class MailerTestCommand

final class MailerTestCommand extends Command {
    public function __construct(TransportInterface $transport) {
        parent::__construct();
    }
    protected function configure() : void {
        $this->addArgument('to', InputArgument::REQUIRED, 'The recipient of the message')
            ->addOption('from', null, InputOption::VALUE_OPTIONAL, 'The sender of the message', 'from@example.org')
            ->addOption('subject', null, InputOption::VALUE_OPTIONAL, 'The subject of the message', 'Testing transport')
            ->addOption('body', null, InputOption::VALUE_OPTIONAL, 'The body of the message', 'Testing body')
            ->addOption('transport', null, InputOption::VALUE_OPTIONAL, 'The transport to be used')
            ->setHelp(<<<'EOF'
The <info>%command.name%</info> command tests a Mailer transport by sending a simple email message:

<info>php %command.full_name% to@example.com</info>

You can also specify a specific transport:

    <info>php %command.full_name% to@example.com --transport=transport_name</info>

Note that this command bypasses the Messenger bus if configured.

EOF
);
    }
    protected function execute(InputInterface $input, OutputInterface $output) : int {
        $message = (new Email())->to($input->getArgument('to'))
            ->from($input->getOption('from'))
            ->subject($input->getOption('subject'))
            ->text($input->getOption('body'));
        if ($transport = $input->getOption('transport')) {
            $message->getHeaders()
                ->addTextHeader('X-Transport', $transport);
        }
        $this->transport
            ->send($message);
        return 0;
    }

}