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<?php
namespace YOOtheme\GraphQL\Directive;
use YOOtheme\Container;
use YOOtheme\GraphQL\Type\Definition\Directive;
use YOOtheme\GraphQL\Type\Definition\FieldArgument;
use YOOtheme\GraphQL\Type\Definition\Type;
use YOOtheme\GraphQL\Utils\Middleware;
class CallDirective extends Directive
{
/**
* @var Container
*/
protected $container;
/**
* Constructor.
*
* @param Container $container
*/
public function __construct(Container $container)
{
parent::__construct([
'name' => 'call',
'args' => [
new FieldArgument([
'name' => 'func',
'type' => Type::string(),
]),
new FieldArgument([
'name' => 'args',
'type' => Type::string(),
]),
],
'locations' => ['ENUM_VALUE', 'FIELD_DEFINITION'],
]);
$this->container = $container;
}
/**
* Resolve value from function callback.
*
* @param array $params
* @param Middleware $resolver
*
* @return \Closure|void
*/
public function __invoke(array $params, Middleware $resolver)
{
// override default resolver
$resolver->setHandler($this->container->callback($params['func']));
// merge additional arguments
if (isset($params['args']) && is_array($arguments = json_decode($params['args'], true))) {
return function ($value, $args, $context, $info, $next) use ($arguments) {
return $next($value, $args + $arguments, $context, $info);
};
}
}
}