var bitrotAlgorithms = map[BitrotAlgorithm]string{
	SHA256:          "sha256",
	BLAKE2b512:      "blake2b",
	HighwayHash256:  "highwayhash256",
	HighwayHash256S: "highwayhash256S",
}

// New returns a new hash.Hash calculating the given bitrot algorithm.
func (a BitrotAlgorithm) New() hash.Hash {
	switch a {
	case SHA256:
		return sha256.New()
	case BLAKE2b512:

	}
	return len(p), nil
}

func (b *wholeBitrotWriter) Close() error {
	return nil
}

// Returns whole-file bitrot writer.
func newWholeBitrotWriter(disk StorageAPI, volume, filePath string, algo BitrotAlgorithm, shardSize int64) io.WriteCloser {
	return &wholeBitrotWriter{disk, volume, filePath, shardSize, algo.New()}
}

// Implementation to verify bitrot for the whole file.
type wholeBitrotReader struct {

		if ecindex != nei.Distribution[i] {
			return false
		}
	}
	return true
}

// BitrotAlgorithm specifies a algorithm used for bitrot protection.
type BitrotAlgorithm uint

const (
	// SHA256 represents the SHA-256 hash function
	SHA256 BitrotAlgorithm = 1 + iota
	// HighwayHash256 represents the HighwayHash-256 hash function
	HighwayHash256

func newStreamingBitrotWriterBuffer(w io.Writer, algo BitrotAlgorithm, shardSize int64) io.Writer {
	return &streamingBitrotWriter{iow: ioutil.NopCloser(w), h: algo.New(), shardSize: shardSize, canClose: nil, closeWithErr: func(err error) {}}
}

// Returns streaming bitrot writer implementation.
func newStreamingBitrotWriter(disk StorageAPI, origvolume, volume, filePath string, length int64, algo BitrotAlgorithm, shardSize int64) io.Writer {
	h := algo.New()

)

// DecodeMsg implements msgp.Decodable
func (z *BitrotAlgorithm) DecodeMsg(dc *msgp.Reader) (err error) {
	{
		var zb0001 uint
		zb0001, err = dc.ReadUint()
		if err != nil {
			err = msgp.WrapError(err)
			return
		}
		(*z) = BitrotAlgorithm(zb0001)
	}
	return
}

// EncodeMsg implements msgp.Encodable
func (z BitrotAlgorithm) EncodeMsg(en *msgp.Writer) (err error) {
	err = en.WriteUint(uint(z))

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"context"
	"io"
	"testing"
)

func testBitrotReaderWriterAlgo(t *testing.T, bitrotAlgo BitrotAlgorithm) {
	tmpDir := t.TempDir()

	volume := "testvol"
	filePath := "testfile"

	disk, err := newLocalXLStorage(tmpDir)
	if err != nil {
		t.Fatal(err)
	}

	disk.MakeVol(context.Background(), volume)

	// erasure reconstruction in this test
	offDisks int

	// bad disks are online disks which return errors
	badDisks, badStaleDisks int

	blocksize, size int64
	algorithm       BitrotAlgorithm
	shouldFail      bool
}{
	{dataBlocks: 2, disks: 4, offDisks: 1, badDisks: 0, badStaleDisks: 0, blocksize: int64(blockSizeV2), size: oneMiByte, algorithm: SHA256, shouldFail: false},                   // 0

var erasureEncodeTests = []struct {
	dataBlocks                   int
	onDisks, offDisks            int
	blocksize, data              int64
	offset                       int
	algorithm                    BitrotAlgorithm
	shouldFail, shouldFailQuorum bool
}{

	xlMeta.Meta = make(map[string]string)
	xlMeta.Meta["testKey1"] = "val1"
	xlMeta.Meta["testKey2"] = "val2"
	return xlMeta
}

func (m *xlMetaV1Object) AddTestObjectCheckSum(partNumber int, algorithm BitrotAlgorithm, hash string) {
	checksum, err := hex.DecodeString(hash)
	if err != nil {
		panic(err)
	}
	m.Erasure.Checksums[partNumber-1] = ChecksumInfo{partNumber, algorithm, checksum}
}

	dataBlocks                   int
	onDisks, offDisks            int
	blocksize, data              int64
	offset                       int64
	length                       int64
	algorithm                    BitrotAlgorithm
	shouldFail, shouldFailQuorum bool
}{