package proto

import (
	"fmt"
	"github.com/golang/protobuf/proto"
)

const ProtoCoder = "proto"

type protoCoder struct{}

func NewProtoCoder() *protoCoder {
	return &protoCoder{}
}

func (*protoCoder) Marshal(v any) ([]byte, error) {
	msg, ok := v.(proto.Message)
	if !ok {
		return nil, fmt.Errorf("%T is not proto.Message", v)
	}
	return proto.Marshal(msg)
}

func (*protoCoder) Unmarshal(bs []byte, v any) error {
	msg, ok := v.(proto.Message)
	if !ok {
		return fmt.Errorf("%T is not proto.Message", v)
	}
	return proto.Unmarshal(bs, msg)
}

func (*protoCoder) Name() string {
	return ProtoCoder
}