Function CheckForUpdate

internal/update/update.go:58–92

CheckForUpdate checks if a newer version is available.

(currentVersion string, opts Options)

// CheckForUpdate checks if a newer version is available.
func CheckForUpdate(currentVersion string, opts Options) (*CheckResult, error) {
	current := normalizeVersion(currentVersion)

	client := &http.Client{Timeout: checkTimeout}
	resp, err := client.Get(opts.releasesURL())
	if err != nil {
		return nil, fmt.Errorf("fetching latest release: %w", err)
	}
	defer resp.Body.Close()

	// Rate limited — silently assume current version is up to date
	if resp.StatusCode == http.StatusForbidden {
		return &CheckResult{
			CurrentVersion:  current,
			LatestVersion:   current,
			UpdateAvailable: false,
		}, nil
	}
	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("GitHub API returned status %d", resp.StatusCode)
	}

	var release Release
	if err := json.NewDecoder(resp.Body).Decode(&release); err != nil {
		return nil, fmt.Errorf("parsing release response: %w", err)
	}

	latest := normalizeVersion(release.TagName)

	return &CheckResult{
		CurrentVersion:  current,
		LatestVersion:   latest,
		UpdateAvailable: baseVersion(current) != latest && current != "dev",
	}, nil
}

// PerformUpdate downloads and installs the latest version.
func PerformUpdate(currentVersion string, opts Options) (*CheckResult, error) {