package client

import (
	sessiongrpc "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/session/grpc"
)

// ResponseMetaInfo groups meta information about any FrostFS API response.
type ResponseMetaInfo struct {
	key []byte

	epoch uint64
}

type responseV2 interface {
	GetMetaHeader() *sessiongrpc.ResponseMetaHeader
	GetVerifyHeader() *sessiongrpc.ResponseVerificationHeader
}

// ResponderKey returns responder's public key in a binary format.
//
// Result must not be mutated.
func (x ResponseMetaInfo) ResponderKey() []byte {
	return x.key
}

// Epoch returns local FrostFS epoch of the server.
func (x ResponseMetaInfo) Epoch() uint64 {
	return x.epoch
}