package paych

import (
    {{if (ge .v 8)}}
  	"golang.org/x/xerrors"
    {{end}}

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

	paychtypes "github.com/filecoin-project/go-state-types/builtin/v8/paych"
    {{if (le .v 7)}}
	    builtin{{.v}} "github.com/filecoin-project/specs-actors{{.import}}actors/builtin"
	    init{{.v}} "github.com/filecoin-project/specs-actors{{.import}}actors/builtin/init"
	    paych{{.v}} "github.com/filecoin-project/specs-actors{{.import}}actors/builtin/paych"
    {{else}}
    	actorstypes "github.com/filecoin-project/go-state-types/actors"
        builtin{{.v}} "github.com/filecoin-project/go-state-types/builtin"
        paych{{.v}} "github.com/filecoin-project/go-state-types/builtin/v{{.v}}/paych"
        init{{.v}} "github.com/filecoin-project/go-state-types/builtin/v{{.v}}/init"
    {{end}}


	"github.com/filecoin-project/lotus/chain/actors"
	init_ "github.com/filecoin-project/lotus/chain/actors/builtin/init"
	"github.com/filecoin-project/lotus/chain/types"
)

type message{{.v}} struct{ from address.Address }

func (m message{{.v}}) Create(to address.Address, initialAmount abi.TokenAmount) (*types.Message, error) {
    {{if (le .v 7)}}
    actorCodeID := builtin{{.v}}.PaymentChannelActorCodeID
    {{else}}
    actorCodeID, ok := actors.GetActorCodeID(actorstypes.Version{{.v}}, "paymentchannel")
    if !ok {
      return nil, xerrors.Errorf("error getting actor paymentchannel code id for actor version %d", {{.v}})
    }
    {{end}}

	params, aerr := actors.SerializeParams(&paych{{.v}}.ConstructorParams{From: m.from, To: to})
	if aerr != nil {
		return nil, aerr
	}
	enc, aerr := actors.SerializeParams(&init{{.v}}.ExecParams{
		CodeCID:           actorCodeID,
		ConstructorParams: params,
	})
	if aerr != nil {
		return nil, aerr
	}

	return &types.Message{
		To:     init_.Address,
		From:   m.from,
		Value:  initialAmount,
		Method: builtin{{.v}}.MethodsInit.Exec,
		Params: enc,
	}, nil
}

func (m message{{.v}}) Update(paych address.Address, sv *paychtypes.SignedVoucher, secret []byte) (*types.Message, error) {
	params, aerr := actors.SerializeParams(&paych{{.v}}.UpdateChannelStateParams{
	{{if (le .v 6)}}
	    Sv:     toV0SignedVoucher(*sv),
	{{else if (le .v 8)}}
		Sv:     *sv,
    {{else}}
        Sv:     toV{{.v}}SignedVoucher(*sv),
	{{end}}
		Secret: secret,
	})
	if aerr != nil {
		return nil, aerr
	}

	return &types.Message{
		To:     paych,
		From:   m.from,
		Value:  abi.NewTokenAmount(0),
		Method: builtin{{.v}}.MethodsPaych.UpdateChannelState,
		Params: params,
	}, nil
}

{{if (ge .v 9)}}
    func toV{{.v}}SignedVoucher(sv paychtypes.SignedVoucher) paych{{.v}}.SignedVoucher {
    	merges := make([]paych{{.v}}.Merge, len(sv.Merges))
        for i := range sv.Merges {
            merges[i] = paych{{.v}}.Merge{
                Lane:  sv.Merges[i].Lane,
                Nonce: sv.Merges[i].Nonce,
            }
        }

        return paych{{.v}}.SignedVoucher{
            ChannelAddr:     sv.ChannelAddr,
            TimeLockMin:     sv.TimeLockMin,
            TimeLockMax:     sv.TimeLockMax,
            SecretHash:      sv.SecretHash,
            Extra:           (*paych{{.v}}.ModVerifyParams)(sv.Extra),
            Lane:            sv.Lane,
            Nonce:           sv.Nonce,
            Amount:          sv.Amount,
            MinSettleHeight: sv.MinSettleHeight,
            Merges:          merges,
            Signature:       sv.Signature,
        }
    }
{{end}}

func (m message{{.v}}) Settle(paych address.Address) (*types.Message, error) {
	return &types.Message{
		To:     paych,
		From:   m.from,
		Value:  abi.NewTokenAmount(0),
		Method: builtin{{.v}}.MethodsPaych.Settle,
	}, nil
}

func (m message{{.v}}) Collect(paych address.Address) (*types.Message, error) {
	return &types.Message{
		To:     paych,
		From:   m.from,
		Value:  abi.NewTokenAmount(0),
		Method: builtin{{.v}}.MethodsPaych.Collect,
	}, nil
}