From bd08f1651b1db6803e0773bdff0b35f5dd08cd90 Mon Sep 17 00:00:00 2001
From: hannahhoward <hannah@hannahhoward.net>
Date: Wed, 16 Aug 2023 09:33:31 -0700
Subject: [PATCH] feat(retrievalmarket): add json marshalling

add compatibility interfaces to CborGenCompatibleNode for encoding/json
---
 retrievalmarket/bindnodeoptions.go | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/retrievalmarket/bindnodeoptions.go b/retrievalmarket/bindnodeoptions.go
index 73c81d07..cd22c0e0 100644
--- a/retrievalmarket/bindnodeoptions.go
+++ b/retrievalmarket/bindnodeoptions.go
@@ -6,6 +6,7 @@ import (
 	"io"
 
 	"github.com/ipld/go-ipld-prime/codec/dagcbor"
+	"github.com/ipld/go-ipld-prime/codec/dagjson"
 	"github.com/ipld/go-ipld-prime/datamodel"
 	"github.com/ipld/go-ipld-prime/node/basicnode"
 	"github.com/ipld/go-ipld-prime/node/bindnode"
@@ -81,6 +82,34 @@ func (sn *CborGenCompatibleNode) MarshalCBOR(w io.Writer) error {
 	return dagcbor.Encode(node, w)
 }
 
+// MarshalJSON is for encoding/json compatibility
+func (sn *CborGenCompatibleNode) MarshalJSON() ([]byte, error) {
+	node := datamodel.Null
+	if sn != nil && sn.Node != nil {
+		node = sn.Node
+		if tn, ok := node.(schema.TypedNode); ok {
+			node = tn.Representation()
+		}
+	}
+	buf := new(bytes.Buffer)
+	err := dagjson.Encode(node, buf)
+	if err != nil {
+		return nil, err
+	}
+	return buf.Bytes(), nil
+}
+
+// UnmarshalJSON is for encoding/json compatibility
+func (sn *CborGenCompatibleNode) UnmarshalJSON(data []byte) error {
+	// convert it to a Node
+	na := basicnode.Prototype.Any.NewBuilder()
+	if err := dagcbor.Decode(na, bytes.NewReader(data)); err != nil {
+		return err
+	}
+	sn.Node = na.Build()
+	return nil
+}
+
 func cborGenCompatibleNodeFromAny(node datamodel.Node) (interface{}, error) {
 	return &CborGenCompatibleNode{Node: node}, nil
 }