package full

import (
	"bytes"
	"context"
	"strconv"

	cid "github.com/ipfs/go-cid"
	cbor "github.com/ipfs/go-ipld-cbor"
	"go.uber.org/fx"
	"golang.org/x/xerrors"

	"github.com/filecoin-project/go-address"
	"github.com/filecoin-project/go-bitfield"
	"github.com/filecoin-project/go-state-types/abi"
	"github.com/filecoin-project/go-state-types/big"
	"github.com/filecoin-project/go-state-types/dline"
	"github.com/filecoin-project/go-state-types/network"
	"github.com/filecoin-project/lotus/extern/sector-storage/ffiwrapper"

	"github.com/filecoin-project/lotus/api"
	"github.com/filecoin-project/lotus/chain/actors/builtin"
	"github.com/filecoin-project/lotus/chain/actors/builtin/market"
	"github.com/filecoin-project/lotus/chain/actors/builtin/miner"
	"github.com/filecoin-project/lotus/chain/actors/builtin/multisig"
	"github.com/filecoin-project/lotus/chain/actors/builtin/power"
	"github.com/filecoin-project/lotus/chain/actors/builtin/reward"
	"github.com/filecoin-project/lotus/chain/actors/builtin/verifreg"
	"github.com/filecoin-project/lotus/chain/actors/policy"
	"github.com/filecoin-project/lotus/chain/beacon"
	"github.com/filecoin-project/lotus/chain/gen"
	"github.com/filecoin-project/lotus/chain/state"
	"github.com/filecoin-project/lotus/chain/stmgr"
	"github.com/filecoin-project/lotus/chain/store"
	"github.com/filecoin-project/lotus/chain/types"
	"github.com/filecoin-project/lotus/chain/vm"
	"github.com/filecoin-project/lotus/chain/wallet"
	"github.com/filecoin-project/lotus/lib/bufbstore"
	"github.com/filecoin-project/lotus/node/modules/dtypes"
)

type StateModuleAPI interface {
	MsigGetAvailableBalance(ctx context.Context, addr address.Address, tsk types.TipSetKey) (types.BigInt, error)
	MsigGetVested(ctx context.Context, addr address.Address, start types.TipSetKey, end types.TipSetKey) (types.BigInt, error)
	StateAccountKey(ctx context.Context, addr address.Address, tsk types.TipSetKey) (address.Address, error)
	StateDealProviderCollateralBounds(ctx context.Context, size abi.PaddedPieceSize, verified bool, tsk types.TipSetKey) (api.DealCollateralBounds, error)
	StateGetActor(ctx context.Context, actor address.Address, tsk types.TipSetKey) (*types.Actor, error)
	StateGetReceipt(context.Context, cid.Cid, types.TipSetKey) (*types.MessageReceipt, error)
	StateListMiners(ctx context.Context, tsk types.TipSetKey) ([]address.Address, error)
	StateLookupID(ctx context.Context, addr address.Address, tsk types.TipSetKey) (address.Address, error)
	StateMarketBalance(ctx context.Context, addr address.Address, tsk types.TipSetKey) (api.MarketBalance, error)
	StateMarketStorageDeal(ctx context.Context, dealId abi.DealID, tsk types.TipSetKey) (*api.MarketDeal, error)
	StateMinerInfo(ctx context.Context, actor address.Address, tsk types.TipSetKey) (miner.MinerInfo, error)
	StateMinerProvingDeadline(ctx context.Context, addr address.Address, tsk types.TipSetKey) (*dline.Info, error)
	StateMinerPower(context.Context, address.Address, types.TipSetKey) (*api.MinerPower, error)
	StateNetworkVersion(ctx context.Context, key types.TipSetKey) (network.Version, error)
	StateSectorGetInfo(ctx context.Context, maddr address.Address, n abi.SectorNumber, tsk types.TipSetKey) (*miner.SectorOnChainInfo, error)
	StateSearchMsg(ctx context.Context, msg cid.Cid) (*api.MsgLookup, error)
	StateVerifiedClientStatus(ctx context.Context, addr address.Address, tsk types.TipSetKey) (*abi.StoragePower, error)
	StateWaitMsg(ctx context.Context, msg cid.Cid, confidence uint64) (*api.MsgLookup, error)
}

// StateModule provides a default implementation of StateModuleAPI.
// It can be swapped out with another implementation through Dependency
// Injection (for example with a thin RPC client).
type StateModule struct {
	fx.In

	StateManager *stmgr.StateManager
	Chain        *store.ChainStore
}

var _ StateModuleAPI = (*StateModule)(nil)

type StateAPI struct {
	fx.In

	// TODO: the wallet here is only needed because we have the MinerCreateBlock
	// API attached to the state API. It probably should live somewhere better
	Wallet    api.WalletAPI
	DefWallet wallet.Default

	StateModuleAPI

	ProofVerifier ffiwrapper.Verifier
	StateManager  *stmgr.StateManager
	Chain         *store.ChainStore
	Beacon        beacon.Schedule
}

func (a *StateAPI) StateNetworkName(ctx context.Context) (dtypes.NetworkName, error) {
	return stmgr.GetNetworkName(ctx, a.StateManager, a.Chain.GetHeaviestTipSet().ParentState())
}

func (a *StateAPI) StateMinerSectors(ctx context.Context, addr address.Address, sectorNos *bitfield.BitField, tsk types.TipSetKey) ([]*miner.SectorOnChainInfo, error) {
	ts, err := a.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return nil, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}
	return stmgr.GetMinerSectorSet(ctx, a.StateManager, ts, addr, sectorNos)
}

func (a *StateAPI) StateMinerActiveSectors(ctx context.Context, maddr address.Address, tsk types.TipSetKey) ([]*miner.SectorOnChainInfo, error) { // TODO: only used in cli
	ts, err := a.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return nil, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}

	act, err := a.StateManager.LoadActorTsk(ctx, maddr, tsk)
	if err != nil {
		return nil, xerrors.Errorf("failed to load miner actor: %w", err)
	}

	mas, err := miner.Load(a.StateManager.ChainStore().Store(ctx), act)
	if err != nil {
		return nil, xerrors.Errorf("failed to load miner actor state: %w", err)
	}

