feat(query): add wrapper query

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: Spamercz

doc/02-query-objects.md

@@ -572,6 +572,16 @@ new \Spameri\ElasticQuery\Query\Percolate(
 );
 ```
 
+##### Wrapper Query
+Embed a raw JSON query string (auto-base64-encoded) — escape hatch for unsupported syntax.
+- Class: `\Spameri\ElasticQuery\Query\Wrapper`
+- [Documentation](https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-wrapper-query.html)
+- [Implementation](https://github.com/Spameri/ElasticQuery/blob/master/src/Query/Wrapper.php)
+
+```php
+new \Spameri\ElasticQuery\Query\Wrapper('{"term":{"user":{"value":"kimchy"}}}');
+```
+
 ##### Script Query
 Filter documents with a Painless boolean script.
 - Class: `\Spameri\ElasticQuery\Query\Script`

src/Query/Wrapper.php

@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types = 1);
+
+namespace Spameri\ElasticQuery\Query;
+
+/**
+ * @see https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-wrapper-query.html
+ */
+class Wrapper implements \Spameri\ElasticQuery\Query\LeafQueryInterface
+{
+
+	private string $encoded;
+
+
+	public function __construct(string $rawJsonQuery)
+	{
+		$this->encoded = \base64_encode($rawJsonQuery);
+	}
+
+
+	public function key(): string
+	{
+		return 'wrapper_' . \substr($this->encoded, 0, 12);
+	}
+
+
+	/**
+	 * @return array<string, array<string, string>>
+	 */
+	public function toArray(): array
+	{
+		return [
+			'wrapper' => [
+				'query' => $this->encoded,
+			],
+		];
+	}
+
+}

tests/SpameriTests/ElasticQuery/Query/Wrapper.phpt

@@ -0,0 +1,58 @@
+<?php declare(strict_types = 1);
+
+namespace SpameriTests\ElasticQuery\Query;
+
+require_once __DIR__ . '/../../bootstrap.php';
+
+
+class Wrapper extends \Tester\TestCase
+{
+
+	private const INDEX = 'spameri_test_query_wrapper';
+
+
+	public function setUp(): void
+	{
+		$ch = \curl_init();
+		\curl_setopt($ch, \CURLOPT_URL, \ELASTICSEARCH_HOST . '/' . self::INDEX);
+		\curl_setopt($ch, \CURLOPT_RETURNTRANSFER, 1);
+		\curl_setopt($ch, \CURLOPT_CUSTOMREQUEST, 'PUT');
+		\curl_setopt($ch, \CURLOPT_HTTPHEADER, ['Content-Type: application/json']);
+
+		\curl_exec($ch);
+	}
+
+
+	public function testToArray(): void
+	{
+		$raw = '{"term":{"user":{"value":"kimchy"}}}';
+		$wrapper = new \Spameri\ElasticQuery\Query\Wrapper($raw);
+
+		$array = $wrapper->toArray();
+
+		\Tester\Assert::same(\base64_encode($raw), $array['wrapper']['query']);
+	}
+
+
+	public function testKey(): void
+	{
+		$wrapper = new \Spameri\ElasticQuery\Query\Wrapper('{}');
+
+		\Tester\Assert::contains('wrapper_', $wrapper->key());
+	}
+
+
+	public function tearDown(): void
+	{
+		$ch = \curl_init();
+		\curl_setopt($ch, \CURLOPT_URL, \ELASTICSEARCH_HOST . '/' . self::INDEX);
+		\curl_setopt($ch, \CURLOPT_RETURNTRANSFER, 1);
+		\curl_setopt($ch, \CURLOPT_CUSTOMREQUEST, 'DELETE');
+		\curl_setopt($ch, \CURLOPT_HTTPHEADER, ['Content-Type: application/json']);
+
+		\curl_exec($ch);
+	}
+
+}
+
+(new Wrapper())->run();