File Core/Schema/NotificationParams/CancelledNotificationParams.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\MetaObject;
18:	use Nexus\Mcp\Core\Schema\MetaObject\NotificationMetaObject;
19:	use Nexus\Mcp\Core\Schema\NotificationParams;
20:	use Nexus\Mcp\Core\Schema\RequestId;
21:
22:	/**
23:	* Parameters for a `notifications/cancelled` notification.
24:	*
25:	* @extends NotificationParams<array{
26:	* _meta?: template-type<NotificationMetaObject, MetaObject, 'T'>,
27:	* requestId: int\|non-empty-string,
28:	* reason?: non-empty-string,
29:	* }>
30:	*
31:	* @see https://modelcontextprotocol.io/specification/2026-07-28/schema#cancellednotificationparams
32:	*/
33:	final readonly class CancelledNotificationParams extends NotificationParams
34:	{
35:	/**
36:	* @param null\|non-empty-string $reason
37:	*/
38:	public function __construct(
39:	public RequestId $requestId,
40:	public ?string $reason = null,
41:	NotificationMetaObject $meta = new NotificationMetaObject(),
42:	) {
43:	Assert::that($reason)->nullOr()->isNonEmptyString('"params.reason" must be a non-empty string or null.');
44:
45:	parent::__construct(meta: $meta);
46:	}
47:
48:	#[\Override]
49:	public static function fromArray(array $data): static
50:	{
51:	Assert::that($data)->hasOffset('requestId', '"params" is missing the required "requestId" key.');
52:	Assert::that($data['requestId'])->isIntOrNonEmptyString('"params.requestId" must be an int or non-empty string, {type} given.');
53:	$requestId = new RequestId(id: $data['requestId']);
54:
55:	$reason = $data['reason'] ?? null;
56:	Assert::that($reason)->nullOr()->isNonEmptyString('"params.reason" must be a non-empty string or null, {type} given.');
57:
58:	$meta = new NotificationMetaObject();
59:
60:	if (\array_key_exists('_meta', $data)) {
61:	Assert::that($data['_meta'])
62:	->isArray('"params._meta" must be an object, {type} given.')
63:	->not()->isNonEmptyList('"params._meta" must be a string-keyed object.')
64:	;
65:	$meta = NotificationMetaObject::fromArray($data['_meta']);
66:	}
67:
68:	return new self(requestId: $requestId, reason: $reason, meta: $meta);
69:	}
70:
71:	#[\Override]
72:	public function toArray(): array
73:	{
74:	$data = [];
75:	$meta = $this->meta->toArray();
76:
77:	if ([] !== $meta) {
78:	$data['_meta'] = $meta;
79:	}
80:
81:	$data['requestId'] = $this->requestId->id;
82:
83:	if (null !== $this->reason) {
84:	$data['reason'] = $this->reason;
85:	}
86:
87:	return $data;
88:	}
89:
90:	#[\Override]
91:	public function jsonSerialize(): array
92:	{
93:	return $this->toArray();
94:	}
95:	}
96:

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