package api

import (
	"context"
	"io"

	"github.com/ipfs/go-cid"

	"github.com/filecoin-project/lotus/extern/sector-storage/sealtasks"
	"github.com/filecoin-project/lotus/extern/sector-storage/stores"
	"github.com/filecoin-project/lotus/extern/sector-storage/storiface"
	"github.com/filecoin-project/specs-actors/actors/abi"
	"github.com/filecoin-project/specs-storage/storage"

	"github.com/filecoin-project/lotus/build"
)

type WorkerAPI interface {
	Version(context.Context) (build.Version, error)
	// TODO: Info() (name, ...) ?

	TaskTypes(context.Context) (map[sealtasks.TaskType]struct{}, error) // TaskType -> Weight
	Paths(context.Context) ([]stores.StoragePath, error)
	Info(context.Context) (storiface.WorkerInfo, error)

	AddPiece(ctx context.Context, sector abi.SectorID, pieceSizes []abi.UnpaddedPieceSize, newPieceSize abi.UnpaddedPieceSize, pieceData storage.Data) (abi.PieceInfo, error)

	storage.Sealer

	MoveStorage(ctx context.Context, sector abi.SectorID) error

	UnsealPiece(context.Context, abi.SectorID, storiface.UnpaddedByteIndex, abi.UnpaddedPieceSize, abi.SealRandomness, cid.Cid) error
	ReadPiece(context.Context, io.Writer, abi.SectorID, storiface.UnpaddedByteIndex, abi.UnpaddedPieceSize) (bool, error)

	Fetch(context.Context, abi.SectorID, stores.SectorFileType, stores.PathType, stores.AcquireMode) error

	Closing(context.Context) (<-chan struct{}, error)
}