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\Arrayable;
18:	use Nexus\Mcp\Core\Schema\MetaObject;
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<MetaObject, Arrayable, 'T'>,
27:	* requestId: int\|non-empty-string,
28:	* reason?: non-empty-string,
29:	* }>
30:	*
31:	* @see https://modelcontextprotocol.io/specification/draft/schema#cancellednotificationparams
32:	*/
33:	final readonly class CancelledNotificationParams extends NotificationParams
34:	{
35:	/**
36:	* @var null\|non-empty-string
37:	*/
38:	public ?string $reason;
39:
40:	public function __construct(
41:	public RequestId $requestId,
42:	?string $reason = null,
43:	MetaObject $meta = new MetaObject(),
44:	) {
45:	Assert::that($reason)->nullOr()->isNonEmptyString('"params.reason" must be a non-empty string or null.');
46:
47:	$this->reason = $reason;
48:
49:	parent::__construct(meta: $meta);
50:	}
51:
52:	#[\Override]
53:	public static function fromArray(array $data): static
54:	{
55:	Assert::that($data)->hasOffset('requestId', '"params" is missing the required "requestId" key.');
56:	Assert::that($data['requestId'])->isArrayKey('"params.requestId" must be an int or string, {type} given.');
57:	$requestId = new RequestId(id: $data['requestId']);
58:
59:	$reason = $data['reason'] ?? null;
60:	Assert::that($reason)->nullOr()->isString('"params.reason" must be a string or null, {type} given.');
61:
62:	$meta = new MetaObject();
63:
64:	if (\array_key_exists('_meta', $data)) {
65:	Assert::that($data['_meta'])
66:	->isArray('"params._meta" must be an object, {type} given.')
67:	->isMap('"params._meta" must be a string-keyed object.')
68:	;
69:	$meta = MetaObject::fromArray($data['_meta']);
70:	}
71:
72:	return new self(requestId: $requestId, reason: $reason, meta: $meta);
73:	}
74:
75:	#[\Override]
76:	public function toArray(): array
77:	{
78:	$data = [];
79:	$meta = $this->meta->toArray();
80:
81:	if ([] !== $meta) {
82:	$data['_meta'] = $meta;
83:	}
84:
85:	$data['requestId'] = $this->requestId->id;
86:
87:	if (null !== $this->reason) {
88:	$data['reason'] = $this->reason;
89:	}
90:
91:	return $data;
92:	}
93:
94:	#[\Override]
95:	public function jsonSerialize(): array
96:	{
97:	return $this->toArray();
98:	}
99:	}
100:

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