File Core/Schema/RequestParams/PaginatedRequestParams.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\RequestParams;
15:
16:	use Nexus\Assert\Assert;
17:	use Nexus\Mcp\Core\Schema\Arrayable;
18:	use Nexus\Mcp\Core\Schema\Cursor;
19:	use Nexus\Mcp\Core\Schema\RequestMetaObject;
20:	use Nexus\Mcp\Core\Schema\RequestParams;
21:
22:	/**
23:	* Common params for paginated requests.
24:	*
25:	* @extends RequestParams<array{
26:	* _meta: template-type<RequestMetaObject, Arrayable, 'T'>,
27:	* cursor?: non-empty-string,
28:	* }>
29:	*
30:	* @see https://modelcontextprotocol.io/specification/draft/schema#paginatedrequestparams
31:	*/
32:	final readonly class PaginatedRequestParams extends RequestParams
33:	{
34:	public function __construct(RequestMetaObject $meta, public ?Cursor $cursor = null)
35:	{
36:	parent::__construct(meta: $meta);
37:	}
38:
39:	#[\Override]
40:	public static function fromArray(array $data): static
41:	{
42:	$cursor = null;
43:
44:	if (\array_key_exists('cursor', $data)) {
45:	$raw = $data['cursor'];
46:	Assert::that($raw)->isString('"params.cursor" must be a string, {type} given.');
47:	$cursor = new Cursor(cursor: $raw);
48:	}
49:
50:	Assert::that($data)->hasOffset('_meta', '"params" is missing the required "_meta" key.');
51:	Assert::that($data['_meta'])
52:	->isArray('"params._meta" must be an object, {type} given.')
53:	->isMap('"params._meta" must be a string-keyed object.')
54:	;
55:	$meta = RequestMetaObject::fromArray($data['_meta']);
56:
57:	return new self(meta: $meta, cursor: $cursor);
58:	}
59:
60:	#[\Override]
61:	public function toArray(): array
62:	{
63:	$data = ['_meta' => $this->meta->toArray()];
64:
65:	if (null !== $this->cursor) {
66:	$data['cursor'] = $this->cursor->cursor;
67:	}
68:
69:	return $data;
70:	}
71:	}
72:

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