From c736a6bb5144626eee4a20151900d9da9525ae97 Mon Sep 17 00:00:00 2001
From: Elliot Hesp <elliot.hesp@gmail.com>
Date: Thu, 30 Nov 2017 12:08:12 +0000
Subject: [PATCH] [auth][ios] Add app language constants

---
 ios/RNFirebase/auth/RNFirebaseAuth.m | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/ios/RNFirebase/auth/RNFirebaseAuth.m b/ios/RNFirebase/auth/RNFirebaseAuth.m
index 7668fd0f..de68bed2 100644
--- a/ios/RNFirebase/auth/RNFirebaseAuth.m
+++ b/ios/RNFirebase/auth/RNFirebaseAuth.m
@@ -1166,6 +1166,25 @@ RCT_EXPORT_METHOD(useDeviceLanguage:
     return output;
 }
 
+/**
+ * React native constant exports - exports native firebase apps mainly
+ * @return NSDictionary
+ */
+- (NSDictionary *)constantsToExport {
+    NSMutableDictionary *constants = [NSMutableDictionary new];
+    NSDictionary *firApps = [FIRApp allApps];
+    NSMutableDictionary *appLanguage = [NSMutableDictionary new];
+
+    for (id key in firApps) {
+        FIRApp *firApp = firApps[key];
+
+        appLanguage[firApp.name] = [FIRAuth authWithApp:firApp].languageCode;
+    }
+
+    constants[@"APP_LANGUAGE"] = appLanguage;
+    return constants;
+}
+
 /**
  Converts a FIRUser instance into a dictionary to send via RNBridge