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Current File : /home/eolienneia/www/templates/yootheme/vendor/yootheme/graphql/src/Directive/SliceDirective.php

<?php

namespace YOOtheme\GraphQL\Directive;

use YOOtheme\GraphQL\Type\Definition\Directive;
use YOOtheme\GraphQL\Type\Definition\FieldArgument;
use YOOtheme\GraphQL\Type\Definition\Type;

class SliceDirective extends Directive
{
    /**
     * Constructor.
     */
    public function __construct()
    {
        parent::__construct([
            'name' => 'slice',
            'args' => [
                new FieldArgument([
                    'name' => 'offset',
                    'type' => Type::int(),
                ]),
                new FieldArgument([
                    'name' => 'limit',
                    'type' => Type::int(),
                ]),
            ],
            'locations' => ['FIELD', 'FRAGMENT_SPREAD', 'INLINE_FRAGMENT'],
        ]);
    }

    /**
     * Directive callback.
     *
     * @param array $params
     *
     * @return \Closure
     */
    public function __invoke(array $params)
    {
        return function ($root, $args, $context, $info, callable $next) use ($params) {
            $offset = isset($params['offset']) ? $params['offset'] : 0;
            $limit = isset($params['limit']) ? $params['limit'] : null;

            $value = $next($root, $args, $context, $info);

            // TODO 2.4 no need to check for $offset && $limit ?
            if (is_array($value) && ($offset || $limit)) {
                return array_slice($value, (int) $offset, (int) $limit ?: null);
            }

            return $value;
        };
    }
}