File Core/Schema/Result/ListRootsResult.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\Result;
15:
16:	use Nexus\Assert\Assert;
17:	use Nexus\Mcp\Core\Schema\MetaObject;
18:	use Nexus\Mcp\Core\Schema\Result;
19:	use Nexus\Mcp\Core\Schema\Root;
20:
21:	/**
22:	* The client's response to a roots/list request from the server.
23:	* This result contains an array of Root objects, each representing a root directory or file
24:	* that the server can operate on.
25:	*
26:	* @see https://modelcontextprotocol.io/specification/2025-11-25/schema#listrootsresult
27:	*/
28:	final readonly class ListRootsResult extends Result implements ClientResult
29:	{
30:	/**
31:	* @var list<Root>
32:	*/
33:	public array $roots;
34:
35:	/**
36:	* @param list<Root> $roots
37:	*/
38:	public function __construct(array $roots, MetaObject $meta = new MetaObject())
39:	{
40:	Assert::that($roots)
41:	->isList('"result.roots" must be a list, non-list array given.')
42:	->values()->isInstanceOf(Root::class)
43:	;
44:
45:	$this->roots = $roots;
46:
47:	parent::__construct($meta);
48:	}
49:
50:	#[\Override]
51:	public static function fromArray(array $data): static
52:	{
53:	Assert::that($data)->hasOffset('roots', '"result" missing the required "roots" key.');
54:	Assert::that($data['roots'])
55:	->isList('"result.roots" must be a list, {type} given.')
56:	->values()
57:	->isArray('each "result.root" must be an object, {type} given.')
58:	->isMap('each "result.root" must be a string-keyed object.')
59:	;
60:	$roots = array_map(Root::fromArray(...), $data['roots']);
61:
62:	$meta = new MetaObject();
63:
64:	if (\array_key_exists('_meta', $data)) {
65:	Assert::that($data['_meta'])
66:	->isArray('"result._meta" must be an object, {type} given.')
67:	->isMap('"result._meta" must be a string-keyed object.')
68:	;
69:	$meta = MetaObject::fromArray($data['_meta']);
70:	}
71:
72:	return new self($roots, $meta);
73:	}
74:
75:	#[\Override]
76:	public function toArray(): array
77:	{
78:	return [
79:	...parent::toArray(),
80:	'roots' => array_map(static fn(Root $root): array => $root->toArray(), $this->roots),
81:	];
82:	}
83:
84:	#[\Override]
85:	public function jsonSerialize(): array
86:	{
87:	return $this->toArray();
88:	}
89:	}
90:

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