fix(firestore): set firestore client language attribution to react-native

Author: mikehardy

packages/firestore/RNFBFirestore.podspec

@@ -27,7 +27,7 @@ Pod::Spec.new do |s|
   s.ios.deployment_target = firebase_ios_target
   s.macos.deployment_target = firebase_macos_target
   s.tvos.deployment_target = firebase_tvos_target
-  s.source_files        = 'ios/**/*.{h,m}'
+  s.source_files        = 'ios/**/*.{h,m,mm}'
 
   # React Native dependencies
   s.dependency          'React-Core'

packages/firestore/android/src/main/java/io/invertase/firebase/firestore/UniversalFirebaseFirestoreCommon.java

@@ -22,6 +22,8 @@
 import com.google.firebase.firestore.FirebaseFirestore;
 import com.google.firebase.firestore.FirebaseFirestoreSettings;
 import com.google.firebase.firestore.Query;
+import com.google.firebase.firestore.remote.FirestoreChannel;
+import io.invertase.firebase.app.ReactNativeFirebaseVersion;
 import io.invertase.firebase.common.UniversalFirebasePreferences;
 import java.lang.ref.WeakReference;
 import java.util.WeakHashMap;
@@ -42,6 +44,7 @@ static FirebaseFirestore getFirestoreForApp(String appName, String databaseId) {
     }
 
     FirebaseApp firebaseApp = FirebaseApp.getInstance(appName);
+    FirestoreChannel.setClientLanguage("gl-rn/" + ReactNativeFirebaseVersion.VERSION);
 
     FirebaseFirestore instance = FirebaseFirestore.getInstance(firebaseApp, databaseId);
 

packages/firestore/ios/RNFBFirestore/RNFBFirestoreClientLanguage.mm

@@ -0,0 +1,46 @@
+/**
+ * Copyright (c) 2025-present Invertase Limited & Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this library except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#import <Foundation/Foundation.h>
+#import <string>
+
+namespace firebase {
+namespace firestore {
+namespace api {
+
+class Firestore {
+ public:
+  static void SetClientLanguage(std::string language_token);
+};
+
+}  // namespace api
+}  // namespace firestore
+}  // namespace firebase
+
+@interface RNFBFirestoreClientLanguage : NSObject
++ (void)setClientLanguage:(NSString *)language;
+@end
+
+@implementation RNFBFirestoreClientLanguage
++ (void)setClientLanguage:(NSString *)language {
+  if (language == nil) {
+    return;
+  }
+  std::string token = std::string([language UTF8String]);
+  firebase::firestore::api::Firestore::SetClientLanguage(token);
+}
+@end

packages/firestore/ios/RNFBFirestore/RNFBFirestoreCommon.m

@@ -17,6 +17,7 @@
 
 #import "RNFBFirestoreCommon.h"
 #import <RNFBApp/RNFBSharedUtils.h>
+#import <RNFBApp/RNFBVersion.h>
 #import "RNFBPreferences.h"
 
 NSString *const FIRESTORE_CACHE_SIZE = @"firebase_firestore_cache_size";
@@ -28,6 +29,10 @@
 
 NSMutableDictionary *instanceCache;
 
+@interface RNFBFirestoreClientLanguage : NSObject
++ (void)setClientLanguage:(NSString *)language;
+@end
+
 @implementation RNFBFirestoreCommon
 + (FIRFirestore *)getFirestoreForApp:(FIRApp *)app databaseId:(NSString *)databaseId {
   if (instanceCache == nil) {
@@ -43,6 +48,11 @@ + (FIRFirestore *)getFirestoreForApp:(FIRApp *)app databaseId:(NSString *)databa
 
   FIRFirestore *instance = [FIRFirestore firestoreForApp:app database:databaseId];
 
+#if TARGET_OS_IPHONE
+  [RNFBFirestoreClientLanguage
+      setClientLanguage:[NSString stringWithFormat:@"gl-rn/%@", RNFBVersionString]];
+#endif
+
   [self setFirestoreSettings:instance
                      appName:[RNFBSharedUtils getAppJavaScriptName:app.name]
                   databaseId:databaseId];

tests/ios/Podfile.lock

@@ -2303,7 +2303,7 @@ SPEC CHECKSUMS:
   RNFBAuth: 712e85c69a1f5b6d9c624eca9f92831976016a5e
   RNFBCrashlytics: 7ba5fb1d27ae0019c9c0a46a0111758d9a7d0b0f
   RNFBDatabase: 13814bc51ebf8af459d248dde4c0f0216a3bf486
-  RNFBFirestore: 6390b16301f1841ad57907f101103cbf6317f131
+  RNFBFirestore: a7c57bc634607929418b29b744be49897ae0ce1d
   RNFBFunctions: 914a518d87227e0c5b3beb91789e0a2325dfb5dd
   RNFBInAppMessaging: ca3a4590b39dd196751e3e70d938c7aa37a19409
   RNFBInstallations: c85e437fa09155df6ed4947c37f44abeead104c2