selfupdate

type Artifact struct {
	AssetName     string // archive attached to the release
	ChecksumName  string // SHA-256 listing of AssetName
	SignatureName string // ed25519 signature of ChecksumName
	BinaryName    string // executable inside the archive
}

type AssetFetcher interface {
	// Read returns a small asset, such as a checksum listing.
	Read(url string) ([]byte, error)
	// Download streams an asset into dstPath and returns its SHA-256.
	Download(url, dstPath string) (checksum string, err error)
}

type BinaryReplacer interface {
	// Path returns where the running binary lives.
	Path() string
	// StagePath returns a scratch path on the filesystem holding the binary.
	StagePath(name string) string
	// Install puts the binary at path in place of the running one and returns a
	// func rolling back to the previous binary.
	Install(path string) (rollback func(), err error)
	// Restart hands the process over to the installed binary. On success it does
	// not return.
	Restart(shutdownF func()) error
}

type FailureRegistry interface {
	Has(v *semver.Version) bool
	Set(v *semver.Version)
	Clear()
}

type Release struct {
	Version *semver.Version
	URL     string // page a human downloads it from
	// contains filtered or unexported fields
}

type ReleaseSource interface {
	Latest() (Release, error)
}

type SelfUpdater struct {
	// contains filtered or unexported fields
}