	activeSectors, err := miner.AllPartSectors(mas, miner.Partition.ActiveSectors)
	if err != nil {
		return nil, xerrors.Errorf("merge partition active sets: %w", err)
	}

	return stmgr.GetMinerSectorSet(ctx, a.StateManager, ts, maddr, &activeSectors)
}

func (m *StateModule) StateMinerInfo(ctx context.Context, actor address.Address, tsk types.TipSetKey) (miner.MinerInfo, error) {
	ts, err := m.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return miner.MinerInfo{}, xerrors.Errorf("failed to load tipset: %w", err)
	}

	act, err := m.StateManager.LoadActor(ctx, actor, ts)
	if err != nil {
		return miner.MinerInfo{}, xerrors.Errorf("failed to load miner actor: %w", err)
	}

	mas, err := miner.Load(m.StateManager.ChainStore().Store(ctx), act)
	if err != nil {
		return miner.MinerInfo{}, xerrors.Errorf("failed to load miner actor state: %w", err)
	}

	// TODO: You know, this is terrible.
	// I mean, we _really_ shouldn't do this. Maybe we should convert somewhere else?
	info, err := mas.Info()
	if err != nil {
		return miner.MinerInfo{}, err
	}
	if m.StateManager.GetNtwkVersion(ctx, ts.Height()) >= network.Version7 && info.SealProofType < abi.RegisteredSealProof_StackedDrg2KiBV1_1 {
		info.SealProofType += abi.RegisteredSealProof_StackedDrg2KiBV1_1
	}
	return info, nil
}

func (a *StateAPI) StateMinerDeadlines(ctx context.Context, m address.Address, tsk types.TipSetKey) ([]api.Deadline, error) {
	act, err := a.StateManager.LoadActorTsk(ctx, m, tsk)
	if err != nil {
		return nil, xerrors.Errorf("failed to load miner actor: %w", err)
	}

	mas, err := miner.Load(a.StateManager.ChainStore().Store(ctx), act)
	if err != nil {
		return nil, xerrors.Errorf("failed to load miner actor state: %w", err)
	}

	deadlines, err := mas.NumDeadlines()
	if err != nil {
		return nil, xerrors.Errorf("getting deadline count: %w", err)
	}

	out := make([]api.Deadline, deadlines)
	if err := mas.ForEachDeadline(func(i uint64, dl miner.Deadline) error {
		ps, err := dl.PostSubmissions()
		if err != nil {
			return err
		}

		out[i] = api.Deadline{
			PostSubmissions: ps,
		}
		return nil
	}); err != nil {
		return nil, err
	}
	return out, nil
}

func (a *StateAPI) StateMinerPartitions(ctx context.Context, m address.Address, dlIdx uint64, tsk types.TipSetKey) ([]api.Partition, error) {
	act, err := a.StateManager.LoadActorTsk(ctx, m, tsk)
	if err != nil {
		return nil, xerrors.Errorf("failed to load miner actor: %w", err)
	}

	mas, err := miner.Load(a.StateManager.ChainStore().Store(ctx), act)
	if err != nil {
		return nil, xerrors.Errorf("failed to load miner actor state: %w", err)
	}

	dl, err := mas.LoadDeadline(dlIdx)
	if err != nil {
		return nil, xerrors.Errorf("failed to load the deadline: %w", err)
	}

	var out []api.Partition
	err = dl.ForEachPartition(func(_ uint64, part miner.Partition) error {
		allSectors, err := part.AllSectors()
		if err != nil {
			return xerrors.Errorf("getting AllSectors: %w", err)
		}

		faultySectors, err := part.FaultySectors()
		if err != nil {
			return xerrors.Errorf("getting FaultySectors: %w", err)
		}

		recoveringSectors, err := part.RecoveringSectors()
		if err != nil {
			return xerrors.Errorf("getting RecoveringSectors: %w", err)
		}

		liveSectors, err := part.LiveSectors()
		if err != nil {
			return xerrors.Errorf("getting LiveSectors: %w", err)
		}

		activeSectors, err := part.ActiveSectors()
		if err != nil {
			return xerrors.Errorf("getting ActiveSectors: %w", err)
		}

		out = append(out, api.Partition{
			AllSectors:        allSectors,
			FaultySectors:     faultySectors,
			RecoveringSectors: recoveringSectors,
			LiveSectors:       liveSectors,
			ActiveSectors:     activeSectors,
		})
		return nil
	})

	return out, err
}

func (m *StateModule) StateMinerProvingDeadline(ctx context.Context, addr address.Address, tsk types.TipSetKey) (*dline.Info, error) {
	ts, err := m.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return nil, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}

	act, err := m.StateManager.LoadActor(ctx, addr, ts)
	if err != nil {
		return nil, xerrors.Errorf("failed to load miner actor: %w", err)
	}

	mas, err := miner.Load(m.StateManager.ChainStore().Store(ctx), act)
	if err != nil {
		return nil, xerrors.Errorf("failed to load miner actor state: %w", err)
	}

	di, err := mas.DeadlineInfo(ts.Height())
	if err != nil {
		return nil, xerrors.Errorf("failed to get deadline info: %w", err)
	}

	return di.NextNotElapsed(), nil
}

func (a *StateAPI) StateMinerFaults(ctx context.Context, addr address.Address, tsk types.TipSetKey) (bitfield.BitField, error) {
	act, err := a.StateManager.LoadActorTsk(ctx, addr, tsk)
	if err != nil {
		return bitfield.BitField{}, xerrors.Errorf("failed to load miner actor: %w", err)
	}

	mas, err := miner.Load(a.StateManager.ChainStore().Store(ctx), act)
	if err != nil {
		return bitfield.BitField{}, xerrors.Errorf("failed to load miner actor state: %w", err)
	}

	return miner.AllPartSectors(mas, miner.Partition.FaultySectors)
}

func (a *StateAPI) StateAllMinerFaults(ctx context.Context, lookback abi.ChainEpoch, endTsk types.TipSetKey) ([]*api.Fault, error) {
	return nil, xerrors.Errorf("fixme")

