add disable customer function

lib/helpers/const.dart

@@ -1,3 +0,0 @@
-const userStatusInvited = "invited";
-const userStatusJoined = "joined";
-const userStatusRequested = "requested";

lib/helpers/firebase_helper.dart

@@ -15,6 +15,14 @@ Future<String> getToken() async {
   return token.token;
 }
 
+Future<Map> getClaims({bool refreshIdToken = false}) async {
+  FirebaseUser firebaseUser = await auth.currentUser();
+  if (firebaseUser == null) return null;
+  IdTokenResult idToken =
+      await firebaseUser.getIdToken(refresh: refreshIdToken);
+  return idToken.claims;
+}
+
 Future<String> uploadStorage(String path, File file, {String fileName}) async {
   if (fileName == null) {
     fileName = Uuid().v4();