package node

import (
	"crypto/ecdsa"

	"github.com/nspcc-dev/neofs-api-go/bootstrap"
	"github.com/nspcc-dev/neofs-api-go/hash"
	apiobj "github.com/nspcc-dev/neofs-api-go/object"
	"github.com/nspcc-dev/neofs-api-go/session"
	libacl "github.com/nspcc-dev/neofs-node/lib/acl"
	"github.com/nspcc-dev/neofs-node/lib/container"
	"github.com/nspcc-dev/neofs-node/lib/core"
	"github.com/nspcc-dev/neofs-node/lib/implementations"
	"github.com/nspcc-dev/neofs-node/lib/ir"
	"github.com/nspcc-dev/neofs-node/lib/localstore"
	"github.com/nspcc-dev/neofs-node/lib/peers"
	"github.com/nspcc-dev/neofs-node/lib/placement"
	"github.com/nspcc-dev/neofs-node/lib/transformer"
	"github.com/nspcc-dev/neofs-node/services/public/object"
	"github.com/spf13/viper"
	"go.uber.org/dig"
	"go.uber.org/zap"
)

type (
	objectManagerParams struct {
		dig.In

		Logger     *zap.Logger
		Viper      *viper.Viper
		LocalStore localstore.Localstore

		PeersInterface peers.Interface

		Peers      peers.Store
		Placement  placement.Component
		TokenStore session.PrivateTokenStore
		Options    []string `name:"node_options"`
		Key        *ecdsa.PrivateKey

		IRStorage ir.Storage

		EpochReceiver implementations.EpochReceiver

		Placer implementations.ObjectPlacer

		ExtendedACLStore libacl.ExtendedACLSource

		ContainerStorage container.Storage
	}
)

const (
	transformersSectionPath = "object.transformers."

	aclMandatorySetBits = 0x04040444
)

const xorSalitor = "xor"

func newObjectManager(p objectManagerParams) (object.Service, error) {
	var sltr object.Salitor

	if p.Viper.GetString("object.salitor") == xorSalitor {
		sltr = hash.SaltXOR
	}

	as, err := implementations.NewAddressStore(p.Peers, p.Logger)
	if err != nil {
		return nil, err
	}

	rs := object.NewRemoteService(p.PeersInterface)

	pto := p.Viper.GetDuration("object.put.timeout")
	gto := p.Viper.GetDuration("object.get.timeout")
	hto := p.Viper.GetDuration("object.head.timeout")
	sto := p.Viper.GetDuration("object.search.timeout")
	rhto := p.Viper.GetDuration("object.range_hash.timeout")
	dto := p.Viper.GetDuration("object.dial_timeout")

	tr, err := object.NewMultiTransport(object.MultiTransportParams{
		AddressStore:     as,
		EpochReceiver:    p.EpochReceiver,
		RemoteService:    rs,
		Logger:           p.Logger,
		Key:              p.Key,
		PutTimeout:       pto,
		GetTimeout:       gto,
		HeadTimeout:      hto,
		SearchTimeout:    sto,
		RangeHashTimeout: rhto,
		DialTimeout:      dto,

		PrivateTokenStore: p.TokenStore,
	})
	if err != nil {
		return nil, err
	}

	exec, err := implementations.NewContainerTraverseExecutor(tr)
	if err != nil {
		return nil, err
	}

	selectiveExec, err := implementations.NewObjectContainerHandler(implementations.ObjectContainerHandlerParams{
		NodeLister: p.Placer,
		Executor:   exec,
		Logger:     p.Logger,
	})
	if err != nil {
		return nil, err
	}

	sgInfoRecv, err := implementations.NewStorageGroupInfoReceiver(implementations.StorageGroupInfoReceiverParams{
		SelectiveContainerExecutor: selectiveExec,
		Logger:                     p.Logger,
	})
	if err != nil {
		return nil, err
	}

	verifier, err := implementations.NewLocalIntegrityVerifier(
		core.NewNeoKeyVerifier(),
	)
	if err != nil {
		return nil, err
	}

	trans, err := transformer.NewTransformer(transformer.Params{
		SGInfoReceiver: sgInfoRecv,
		EpochReceiver:  p.EpochReceiver,
		SizeLimit:      uint64(p.Viper.GetInt64(transformersSectionPath+"payload_limiter.max_payload_size") * apiobj.UnitsKB),
		Verifier:       verifier,
	})
	if err != nil {
		return nil, err
	}

	aclChecker := libacl.NewMaskedBasicACLChecker(aclMandatorySetBits, libacl.DefaultAndFilter)

	aclHelper, err := implementations.NewACLHelper(p.ContainerStorage)
	if err != nil {
		return nil, err
	}

	verifier, err = implementations.NewLocalHeadIntegrityVerifier(
		core.NewNeoKeyVerifier(),
	)
	if err != nil {
		return nil, err
	}

	return object.New(&object.Params{
		Verifier:          verifier,
		Salitor:           sltr,
		LocalStore:        p.LocalStore,
		MaxProcessingSize: p.Viper.GetUint64("object.max_processing_size") * uint64(apiobj.UnitsMB),
		StorageCapacity:   bootstrap.NodeInfo{Options: p.Options}.Capacity() * uint64(apiobj.UnitsGB),
		PoolSize:          p.Viper.GetInt("object.workers_count"),
		Placer:            p.Placer,
		Transformer:       trans,
		ObjectRestorer: transformer.NewRestorePipeline(
			transformer.SplitRestorer(),
		),
		RemoteService:        rs,
		AddressStore:         as,
		Logger:               p.Logger,
		TokenStore:           p.TokenStore,
		EpochReceiver:        p.EpochReceiver,
		ContainerNodesLister: p.Placer,
		Key:                  p.Key,
		CheckACL:             p.Viper.GetBool("object.check_acl"),
		DialTimeout:          p.Viper.GetDuration("object.dial_timeout"),
		MaxPayloadSize:       p.Viper.GetUint64("object.transformers.payload_limiter.max_payload_size") * uint64(apiobj.UnitsKB),
		PutParams: object.OperationParams{
			Timeout:   pto,
			LogErrors: p.Viper.GetBool("object.put.log_errs"),
		},
		GetParams: object.OperationParams{
			Timeout:   gto,
			LogErrors: p.Viper.GetBool("object.get.log_errs"),
		},
		HeadParams: object.OperationParams{
			Timeout:   hto,
			LogErrors: p.Viper.GetBool("object.head.log_errs"),
		},
		DeleteParams: object.OperationParams{
			Timeout:   p.Viper.GetDuration("object.delete.timeout"),
			LogErrors: p.Viper.GetBool("object.get.log_errs"),
		},
		SearchParams: object.OperationParams{
			Timeout:   sto,
			LogErrors: p.Viper.GetBool("object.search.log_errs"),
		},
		RangeParams: object.OperationParams{
			Timeout:   p.Viper.GetDuration("object.range.timeout"),
			LogErrors: p.Viper.GetBool("object.range.log_errs"),
		},
		RangeHashParams: object.OperationParams{
			Timeout:   rhto,
			LogErrors: p.Viper.GetBool("object.range_hash.log_errs"),
		},
		Assembly: p.Viper.GetBool("object.assembly"),

		WindowSize: p.Viper.GetInt("object.window_size"),

		ACLHelper:       aclHelper,
		BasicACLChecker: aclChecker,
		IRStorage:       p.IRStorage,
		ContainerLister: p.Placer,

		SGInfoReceiver: sgInfoRecv,

		OwnerKeyVerifier: core.NewNeoKeyVerifier(),

		ExtendedACLSource: p.ExtendedACLStore,
	})
}