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<?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\Api\QueryParameterValidator\Validator;

final class ArrayItems implements ValidatorInterface
{
    /**
     * {@inheritdoc}
     */
    public function validate(string $name, array $filterDescription, array $queryParameters): array
    {
        if (!\array_key_exists($name, $queryParameters)) {
            return [];
        }

        $maxItems = $filterDescription['swagger']['maxItems'] ?? null;
        $minItems = $filterDescription['swagger']['minItems'] ?? null;
        $uniqueItems = $filterDescription['swagger']['uniqueItems'] ?? false;

        $errorList = [];

        $value = $this->getValue($name, $filterDescription, $queryParameters);
        $nbItems = \count($value);

        if (null !== $maxItems && $nbItems > $maxItems) {
            $errorList[] = sprintf('Query parameter "%s" must contain less than %d values', $name, $maxItems);
        }

        if (null !== $minItems && $nbItems < $minItems) {
            $errorList[] = sprintf('Query parameter "%s" must contain more than %d values', $name, $minItems);
        }

        if (true === $uniqueItems && $nbItems > \count(array_unique($value))) {
            $errorList[] = sprintf('Query parameter "%s" must contain unique values', $name);
        }

        return $errorList;
    }

    private function getValue(string $name, array $filterDescription, array $queryParameters): array
    {
        $value = $queryParameters[$name] ?? null;

        if (empty($value) && '0' !== $value) {
            return [];
        }

        if (\is_array($value)) {
            return $value;
        }

        $collectionFormat = $filterDescription['swagger']['collectionFormat'] ?? 'csv';

        return explode(self::getSeparator($collectionFormat), $value) ?: []; // @phpstan-ignore-line
    }

    /**
     * @return non-empty-string
     */
    private static function getSeparator(string $collectionFormat): string
    {
        switch ($collectionFormat) {
            case 'csv':
                return ',';
            case 'ssv':
                return ' ';
            case 'tsv':
                return '\t';
            case 'pipes':
                return '|';
            default:
                throw new \InvalidArgumentException(sprintf('Unknown collection format %s', $collectionFormat));
        }
    }
}

class_alias(ArrayItems::class, \ApiPlatform\Core\Filter\Validator\ArrayItems::class);

• ?? ArrayItems.php | ?? Edit | ??? Delete
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• ?? Enum.php | ?? Edit | ??? Delete
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• ?? Required.php | ?? Edit | ??? Delete
• ?? ValidatorInterface.php | ?? Edit | ??? Delete