Valid;
use Symfony\Component\Validator\ConstraintViolationListInterface;
use Symfony\Component\Validator\Mapping\ClassMetadataInterface;
use Symfony\Component\Validator\Mapping\GetterMetadata;
use Symfony\Component\Validator\Mapping\PropertyMetadata;
use Symfony\Component\Validator\Validator\ValidatorInterface;

class InputValidator
{
    private const TYPE_PROPERTY = 'property';
    private const TYPE_GETTER = 'getter';

    private array $resolverArgs;
    private array $propertiesMapping;
    private array $classMapping;
    private ValidatorInterface $validator;
    private MetadataFactory $metadataFactory;
    private ResolveInfo $info;
    private ValidatorFactory $validatorFactory;

    /** @var ClassMetadataInterface[] */
    private array $cachedMetadata = [];

    /**
     * InputValidator constructor.
     */
    public function __construct(
        array $resolverArgs,
        ?ValidatorInterface $validator,
        ValidatorFactory $factory,
        array $propertiesMapping = [],
        array $classMapping = []
    ) {
        if (null === $validator) {
            throw new ServiceNotFoundException(
                "The 'validator' service is not found. To use the 'InputValidator' you need to install the
                Symfony Validator Component first. See: 'https://symfony.com/doc/current/validation.html'"
            );
        }

        $this->resolverArgs = $this->mapResolverArgs(...$resolverArgs);
        $this->info = $this->resolverArgs['info'];
        $this->propertiesMapping = $propertiesMapping;
        $this->classMapping = $classMapping;
        $this->validator = $validator;
        $this->validatorFactory = $factory;
        $this->metadataFactory = new MetadataFactory();
    }

    /**
     * Converts a numeric array of resolver args to an associative one.
     *
     * @param mixed             $value
     * @param ArgumentInterface $args
     * @param mixed             $context
     * @param ResolveInfo       $info
     *
     * @return array
     */
    private function mapResolverArgs($value, ArgumentInterface $args, $context, ResolveInfo $info): array
    {
        return [
            'value' => $value,
            'args' => $args,
            'context' => $context,
            'info' => $info,
        ];
    }

    /**
     * @param string|array|null $groups
     *
     * @throws ArgumentsValidationException
     */
    public function validate($groups = null, bool $throw = true): ?ConstraintViolationListInterface
    {
        $rootObject = new ValidationNode($this->info->parentType, $this->info->fieldName, null, $this->resolverArgs);

        $this->buildValidationTree(
            $rootObject,
            $this->propertiesMapping,
            $this->classMapping,
            $this->resolverArgs['args']->getArrayCopy()
        );

        $validator = $this->validatorFactory->createValidator($this->metadataFactory);

        $errors = $validator->validate($rootObject, null, $groups);

        if ($throw && $errors->count() > 0) {
            throw new ArgumentsValidationException($errors);
        } else {
            return $errors;
        }
    }

    /**
     * Creates a composition of ValidationNode objects from args
     * and simultaneously applies to them validation constraints.
     */
    protected function buildValidationTree(ValidationNode $rootObject, array $propertiesMapping, array $classMapping, array $args): ValidationNode
    {
        $metadata = new ObjectMetadata($rootObject);

        if (!empty($classMapping)) {
            $this->applyClassConstraints($metadata, $classMapping);
        }

        foreach ($propertiesMapping as $property => $params) {
            if (!empty($params['cascade']) && isset($args[$property])) {
                $options = $params['cascade'];

                /** @var ObjectType|InputObjectType $type */
                $type = $options['referenceType'];

                if ($options['isCollection']) {
                    $rootObject->$property = $this->createCollectionNode($args[$property], $type, $rootObject);
                } else {
                    $rootObject->$property = $this->createObjectNode($args[$property], $type, $rootObject);
                }

                $valid = new Valid();

                if (!empty($options['groups'])) {
                    $valid->groups = $options['groups'];
                }

                $metadata->addPropertyConstraint($property, $valid);
            } else {
                $rootObject->$property = $args[$property] ?? null;
            }

            $this->restructureShortForm($params);

            foreach ($params ?? [] as $key => $value) {
                switch ($key) {
                    case 'link':
                        [$fqcn, $property, $type] = $value;

