<?php

namespace Drupal\DrupalExtension\Compiler;

use Symfony\Component\DependencyInjection\Reference,
    Symfony\Component\DependencyInjection\ContainerBuilder,
    Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;

/**
 * Drupal\DrupalExtension container compilation pass.
 */
class DriverPass implements CompilerPassInterface {
  /**
   * Register Drupal drivers.
   */
  public function process(ContainerBuilder $container) {
    if (!$container->hasDefinition('drupal.drupal')) {
      return;
    }

    $drupalDefinition = $container->getDefinition('drupal.drupal');
    foreach ($container->findTaggedServiceIds('drupal.driver') as $id => $attributes) {
      foreach ($attributes as $attribute) {
        if (isset($attribute['alias']) && $name = $attribute['alias']) {
          $drupalDefinition->addMethodCall(
            'registerDriver', array($name, new Reference($id))
          );
        }
      }

      // If this is Drupal Driver, then a core controller needs to be
      // instantiated as well.
      if ('drupal.driver.drupal' === $id) {
        $drupalDriverDefinition = $container->getDefinition($id);
        $availableCores = array();
        foreach ($container->findTaggedServiceIds('drupal.core') as $coreId => $coreAttributes) {
          foreach ($coreAttributes as $attribute) {
            if (isset($attribute['alias']) && $name = $attribute['alias']) {
              $availableCores[$name] = $container->getDefinition($coreId);
            }
          }
        }
        $drupalDriverDefinition->addMethodCall(
          'setCore', array($availableCores)
        );
      }
    }

    $drupalDefinition->addMethodCall(
      'setDefaultDriverName', array($container->getParameter('drupal.drupal.default_driver'))
    );
  }
}