package common

import (
	"bytes"
	"encoding/json"

	"github.com/golang/protobuf/jsonpb"
	"google.golang.org/protobuf/types/known/structpb"

	"github.com/gogo/protobuf/proto"
)

var jsonpbMarshaler *jsonpb.Marshaler

func init() {
	jsonpbMarshaler = &jsonpb.Marshaler{
		EnumsAsInts:  true,
		EmitDefaults: true,
		OrigName:     true,
	}
}

func MarshalJSON(v interface{}) []byte {
	if _, ok := v.(proto.Message); ok {
		var buf bytes.Buffer
		err := jsonpbMarshaler.Marshal(&buf, v.(proto.Message))
		if err != nil {
			return nil
		}
		return buf.Bytes()
	}
	j, _ := json.Marshal(v)
	return j
}

func NewStructValuePB(v interface{}) *structpb.Value {
	s := new(structpb.Value)
	s.UnmarshalJSON(MarshalJSON(v))
	return s
}

func NewStructValuePBByBytes(v []byte) *structpb.Value {
	s := new(structpb.Value)
	s.UnmarshalJSON(v)
	return s
}