                        if (!\in_array($fqcn, $this->cachedMetadata)) {
                            $this->cachedMetadata[$fqcn] = $this->validator->getMetadataFor($fqcn);
                        }

                        // Get metadata from the property and it's getters
                        $propertyMetadata = $this->cachedMetadata[$fqcn]->getPropertyMetadata($property);

                        foreach ($propertyMetadata as $memberMetadata) {
                            // Allow only constraints specified by the "link" matcher
                            if (self::TYPE_GETTER === $type) {
                                if (!$memberMetadata instanceof GetterMetadata) {
                                    continue;
                                }
                            } elseif (self::TYPE_PROPERTY === $type) {
                                if (!$memberMetadata instanceof PropertyMetadata) {
                                    continue;
                                }
                            }

                            $metadata->addPropertyConstraints($property, $memberMetadata->getConstraints());
                        }

                        break;
                    case 'constraints':
                        $metadata->addPropertyConstraints($property, $value);
                        break;
                    case 'cascade':
                        break;
                }
            }
        }

        $this->metadataFactory->addMetadata($metadata);

        return $rootObject;
    }

    /**
     * @param ObjectType|InputObjectType $type
     */
    private function createCollectionNode(array $values, $type, ValidationNode $parent): array
    {
        $collection = [];

        foreach ($values as $value) {
            $collection[] = $this->createObjectNode($value, $type, $parent);
        }

        return $collection;
    }

    /**
     * @param ObjectType|InputObjectType $type
     */
    private function createObjectNode(array $value, $type, ValidationNode $parent): ValidationNode
    {
        $classMapping = $type->config['validation'] ?? [];
        $propertiesMapping = [];

        foreach ($type->getFields() as $fieldName => $inputField) {
            $propertiesMapping[$fieldName] = $inputField->config['validation'];
        }

        return $this->buildValidationTree(
            new ValidationNode($type, null, $parent, $this->resolverArgs),
            $propertiesMapping,
            $classMapping,
            $value
        );
    }

    private function applyClassConstraints(ObjectMetadata $metadata, array $rules): void
    {
        $this->restructureShortForm($rules);

        foreach ($rules as $key => $value) {
            switch ($key) {
                case 'link':
                    $linkedMetadata = $this->validator->getMetadataFor($value);
                    $metadata->addConstraints($linkedMetadata->getConstraints());
                    break;
                case 'constraints':
                    foreach ($value as $constraint) {
                        if ($constraint instanceof Constraint) {
                            $metadata->addConstraint($constraint);
                        } elseif ($constraint instanceof GroupSequence) {
                            $metadata->setGroupSequence($constraint);
                        }
                    }
                    break;
            }
        }
    }

    /**
     * @param array $rules
     */
    private function restructureShortForm(array &$rules): void
    {
        if (isset($rules[0])) {
            $rules = ['constraints' => $rules];
        }
    }

