show spent ecash

1 files changed, 10 insertions, 0 deletions

diff --git a/lib/ecash.js b/lib/ecash.js
index 0e4a3c1a..df7759bf 100644
--- a/lib/ecash.js
+++ b/lib/ecash.js
@@ -32,3 +32,13 @@ export async function mint(amount) {
   await s(`cash`, enc(returnChange));
   return enc(rcvd);
 }
+
+export async function check(token) {
+  let { proofs } = dec(token);
+  let total = proofs.reduce((a, b) => a + b.amount, 0);
+
+  let r = await wallet.checkProofsSpent(proofs);
+  let spent = r.reduce((a, b) => a + b.amount, 0);
+
+  return { total, spent };
+}