api: Inject services into ApiSetPageLanguage

Bug: T259960
Change-Id: I528bfbaf84a46248ba69533780374aebb5cdd542

includes/api/ApiMain.php

@@ -294,7 +294,13 @@ class ApiMain extends ApiBase {
 				'MergeHistoryFactory',
 			],
 		],
-		'setpagelanguage' => ApiSetPageLanguage::class,
+		'setpagelanguage' => [
+			'class' => ApiSetPageLanguage::class,
+			'services' => [
+				'DBLoadBalancer',
+				'LanguageNameUtils',
+			]
+		],
 		'changecontentmodel' => [
 			'class' => ApiChangeContentModel::class,
 			'services' => [

includes/api/ApiSetPageLanguage.php

@@ -20,7 +20,8 @@
  * @file
  */
 
-use MediaWiki\MediaWikiServices;
+use MediaWiki\Languages\LanguageNameUtils;
+use Wikimedia\Rdbms\ILoadBalancer;
 
 /**
  * API module that facilitates changing the language of a page.
@@ -30,6 +31,30 @@ use MediaWiki\MediaWikiServices;
  * @ingroup API
  */
 class ApiSetPageLanguage extends ApiBase {
+
+	/** @var ILoadBalancer */
+	private $loadBalancer;
+
+	/** @var LanguageNameUtils */
+	private $languageNameUtils;
+
+	/**
+	 * @param ApiMain $mainModule
+	 * @param string $moduleName
+	 * @param ILoadBalancer $loadBalancer
+	 * @param LanguageNameUtils $languageNameUtils
+	 */
+	public function __construct(
+		ApiMain $mainModule,
+		$moduleName,
+		ILoadBalancer $loadBalancer,
+		LanguageNameUtils $languageNameUtils
+	) {
+		parent::__construct( $mainModule, $moduleName );
+		$this->loadBalancer = $loadBalancer;
+		$this->languageNameUtils = $languageNameUtils;
+	}
+
 	// Check if change language feature is enabled
 	protected function getExtendedDescription() {
 		if ( !$this->getConfig()->get( 'PageLanguageUseDB' ) ) {
@@ -84,7 +109,8 @@ class ApiSetPageLanguage extends ApiBase {
 			$titleObj,
 			$params['lang'],
 			$params['reason'] ?? '',
-			$params['tags'] ?: []
+			$params['tags'] ?: [],
+			$this->loadBalancer->getConnectionRef( ILoadBalancer::DB_PRIMARY )
 		);
 
 		if ( !$status->isOK() ) {
@@ -117,9 +143,7 @@ class ApiSetPageLanguage extends ApiBase {
 			'lang' => [
 				ApiBase::PARAM_TYPE => array_merge(
 					[ 'default' ],
-					array_keys( MediaWikiServices::getInstance()
-						->getLanguageNameUtils()
-						->getLanguageNames( null, 'mwfile' ) )
+					array_keys( $this->languageNameUtils->getLanguageNames( null, 'mwfile' ) )
 				),
 				ApiBase::PARAM_REQUIRED => true,
 			],