File Core/Schema/NotificationParams/EmptyNotificationParams.php

1:	<?php
2:
3:	declare(strict_types=1);
4:
5:	/**
6:	* This file is part of the Nexus MCP SDK package.
7:	*
8:	* (c) 2026 John Paul E. Balandan, CPA <paulbalandan@gmail.com>
9:	*
10:	* For the full copyright and license information, please view
11:	* the LICENSE file that was distributed with this source code.
12:	*/
13:
14:	namespace Nexus\Mcp\Core\Schema\NotificationParams;
15:
16:	use Nexus\Assert\Assert;
17:	use Nexus\Mcp\Core\Schema\Arrayable;
18:	use Nexus\Mcp\Core\Schema\MetaObject;
19:	use Nexus\Mcp\Core\Schema\NotificationParams;
20:
21:	/**
22:	* Default notification params for methods that carry no typed fields beyond `_meta`.
23:	*
24:	* @extends NotificationParams<array{
25:	* _meta?: template-type<MetaObject, Arrayable, 'T'>,
26:	* }>
27:	*
28:	* @see https://github.com/modelcontextprotocol/modelcontextprotocol/blob/main/schema/draft/schema.ts
29:	*/
30:	final readonly class EmptyNotificationParams extends NotificationParams
31:	{
32:	#[\Override]
33:	public static function fromArray(array $data): static
34:	{
35:	$meta = new MetaObject();
36:
37:	if (\array_key_exists('_meta', $data)) {
38:	Assert::that($data['_meta'])
39:	->isArray('"params._meta" must be an object, {type} given.')
40:	->isMap('"params._meta" must be a string-keyed object.')
41:	;
42:	$meta = MetaObject::fromArray($data['_meta']);
43:	}
44:
45:	return new self(meta: $meta);
46:	}
47:
48:	#[\Override]
49:	public function toArray(): array
50:	{
51:	$meta = $this->meta->toArray();
52:
53:	return [] !== $meta ? ['_meta' => $meta] : [];
54:	}
55:	}
56: