From 7ddbe68d4c6c5de34add978416cee43906266e71 Mon Sep 17 00:00:00 2001
From: Matheus Bach <35426162+matheusbach@users.noreply.github.com>
Date: Tue, 14 Mar 2023 20:29:08 -0300
Subject: [PATCH] [fix] queue.Peek() now return last block hash instead first

---
 pkg/phantom/queue.go | 23 ++++++++++++++---------
 1 file changed, 14 insertions(+), 9 deletions(-)

diff --git a/pkg/phantom/queue.go b/pkg/phantom/queue.go
index a571809..b825535 100644
--- a/pkg/phantom/queue.go
+++ b/pkg/phantom/queue.go
@@ -97,14 +97,19 @@ func (q *Queue) Pop() *chainhash.Hash {
 }
 
 func (q *Queue) Peek() *chainhash.Hash {
-	q.muxex.Lock()
-
-	defer q.muxex.Unlock()
-
-	if q.count == 0 {
-		return nil
-	}
-	return q.nodes[q.head]
+    q.muxex.Lock()
+    defer q.muxex.Unlock()
+
+    if q.count == 0 {
+        return nil
+    }
+
+    // Get the last element by accessing the element at the tail index
+    index := q.tail - 1
+    if index < 0 {
+        index = len(q.nodes) - 1
+    }
+    return q.nodes[index]
 }
 
 func (q *Queue) Len() int {
@@ -113,4 +118,4 @@ func (q *Queue) Len() int {
 	defer q.muxex.Unlock()
 
 	return q.count
-}
\ No newline at end of file
+}