From 83dad3c75d5e11d0bfa5031a25c673d283931a61 Mon Sep 17 00:00:00 2001
From: thesimplekid <tsk@thesimplekid.com>
Date: Sat, 14 Sep 2024 11:34:29 +0100
Subject: [PATCH] fix: melt inputs outputs check

---
 crates/cdk/src/mint/mod.rs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/crates/cdk/src/mint/mod.rs b/crates/cdk/src/mint/mod.rs
index a7400dd6..e508a3aa 100644
--- a/crates/cdk/src/mint/mod.rs
+++ b/crates/cdk/src/mint/mod.rs
@@ -1043,7 +1043,9 @@ impl Mint {
 
         let required_total = quote.amount + quote.fee_reserve + fee;
 
-        if proofs_total != required_total {
+        // Check that the inputs proofs are greater then total.
+        // Transaction does not need to be balanced as wallet may not want change.
+        if proofs_total <= required_total {
             tracing::info!(
                 "Swap request unbalanced: {}, outputs {}, fee {}",
                 proofs_total,
@@ -1053,7 +1055,7 @@ impl Mint {
             return Err(Error::TransactionUnbalanced(
                 proofs_total.into(),
                 quote.amount.into(),
-                fee.into(),
+                (fee + quote.fee_reserve).into(),
             ));
         }