package apemanager

import (
	"context"
	"crypto/ecdsa"

	apemanager_v2 "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/apemanager"
	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/util"
)

type signService struct {
	sigSvc *util.SignService

	next Server
}

func NewSignService(key *ecdsa.PrivateKey, next Server) Server {
	return &signService{
		sigSvc: util.NewUnarySignService(key),
		next:   next,
	}
}

func (s *signService) AddChain(ctx context.Context, req *apemanager_v2.AddChainRequest) (*apemanager_v2.AddChainResponse, error) {
	if err := s.sigSvc.VerifyRequest(req); err != nil {
		resp := new(apemanager_v2.AddChainResponse)
		return resp, s.sigSvc.SignResponse(resp, err)
	}
	resp, err := util.EnsureNonNilResponse(s.next.AddChain(ctx, req))
	return resp, s.sigSvc.SignResponse(resp, err)
}

func (s *signService) RemoveChain(ctx context.Context, req *apemanager_v2.RemoveChainRequest) (*apemanager_v2.RemoveChainResponse, error) {
	if err := s.sigSvc.VerifyRequest(req); err != nil {
		resp := new(apemanager_v2.RemoveChainResponse)
		return resp, s.sigSvc.SignResponse(resp, err)
	}
	resp, err := util.EnsureNonNilResponse(s.next.RemoveChain(ctx, req))
	return resp, s.sigSvc.SignResponse(resp, err)
}

func (s *signService) ListChains(ctx context.Context, req *apemanager_v2.ListChainsRequest) (*apemanager_v2.ListChainsResponse, error) {
	if err := s.sigSvc.VerifyRequest(req); err != nil {
		resp := new(apemanager_v2.ListChainsResponse)
		return resp, s.sigSvc.SignResponse(resp, err)
	}
	resp, err := util.EnsureNonNilResponse(s.next.ListChains(ctx, req))
	return resp, s.sigSvc.SignResponse(resp, err)
}