Extended RediSearch support by implementing FT.INFO command (#1148)

* add support for CF.ADDNX

* fix key name

* fix wrong command

* Pulling changes

* Added support for FT.CREATE command

* Fixed tests to choose correct DB

* Added test coverage

* Revert changes for missing commands

* Added data types enums, added methods default assignments

* Added support for FT.INFO command

* Codestyle fixes

* Fixed vector field, removed default assignments, fixed tests

* Added constants enum for Sortable argument, renamed arguments object

* Codestyle fixes

* Rename test class

---------

Co-authored-by: shacharPash <shachar.pashchur@redis.com>
Co-authored-by: Vladyslav Vildanov <vladyslavvildanov@Vladyslav-Vildanov-MacBook-Pro.local>

src/ClientContextInterface.php

@@ -88,6 +88,7 @@ use Predis\Command\Redis\Container\FUNCTIONS;
  * @method $this failover(?To $to = null, bool $abort = false, int $timeout = -1)
  * @method $this fcall(string $function, array $keys, ...$args)
  * @method $this ftcreate(string $index, Schema $schema, ?CreateArguments $arguments = null)
+ * @method $this ftinfo(string $index)
  * @method $this ftsearch(string $index, string $query, ?SearchArguments $arguments = null)
  * @method $this get($key)
  * @method $this getbit($key, $offset)

src/ClientInterface.php

@@ -97,6 +97,7 @@ use Predis\Response\Status;
  * @method Status            failover(?To $to = null, bool $abort = false, int $timeout = -1)
  * @method mixed             fcall(string $function, array $keys, ...$args)
  * @method Status            ftcreate(string $index, Schema $schema, ?CreateArguments $arguments = null)
+ * @method array             ftinfo(string $index)
  * @method array             ftsearch(string $index, string $query, ?SearchArguments $arguments = null)
  * @method string|null       get(string $key)
  * @method int               getbit(string $key, $offset)

src/Command/Redis/Search/FTINFO.php

@@ -0,0 +1,28 @@
+<?php
+
+/*
+ * This file is part of the Predis package.
+ *
+ * (c) 2009-2020 Daniele Alessandri
+ * (c) 2021-2023 Till Krüss
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Predis\Command\Redis\Search;
+
+use Predis\Command\Command as RedisCommand;
+
+/**
+ * @see https://redis.io/commands/ft.info/
+ *
+ * Return information and statistics on the index.
+ */
+class FTINFO extends RedisCommand
+{
+    public function getId()
+    {
+        return 'FT.INFO';
+    }
+}

tests/Predis/Command/Redis/Search/FTINFO_Test.php

@@ -0,0 +1,97 @@
+<?php
+
+/*
+ * This file is part of the Predis package.
+ *
+ * (c) 2009-2020 Daniele Alessandri
+ * (c) 2021-2023 Till Krüss
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Predis\Command\Redis\Search;
+
+use Predis\Command\Argument\Search\CreateArguments;
+use Predis\Command\Argument\Search\Schema;
+use Predis\Command\Redis\PredisCommandTestCase;
+use Predis\Response\ServerException;
+
+class FTINFO_Test extends PredisCommandTestCase
+{
+    /**
+     * {@inheritDoc}
+     */
+    protected function getExpectedCommand(): string
+    {
+        return FTINFO::class;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    protected function getExpectedId(): string
+    {
+        return 'FTINFO';
+    }
+
+    /**
+     * @group disconnected
+     */
+    public function testFilterArguments(): void
+    {
+        $actualArguments = ['index'];
+        $expectedArguments = ['index'];
+
+        $command = $this->getCommand();
+        $command->setArguments($actualArguments);
+
+        $this->assertSameValues($expectedArguments, $command->getArguments());
+    }
+
+    /**
+     * @group disconnected
+     */
+    public function testParseResponse(): void
+    {
+        $this->assertSame(1, $this->getCommand()->parseResponse(1));
+    }
+
+    /**
+     * @group connected
+     * @return void
+     * @requiresRediSearchVersion >= 1.0.0
+     */
+    public function testInfoReturnsInformationAboutGivenIndex(): void
+    {
+        $redis = $this->getClient();
+
+        $arguments = new CreateArguments();
+        $arguments->prefix(['prefix:']);
+        $arguments->language('english');
+
+        $schema = new Schema();
+        $schema->addTextField('text_field');
+
+        $createResponse = $redis->ftcreate('index', $schema, $arguments);
+        $this->assertEquals('OK', $createResponse);
+
+        $actualResponse = $redis->ftinfo('index');
+        $this->assertEquals('index', $actualResponse[1]);
+    }
+
+    /**
+     * @group connected
+     * @return void
+     * @requiresRediSearchVersion >= 1.0.0
+     */
+    public function testThrowsExceptionOnNonExistingIndex(): void
+    {
+        $redis = $this->getClient();
+
+        $this->expectException(ServerException::class);
+        $this->expectExceptionMessage('Unknown Index name');
+
+        $redis->ftinfo('index');
+    }
+}