<?php

namespace App\Shared\ValueObject;

use InvalidArgumentException;

final readonly class EmailAddress
{
    private const string ERROR_MESSAGE = 'Invalid email address:';

    private string $normalized;

    public function __construct(string $email)
    {
        $trimmedEmail = trim($email);
        if (
            $trimmedEmail === ''
            || ! str_contains($trimmedEmail, '@')
        ) {
            throw new InvalidArgumentException(
                self::ERROR_MESSAGE." $email",
            );
        }

        [$localPart, $domain] = explode('@', $trimmedEmail, 2);
        $normalizedEmail = $localPart.'@'.mb_strtolower($domain);
        if (filter_var($normalizedEmail, FILTER_VALIDATE_EMAIL) === false) {
            throw new InvalidArgumentException(
                self::ERROR_MESSAGE." $email",
            );
        }

        $this->normalized = $normalizedEmail;
    }

    public function value(): string
    {
        return $this->normalized;
    }
}