	/*endTs, err := a.Chain.GetTipSetFromKey(endTsk)
	if err != nil {
		return nil, xerrors.Errorf("loading end tipset %s: %w", endTsk, err)
	}

	cutoff := endTs.Height() - lookback
	miners, err := stmgr.ListMinerActors(ctx, a.StateManager, endTs)

	if err != nil {
		return nil, xerrors.Errorf("loading miners: %w", err)
	}

	var allFaults []*api.Fault

	for _, m := range miners {
		var mas miner.State
		_, err := a.StateManager.LoadActorState(ctx, m, &mas, endTs)
		if err != nil {
			return nil, xerrors.Errorf("failed to load miner actor state %s: %w", m, err)
		}

		err = mas.ForEachFaultEpoch(a.Chain.Store(ctx), func(faultStart abi.ChainEpoch, faults abi.BitField) error {
			if faultStart >= cutoff {
				allFaults = append(allFaults, &api.Fault{
					Miner: m,
					Epoch: faultStart,
				})
				return nil
			}
			return nil
		})

		if err != nil {
			return nil, xerrors.Errorf("failure when iterating over miner states: %w", err)
		}
	}

	return allFaults, nil*/
}

func (a *StateAPI) StateMinerRecoveries(ctx context.Context, addr address.Address, tsk types.TipSetKey) (bitfield.BitField, error) {
	act, err := a.StateManager.LoadActorTsk(ctx, addr, tsk)
	if err != nil {
		return bitfield.BitField{}, xerrors.Errorf("failed to load miner actor: %w", err)
	}

	mas, err := miner.Load(a.StateManager.ChainStore().Store(ctx), act)
	if err != nil {
		return bitfield.BitField{}, xerrors.Errorf("failed to load miner actor state: %w", err)
	}

	return miner.AllPartSectors(mas, miner.Partition.RecoveringSectors)
}

func (m *StateModule) StateMinerPower(ctx context.Context, addr address.Address, tsk types.TipSetKey) (*api.MinerPower, error) {
	ts, err := m.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return nil, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}

	mp, net, hmp, err := stmgr.GetPower(ctx, m.StateManager, ts, addr)
	if err != nil {
		return nil, err
	}

	return &api.MinerPower{
		MinerPower:  mp,
		TotalPower:  net,
		HasMinPower: hmp,
	}, nil
}

func (a *StateAPI) StateCall(ctx context.Context, msg *types.Message, tsk types.TipSetKey) (res *api.InvocResult, err error) {
	ts, err := a.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return nil, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}
	for {
		res, err = a.StateManager.Call(ctx, msg, ts)
		if err != stmgr.ErrExpensiveFork {
			break
		}
		ts, err = a.Chain.GetTipSetFromKey(ts.Parents())
		if err != nil {
			return nil, xerrors.Errorf("getting parent tipset: %w", err)
		}
	}
	return res, err
}

func (a *StateAPI) StateReplay(ctx context.Context, tsk types.TipSetKey, mc cid.Cid) (*api.InvocResult, error) {
	msgToReplay := mc
	var ts *types.TipSet
	var err error
	if tsk == types.EmptyTSK {
		mlkp, err := a.StateSearchMsg(ctx, mc)
		if err != nil {
			return nil, xerrors.Errorf("searching for msg %s: %w", mc, err)
		}
		if mlkp == nil {
			return nil, xerrors.Errorf("didn't find msg %s", mc)
		}

		msgToReplay = mlkp.Message

		executionTs, err := a.Chain.GetTipSetFromKey(mlkp.TipSet)
		if err != nil {
			return nil, xerrors.Errorf("loading tipset %s: %w", mlkp.TipSet, err)
		}

		ts, err = a.Chain.LoadTipSet(executionTs.Parents())
		if err != nil {
			return nil, xerrors.Errorf("loading parent tipset %s: %w", mlkp.TipSet, err)
		}
	} else {
		ts, err = a.Chain.LoadTipSet(tsk)
		if err != nil {
			return nil, xerrors.Errorf("loading specified tipset %s: %w", tsk, err)
		}
	}

	m, r, err := a.StateManager.Replay(ctx, ts, msgToReplay)
	if err != nil {
		return nil, err
	}

	var errstr string
	if r.ActorErr != nil {
		errstr = r.ActorErr.Error()
	}

	return &api.InvocResult{
		MsgCid:         msgToReplay,
		Msg:            m,
		MsgRct:         &r.MessageReceipt,
		GasCost:        stmgr.MakeMsgGasCost(m, r),
		ExecutionTrace: r.ExecutionTrace,
		Error:          errstr,
		Duration:       r.Duration,
	}, nil
}

func stateForTs(ctx context.Context, ts *types.TipSet, cstore *store.ChainStore, smgr *stmgr.StateManager) (*state.StateTree, error) {
	if ts == nil {
		ts = cstore.GetHeaviestTipSet()
	}

	st, _, err := smgr.TipSetState(ctx, ts)
	if err != nil {
		return nil, err
	}

	buf := bufbstore.NewBufferedBstore(cstore.Blockstore())
	cst := cbor.NewCborStore(buf)
	return state.LoadStateTree(cst, st)
}
func (a *StateAPI) stateForTs(ctx context.Context, ts *types.TipSet) (*state.StateTree, error) {
	return stateForTs(ctx, ts, a.Chain, a.StateManager)
}
func (m *StateModule) stateForTs(ctx context.Context, ts *types.TipSet) (*state.StateTree, error) {
	return stateForTs(ctx, ts, m.Chain, m.StateManager)
}

func (m *StateModule) StateGetActor(ctx context.Context, actor address.Address, tsk types.TipSetKey) (*types.Actor, error) {
	ts, err := m.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return nil, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}
	state, err := m.stateForTs(ctx, ts)
	if err != nil {
		return nil, xerrors.Errorf("computing tipset state failed: %w", err)
	}

	return state.GetActor(actor)
}

func (m *StateModule) StateLookupID(ctx context.Context, addr address.Address, tsk types.TipSetKey) (address.Address, error) {
	ts, err := m.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return address.Undef, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}

	return m.StateManager.LookupID(ctx, addr, ts)
}

func (m *StateModule) StateAccountKey(ctx context.Context, addr address.Address, tsk types.TipSetKey) (address.Address, error) {
	ts, err := m.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return address.Undef, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}

