From b7989084f228eadaccff9438a3fd4631747b6025 Mon Sep 17 00:00:00 2001
From: fiatjaf <fiatjaf@gmail.com>
Date: Fri, 2 May 2025 15:19:02 -0300
Subject: [PATCH] json marshaler/un for ids and pubkeys.

---
 keys.go  | 15 +++++++++++++++
 types.go | 16 ++++++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/keys.go b/keys.go
index d1b02a7..ffde50d 100644
--- a/keys.go
+++ b/keys.go
@@ -61,6 +61,21 @@ type PubKey [32]byte
 
 func (pk PubKey) String() string { return "pk::" + pk.Hex() }
 func (pk PubKey) Hex() string    { return hex.EncodeToString(pk[:]) }
+func (pk PubKey) MarshalJSON() ([]byte, error) {
+	res := make([]byte, 66)
+	hex.Encode(res[1:], pk[:])
+	res[0] = '"'
+	res[65] = '"'
+	return res, nil
+}
+
+func (pk *PubKey) UnmarshalJSON(buf []byte) error {
+	if len(buf) != 66 {
+		return fmt.Errorf("must be a hex string of 64 characters")
+	}
+	_, err := hex.Decode(pk[:], buf[1:])
+	return err
+}
 
 func PubKeyFromHex(pkh string) (PubKey, error) {
 	pk := PubKey{}
diff --git a/types.go b/types.go
index 928add4..23b82cd 100644
--- a/types.go
+++ b/types.go
@@ -20,6 +20,22 @@ type ID [32]byte
 func (id ID) String() string { return "id::" + id.Hex() }
 func (id ID) Hex() string    { return hex.EncodeToString(id[:]) }
 
+func (id ID) MarshalJSON() ([]byte, error) {
+	res := make([]byte, 66)
+	hex.Encode(res[1:], id[:])
+	res[0] = '"'
+	res[65] = '"'
+	return res, nil
+}
+
+func (id *ID) UnmarshalJSON(buf []byte) error {
+	if len(buf) != 66 {
+		return fmt.Errorf("must be a hex string of 64 characters")
+	}
+	_, err := hex.Decode(id[:], buf[1:])
+	return err
+}
+
 func IDFromHex(idh string) (ID, error) {
 	id := ID{}