    /**
     * @param string|array|null $groups
     *
     * @throws ArgumentsValidationException
     */
    public function __invoke($groups = null, bool $throw = true): ?ConstraintViolationListInterface
    {
        return $this->validate($groups, $throw);
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace Overblog\GraphQLBundle\Validator;
6
7		use GraphQL\Type\Definition\InputObjectType;
8		use GraphQL\Type\Definition\ObjectType;
9		use GraphQL\Type\Definition\ResolveInfo;
10		use Overblog\GraphQLBundle\Definition\ArgumentInterface;
11		use Overblog\GraphQLBundle\Validator\Exception\ArgumentsValidationException;
12		use Overblog\GraphQLBundle\Validator\Mapping\MetadataFactory;
13		use Overblog\GraphQLBundle\Validator\Mapping\ObjectMetadata;
14		use Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException;
15		use Symfony\Component\Validator\Constraint;
16		use Symfony\Component\Validator\Constraints\GroupSequence;
17		use Symfony\Component\Validator\Constraints\Valid;
18		use Symfony\Component\Validator\ConstraintViolationListInterface;
19		use Symfony\Component\Validator\Mapping\ClassMetadataInterface;
20		use Symfony\Component\Validator\Mapping\GetterMetadata;
21		use Symfony\Component\Validator\Mapping\PropertyMetadata;
22		use Symfony\Component\Validator\Validator\ValidatorInterface;
23
24		class InputValidator
25		{
26		private const TYPE_PROPERTY = 'property';
27		private const TYPE_GETTER = 'getter';
28
29		private array $resolverArgs;
30		private array $propertiesMapping;
31		private array $classMapping;
32		private ValidatorInterface $validator;
33		private MetadataFactory $metadataFactory;
34		private ResolveInfo $info;
35		private ValidatorFactory $validatorFactory;
36
37		/** @var ClassMetadataInterface[] */
38		private array $cachedMetadata = [];
39
40		/**
41		* InputValidator constructor.
42		*/
43	17	public function __construct(
44		array $resolverArgs,
45		?ValidatorInterface $validator,
46		ValidatorFactory $factory,
47		array $propertiesMapping = [],
48		array $classMapping = []
49		) {
50	17	if (null === $validator) {
51	1	throw new ServiceNotFoundException(
52	1	"The 'validator' service is not found. To use the 'InputValidator' you need to install the
53		Symfony Validator Component first. See: 'https://symfony.com/doc/current/validation.html'"
54		);
55		}
56
57	16	$this->resolverArgs = $this->mapResolverArgs(...$resolverArgs);
58	16	$this->info = $this->resolverArgs['info'];
59	16	$this->propertiesMapping = $propertiesMapping;
60	16	$this->classMapping = $classMapping;
61	16	$this->validator = $validator;
62	16	$this->validatorFactory = $factory;
63	16	$this->metadataFactory = new MetadataFactory();
64	16	}
65
66		/**
67		* Converts a numeric array of resolver args to an associative one.
68		*
69		* @param mixed $value
70		* @param ArgumentInterface $args
71		* @param mixed $context
72		* @param ResolveInfo $info
73		*
74		* @return array
75		*/
76	16	private function mapResolverArgs($value, ArgumentInterface $args, $context, ResolveInfo $info): array
77		{
78		return [
79	16	'value' => $value,
80	16	'args' => $args,
81	16	'context' => $context,
82	16	'info' => $info,
83		];
84		}
85
86		/**
87		* @param string\|array\|null $groups
88		*
89		* @throws ArgumentsValidationException
90		*/
91	16	public function validate($groups = null, bool $throw = true): ?ConstraintViolationListInterface
92		{
93	16	$rootObject = new ValidationNode($this->info->parentType, $this->info->fieldName, null, $this->resolverArgs);
94
95	16	$this->buildValidationTree(
96	16	$rootObject,
97	16	$this->propertiesMapping,
98	16	$this->classMapping,
99	16	$this->resolverArgs['args']->getArrayCopy()
100		);
101
102	16	$validator = $this->validatorFactory->createValidator($this->metadataFactory);
103
104	16	$errors = $validator->validate($rootObject, null, $groups);
105
106	16	if ($throw && $errors->count() > 0) {
107	6	throw new ArgumentsValidationException($errors);
108		} else {
109	10	return $errors;
110		}
111		}
112
113		/**
114		* Creates a composition of ValidationNode objects from args
115		* and simultaneously applies to them validation constraints.
116		*/
117	16	protected function buildValidationTree(ValidationNode $rootObject, array $propertiesMapping, array $classMapping, array $args): ValidationNode
118		{
119	16	$metadata = new ObjectMetadata($rootObject);
120
121	16	if (!empty($classMapping)) {
