type Client interface {
	Scheme

	CleanupDatabase(ctx context.Context, prefix string, names ...string) error
	EnsurePathExists(ctx context.Context, path string) error
}

type Directory struct {
	Entry
	Children []Entry
}

type Entry struct {
	Name                 string
	Owner                string
	Type                 EntryType
	Permissions          []Permissions
	EffectivePermissions []Permissions
}

type EntryType uint

const (
	EntryTypeUnknown EntryType = iota
	EntryDirectory
	EntryTable
	EntryPersQueueGroup
	EntryDatabase
	EntryRtmrVolume
	EntryBlockStoreVolume
	EntryCoordinationNode
)

type Permissions struct {
	Subject         string
	PermissionNames []string
}

type PermissionsOption func(permissionsDesc)

type Scheme interface {
	DescribePath(ctx context.Context, path string) (e Entry, err error)
	MakeDirectory(ctx context.Context, path string) (err error)
	ListDirectory(ctx context.Context, path string) (d Directory, err error)
	RemoveDirectory(ctx context.Context, path string) (err error)
	ModifyPermissions(ctx context.Context, path string, opts ...PermissionsOption) (err error)

	Close(ctx context.Context) error
}