Function validateActionYml

pkg/cli/actions_build_command.go:167–199

validateActionYml validates that an action.yml file exists and contains required fields. This validation function is co-located with the actions build command because: - It's specific to GitHub Actions custom action structure - It's only called during the actions build process - It validates action

(actionPath string)

//
// This follows the principle that domain-specific validation belongs in domain files.
func validateActionYml(actionPath string) error {
	actionsBuildLog.Printf("Validating action.yml: path=%s", actionPath)
	ymlPath := filepath.Join(actionPath, "action.yml")

	if _, err := os.Stat(ymlPath); os.IsNotExist(err) {
		return errors.New("action.yml not found")
	}

	content, err := os.ReadFile(ymlPath)
	if err != nil {
		return fmt.Errorf("failed to read action.yml: %w", err)
	}

	contentStr := string(content)

	// Check required fields
	requiredFields := []string{"name:", "description:", "runs:"}
	for _, field := range requiredFields {
		if !strings.Contains(contentStr, field) {
			return fmt.Errorf("missing required field '%s'", strings.TrimSuffix(field, ":"))
		}
	}

	// Check that it's a supported action runtime (nodeXX or composite)
	isNodeJS := strings.Contains(contentStr, "using: 'node") || strings.Contains(contentStr, "using: \"node")
	isComposite := strings.Contains(contentStr, "using: 'composite'") || strings.Contains(contentStr, "using: \"composite\"")

	if !isNodeJS && !isComposite {
		return errors.New("action must use either a 'nodeXX' or 'composite' runtime")
	}

	return nil
}

// buildAction builds a single action by bundling its dependencies
func buildAction(actionsDir, actionName string) error {