import (
	"errors"
	"fmt"

	"github.com/tinylib/msgp/msgp"
)

// xlMetaInlineData is serialized data in [string][]byte pairs.
type xlMetaInlineData []byte

// xlMetaInlineDataVer indicates the version of the inline data structure.
const xlMetaInlineDataVer = 1

// versionOK returns whether the version is ok.
func (x xlMetaInlineData) versionOK() bool {
	if len(x) == 0 {
		return true
	}

}

const xlMetaInlineDataVer = 1

type xlMetaInlineData []byte

// afterVersion returns the payload after the version, if any.
func (x xlMetaInlineData) afterVersion() []byte {
	if len(x) == 0 {
		return x
	}
	return x[1:]
}

// versionOK returns whether the version is ok.
func (x xlMetaInlineData) versionOK() bool {
	if len(x) == 0 {
		return true
	}

	InclFreeVersions bool
	Data             bool
}

func getFileInfo(xlMetaBuf []byte, volume, path, versionID string, opts fileInfoOpts) (FileInfo, error) {
	var fi FileInfo
	var err error
	var inData xlMetaInlineData
	if buf, data, e := isIndexedMetaV2(xlMetaBuf); e != nil {
		return FileInfo{}, e
	} else if buf != nil {
		inData = data
		fi, err = buf.ToFileInfo(volume, path, versionID, true)

// isIndexedMetaV2 returns non-nil result if metadata is indexed.
// Returns 3x nil if not XLV2 or not indexed.
// If indexed and unable to parse an error will be returned.
func isIndexedMetaV2(buf []byte) (meta xlMetaBuf, data xlMetaInlineData, err error) {
	buf, major, minor, err := checkXL2V1(buf)
	if err != nil || major != 1 || minor < 3 {
		return nil, nil, nil
	}
	meta, buf, err = msgp.ReadBytesZC(buf)
	if err != nil {