<?php

/**
 * @file
 * Definition of Drupal\Core\CoreServiceProvider.
 */

namespace Drupal\Core;

use Drupal\Core\Cache\CacheContextsPass;
use Drupal\Core\Cache\ListCacheBinsPass;
use Drupal\Core\DependencyInjection\Compiler\BackendCompilerPass;
use Drupal\Core\DependencyInjection\Compiler\RegisterLazyRouteEnhancers;
use Drupal\Core\DependencyInjection\Compiler\RegisterLazyRouteFilters;
use Drupal\Core\DependencyInjection\Compiler\DependencySerializationTraitPass;
use Drupal\Core\DependencyInjection\Compiler\StackedKernelPass;
use Drupal\Core\DependencyInjection\Compiler\StackedSessionHandlerPass;
use Drupal\Core\DependencyInjection\Compiler\RegisterStreamWrappersPass;
use Drupal\Core\DependencyInjection\ServiceProviderInterface;
use Drupal\Core\DependencyInjection\ContainerBuilder;
use Drupal\Core\DependencyInjection\Compiler\ModifyServiceDefinitionsPass;
use Drupal\Core\DependencyInjection\Compiler\TaggedHandlersPass;
use Drupal\Core\DependencyInjection\Compiler\RegisterKernelListenersPass;
use Drupal\Core\DependencyInjection\Compiler\RegisterAccessChecksPass;
use Drupal\Core\DependencyInjection\Compiler\RegisterServicesForDestructionPass;
use Drupal\Core\Plugin\PluginManagerPass;
use Drupal\Core\Render\MainContent\MainContentRenderersPass;
use Drupal\Core\Site\Settings;
use Symfony\Component\DependencyInjection\Compiler\PassConfig;

/**
 * ServiceProvider class for mandatory core services.
 *
 * This is where Drupal core registers all of its compiler passes.
 * The service definitions themselves are in core/core.services.yml with a
 * few, documented exceptions (typically, install requirements).
 *
 * Modules wishing to register services to the container should use
 * modulename.services.yml in their respective directories.
 *
 * @ingroup container
 */
class CoreServiceProvider implements ServiceProviderInterface  {

  /**
   * {@inheritdoc}
   */
  public function register(ContainerBuilder $container) {
    $this->registerUuid($container);
    $this->registerTest($container);

    // Only register the private file stream wrapper if a file path has been set.
    if (Settings::get('file_private_path')) {
      $container->register('stream_wrapper.private', 'Drupal\Core\StreamWrapper\PrivateStream')
        ->addTag('stream_wrapper', ['scheme' => 'private']);
    }

    // Add the compiler pass that lets service providers modify existing
    // service definitions. This pass must come first so that later
    // list-building passes are operating on the post-alter services list.
    $container->addCompilerPass(new ModifyServiceDefinitionsPass());

    $container->addCompilerPass(new BackendCompilerPass());

    $container->addCompilerPass(new StackedKernelPass());

    $container->addCompilerPass(new StackedSessionHandlerPass());

    $container->addCompilerPass(new MainContentRenderersPass());

    // Collect tagged handler services as method calls on consumer services.
    $container->addCompilerPass(new TaggedHandlersPass());
    $container->addCompilerPass(new RegisterStreamWrappersPass());

    // Add a compiler pass for registering event subscribers.
    $container->addCompilerPass(new RegisterKernelListenersPass(), PassConfig::TYPE_AFTER_REMOVING);

    $container->addCompilerPass(new RegisterAccessChecksPass());
    $container->addCompilerPass(new RegisterLazyRouteEnhancers());
    $container->addCompilerPass(new RegisterLazyRouteFilters());

    // Add a compiler pass for registering services needing destruction.
    $container->addCompilerPass(new RegisterServicesForDestructionPass());

    // Add the compiler pass that will process the tagged services.
    $container->addCompilerPass(new ListCacheBinsPass());
    $container->addCompilerPass(new CacheContextsPass());

    // Register plugin managers.
    $container->addCompilerPass(new PluginManagerPass());

    $container->addCompilerPass(new DependencySerializationTraitPass());
  }

  /**
   * Determines and registers the UUID service.
   *
   * @param \Symfony\Component\DependencyInjection\ContainerBuilder $container
   *   The container.
   *
   * @return string
   *   Class name for the UUID service.
   */
  public static function registerUuid(ContainerBuilder $container) {
    $uuid_class = 'Drupal\Component\Uuid\Php';

    // Debian/Ubuntu uses the (broken) OSSP extension as their UUID
    // implementation. The OSSP implementation is not compatible with the
    // PECL functions.
    if (function_exists('uuid_create') && !function_exists('uuid_make')) {
      $uuid_class = 'Drupal\Component\Uuid\Pecl';
    }
    // Try to use the COM implementation for Windows users.
    elseif (function_exists('com_create_guid')) {
      $uuid_class = 'Drupal\Component\Uuid\Com';
    }

    $container->register('uuid', $uuid_class);
    return $uuid_class;
  }

  /**
   * Registers services and event subscribers for a site under test.
   */
  protected function registerTest(ContainerBuilder $container) {
    // Do nothing if we are not in a test environment.
    if (!drupal_valid_test_ua()) {
      return;
    }
    // Add the HTTP request subscriber to Guzzle.
    $container
      ->register('test.http_client.request_subscriber', 'Drupal\Core\Test\EventSubscriber\HttpRequestSubscriber')
      ->addTag('http_client_subscriber');
  }

}