<?php

namespace Drupal\hederavita_core\EventSubscriber;

use Drupal\Core\Messenger\MessengerInterface;
use Drupal\Core\Path\CurrentPathStack;
use Drupal\marketing_tools\GoogleEventStorage;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
use Symfony\Component\HttpKernel\Event\GetResponseEvent;
use Symfony\Component\HttpKernel\KernelEvents;

/**
 * Hederavita Core event subscriber.
 */
class OderPlacedSubscriber implements EventSubscriberInterface {

  /**
   * The messenger.
   *
   * @var \Drupal\Core\Messenger\MessengerInterface
   */
  protected $messenger;

  /**
   * The marketing tool.
   *
   * @var \Drupal\marketing_tools\GoogleEventStorage
   */
  protected $marketing_tool;

  /**
   * The current path.
   *
   * @var \Drupal\Core\Path\CurrentPathStack
   */
  protected $current_path;

  /**
   * Constructs event subscriber.
   *
   * @param \Drupal\Core\Messenger\MessengerInterface $messenger
   *   The messenger.
   * @param \Drupal\marketing_tools\GoogleEventStorage $marketing_tool
   *   The marketing tool.
   * @param \Drupal\Core\Path\CurrentPathStack $current_path
   */
  public function __construct(MessengerInterface $messenger, GoogleEventStorage $marketing_tool, CurrentPathStack $current_path) {
    $this->messenger = $messenger;
    $this->marketing_tool = $marketing_tool;
    $this->current_path = $current_path;
  }

  /**
   * Kernel request event handler.
   *
   * @param \Symfony\Component\HttpKernel\Event\GetResponseEvent $event
   *   Response event.
   */
  public function onKernelRequest(GetResponseEvent $event) {
    $this->messenger->addStatus(__FUNCTION__);
  }

  /**
   * Kernel response event handler.
   *
   * @param \Symfony\Component\HttpKernel\Event\FilterResponseEvent $event
   *   Response event.
   */
  public function onKernelResponse(FilterResponseEvent $event) {
    $this->messenger->addStatus(__FUNCTION__);
  }

  /**
   * {@inheritdoc}
   */
  public static function getSubscribedEvents() {
    $events = [
      'commerce_order.place.pre_transition' => ['addEvent', 50],
    ];
    return $events;
  }

  /**
   * Create google event
   *
   * @return void
   */
  public function addEvent() {
    $path = $this->current_path->getPath();
    $path_parts = explode('/', $path);
    foreach ($path_parts as $path_part) {
      if (is_numeric($path_part)) {
        $order = \Drupal::entityTypeManager()
          ->getStorage('commerce_order')
          ->load($path_part);
      }
    }

    /** @var \Drupal\commerce_order\Entity\Order $order */
    $value = $order->getTotalPrice()->getNumber();
    $order_id = $order->id();

    $this->marketing_tool->addEvent([
      'event'  => 'conversion',
      'sendTo' => 'GTM-PZQ4TQZ',
      'value' => $value,
      'currency' => 'RSD',
      'transaction_id' => $order_id,
    ]);
  }

}