type Feature string

const (
	// The option `--type tar-rafs` enables converting OCI tar blob
	// stream into nydus blob directly, the tar2rafs eliminates the
	// need to decompress it to a local directory first, thus greatly
	// accelerating the pack process.
	FeatureTar2Rafs Feature = "--type tar-rafs"
	// The option `--batch-size` enables merging multiple small chunks
	// into a big batch chunk, which can reduce the the size of the image
	// and accelerate the runtime file loading.
	FeatureBatchSize Feature = "--batch-size"
	// The option `--encrypt` enables converting directories, tar files
	// or OCI images into encrypted nydus blob.
	FeatureEncrypt Feature = "--encrypt"
)

type Features map[Feature]struct{}

type MergeOption struct {
	BuilderPath string

	SourceBootstrapPaths []string
	RafsBlobDigests      []string
	RafsBlobTOCDigests   []string
	RafsBlobSizes        []int64

	TargetBootstrapPath string
	ChunkDictPath       string
	ParentBootstrapPath string
	PrefetchPatterns    string
	OutputJSONPath      string
	Timeout             *time.Duration
}

type PackOption struct {
	BuilderPath string

	BootstrapPath    string
	BlobPath         string
	FsVersion        string
	SourcePath       string
	ChunkDictPath    string
	PrefetchPatterns string
	Compressor       string
	OCIRef           bool
	AlignedChunk     bool
	ChunkSize        string
	BatchSize        string
	Encrypt          bool
	Timeout          *time.Duration

	Features Features
}

type UnpackOption struct {
	BuilderPath       string
	BootstrapPath     string
	BlobPath          string
	BackendConfigPath string
	TarPath           string
	Timeout           *time.Duration
}