use redis to store rates

1 files changed, 24 insertions, 7 deletions

diff --git a/lib/ecash.js b/lib/ecash.js
index df7759bf..8741cff1 100644
--- a/lib/ecash.js
+++ b/lib/ecash.js
@@ -7,8 +7,11 @@ import {
   MintQuoteState,
 } from "@cashu/cashu-ts";
 import { g, s } from "$lib/db";
+import ln from "$lib/ln";
+import { fail } from "$lib/utils";
 
-let wallet = new CashuWallet(new CashuMint(config.mintUrl));
+let m = new CashuMint(config.mintUrl);
+let w = new CashuWallet(m);
 
 let enc = (proofs) =>
   getEncodedToken({
@@ -17,9 +20,21 @@ let enc = (proofs) =>
 
 let dec = (token) => getDecodedToken(token).token[0];
 
+let ext = async (mint) => {
+  let issuer = new CashuMint(mint);
+  let { pubkey: issuerPk } = await issuer.getInfo();
+  let { pubkey: ourPk } = await m.getInfo();
+  console.log(issuerPk, ourPk);
+  return issuerPk !== ourPk;
+};
+
 export async function claim(token) {
   let { proofs: current } = dec(await g(`cash`));
-  let rcvd = await wallet.receive(token);
+  let { mint } = dec(token);
+
+  if (await ext(mint)) fail("Unable to receive from other mints");
+
+  let rcvd = await w.receive(token);
 
   await s(`cash`, enc([...current, ...rcvd]));
   return rcvd.reduce((a, b) => a + b.amount, 0);
@@ -27,18 +42,20 @@ export async function claim(token) {
 
 export async function mint(amount) {
   let { proofs } = dec(await g(`cash`));
-  let { send, returnChange } = await wallet.send(amount, proofs);
-  let rcvd = await wallet.receive(enc(send));
+  let { send, returnChange } = await w.send(amount, proofs);
+  let rcvd = await w.receive(enc(send));
   await s(`cash`, enc(returnChange));
   return enc(rcvd);
 }
 
 export async function check(token) {
-  let { proofs } = dec(token);
+  let { mint, proofs } = dec(token);
   let total = proofs.reduce((a, b) => a + b.amount, 0);
 
-  let r = await wallet.checkProofsSpent(proofs);
+  let external = await ext(mint);
+
+  let r = await w.checkProofsSpent(proofs);
   let spent = r.reduce((a, b) => a + b.amount, 0);
 
-  return { total, spent };
+  return { total, spent, mint, external };
 }