From f77582250f5e0bcd2f4e7a51f8208406b70dc587 Mon Sep 17 00:00:00 2001
From: Mononaut <github@monospace.live>
Date: Tue, 4 Jun 2024 22:58:39 +0000
Subject: [PATCH] Pizza tracker rbf tree traversal to find mined tx

---
 .../app/components/tracker/tracker.component.ts  | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/frontend/src/app/components/tracker/tracker.component.ts b/frontend/src/app/components/tracker/tracker.component.ts
index 4c91db5cc..1685ee530 100644
--- a/frontend/src/app/components/tracker/tracker.component.ts
+++ b/frontend/src/app/components/tracker/tracker.component.ts
@@ -220,7 +220,23 @@ export class TrackerComponent implements OnInit, OnDestroy {
       this.rbfInfo = rbfResponse?.replacements;
       this.rbfReplaces = rbfResponse?.replaces || null;
       if (this.rbfInfo) {
+        // link to the latest pending version
         this.latestReplacement = this.rbfInfo.tx.txid;
+        // or traverse the rbf tree to find a confirmed version
+        if (this.rbfInfo.mined) {
+          const stack = [this.rbfInfo];
+          let found = false;
+          while (stack.length && !found) {
+            const top = stack.pop();
+            if (top?.tx.mined) {
+              found = true;
+              this.latestReplacement = top.tx.txid;
+              break;
+            } else {
+              stack.push(...top.replaces);
+            }
+          }
+        }
       }
     });