	return m.StateManager.ResolveToKeyAddress(ctx, addr, ts)
}

func (a *StateAPI) StateReadState(ctx context.Context, actor address.Address, tsk types.TipSetKey) (*api.ActorState, error) {
	ts, err := a.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return nil, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}
	state, err := a.stateForTs(ctx, ts)
	if err != nil {
		return nil, xerrors.Errorf("getting state for tipset: %w", err)
	}

	act, err := state.GetActor(actor)
	if err != nil {
		return nil, xerrors.Errorf("getting actor: %w", err)
	}

	blk, err := state.Store.(*cbor.BasicIpldStore).Blocks.Get(act.Head)
	if err != nil {
		return nil, xerrors.Errorf("getting actor head: %w", err)
	}

	oif, err := vm.DumpActorState(act, blk.RawData())
	if err != nil {
		return nil, xerrors.Errorf("dumping actor state (a:%s): %w", actor, err)
	}

	return &api.ActorState{
		Balance: act.Balance,
		State:   oif,
	}, nil
}

func (a *StateAPI) StateDecodeParams(ctx context.Context, toAddr address.Address, method abi.MethodNum, params []byte, tsk types.TipSetKey) (interface{}, error) {
	act, err := a.StateGetActor(ctx, toAddr, tsk)
	if err != nil {
		return nil, xerrors.Errorf("getting actor: %w", err)
	}

	paramType, err := stmgr.GetParamType(act.Code, method)
	if err != nil {
		return nil, xerrors.Errorf("getting params type: %w", err)
	}

	if err = paramType.UnmarshalCBOR(bytes.NewReader(params)); err != nil {
		return nil, err
	}

	return paramType, nil
}

// This is on StateAPI because miner.Miner requires this, and MinerAPI requires miner.Miner
func (a *StateAPI) MinerGetBaseInfo(ctx context.Context, maddr address.Address, epoch abi.ChainEpoch, tsk types.TipSetKey) (*api.MiningBaseInfo, error) {
	return stmgr.MinerGetBaseInfo(ctx, a.StateManager, a.Beacon, tsk, epoch, maddr, a.ProofVerifier)
}

func (a *StateAPI) MinerCreateBlock(ctx context.Context, bt *api.BlockTemplate) (*types.BlockMsg, error) {
	fblk, err := gen.MinerCreateBlock(ctx, a.StateManager, a.Wallet, bt)
	if err != nil {
		return nil, err
	}

	var out types.BlockMsg
	out.Header = fblk.Header
	for _, msg := range fblk.BlsMessages {
		out.BlsMessages = append(out.BlsMessages, msg.Cid())
	}
	for _, msg := range fblk.SecpkMessages {
		out.SecpkMessages = append(out.SecpkMessages, msg.Cid())
	}

	return &out, nil
}

func (m *StateModule) StateWaitMsg(ctx context.Context, msg cid.Cid, confidence uint64) (*api.MsgLookup, error) {
	return stateWaitMsgLimited(ctx, m.StateManager, m.Chain, msg, confidence, stmgr.LookbackNoLimit)
}
func (a *StateAPI) StateWaitMsgLimited(ctx context.Context, msg cid.Cid, confidence uint64, lookbackLimit abi.ChainEpoch) (*api.MsgLookup, error) {
	return stateWaitMsgLimited(ctx, a.StateManager, a.Chain, msg, confidence, lookbackLimit)
}
func stateWaitMsgLimited(ctx context.Context, smgr *stmgr.StateManager, cstore *store.ChainStore, msg cid.Cid, confidence uint64, lookbackLimit abi.ChainEpoch) (*api.MsgLookup, error) {
	ts, recpt, found, err := smgr.WaitForMessage(ctx, msg, confidence, lookbackLimit)
	if err != nil {
		return nil, err
	}

	var returndec interface{}
	if recpt.ExitCode == 0 && len(recpt.Return) > 0 {
		cmsg, err := cstore.GetCMessage(msg)
		if err != nil {
			return nil, xerrors.Errorf("failed to load message after successful receipt search: %w", err)
		}

		vmsg := cmsg.VMMessage()

		t, err := stmgr.GetReturnType(ctx, smgr, vmsg.To, vmsg.Method, ts)
		if err != nil {
			return nil, xerrors.Errorf("failed to get return type: %w", err)
		}

		if err := t.UnmarshalCBOR(bytes.NewReader(recpt.Return)); err != nil {
			return nil, err
		}

		returndec = t
	}

	return &api.MsgLookup{
		Message:   found,
		Receipt:   *recpt,
		ReturnDec: returndec,
		TipSet:    ts.Key(),
		Height:    ts.Height(),
	}, nil
}

func (m *StateModule) StateSearchMsg(ctx context.Context, msg cid.Cid) (*api.MsgLookup, error) {
	return stateSearchMsgLimited(ctx, m.StateManager, msg, stmgr.LookbackNoLimit)
}
func (a *StateAPI) StateSearchMsgLimited(ctx context.Context, msg cid.Cid, lookbackLimit abi.ChainEpoch) (*api.MsgLookup, error) {
	return stateSearchMsgLimited(ctx, a.StateManager, msg, lookbackLimit)
}
func stateSearchMsgLimited(ctx context.Context, smgr *stmgr.StateManager, msg cid.Cid, lookbackLimit abi.ChainEpoch) (*api.MsgLookup, error) {
	ts, recpt, found, err := smgr.SearchForMessage(ctx, msg, lookbackLimit)
	if err != nil {
		return nil, err
	}

	if ts != nil {
		return &api.MsgLookup{
			Message: found,
			Receipt: *recpt,
			TipSet:  ts.Key(),
			Height:  ts.Height(),
		}, nil
	}
	return nil, nil
}

func (m *StateModule) StateGetReceipt(ctx context.Context, msg cid.Cid, tsk types.TipSetKey) (*types.MessageReceipt, error) {
	ts, err := m.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return nil, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}
	return m.StateManager.GetReceipt(ctx, msg, ts)
}

func (m *StateModule) StateListMiners(ctx context.Context, tsk types.TipSetKey) ([]address.Address, error) {
	ts, err := m.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return nil, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}
	return stmgr.ListMinerActors(ctx, m.StateManager, ts)
}

