From 0bcd3aae15bbcfd852706e50854742f6390c0745 Mon Sep 17 00:00:00 2001
From: ekzyis <ekzyis@ekzy.is>
Date: Fri, 27 Dec 2024 01:06:33 +0100
Subject: [PATCH] Fix malformed callback

---
 lnurl/lnurl.go | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/lnurl/lnurl.go b/lnurl/lnurl.go
index fdcb549..ac0cb5c 100644
--- a/lnurl/lnurl.go
+++ b/lnurl/lnurl.go
@@ -28,10 +28,16 @@ func Router(e *echo.Echo, ln lightning.Lightning) {
 
 func payRequest(c echo.Context) error {
 	name := c.Param("name")
+
+	callback, err := url.JoinPath(env.PublicUrl, "/.well-known/lnurlp/", name, "/pay")
+	if err != nil {
+		return err
+	}
+
 	return c.JSON(
 		http.StatusOK,
 		map[string]any{
-			"callback":       fmt.Sprintf("%s/.well-known/lnurlp/%s/pay", env.PublicUrl, name),
+			"callback":       callback,
 			"minSendable":    MIN_SENDABLE_AMOUNT,
 			"maxSendable":    MAX_SENDABLE_AMOUNT,
 			"metadata":       fmt.Sprintf("[[\"text/plain\",\"paying %s\"]]", name),