Application\Api\Scalar\ChronosType

Complexity

Total Complexity

7

Size/Duplication

Total Lines	62
Duplicated Lines	0 %

Importance

Changes

0

3 Methods

Rating	Name	Duplication	Size	Complexity
A	parseLiteral()	0	9	2
A	serialize()	0	7	2
A	parseValue()	0	14	3

<?php

declare(strict_types=1);

namespace Application\Api\Scalar;

use Cake\Chronos\Chronos;
use GraphQL\Error\Error;
use GraphQL\Language\AST\Node;
use GraphQL\Language\AST\StringValueNode;
use GraphQL\Type\Definition\ScalarType;
use GraphQL\Utils\Utils;

class ChronosType extends ScalarType
{
    /**
     * @var string
     */
    public $description = 'A date with time and timezone.';

    /**
     * Serializes an internal value to include in a response.
     *
     * @param mixed $value
     *
     * @return mixed
     */
    public function serialize($value)
    {
        if ($value instanceof Chronos) {
            return $value->format('c');
        }

        return $value;
    }

    /**
     * Parses an externally provided value (query variable) to use as an input
     *
     * @param mixed $value
     *
     * @return mixed
     */
    public function parseValue($value)
    {
        if (!is_string($value)) { // quite naive, but after all this is example
            throw new \UnexpectedValueException('Cannot represent value as Chronos date: ' . Utils::printSafe($value));
        }

        if ($value === '') {
            return null;
        }

        $date = new Chronos($value);
        $date = $date->setTimezone(new \DateTimeZone(date_default_timezone_get()));

        return $date;
    }

    /**
     * Parses an externally provided literal value to use as an input (e.g. in Query AST)
     *
     * @param $ast Node
     *
     * @return null|string
     */
    public function parseLiteral($ast, array $variables = null)
    {
        // Note: throwing GraphQL\Error\Error vs \UnexpectedValueException to benefit from GraphQL
        // error location in query:
        if (!($ast instanceof StringValueNode)) {
            throw new Error('Query error: Can only parse strings got: ' . $ast->kind, [$ast]);
        }

        return $ast->value;
    }
}