func (a *StateAPI) StateListActors(ctx context.Context, tsk types.TipSetKey) ([]address.Address, error) {
	ts, err := a.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return nil, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}
	return a.StateManager.ListAllActors(ctx, ts)
}

func (m *StateModule) StateMarketBalance(ctx context.Context, addr address.Address, tsk types.TipSetKey) (api.MarketBalance, error) {
	ts, err := m.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return api.MarketBalance{}, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}
	return m.StateManager.MarketBalance(ctx, addr, ts)
}

func (a *StateAPI) StateMarketParticipants(ctx context.Context, tsk types.TipSetKey) (map[string]api.MarketBalance, error) {
	out := map[string]api.MarketBalance{}

	ts, err := a.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return nil, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}

	state, err := a.StateManager.GetMarketState(ctx, ts)
	if err != nil {
		return nil, err
	}
	escrow, err := state.EscrowTable()
	if err != nil {
		return nil, err
	}
	locked, err := state.LockedTable()
	if err != nil {
		return nil, err
	}

	err = escrow.ForEach(func(a address.Address, es abi.TokenAmount) error {

		lk, err := locked.Get(a)
		if err != nil {
			return err
		}

		out[a.String()] = api.MarketBalance{
			Escrow: es,
			Locked: lk,
		}
		return nil
	})
	if err != nil {
		return nil, err
	}
	return out, nil
}

func (a *StateAPI) StateMarketDeals(ctx context.Context, tsk types.TipSetKey) (map[string]api.MarketDeal, error) {
	out := map[string]api.MarketDeal{}

	ts, err := a.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return nil, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}

	state, err := a.StateManager.GetMarketState(ctx, ts)
	if err != nil {
		return nil, err
	}

	da, err := state.Proposals()
	if err != nil {
		return nil, err
	}

	sa, err := state.States()
	if err != nil {
		return nil, err
	}

	if err := da.ForEach(func(dealID abi.DealID, d market.DealProposal) error {
		s, found, err := sa.Get(dealID)
		if err != nil {
			return xerrors.Errorf("failed to get state for deal in proposals array: %w", err)
		} else if !found {
			s = market.EmptyDealState()
		}
		out[strconv.FormatInt(int64(dealID), 10)] = api.MarketDeal{
			Proposal: d,
			State:    *s,
		}
		return nil
	}); err != nil {
		return nil, err
	}
	return out, nil
}

func (m *StateModule) StateMarketStorageDeal(ctx context.Context, dealId abi.DealID, tsk types.TipSetKey) (*api.MarketDeal, error) {
	ts, err := m.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return nil, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}
	return stmgr.GetStorageDeal(ctx, m.StateManager, dealId, ts)
}

func (a *StateAPI) StateChangedActors(ctx context.Context, old cid.Cid, new cid.Cid) (map[string]types.Actor, error) {
	store := a.Chain.Store(ctx)

	oldTree, err := state.LoadStateTree(store, old)
	if err != nil {
		return nil, xerrors.Errorf("failed to load old state tree: %w", err)
	}

	newTree, err := state.LoadStateTree(store, new)
	if err != nil {
		return nil, xerrors.Errorf("failed to load new state tree: %w", err)
	}

	return state.Diff(oldTree, newTree)
}

func (a *StateAPI) StateMinerSectorCount(ctx context.Context, addr address.Address, tsk types.TipSetKey) (api.MinerSectors, error) {
	act, err := a.StateManager.LoadActorTsk(ctx, addr, tsk)
	if err != nil {
		return api.MinerSectors{}, err
	}
	mas, err := miner.Load(a.Chain.Store(ctx), act)
	if err != nil {
		return api.MinerSectors{}, err
	}
	var activeCount, liveCount, faultyCount uint64
	if err := mas.ForEachDeadline(func(_ uint64, dl miner.Deadline) error {
		return dl.ForEachPartition(func(_ uint64, part miner.Partition) error {
			if active, err := part.ActiveSectors(); err != nil {
				return err
			} else if count, err := active.Count(); err != nil {
				return err
			} else {
				activeCount += count
			}
			if live, err := part.LiveSectors(); err != nil {
				return err
			} else if count, err := live.Count(); err != nil {
				return err
			} else {
				liveCount += count
			}
			if faulty, err := part.FaultySectors(); err != nil {
				return err
			} else if count, err := faulty.Count(); err != nil {
				return err
			} else {
				faultyCount += count
			}
			return nil
		})
	}); err != nil {
		return api.MinerSectors{}, err
	}
	return api.MinerSectors{Live: liveCount, Active: activeCount, Faulty: faultyCount}, nil
}

func (a *StateAPI) StateSectorPreCommitInfo(ctx context.Context, maddr address.Address, n abi.SectorNumber, tsk types.TipSetKey) (miner.SectorPreCommitOnChainInfo, error) {
	ts, err := a.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return miner.SectorPreCommitOnChainInfo{}, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}

	pci, err := stmgr.PreCommitInfo(ctx, a.StateManager, maddr, n, ts)
	if err != nil {
		return miner.SectorPreCommitOnChainInfo{}, err
	} else if pci == nil {
		return miner.SectorPreCommitOnChainInfo{}, xerrors.Errorf("precommit info is not exists")
	}

	return *pci, err
}

func (m *StateModule) StateSectorGetInfo(ctx context.Context, maddr address.Address, n abi.SectorNumber, tsk types.TipSetKey) (*miner.SectorOnChainInfo, error) {
	ts, err := m.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return nil, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}
	return stmgr.MinerSectorInfo(ctx, m.StateManager, maddr, n, ts)
}

func (a *StateAPI) StateSectorExpiration(ctx context.Context, maddr address.Address, sectorNumber abi.SectorNumber, tsk types.TipSetKey) (*miner.SectorExpiration, error) {
	act, err := a.StateManager.LoadActorTsk(ctx, maddr, tsk)
	if err != nil {
		return nil, err
	}
	mas, err := miner.Load(a.StateManager.ChainStore().Store(ctx), act)
	if err != nil {
		return nil, err
	}
	return mas.GetSectorExpiration(sectorNumber)
}

