package main

import (
	"context"
	"net"

	controlconfig "github.com/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/control"
	"github.com/TrueCloudLab/frostfs-node/pkg/services/control"
	controlSvc "github.com/TrueCloudLab/frostfs-node/pkg/services/control/server"
	"github.com/TrueCloudLab/frostfs-node/pkg/services/tree"
	cid "github.com/TrueCloudLab/frostfs-sdk-go/container/id"
	"go.uber.org/zap"
	"google.golang.org/grpc"
)

type treeSynchronizer struct {
	treeSvc *tree.Service
}

func (t treeSynchronizer) Synchronize(ctx context.Context, cnr cid.ID, treeID string) error {
	return t.treeSvc.SynchronizeTree(ctx, cnr, treeID)
}

func initControlService(c *cfg) {
	endpoint := controlconfig.GRPC(c.appCfg).Endpoint()
	if endpoint == controlconfig.GRPCEndpointDefault {
		return
	}

	pubs := controlconfig.AuthorizedKeys(c.appCfg)
	rawPubs := make([][]byte, 0, len(pubs)+1) // +1 for node key

	rawPubs = append(rawPubs, c.key.PublicKey().Bytes())

	for i := range pubs {
		rawPubs = append(rawPubs, pubs[i].Bytes())
	}

	ctlSvc := controlSvc.New(
		controlSvc.WithKey(&c.key.PrivateKey),
		controlSvc.WithAuthorizedKeys(rawPubs),
		controlSvc.WithHealthChecker(c),
		controlSvc.WithNetMapSource(c.netMapSource),
		controlSvc.WithContainerSource(c.cfgObject.cnrSource),
		controlSvc.WithReplicator(c.replicator),
		controlSvc.WithNodeState(c),
		controlSvc.WithLocalStorage(c.cfgObject.cfgLocalStorage.localStorage),
		controlSvc.WithTreeService(treeSynchronizer{
			c.treeService,
		}),
	)

	lis, err := net.Listen("tcp", endpoint)
	if err != nil {
		c.log.Error("can't listen gRPC endpoint (control)", zap.Error(err))
		return
	}

	c.cfgControlService.server = grpc.NewServer()

	c.onShutdown(func() {
		stopGRPC("FrostFS Control API", c.cfgControlService.server, c.log)
	})

	control.RegisterControlServiceServer(c.cfgControlService.server, ctlSvc)

	c.workers = append(c.workers, newWorkerFromFunc(func(ctx context.Context) {
		runAndLog(c, "control", false, func(c *cfg) {
			fatalOnErr(c.cfgControlService.server.Serve(lis))
		})
	}))
}

func (c *cfg) NetmapStatus() control.NetmapStatus {
	return c.cfgNetmap.state.controlNetmapStatus()
}

func (c *cfg) setHealthStatus(st control.HealthStatus) {
	c.healthStatus.Store(int32(st))

	if c.metricsCollector != nil {
		c.metricsCollector.SetHealth(int32(st))
	}
}

func (c *cfg) HealthStatus() control.HealthStatus {
	return control.HealthStatus(c.healthStatus.Load())
}