Function promptNonInteractiveSelect

pkg/cli/interactive.go:384–414

promptNonInteractiveSelect prints a numbered list and reads a single selection. The user may enter a number (1-based index) or the option value directly.

(scanner *bufio.Scanner, title string, options []struct{ label, value string })

// promptNonInteractiveSelect prints a numbered list and reads a single selection.
// The user may enter a number (1-based index) or the option value directly.
func promptNonInteractiveSelect(scanner *bufio.Scanner, title string, options []struct{ label, value string }) (string, error) {
	fmt.Fprintf(os.Stderr, "\n%s\n", title)
	for i, opt := range options {
		fmt.Fprintf(os.Stderr, "  %d) %s\n", i+1, opt.label)
	}
	fmt.Fprintf(os.Stderr, "Select (1-%d): ", len(options))

	if !scanner.Scan() {
		if err := scanner.Err(); err != nil {
			return "", fmt.Errorf("failed to read input: %w", err)
		}
		return "", errors.New("no input provided")
	}
	input := strings.TrimSpace(scanner.Text())

	// Accept a numeric index
	if idx, err := strconv.Atoi(input); err == nil {
		if idx < 1 || idx > len(options) {
			return "", fmt.Errorf("selection out of range (must be 1-%d)", len(options))
		}
		return options[idx-1].value, nil
	}

	// Accept the value directly
	for _, opt := range options {
		if opt.value == input {
			return opt.value, nil
		}
	}
	return "", fmt.Errorf("invalid selection %q", input)
}

// promptNonInteractiveMultiSelect prints a numbered list and reads comma-separated selections.
// Each token may be a 1-based index or an option value. An empty input selects nothing.