122	8	$this->applyClassConstraints($metadata, $classMapping);
123		}
124
125	16	foreach ($propertiesMapping as $property => $params) {
126	16	if (!empty($params['cascade']) && isset($args[$property])) {
127	6	$options = $params['cascade'];
128
129		/** @var ObjectType\|InputObjectType $type */
130	6	$type = $options['referenceType'];
131
132	6	if ($options['isCollection']) {
133	2	$rootObject->$property = $this->createCollectionNode($args[$property], $type, $rootObject);
134		} else {
135	6	$rootObject->$property = $this->createObjectNode($args[$property], $type, $rootObject);
136		}
137
138	6	$valid = new Valid();
139
140	6	if (!empty($options['groups'])) {
141	4	$valid->groups = $options['groups'];
142		}
143
144	6	$metadata->addPropertyConstraint($property, $valid);
145		} else {
146	16	$rootObject->$property = $args[$property] ?? null;
147		}
148
149	16	$this->restructureShortForm($params);
150
151	16	foreach ($params ?? [] as $key => $value) {
152		switch ($key) {
153	16	case 'link':
154	2	[$fqcn, $property, $type] = $value;
155
156	2	if (!\in_array($fqcn, $this->cachedMetadata)) {
157	2	$this->cachedMetadata[$fqcn] = $this->validator->getMetadataFor($fqcn);
158		}
159
160		// Get metadata from the property and it's getters
161	2	$propertyMetadata = $this->cachedMetadata[$fqcn]->getPropertyMetadata($property);
162
163	2	foreach ($propertyMetadata as $memberMetadata) {
164		// Allow only constraints specified by the "link" matcher
165	2	if (self::TYPE_GETTER === $type) {
166	2	if (!$memberMetadata instanceof GetterMetadata) {
167	2	continue;
168		}
169	2	} elseif (self::TYPE_PROPERTY === $type) {
170	2	if (!$memberMetadata instanceof PropertyMetadata) {
171	2	continue;
172		}
173		}
174
175	2	$metadata->addPropertyConstraints($property, $memberMetadata->getConstraints());
176		}
177
178	2	break;
179	14	case 'constraints':
180	14	$metadata->addPropertyConstraints($property, $value);
181	14	break;
182	6	case 'cascade':
183	6	break;
184		}
185		}
186		}
187
188	16	$this->metadataFactory->addMetadata($metadata);
189
190	16	return $rootObject;
191		}
192
193		/**
194		* @param ObjectType\|InputObjectType $type
195		*/
196	2	private function createCollectionNode(array $values, $type, ValidationNode $parent): array
197		{
198	2	$collection = [];
199
200	2	foreach ($values as $value) {
201	2	$collection[] = $this->createObjectNode($value, $type, $parent);
202		}
203
204	2	return $collection;
205		}
206
207		/**
208		* @param ObjectType\|InputObjectType $type
209		*/
210	6	private function createObjectNode(array $value, $type, ValidationNode $parent): ValidationNode
211		{
212	6	$classMapping = $type->config['validation'] ?? [];
213	6	$propertiesMapping = [];
214
215	6	foreach ($type->getFields() as $fieldName => $inputField) {
216	6	$propertiesMapping[$fieldName] = $inputField->config['validation'];
217		}
218
219	6	return $this->buildValidationTree(
220	6	new ValidationNode($type, null, $parent, $this->resolverArgs),
221		$propertiesMapping,
222		$classMapping,
223		$value
224		);
225		}
226
227	8	private function applyClassConstraints(ObjectMetadata $metadata, array $rules): void
228		{
229	8	$this->restructureShortForm($rules);
230
231	8	foreach ($rules as $key => $value) {
232		switch ($key) {
233	8	case 'link':
234	2	$linkedMetadata = $this->validator->getMetadataFor($value);
235	2	$metadata->addConstraints($linkedMetadata->getConstraints());
236	2	break;
237	8	case 'constraints':
238	8	foreach ($value as $constraint) {
239	8	if ($constraint instanceof Constraint) {
240	2	$metadata->addConstraint($constraint);
241	6	} elseif ($constraint instanceof GroupSequence) {
242	6	$metadata->setGroupSequence($constraint);
243		}
244		}
245	8	break;
246		}
247		}
248	8	}
249
250		/**
251		* @param array $rules
252		*/
253	16	private function restructureShortForm(array &$rules): void
254		{
255	16	if (isset($rules[0])) {
256	14	$rules = ['constraints' => $rules];
257		}
258	16	}
259
260		/**
261		* @param string\|array\|null $groups
262		*
263		* @throws ArgumentsValidationException
264		*/
265	10	public function __invoke($groups = null, bool $throw = true): ?ConstraintViolationListInterface
266		{
267	10	return $this->validate($groups, $throw);
268		}
269		}
270

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Pull Request — master (#682)

InputValidator::__invoke() A

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