package sectorbuilder

import (
	"context"
	"io"

	sectorbuilder "github.com/filecoin-project/go-sectorbuilder"
	"go.opencensus.io/trace"

	"github.com/filecoin-project/lotus/chain/address"
)

func (sb *SectorBuilder) GeneratePoSt(sectorInfo SortedSectorInfo, challengeSeed [CommLen]byte, faults []uint64) ([]byte, error) {
	// Wait, this is a blocking method with no way of interrupting it?
	// does it checkpoint itself?
	return sectorbuilder.GeneratePoSt(sb.handle, sectorInfo, challengeSeed, faults)
}

func (sb *SectorBuilder) SectorSize() uint64 {
	return sb.ssize
}

var UserBytesForSectorSize = sectorbuilder.GetMaxUserBytesPerStagedSector

func VerifySeal(sectorSize uint64, commR, commD []byte, proverID address.Address, ticket []byte, seed []byte, sectorID uint64, proof []byte) (bool, error) {
	var commRa, commDa, ticketa, seeda [32]byte
	copy(commRa[:], commR)
	copy(commDa[:], commD)
	copy(ticketa[:], ticket)
	copy(seeda[:], seed)
	proverIDa := addressToProverID(proverID)

	return sectorbuilder.VerifySeal(sectorSize, commRa, commDa, proverIDa, ticketa, seeda, sectorID, proof)
}

func NewSortedSectorInfo(sectors []SectorInfo) SortedSectorInfo {
	return sectorbuilder.NewSortedSectorInfo(sectors...)
}

func VerifyPost(ctx context.Context, sectorSize uint64, sectorInfo SortedSectorInfo, challengeSeed [CommLen]byte, proof []byte, faults []uint64) (bool, error) {
	_, span := trace.StartSpan(ctx, "VerifyPoSt")
	defer span.End()
	return sectorbuilder.VerifyPoSt(sectorSize, sectorInfo, challengeSeed, proof, faults)
}

func GeneratePieceCommitment(piece io.Reader, pieceSize uint64) (commP [CommLen]byte, err error) {
	f, werr, err := toReadableFile(piece, int64(pieceSize))
	if err != nil {
		return [32]byte{}, err
	}

	commP, err = sectorbuilder.GeneratePieceCommitmentFromFile(f, pieceSize)
	if err != nil {
		return [32]byte{}, err
	}

	return commP, werr()
}

func GenerateDataCommitment(ssize uint64, pieces []PublicPieceInfo) ([CommLen]byte, error) {
	return sectorbuilder.GenerateDataCommitment(ssize, pieces)
}