File Core/Schema/Resource/BlobResourceContents.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\Resource;
15:
16:	use Nexus\Assert\Assert;
17:	use Nexus\Mcp\Core\Schema\MetaObject;
18:	use Nexus\Mcp\Core\Schema\MetaObject\PayloadMetaObject;
19:
20:	/**
21:	* Binary resource contents, whose `blob` payload carries a base64-encoded representation of the data.
22:	*
23:	* @extends ResourceContents<array{
24:	* uri: non-empty-string,
25:	* blob: string,
26:	* mimeType?: non-empty-string,
27:	* _meta?: template-type<PayloadMetaObject, MetaObject, 'T'>,
28:	* }>
29:	*
30:	* @see https://modelcontextprotocol.io/specification/2026-07-28/schema#blobresourcecontents
31:	*/
32:	final readonly class BlobResourceContents extends ResourceContents
33:	{
34:	public function __construct(
35:	string $uri,
36:	public string $blob,
37:	?string $mimeType = null,
38:	PayloadMetaObject $meta = new PayloadMetaObject(),
39:	) {
40:	parent::__construct(uri: $uri, mimeType: $mimeType, meta: $meta);
41:	}
42:
43:	#[\Override]
44:	public static function fromArray(array $data): static
45:	{
46:	Assert::that($data)->hasOffset('uri', 'blob resource contents is missing the required "uri" key.');
47:	$uri = $data['uri'];
48:	Assert::that($uri)->isNonEmptyString('blob resource contents "uri" must be a non-empty string, {type} given.');
49:
50:	Assert::that($data)->hasOffset('blob', 'blob resource contents is missing the required "blob" key.');
51:	$blob = $data['blob'];
52:	Assert::that($blob)->isString('blob resource contents "blob" must be a string, {type} given.');
53:
54:	$mimeType = $data['mimeType'] ?? null;
55:	Assert::that($mimeType)->nullOr()->isNonEmptyString('blob resource contents "mimeType" must be a non-empty string or null, {type} given.');
56:
57:	$meta = new PayloadMetaObject();
58:
59:	if (\array_key_exists('_meta', $data)) {
60:	Assert::that($data['_meta'])
61:	->isArray('blob resource contents "_meta" must be an object, {type} given.')
62:	->not()->isNonEmptyList('blob resource contents "_meta" must be a string-keyed object.')
63:	;
64:	$meta = PayloadMetaObject::fromArray($data['_meta']);
65:	}
66:
67:	return new self(uri: $uri, blob: $blob, mimeType: $mimeType, meta: $meta);
68:	}
69:
70:	#[\Override]
71:	public function toArray(): array
72:	{
73:	$data = [
74:	'uri' => $this->uri,
75:	'blob' => $this->blob,
76:	];
77:
78:	if (null !== $this->mimeType) {
79:	$data['mimeType'] = $this->mimeType;
80:	}
81:
82:	$meta = $this->meta->toArray();
83:
84:	if ([] !== $meta) {
85:	$data['_meta'] = $meta;
86:	}
87:
88:	return $data;
89:	}
90:	}
91:

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