selfupdate

type Deps struct {
	// Version is the currently running binary's version; GOOS and GOARCH
	// select the release asset to download.
	Version string
	GOOS    string
	GOARCH  string

	// APIURL is the releases endpoint queried for the latest release, and
	// HTTPClient performs every HTTP request.
	APIURL     string
	HTTPClient *http.Client

	// ExecutablePath resolves the path of the currently running binary.
	ExecutablePath func() (string, error)

	// TempDir is the directory the update is staged in. Defaults to the
	// running binary's own directory, so the final rename never crosses
	// filesystems.
	TempDir string

	// ValidateURL checks a download URL, and every redirect target, before
	// it is fetched. Defaults to validateAssetURL (HTTPS from github.com or
	// GitHub's release asset hosts only).
	ValidateURL func(rawURL string) error

	// ValidateAsset checks the download URL of a release asset against the
	// release's tag before it is fetched. Defaults to validateReleaseAsset
	// (the repository's own release of that tag only).
	ValidateAsset func(rawURL, tag string) error

	// RunVersion runs a binary with --version and returns its trimmed
	// output. Defaults to runVersion.
	RunVersion func(ctx context.Context, path string) (string, error)

	// LookCosign returns the path of the cosign binary used to verify the
	// release signature, or an error when there is none. Defaults to
	// exec.LookPath("cosign").
	LookCosign func() (string, error)

	// RunCosign runs the cosign binary at path with args and returns its
	// combined output. Defaults to runCosign.
	RunCosign func(ctx context.Context, path string, args ...string) ([]byte, error)

	// Rename moves a file, for the swap of the binary and its backup.
	// Defaults to fsutil.Rename.
	Rename func(oldpath, newpath string) error
}