package builtin

import (
	"fmt"

	"github.com/filecoin-project/go-address"
	"github.com/ipfs/go-cid"
	"golang.org/x/xerrors"

{{range .versions}}
	    builtin{{.}} "github.com/filecoin-project/specs-actors{{import .}}actors/builtin"
{{end}}

	"github.com/filecoin-project/go-state-types/abi"
	"github.com/filecoin-project/go-state-types/proof"
    "github.com/filecoin-project/go-state-types/builtin"

	"github.com/filecoin-project/lotus/chain/actors"

	miner{{.latestVersion}} "github.com/filecoin-project/go-state-types/builtin/v8/miner"
	smoothingtypes "github.com/filecoin-project/go-state-types/builtin/v8/util/smoothing"
)

var SystemActorAddr = builtin.SystemActorAddr
var BurntFundsActorAddr = builtin.BurntFundsActorAddr
var CronActorAddr = builtin.CronActorAddr
var SaftAddress = makeAddress("t0122")
var ReserveAddress = makeAddress("t090")
var RootVerifierAddress = makeAddress("t080")

var (
	ExpectedLeadersPerEpoch = builtin.ExpectedLeadersPerEpoch
)

const (
	EpochDurationSeconds = builtin.EpochDurationSeconds
	EpochsInDay          = builtin.EpochsInDay
	SecondsInDay         = builtin.SecondsInDay
)

const (
	MethodSend        = builtin.MethodSend
	MethodConstructor = builtin.MethodConstructor
)

// These are all just type aliases across actor versions. In the future, that might change
// and we might need to do something fancier.
type SectorInfo = proof.SectorInfo
type ExtendedSectorInfo = proof.ExtendedSectorInfo
type PoStProof = proof.PoStProof
type FilterEstimate = smoothingtypes.FilterEstimate

func QAPowerForWeight(size abi.SectorSize, duration abi.ChainEpoch, dealWeight, verifiedWeight abi.DealWeight) abi.StoragePower {
	return miner{{.latestVersion}}.QAPowerForWeight(size, duration, dealWeight, verifiedWeight)
}

func ActorNameByCode(c cid.Cid) string {
	if name, version, ok := actors.GetActorMetaByCode(c); ok {
		return fmt.Sprintf("fil/%d/%s", version, name)
	}

	switch {
	    {{range .versions}}
            case builtin{{.}}.IsBuiltinActor(c):
            return builtin{{.}}.ActorNameByCode(c)
        {{end}}
	default:
		return "<unknown>"
	}
}

func IsBuiltinActor(c cid.Cid) bool {
	_, _, ok := actors.GetActorMetaByCode(c)
    if ok {
    	return true
	}

	{{range .versions}}
	    {{if (le . 7)}}
            if builtin{{.}}.IsBuiltinActor(c) {
                return true
            }
	    {{end}}
	{{end}}
	return false
}

func GetAccountActorCodeID(av actors.Version) (cid.Cid, error) {
	if c, ok := actors.GetActorCodeID(av, actors.AccountKey); ok {
		return c, nil
	}

	switch av {
        {{range .versions}}
            {{if (le . 7)}}
            case actors.Version{{.}}:
                return builtin{{.}}.AccountActorCodeID, nil
            {{end}}
        {{end}}
	}

	return cid.Undef, xerrors.Errorf("unknown actor version %d", av)
}

func IsAccountActor(c cid.Cid) bool {
	name, _, ok := actors.GetActorMetaByCode(c)
    if ok {
    	return name == "account"
	}

	{{range .versions}}
        {{if (le . 7)}}
            if c == builtin{{.}}.AccountActorCodeID {
                return true
            }
        {{end}}
	{{end}}
	return false
}

func GetCronActorCodeID(av actors.Version) (cid.Cid, error) {
	if c, ok := actors.GetActorCodeID(av, actors.CronKey); ok {
		return c, nil
	}

	switch av {
        {{range .versions}}
            {{if (le . 7)}}
            case actors.Version{{.}}:
                return builtin{{.}}.CronActorCodeID, nil
            {{end}}
        {{end}}
	}

	return cid.Undef, xerrors.Errorf("unknown actor version %d", av)
}

func GetInitActorCodeID(av actors.Version) (cid.Cid, error) {
	if c, ok := actors.GetActorCodeID(av, actors.InitKey); ok {
		return c, nil
	}

	switch av {
        {{range .versions}}
            {{if (le . 7)}}
            case actors.Version{{.}}:
                return builtin{{.}}.InitActorCodeID, nil
            {{end}}
        {{end}}
	}

	return cid.Undef, xerrors.Errorf("unknown actor version %d", av)
}

func GetMarketActorCodeID(av actors.Version) (cid.Cid, error) {
	if c, ok := actors.GetActorCodeID(av, actors.MarketKey); ok {
		return c, nil
	}

