<?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\Transport\Http\Api;

use Psr\Log\LoggerInterface;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
use Symfony\Component\HttpClient\HttpClient;
use Symfony\Component\Mailer\Exception\RuntimeException;
use Symfony\Component\Mailer\SentMessage;
use Symfony\Component\Mailer\SmtpEnvelope;
use Symfony\Component\Mailer\Transport\AbstractTransport;
use Symfony\Component\Mime\Address;
use Symfony\Component\Mime\Email;
use Symfony\Component\Mime\MessageConverter;
use Symfony\Contracts\HttpClient\HttpClientInterface;

/**
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @experimental in 4.3
 */
abstract class AbstractApiTransport extends AbstractTransport
{
    protected $client;

    public function __construct(HttpClientInterface $client = null, EventDispatcherInterface $dispatcher = null, LoggerInterface $logger = null)
    {
        $this->client = $client;
        if (null === $client) {
            if (!class_exists(HttpClient::class)) {
                throw new \LogicException(sprintf('You cannot use "%s" as the HttpClient component is not installed. Try running "composer require symfony/http-client".', __CLASS__));
            }

            $this->client = HttpClient::create();
        }

        parent::__construct($dispatcher, $logger);
    }

    abstract protected function doSendEmail(Email $email, SmtpEnvelope $envelope): void;

    protected function doSend(SentMessage $message): void
    {
        try {
            $email = MessageConverter::toEmail($message->getOriginalMessage());
        } catch (\Exception $e) {
            throw new RuntimeException(sprintf('Unable to send message with the "%s" transport: %s', __CLASS__, $e->getMessage()), 0, $e);
        }

        $this->doSendEmail($email, $message->getEnvelope());
    }

    protected function getRecipients(Email $email, SmtpEnvelope $envelope): array
    {
        return array_filter($envelope->getRecipients(), function (Address $address) use ($email) {
            return false === \in_array($address, array_merge($email->getCc(), $email->getBcc()), true);
        });
    }
}