/home/kueuepay/public_html/vendor/symfony/mailer/Envelope.php
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Mailer;

use Symfony\Component\Mailer\Exception\InvalidArgumentException;
use Symfony\Component\Mailer\Exception\LogicException;
use Symfony\Component\Mime\Address;
use Symfony\Component\Mime\RawMessage;

/**
 * @author Fabien Potencier <fabien@symfony.com>
 */
class Envelope
{
    private $sender;
    private array $recipients = [];

    /**
     * @param Address[] $recipients
     */
    public function __construct(Address $sender, array $recipients)
    {
        $this->setSender($sender);
        $this->setRecipients($recipients);
    }

    public static function create(RawMessage $message): self
    {
        if (RawMessage::class === \get_class($message)) {
            throw new LogicException('Cannot send a RawMessage instance without an explicit Envelope.');
        }

        return new DelayedEnvelope($message);
    }

    public function setSender(Address $sender): void
    {
        // to ensure deliverability of bounce emails independent of UTF-8 capabilities of SMTP servers
        if (!preg_match('/^[^@\x80-\xFF]++@/', $sender->getAddress())) {
            throw new InvalidArgumentException(sprintf('Invalid sender "%s": non-ASCII characters not supported in local-part of email.', $sender->getAddress()));
        }
        $this->sender = $sender;
    }

    /**
     * @return Address Returns a "mailbox" as specified by RFC 2822
     *                 Must be converted to an "addr-spec" when used as a "MAIL FROM" value in SMTP (use getAddress())
     */
    public function getSender(): Address
    {
        return $this->sender;
    }

    /**
     * @param Address[] $recipients
     */
    public function setRecipients(array $recipients): void
    {
        if (!$recipients) {
            throw new InvalidArgumentException('An envelope must have at least one recipient.');
        }

        $this->recipients = [];
        foreach ($recipients as $recipient) {
            if (!$recipient instanceof Address) {
                throw new InvalidArgumentException(sprintf('A recipient must be an instance of "%s" (got "%s").', Address::class, get_debug_type($recipient)));
            }
            $this->recipients[] = new Address($recipient->getAddress());
        }
    }

    /**
     * @return Address[]
     */
    public function getRecipients(): array
    {
        return $this->recipients;
    }
}
Best Practice

Best Practices

To ensure a smooth integration process and optimal performance, follow these best practices:

  1. Use secure HTTPS connections for all API requests.
  2. Implement robust error handling to handle potential issues gracefully.
  3. Regularly update your integration to stay current with any API changes or enhancements.