sl1m_dogg

<?php

namespace Tasks\task3;

use Tasks\task3\Strategy\CostStrategy;

class Lesson
{
    protected $duration;

    protected $costStrategy;

    public function __construct($duration, CostStrategy $strategy)
    {
        $this->duration = $duration;
        $this->costStrategy = $strategy;
    }

    public function cost()
    {
        return $this->costStrategy->cost($this);
    }

    public function chargeType()
    {
        return $this->costStrategy->chargeType();
    }

    public function getDuration()
    {
        return $this->duration;
    }
}

<?php

namespace MailerBundle\DependencyInjection;

use Symfony\Component\DependencyInjection\Definition;
use Symfony\Component\DependencyInjection\Reference;
use Symfony\Component\HttpKernel\DependencyInjection\Extension;
use Symfony\Component\DependencyInjection\ContainerBuilder;

class MailerExtension extends Extension
{

    /**
     * Loads a specific configuration.
     *
     * @param array $configs An array of configuration values
     * @param ContainerBuilder $container A ContainerBuilder instance
     *
     * @throws \InvalidArgumentException When provided tag is not defined in this extension
     */
    public function load(array $configs, ContainerBuilder $container)
    {
        $container->setDefinition('emailsender', new Definition('MailerBundle\Sender\EmailSender'),[
            new Reference('swiftmailer.mailer'),
            new Reference('swiftmailer.transport')]);

        $container->setDefinition('emailnotifier', new Definition('MailerBundle\Controller\EmailController'),[
                  new Reference('emailsender')]);
    }
}