xhttp "github.com/minio/minio/internal/http"
)

// WarmBackendGetOpts is used to express byte ranges within an object. The zero
// value represents the entire byte range of an object.
type WarmBackendGetOpts struct {
	startOffset int64
	length      int64
}

// WarmBackend provides interface to be implemented by remote tier backends
type WarmBackend interface {

s","preservealpha","preserveaspectratio","primitiveunits","r","rx","ry","radius","refx","refy","repeatcount","repeatdur","restart","result","rotate","scale","seed","shape-rendering","slope","specularconstant","specularexponent","spreadmethod","startoffset","stddeviation","stitchtiles","stop-color","stop-opacity","stroke-dasharray","stroke-dashoffset","stroke-linecap","stroke-linejoin","stroke-miterlimit","stroke-opacity","stroke","stroke-width","style","surfacescale","systemlanguage","tabindex",...

	if partRangeErr := checkCopyPartRangeWithSize(rs, actualPartSize); partRangeErr != nil {
		writeCopyPartErr(ctx, w, partRangeErr, r.URL)
		return
	}

	// Get the object offset & length
	startOffset, length, err := rs.GetOffsetLength(actualPartSize)
	if err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	// maximum copy size for multipart objects in a single operation

	gopts := minio.GetObjectOptions{}

	if rv != "" {
		gopts.VersionID = string(rv)
	}
	if opts.startOffset >= 0 && opts.length > 0 {
		if err := gopts.SetRange(opts.startOffset, opts.startOffset+opts.length-1); err != nil {
			return nil, s3.ToObjectError(err, object)
		}
	}
	c := &minio.Core{Client: s3.client}

	if opts.startOffset < 0 {
		return nil, InvalidRange{}
	}
	resp, err := az.clnt.DownloadStream(ctx, az.Bucket, az.getDest(object), &azblob.DownloadStreamOptions{
		Range: blob.HTTPRange{Offset: opts.startOffset, Count: opts.length},
	})
	if err != nil {
		return nil, azureToObjectError(err, az.Bucket, az.getDest(object))
	}

	// Calling ReadCompressed with true accomplishes that.
	object := gcs.client.Bucket(gcs.Bucket).Object(gcs.getDest(key)).ReadCompressed(true)

	r, err = object.NewRangeReader(ctx, opts.startOffset, opts.length)
	if err != nil {
		return nil, gcsToObjectError(err, gcs.Bucket, key)
	}
	return r, nil
}

func (gcs *warmBackendGCS) Remove(ctx context.Context, key string, rv remoteVersionID) error {

// Copies a part of an object from source hashedSet to destination hashedSet.
func (z *erasureServerPools) CopyObjectPart(ctx context.Context, srcBucket, srcObject, destBucket, destObject string, uploadID string, partID int, startOffset int64, length int64, srcInfo ObjectInfo, srcOpts, dstOpts ObjectOptions) (PartInfo, error) {
	if err := checkNewMultipartArgs(ctx, srcBucket, srcObject); err != nil {
		return PartInfo{}, err
	}

	if err != nil {
		return nil, ErrorRespToObjectError(err, bucket, object)
	}
	gopts := WarmBackendGetOpts{}

	// get correct offsets for object
	if off >= 0 && length >= 0 {
		gopts.startOffset = off
		gopts.length = length
	}

	timeTierAction := auditTierActions(ctx, oi.TransitionedObject.Tier, length)