pkg

type ChecksumCalculator interface {
	Calculate(filename string) (string, error)
	GetOfficialChecksum(filename string) (string, error)
}

type DefaultChecksumCalculator struct{}

type DefaultDownloader struct{}

type DefaultRemover struct{}

type DownloadConfig struct {
	Version    string
	TargetOS   string
	Arch       string
	Path       string
	Downloader FileDownloader
	Remover    FileRemover
	Checksum   ChecksumCalculator
	Input      io.Reader
	Output     io.Writer
}

type FileDownloader interface {
	Download(url, filename string) error
}

type FileRemover interface {
	Remove(filename string) error
}

type GoRelease struct {
	Version string `json:"version"`
	Stable  bool   `json:"stable"`
	Files   []struct {
		Filename string `json:"filename"`
		OS       string `json:"os"`
		Arch     string `json:"arch"`
		Version  string `json:"version"`
		SHA256   string `json:"sha256"`
	} `json:"files"`
}

type VersionChecker interface {
	GetLatestVersion() (string, error)
	GetCurrentVersion(versionFile, currentVersion string) (string, error)
	IsNewer(latestVersion, currentVersion string) bool
	DownloadGo(version, targetOS, arch, path string, input io.Reader, output io.Writer) error
}

type VersionService struct {
	Downloader FileDownloader
	Remover    FileRemover
	Checksum   ChecksumCalculator
	Input      io.Reader
	Output     io.Writer
}