From 29d69ca2e0eabe4c9e19c37bc48a0f3788ee661f Mon Sep 17 00:00:00 2001
From: "ORZ (Paul Orzel)" <Paul.Orzel@christmann.info>
Date: Fri, 20 Jun 2025 09:39:40 +0200
Subject: [PATCH] add function to marshal aud into a string if the array has a
 len of 1, to comply with rfc

---
 pkg/oidc/types.go | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/pkg/oidc/types.go b/pkg/oidc/types.go
index 33ad2d5..5d063b1 100644
--- a/pkg/oidc/types.go
+++ b/pkg/oidc/types.go
@@ -35,6 +35,17 @@ func (a *Audience) UnmarshalJSON(text []byte) error {
 	return nil
 }
 
+func (a *Audience) MarshalJSON() ([]byte, error) {
+	len := len(*a)
+	if len > 1 {
+		return json.Marshal(*a)
+	} else if len == 1 {
+		return json.Marshal((*a)[0])
+	}
+
+	return nil, errors.New("aud is empty")
+}
+
 type Display string
 
 func (d *Display) UnmarshalText(text []byte) error {