	switch av {
        {{range .versions}}
            {{if (le . 7)}}
            case actors.Version{{.}}:
                return builtin{{.}}.StorageMarketActorCodeID, nil
            {{end}}
        {{end}}
	}

	return cid.Undef, xerrors.Errorf("unknown actor version %d", av)
}

func GetMinerActorCodeID(av actors.Version) (cid.Cid, error) {
	if c, ok := actors.GetActorCodeID(av, actors.MinerKey); ok {
		return c, nil
	}

	switch av {
        {{range .versions}}
            {{if (le . 7)}}
            case actors.Version{{.}}:
                return builtin{{.}}.StorageMinerActorCodeID, nil
            {{end}}
        {{end}}
	}

	return cid.Undef, xerrors.Errorf("unknown actor version %d", av)
}

func IsStorageMinerActor(c cid.Cid) bool {
	name, _, ok := actors.GetActorMetaByCode(c)
    if ok {
    	return name == actors.MinerKey
	}

	{{range .versions}}
        {{if (le . 7)}}
            if c == builtin{{.}}.StorageMinerActorCodeID {
                return true
            }
        {{end}}
	{{end}}
	return false
}

func GetMultisigActorCodeID(av actors.Version) (cid.Cid, error) {
	if c, ok := actors.GetActorCodeID(av, actors.MultisigKey); ok {
		return c, nil
	}

	switch av {
        {{range .versions}}
            {{if (le . 7)}}
            case actors.Version{{.}}:
                return builtin{{.}}.MultisigActorCodeID, nil
            {{end}}
        {{end}}
	}

	return cid.Undef, xerrors.Errorf("unknown actor version %d", av)
}

func IsMultisigActor(c cid.Cid) bool {
	name, _, ok := actors.GetActorMetaByCode(c)
    if ok {
    	return name == actors.MultisigKey
	}

	{{range .versions}}
        {{if (le . 7)}}
            if c == builtin{{.}}.MultisigActorCodeID {
                return true
            }
        {{end}}
	{{end}}
	return false
}

func GetPaymentChannelActorCodeID(av actors.Version) (cid.Cid, error) {
	if c, ok := actors.GetActorCodeID(av, actors.PaychKey); ok {
		return c, nil
	}

	switch av {
        {{range .versions}}
            {{if (le . 7)}}
            case actors.Version{{.}}:
                return builtin{{.}}.PaymentChannelActorCodeID, nil
            {{end}}
        {{end}}
	}

	return cid.Undef, xerrors.Errorf("unknown actor version %d", av)
}

func IsPaymentChannelActor(c cid.Cid) bool {
	name, _, ok := actors.GetActorMetaByCode(c)
    if ok {
    	return name == "paymentchannel"
	}

	{{range .versions}}
        {{if (le . 7)}}
            if c == builtin{{.}}.PaymentChannelActorCodeID {
                return true
            }
        {{end}}
	{{end}}
	return false
}

func GetPowerActorCodeID(av actors.Version) (cid.Cid, error) {
	if c, ok := actors.GetActorCodeID(av, actors.PowerKey); ok {
		return c, nil
	}

	switch av {
        {{range .versions}}
            {{if (le . 7)}}
            case actors.Version{{.}}:
                return builtin{{.}}.StoragePowerActorCodeID, nil
            {{end}}
        {{end}}
	}

	return cid.Undef, xerrors.Errorf("unknown actor version %d", av)
}

func GetRewardActorCodeID(av actors.Version) (cid.Cid, error) {
	if c, ok := actors.GetActorCodeID(av, actors.RewardKey); ok {
		return c, nil
	}

	switch av {
        {{range .versions}}
            {{if (le . 7)}}
            case actors.Version{{.}}:
                return builtin{{.}}.RewardActorCodeID, nil
            {{end}}
        {{end}}
	}

	return cid.Undef, xerrors.Errorf("unknown actor version %d", av)
}

func GetSystemActorCodeID(av actors.Version) (cid.Cid, error) {
	if c, ok := actors.GetActorCodeID(av, actors.SystemKey); ok {
		return c, nil
	}

	switch av {
        {{range .versions}}
            {{if (le . 7)}}
            case actors.Version{{.}}:
                return builtin{{.}}.SystemActorCodeID, nil
            {{end}}
        {{end}}
	}

	return cid.Undef, xerrors.Errorf("unknown actor version %d", av)
}

func GetVerifregActorCodeID(av actors.Version) (cid.Cid, error) {
	if c, ok := actors.GetActorCodeID(av, actors.VerifregKey); ok {
		return c, nil
	}

	switch av {
        {{range .versions}}
            {{if (le . 7)}}
            case actors.Version{{.}}:
                return builtin{{.}}.VerifiedRegistryActorCodeID, nil
            {{end}}
        {{end}}
	}

	return cid.Undef, xerrors.Errorf("unknown actor version %d", av)
}

func makeAddress(addr string) address.Address {
	ret, err := address.NewFromString(addr)
	if err != nil {
		panic(err)
	}

	return ret
}