func (a *StateAPI) StateSectorPartition(ctx context.Context, maddr address.Address, sectorNumber abi.SectorNumber, tsk types.TipSetKey) (*miner.SectorLocation, error) {
	act, err := a.StateManager.LoadActorTsk(ctx, maddr, tsk)
	if err != nil {
		return nil, err
	}
	mas, err := miner.Load(a.StateManager.ChainStore().Store(ctx), act)
	if err != nil {
		return nil, err
	}
	return mas.FindSector(sectorNumber)
}

func (a *StateAPI) StateListMessages(ctx context.Context, match *api.MessageMatch, tsk types.TipSetKey, toheight abi.ChainEpoch) ([]cid.Cid, error) {
	ts, err := a.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return nil, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}
	if ts == nil {
		ts = a.Chain.GetHeaviestTipSet()
	}

	if match.To == address.Undef && match.From == address.Undef {
		return nil, xerrors.Errorf("must specify at least To or From in message filter")
	}

	matchFunc := func(msg *types.Message) bool {
		if match.From != address.Undef && match.From != msg.From {
			return false
		}

		if match.To != address.Undef && match.To != msg.To {
			return false
		}

		return true
	}

	var out []cid.Cid
	for ts.Height() >= toheight {
		msgs, err := a.Chain.MessagesForTipset(ts)
		if err != nil {
			return nil, xerrors.Errorf("failed to get messages for tipset (%s): %w", ts.Key(), err)
		}

		for _, msg := range msgs {
			if matchFunc(msg.VMMessage()) {
				out = append(out, msg.Cid())
			}
		}

		if ts.Height() == 0 {
			break
		}

		next, err := a.Chain.LoadTipSet(ts.Parents())
		if err != nil {
			return nil, xerrors.Errorf("loading next tipset: %w", err)
		}

		ts = next
	}

	return out, nil
}

func (a *StateAPI) StateCompute(ctx context.Context, height abi.ChainEpoch, msgs []*types.Message, tsk types.TipSetKey) (*api.ComputeStateOutput, error) {
	ts, err := a.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return nil, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}
	st, t, err := stmgr.ComputeState(ctx, a.StateManager, height, msgs, ts)
	if err != nil {
		return nil, err
	}

	return &api.ComputeStateOutput{
		Root:  st,
		Trace: t,
	}, nil
}

func (m *StateModule) MsigGetAvailableBalance(ctx context.Context, addr address.Address, tsk types.TipSetKey) (types.BigInt, error) {
	ts, err := m.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}

	act, err := m.StateManager.LoadActor(ctx, addr, ts)
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("failed to load multisig actor: %w", err)
	}
	msas, err := multisig.Load(m.Chain.Store(ctx), act)
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("failed to load multisig actor state: %w", err)
	}
	locked, err := msas.LockedBalance(ts.Height())
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("failed to compute locked multisig balance: %w", err)
	}
	return types.BigSub(act.Balance, locked), nil
}

func (a *StateAPI) MsigGetVestingSchedule(ctx context.Context, addr address.Address, tsk types.TipSetKey) (api.MsigVesting, error) {
	ts, err := a.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return api.EmptyVesting, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}

	act, err := a.StateManager.LoadActor(ctx, addr, ts)
	if err != nil {
		return api.EmptyVesting, xerrors.Errorf("failed to load multisig actor: %w", err)
	}

	msas, err := multisig.Load(a.Chain.Store(ctx), act)
	if err != nil {
		return api.EmptyVesting, xerrors.Errorf("failed to load multisig actor state: %w", err)
	}

	ib, err := msas.InitialBalance()
	if err != nil {
		return api.EmptyVesting, xerrors.Errorf("failed to load multisig initial balance: %w", err)
	}

	se, err := msas.StartEpoch()
	if err != nil {
		return api.EmptyVesting, xerrors.Errorf("failed to load multisig start epoch: %w", err)
	}

	ud, err := msas.UnlockDuration()
	if err != nil {
		return api.EmptyVesting, xerrors.Errorf("failed to load multisig unlock duration: %w", err)
	}

	return api.MsigVesting{
		InitialBalance: ib,
		StartEpoch:     se,
		UnlockDuration: ud,
	}, nil
}

func (m *StateModule) MsigGetVested(ctx context.Context, addr address.Address, start types.TipSetKey, end types.TipSetKey) (types.BigInt, error) {
	startTs, err := m.Chain.GetTipSetFromKey(start)
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("loading start tipset %s: %w", start, err)
	}

	endTs, err := m.Chain.GetTipSetFromKey(end)
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("loading end tipset %s: %w", end, err)
	}

	if startTs.Height() > endTs.Height() {
		return types.EmptyInt, xerrors.Errorf("start tipset %d is after end tipset %d", startTs.Height(), endTs.Height())
	} else if startTs.Height() == endTs.Height() {
		return big.Zero(), nil
	}

	act, err := m.StateManager.LoadActor(ctx, addr, endTs)
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("failed to load multisig actor at end epoch: %w", err)
	}

	msas, err := multisig.Load(m.Chain.Store(ctx), act)
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("failed to load multisig actor state: %w", err)
	}

	startLk, err := msas.LockedBalance(startTs.Height())
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("failed to compute locked balance at start height: %w", err)
	}

	endLk, err := msas.LockedBalance(endTs.Height())
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("failed to compute locked balance at end height: %w", err)
	}

	return types.BigSub(startLk, endLk), nil
}

var initialPledgeNum = types.NewInt(110)
var initialPledgeDen = types.NewInt(100)

func (a *StateAPI) StateMinerPreCommitDepositForPower(ctx context.Context, maddr address.Address, pci miner.SectorPreCommitInfo, tsk types.TipSetKey) (types.BigInt, error) {
	ts, err := a.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}

	state, err := a.StateManager.ParentState(ts)
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("loading state %s: %w", tsk, err)
	}

	ssize, err := pci.SealProof.SectorSize()
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("failed to get resolve size: %w", err)
	}

	store := a.Chain.Store(ctx)

