payment forwarding

2 files changed, 24 insertions, 1 deletions

diff --git a/lib/invoices.ts b/lib/invoices.ts
index 4a9d5c89..2d9d82ad 100644
--- a/lib/invoices.ts
+++ b/lib/invoices.ts
@@ -36,6 +36,7 @@ export const generate = async ({ invoice, user }) => {
     type = PaymentType.lightning,
     webhook,
     secret,
+    forward,
   } = invoice;
 
   amount = Number.parseInt(amount || 0);
@@ -168,6 +169,7 @@ export const generate = async ({ invoice, user }) => {
     type,
     uid: user.id,
     webhook,
+    forward,
   };
 
   if (type === "liquid") {
diff --git a/lib/payments.ts b/lib/payments.ts
index 011807d5..526ae5a2 100644
--- a/lib/payments.ts
+++ b/lib/payments.ts
@@ -315,7 +315,28 @@ export const completePayment = async (inv, p, user) => {
   const { id, autowithdraw, threshold, reserve, destination, username } = user;
   let withdrawal;
   if (p.confirmed) {
-    if (autowithdraw) {
+    if (inv.forward && !inv.forwarded) {
+      try {
+        // Skip forward if destination is the same user's own invoice
+        try {
+          const destInv = await getInvoice(inv.forward);
+          if (destInv?.uid === id) {
+            inv.forwarded = true;
+            await s(`invoice:${inv.id}`, inv);
+            callWebhook(inv, p);
+            return;
+          }
+        } catch {}
+
+        inv.forwarded = true;
+        await s(`invoice:${inv.id}`, inv);
+        const w = await pay({ amount: p.amount, to: inv.forward, user });
+        callWebhook(inv, p);
+        return w;
+      } catch (e) {
+        warn(username, "forward failed", inv.forward, e.message);
+      }
+    } else if (autowithdraw && p.type !== "ark") {
       try {
         const to = destination.trim();
         const balance = await getBalance(id);