Function backupAndOverwrite

internal/cli/acul_screen_scaffolding.go:257–295

backupAndOverwrite backs up edited files, then overwrites them with source files.

(cli *cli, edited []string, sourceRoot, destRoot string)

// backupAndOverwrite backs up edited files, then overwrites them with source files.
func backupAndOverwrite(cli *cli, edited []string, sourceRoot, destRoot string) error {
	backupRoot := filepath.Join(destRoot, "back_up")

	// Remove existing backup folder if it exists.
	if _, err := os.Stat(backupRoot); err == nil {
		if err := os.RemoveAll(backupRoot); err != nil {
			return fmt.Errorf("failed to clear existing backup folder: %w", err)
		}
	}

	// Create a fresh backup folder.
	if err := os.MkdirAll(backupRoot, 0755); err != nil {
		return fmt.Errorf("failed to create backup directory: %w", err)
	}

	for _, relPath := range edited {
		destFile := filepath.Join(destRoot, relPath)
		backupFile := filepath.Join(backupRoot, relPath)
		sourceFile := filepath.Join(sourceRoot, relPath)

		if err := os.MkdirAll(filepath.Dir(backupFile), 0755); err != nil {
			cli.renderer.Warnf("Failed to create backup directory for %s: %v", relPath, err)
			continue
		}

		if err := copyFile(destFile, backupFile); err != nil {
			cli.renderer.Warnf("Failed to backup file %s: %v", relPath, err)
			continue
		}

		if err := copyFile(sourceFile, destFile); err != nil {
			cli.renderer.Errorf("Failed to overwrite file %s: %v", relPath, err)
			continue
		}

		cli.renderer.Infof("Overwritten: %s", relPath)
	}
	return nil
}

// processDirectories processes files in all base directories relative to chosenTemplate.
func processDirectories(cli *cli, baseDirs []string, sourceRoot, destRoot string) (missing, edited []string, err error) {