	var sectorWeight abi.StoragePower
	if act, err := state.GetActor(market.Address); err != nil {
		return types.EmptyInt, xerrors.Errorf("loading market actor %s: %w", maddr, err)
	} else if s, err := market.Load(store, act); err != nil {
		return types.EmptyInt, xerrors.Errorf("loading market actor state %s: %w", maddr, err)
	} else if w, vw, err := s.VerifyDealsForActivation(maddr, pci.DealIDs, ts.Height(), pci.Expiration); err != nil {
		return types.EmptyInt, xerrors.Errorf("verifying deals for activation: %w", err)
	} else {
		// NB: not exactly accurate, but should always lead us to *over* estimate, not under
		duration := pci.Expiration - ts.Height()
		sectorWeight = builtin.QAPowerForWeight(ssize, duration, w, vw)
	}

	var powerSmoothed builtin.FilterEstimate
	if act, err := state.GetActor(power.Address); err != nil {
		return types.EmptyInt, xerrors.Errorf("loading power actor: %w", err)
	} else if s, err := power.Load(store, act); err != nil {
		return types.EmptyInt, xerrors.Errorf("loading power actor state: %w", err)
	} else if p, err := s.TotalPowerSmoothed(); err != nil {
		return types.EmptyInt, xerrors.Errorf("failed to determine total power: %w", err)
	} else {
		powerSmoothed = p
	}

	rewardActor, err := state.GetActor(reward.Address)
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("loading miner actor: %w", err)
	}

	rewardState, err := reward.Load(store, rewardActor)
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("loading reward actor state: %w", err)
	}

	deposit, err := rewardState.PreCommitDepositForPower(powerSmoothed, sectorWeight)
	if err != nil {
		return big.Zero(), xerrors.Errorf("calculating precommit deposit: %w", err)
	}

	return types.BigDiv(types.BigMul(deposit, initialPledgeNum), initialPledgeDen), nil
}

func (a *StateAPI) StateMinerInitialPledgeCollateral(ctx context.Context, maddr address.Address, pci miner.SectorPreCommitInfo, tsk types.TipSetKey) (types.BigInt, error) {
	// TODO: this repeats a lot of the previous function. Fix that.
	ts, err := a.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}

	state, err := a.StateManager.ParentState(ts)
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("loading state %s: %w", tsk, err)
	}

	ssize, err := pci.SealProof.SectorSize()
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("failed to get resolve size: %w", err)
	}

	store := a.Chain.Store(ctx)

	var sectorWeight abi.StoragePower
	if act, err := state.GetActor(market.Address); err != nil {
		return types.EmptyInt, xerrors.Errorf("loading miner actor %s: %w", maddr, err)
	} else if s, err := market.Load(store, act); err != nil {
		return types.EmptyInt, xerrors.Errorf("loading market actor state %s: %w", maddr, err)
	} else if w, vw, err := s.VerifyDealsForActivation(maddr, pci.DealIDs, ts.Height(), pci.Expiration); err != nil {
		return types.EmptyInt, xerrors.Errorf("verifying deals for activation: %w", err)
	} else {
		// NB: not exactly accurate, but should always lead us to *over* estimate, not under
		duration := pci.Expiration - ts.Height()
		sectorWeight = builtin.QAPowerForWeight(ssize, duration, w, vw)
	}

	var (
		powerSmoothed    builtin.FilterEstimate
		pledgeCollateral abi.TokenAmount
	)
	if act, err := state.GetActor(power.Address); err != nil {
		return types.EmptyInt, xerrors.Errorf("loading miner actor: %w", err)
	} else if s, err := power.Load(store, act); err != nil {
		return types.EmptyInt, xerrors.Errorf("loading power actor state: %w", err)
	} else if p, err := s.TotalPowerSmoothed(); err != nil {
		return types.EmptyInt, xerrors.Errorf("failed to determine total power: %w", err)
	} else if c, err := s.TotalLocked(); err != nil {
		return types.EmptyInt, xerrors.Errorf("failed to determine pledge collateral: %w", err)
	} else {
		powerSmoothed = p
		pledgeCollateral = c
	}

	rewardActor, err := state.GetActor(reward.Address)
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("loading miner actor: %w", err)
	}

	rewardState, err := reward.Load(store, rewardActor)
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("loading reward actor state: %w", err)
	}

	circSupply, err := a.StateVMCirculatingSupplyInternal(ctx, ts.Key())
	if err != nil {
		return big.Zero(), xerrors.Errorf("getting circulating supply: %w", err)
	}

	initialPledge, err := rewardState.InitialPledgeForPower(
		sectorWeight,
		pledgeCollateral,
		&powerSmoothed,
		circSupply.FilCirculating,
	)
	if err != nil {
		return big.Zero(), xerrors.Errorf("calculating initial pledge: %w", err)
	}

	return types.BigDiv(types.BigMul(initialPledge, initialPledgeNum), initialPledgeDen), nil
}

func (a *StateAPI) StateMinerAvailableBalance(ctx context.Context, maddr address.Address, tsk types.TipSetKey) (types.BigInt, error) {
	ts, err := a.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}

	act, err := a.StateManager.LoadActor(ctx, maddr, ts)
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("failed to load miner actor: %w", err)
	}

	mas, err := miner.Load(a.StateManager.ChainStore().Store(ctx), act)
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("failed to load miner actor state: %w", err)
	}

	vested, err := mas.VestedFunds(ts.Height())
	if err != nil {
		return types.EmptyInt, err
	}

	abal, err := mas.AvailableBalance(act.Balance)
	if err != nil {
		return types.EmptyInt, err
	}

	return types.BigAdd(abal, vested), nil
}

func (a *StateAPI) StateMinerSectorAllocated(ctx context.Context, maddr address.Address, s abi.SectorNumber, tsk types.TipSetKey) (bool, error) {
	ts, err := a.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return false, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}

	act, err := a.StateManager.LoadActor(ctx, maddr, ts)
	if err != nil {
		return false, xerrors.Errorf("failed to load miner actor: %w", err)
	}

	mas, err := miner.Load(a.StateManager.ChainStore().Store(ctx), act)
	if err != nil {
		return false, xerrors.Errorf("failed to load miner actor state: %w", err)
	}

	return mas.IsAllocated(s)
}

// StateVerifiedClientStatus returns the data cap for the given address.
// Returns zero if there is no entry in the data cap table for the
// address.
func (a *StateAPI) StateVerifierStatus(ctx context.Context, addr address.Address, tsk types.TipSetKey) (*abi.StoragePower, error) {
	act, err := a.StateGetActor(ctx, verifreg.Address, tsk)
	if err != nil {
		return nil, err
	}

