<?php

namespace App\Services;

class PhoneFormatterService
{
    /**
     * Format a raw phone number to (xxx)-xxx-xxxx format
     *
     * @param string $number
     * @return string|null
     */
    public function formatPhoneNumber(string $number): ?string
    {
        // Remove non-digit characters
        $digits = preg_replace('/\D/', '', $number);

        // Ensure it's exactly 10 digits
        if (strlen($digits) === 10) {
            return sprintf(
                '%s-%s-%s',
                substr($digits, 0, 3),
                substr($digits, 3, 3),
                substr($digits, 6)
            );
        }

        // Invalid number
        return null;
    }
}
