package control

import (
	"context"
	"fmt"

	control "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/control/ir"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/status"
)

// HealthCheck returns health status of the local IR node.
//
// If request is not signed with a key from white list, permission error returns.
func (s *Server) HealthCheck(_ context.Context, req *control.HealthCheckRequest) (*control.HealthCheckResponse, error) {
	if err := s.isValidRequest(req); err != nil {
		return nil, status.Error(codes.PermissionDenied, err.Error())
	}

	resp := new(control.HealthCheckResponse)

	body := new(control.HealthCheckResponse_Body)
	resp.SetBody(body)

	body.SetHealthStatus(s.prm.healthChecker.HealthStatus())

	if err := SignMessage(&s.prm.key.PrivateKey, resp); err != nil {
		return nil, status.Error(codes.Internal, err.Error())
	}

	return resp, nil
}

// TickEpoch forces a new epoch.
//
// If request is not signed with a key from white list, permission error returns.
func (s *Server) TickEpoch(_ context.Context, req *control.TickEpochRequest) (*control.TickEpochResponse, error) {
	if err := s.isValidRequest(req); err != nil {
		return nil, status.Error(codes.PermissionDenied, err.Error())
	}

	resp := new(control.TickEpochResponse)
	resp.SetBody(new(control.TickEpochResponse_Body))

	epoch, err := s.netmapClient.Epoch()
	if err != nil {
		return nil, fmt.Errorf("getting current epoch: %w", err)
	}

	if err := s.netmapClient.NewEpoch(epoch+1, true); err != nil {
		return nil, fmt.Errorf("forcing new epoch: %w", err)
	}

	if err := SignMessage(&s.prm.key.PrivateKey, resp); err != nil {
		return nil, status.Error(codes.Internal, err.Error())
	}

	return resp, nil
}