	aid, err := a.StateLookupID(ctx, addr, tsk)
	if err != nil {
		log.Warnf("lookup failure %v", err)
		return nil, err
	}

	vrs, err := verifreg.Load(a.StateManager.ChainStore().Store(ctx), act)
	if err != nil {
		return nil, xerrors.Errorf("failed to load verified registry state: %w", err)
	}

	verified, dcap, err := vrs.VerifierDataCap(aid)
	if err != nil {
		return nil, xerrors.Errorf("looking up verifier: %w", err)
	}
	if !verified {
		return nil, nil
	}

	return &dcap, nil
}

// StateVerifiedClientStatus returns the data cap for the given address.
// Returns zero if there is no entry in the data cap table for the
// address.
func (m *StateModule) StateVerifiedClientStatus(ctx context.Context, addr address.Address, tsk types.TipSetKey) (*abi.StoragePower, error) {
	act, err := m.StateGetActor(ctx, verifreg.Address, tsk)
	if err != nil {
		return nil, err
	}

	aid, err := m.StateLookupID(ctx, addr, tsk)
	if err != nil {
		log.Warnf("lookup failure %v", err)
		return nil, err
	}

	vrs, err := verifreg.Load(m.StateManager.ChainStore().Store(ctx), act)
	if err != nil {
		return nil, xerrors.Errorf("failed to load verified registry state: %w", err)
	}

	verified, dcap, err := vrs.VerifiedClientDataCap(aid)
	if err != nil {
		return nil, xerrors.Errorf("looking up verified client: %w", err)
	}
	if !verified {
		return nil, nil
	}

	return &dcap, nil
}

func (a *StateAPI) StateVerifiedRegistryRootKey(ctx context.Context, tsk types.TipSetKey) (address.Address, error) {
	vact, err := a.StateGetActor(ctx, verifreg.Address, tsk)
	if err != nil {
		return address.Undef, err
	}

	vst, err := verifreg.Load(a.StateManager.ChainStore().Store(ctx), vact)
	if err != nil {
		return address.Undef, err
	}

	return vst.RootKey()
}

var dealProviderCollateralNum = types.NewInt(110)
var dealProviderCollateralDen = types.NewInt(100)

// StateDealProviderCollateralBounds returns the min and max collateral a storage provider
// can issue. It takes the deal size and verified status as parameters.
func (m *StateModule) StateDealProviderCollateralBounds(ctx context.Context, size abi.PaddedPieceSize, verified bool, tsk types.TipSetKey) (api.DealCollateralBounds, error) {
	ts, err := m.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return api.DealCollateralBounds{}, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}

	pact, err := m.StateGetActor(ctx, power.Address, tsk)
	if err != nil {
		return api.DealCollateralBounds{}, xerrors.Errorf("failed to load power actor: %w", err)
	}

	ract, err := m.StateGetActor(ctx, reward.Address, tsk)
	if err != nil {
		return api.DealCollateralBounds{}, xerrors.Errorf("failed to load reward actor: %w", err)
	}

	pst, err := power.Load(m.StateManager.ChainStore().Store(ctx), pact)
	if err != nil {
		return api.DealCollateralBounds{}, xerrors.Errorf("failed to load power actor state: %w", err)
	}

	rst, err := reward.Load(m.StateManager.ChainStore().Store(ctx), ract)
	if err != nil {
		return api.DealCollateralBounds{}, xerrors.Errorf("failed to load reward actor state: %w", err)
	}

	circ, err := stateVMCirculatingSupplyInternal(ctx, ts.Key(), m.Chain, m.StateManager)
	if err != nil {
		return api.DealCollateralBounds{}, xerrors.Errorf("getting total circulating supply: %w", err)
	}

	powClaim, err := pst.TotalPower()
	if err != nil {
		return api.DealCollateralBounds{}, xerrors.Errorf("getting total power: %w", err)
	}

	rewPow, err := rst.ThisEpochBaselinePower()
	if err != nil {
		return api.DealCollateralBounds{}, xerrors.Errorf("getting reward baseline power: %w", err)
	}

	min, max := policy.DealProviderCollateralBounds(size,
		verified,
		powClaim.RawBytePower,
		powClaim.QualityAdjPower,
		rewPow,
		circ.FilCirculating,
		m.StateManager.GetNtwkVersion(ctx, ts.Height()))
	return api.DealCollateralBounds{
		Min: types.BigDiv(types.BigMul(min, dealProviderCollateralNum), dealProviderCollateralDen),
		Max: max,
	}, nil
}

func (a *StateAPI) StateCirculatingSupply(ctx context.Context, tsk types.TipSetKey) (abi.TokenAmount, error) {
	ts, err := a.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return types.EmptyInt, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}

	sTree, err := a.stateForTs(ctx, ts)
	if err != nil {
		return types.EmptyInt, err
	}
	return a.StateManager.GetCirculatingSupply(ctx, ts.Height(), sTree)
}

func (a *StateAPI) StateVMCirculatingSupplyInternal(ctx context.Context, tsk types.TipSetKey) (api.CirculatingSupply, error) {
	return stateVMCirculatingSupplyInternal(ctx, tsk, a.Chain, a.StateManager)
}
func stateVMCirculatingSupplyInternal(
	ctx context.Context,
	tsk types.TipSetKey,
	cstore *store.ChainStore,
	smgr *stmgr.StateManager,
) (api.CirculatingSupply, error) {
	ts, err := cstore.GetTipSetFromKey(tsk)
	if err != nil {
		return api.CirculatingSupply{}, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}

	sTree, err := stateForTs(ctx, ts, cstore, smgr)
	if err != nil {
		return api.CirculatingSupply{}, err
	}

	return smgr.GetVMCirculatingSupplyDetailed(ctx, ts.Height(), sTree)
}

func (m *StateModule) StateNetworkVersion(ctx context.Context, tsk types.TipSetKey) (network.Version, error) {
	ts, err := m.Chain.GetTipSetFromKey(tsk)
	if err != nil {
		return network.VersionMax, xerrors.Errorf("loading tipset %s: %w", tsk, err)
	}

	return m.StateManager.GetNtwkVersion(ctx, ts.Height()), nil
}