From 2c2b84c5451846d8be6b6cef57792d48ff9b0f4b Mon Sep 17 00:00:00 2001
From: Frederik Gartenmeister <mustermeiszer@posteo.de>
Date: Wed, 11 Sep 2024 10:22:21 +0200
Subject: [PATCH] safeguard

---
 pallets/token-mux/src/lib.rs | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/pallets/token-mux/src/lib.rs b/pallets/token-mux/src/lib.rs
index 15f33bdc63..20f6308286 100644
--- a/pallets/token-mux/src/lib.rs
+++ b/pallets/token-mux/src/lib.rs
@@ -282,18 +282,22 @@ pub mod pallet {
 		}
 
 		pub(crate) fn prepare_and(
-			currency_a: &T::CurrencyId,
-			currency_b: &T::CurrencyId,
+			currency_from: &T::CurrencyId,
+			currency_to: &T::CurrencyId,
 			amount: T::Balance,
 			and: FnOnce(T::Balance) -> DispatchResult,
 		) -> DispatchResult {
-			if currency_a.is_local_representation_of(&currency_b) {
-				and(Self::adjust_amount(currency_a, currency_b, amount)?)?;
+			match (
+				currency_a.is_local_representation_of(&currency_b),
+				currency_b.is_local_representation_of(&currency_a),
+			) {
+				(true, false) => {
+					mint()
+					and(amount)
+				},
+				(false, true) => and(Self::adjust_amount(currency_a, currency_b, amount)?)?,
+				(_, _) => Err(Error::<T>::NoLocalRepresentation.into()),
 			}
-
-			if currency_b.is_local_representation_of(&currency_a) {}
-
-			Err(Error::<T>::NoLocalRepresentation.into())
 		}
 	}
 }