fix: Metadata field search

Signed-off-by: Louis Chemineau <louis@chmn.me>

lib/private/Files/Cache/SearchBuilder.php

@@ -12,6 +12,7 @@ use OCP\Files\Search\ISearchBinaryOperator;
 use OCP\Files\Search\ISearchComparison;
 use OCP\Files\Search\ISearchOperator;
 use OCP\Files\Search\ISearchOrder;
+use OCP\FilesMetadata\IFilesMetadataManager;
 use OCP\FilesMetadata\IMetadataQuery;
 
 /**
@@ -80,13 +81,10 @@ class SearchBuilder {
 
 	public const TAG_FAVORITE = '_$!<Favorite>!$_';
 
-	/** @var IMimeTypeLoader */
-	private $mimetypeLoader;
-
 	public function __construct(
-		IMimeTypeLoader $mimetypeLoader,
+		private IMimeTypeLoader $mimetypeLoader,
+		private IFilesMetadataManager $filesMetadataManager,
 	) {
-		$this->mimetypeLoader = $mimetypeLoader;
 	}
 
 	/**
@@ -285,11 +283,18 @@ class SearchBuilder {
 
 
 	private function getExtraOperatorField(ISearchComparison $operator, IMetadataQuery $metadataQuery): array {
-		$paramType = self::$fieldTypes[$operator->getField()];
 		$field = $operator->getField();
 		$value = $operator->getValue();
 		$type = $operator->getType();
 
+		$knownMetadata = $this->filesMetadataManager->getKnownMetadata();
+		$isIndex = $knownMetadata->isIndex($field);
+		$paramType = $knownMetadata->getType($field) === 'int' ? 'integer' : 'string';
+
+		if (!$isIndex) {
+			throw new \InvalidArgumentException('Cannot search non indexed metadata key');
+		}
+
 		switch ($operator->getExtra()) {
 			case IMetadataQuery::EXTRA:
 				$metadataQuery->joinIndex($field); // join index table if not joined yet

tests/lib/Files/Cache/SearchBuilderTest.php

@@ -15,6 +15,7 @@ use OCP\Files\IMimeTypeLoader;
 use OCP\Files\Search\ISearchBinaryOperator;
 use OCP\Files\Search\ISearchComparison;
 use OCP\Files\Search\ISearchOperator;
+use OCP\FilesMetadata\IFilesMetadataManager;
 use Test\TestCase;
 
 /**
@@ -24,9 +25,12 @@ class SearchBuilderTest extends TestCase {
 	/** @var IQueryBuilder */
 	private $builder;
 
-	/** @var IMimeTypeLoader|\PHPUnit\Framework\MockObject\MockObject */
+	/** @var IMimeTypeLoader&\PHPUnit\Framework\MockObject\MockObject */
 	private $mimetypeLoader;
 
+	/** @var IFilesMetadataManager&\PHPUnit\Framework\MockObject\MockObject */
+	private $filesMetadataManager;
+
 	/** @var SearchBuilder */
 	private $searchBuilder;
 
@@ -37,6 +41,7 @@ class SearchBuilderTest extends TestCase {
 		parent::setUp();
 		$this->builder = \OC::$server->getDatabaseConnection()->getQueryBuilder();
 		$this->mimetypeLoader = $this->createMock(IMimeTypeLoader::class);
+		$this->filesMetadataManager = $this->createMock(IFilesMetadataManager::class);
 
 		$this->mimetypeLoader->expects($this->any())
 			->method('getId')
@@ -60,7 +65,7 @@ class SearchBuilderTest extends TestCase {
 				[6, 'image']
 			]);
 
-		$this->searchBuilder = new SearchBuilder($this->mimetypeLoader);
+		$this->searchBuilder = new SearchBuilder($this->mimetypeLoader, $this->filesMetadataManager);
 		$this->numericStorageId = 10000;
 
 		$this->builder->select(['fileid'])