FacebookLinkController.php in Open Social 8

Namespace

Drupal\social_auth_facebook\Controller

File

modules/custom/social_auth_facebook/src/Controller/FacebookLinkController.php

<?php

namespace Drupal\social_auth_facebook\Controller;

use Drupal\Core\Controller\ControllerBase;
use Drupal\social_api\Plugin\NetworkManager;
use Drupal\social_auth_facebook\FacebookAuthManager;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Drupal\user\Entity\User;
use Drupal\Core\Routing\TrustedRedirectResponse;
use Symfony\Component\HttpFoundation\RedirectResponse;

/**
 * Class FacebookLinkController.
 *
 * @package Drupal\social_auth_facebook\Controller
 */
class FacebookLinkController extends ControllerBase {
  protected $networkManager;
  protected $authManager;

  /**
   * FacebookAuthController constructor.
   */
  public function __construct(NetworkManager $network_manager, FacebookAuthManager $auth_manager) {
    $this->networkManager = $network_manager;
    $this->authManager = $auth_manager;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('plugin.network.manager'), $container
      ->get('social_auth_facebook.auth_manager'));
  }

  /**
   * Response for path 'social-api/link/facebook'.
   *
   * Redirects the user to Facebook for joining accounts.
   */
  public function linkAccount() {
    $sdk = $this
      ->getSdk();
    if ($sdk instanceof RedirectResponse) {
      return $sdk;
    }
    $this->authManager
      ->setSdk($sdk);
    $url = $this->authManager
      ->getAuthenticationUrl('link');
    return new TrustedRedirectResponse($url);
  }

  /**
   * Makes joining between account on this site and account on social network.
   *
   * @return \Symfony\Component\HttpFoundation\RedirectResponse
   *   A RedirectResponse pointing to the user edit form.
   */
  public function linkAccountCallback() {
    $sdk = $this
      ->getSdk();
    if ($sdk instanceof RedirectResponse) {
      return $sdk;
    }
    $this->authManager
      ->setSdk($sdk);

    // Get the OAuth token from Facebook.
    if (!$this->authManager
      ->getAccessToken('link')) {
      drupal_set_message($this
        ->t('@network login failed. Token is not valid.', [
        '@network' => $this
          ->t('Facebook'),
      ]), 'error');
      return $this
        ->redirect('entity.user.edit_form', [
        'user' => $this
          ->currentUser()
          ->id(),
      ]);
    }

    // Get user's Facebook profile from Facebook API.
    if (!($profile = $this->authManager
      ->getProfile()) || !($account_id = $profile
      ->getField('id'))) {
      drupal_set_message($this
        ->t('@network login failed, could not load @network profile. Contact site administrator.', [
        '@network' => $this
          ->t('Facebook'),
      ]), 'error');
      return $this
        ->redirect('entity.user.edit_form', [
        'user' => $this
          ->currentUser()
          ->id(),
      ]);
    }

    // Check whether any another user account already connected.
    $account = $this
      ->entityTypeManager()
      ->getStorage('user')
      ->loadByProperties([
      'facebook_id' => $account_id,
    ]);
    $account = current($account);

    // Check whether another account was connected to this Facebook account.
    if ($account && (int) $account
      ->id() !== (int) $this
      ->currentUser()
      ->id()) {
      drupal_set_message($this
        ->t('Your @network account has already connected to another account on this site.', [
        '@network' => $this
          ->t('Facebook'),
      ]), 'warning');
      return $this
        ->redirect('entity.user.edit_form', [
        'user' => $this
          ->currentUser()
          ->id(),
      ]);
    }
    $account = User::load($this
      ->currentUser()
      ->id());
    $account
      ->get('facebook_id')
      ->setValue($account_id);
    $account
      ->save();
    drupal_set_message($this
      ->t('You are now able to log in with @network', [
      '@network' => $this
        ->t('Facebook'),
    ]));
    return $this
      ->redirect('entity.user.edit_form', [
      'user' => $account
        ->id(),
    ]);
  }

  /**
   * Returns the SDK instance or RedirectResponse when error occurred.
   *
   * @return mixed|\Symfony\Component\HttpFoundation\RedirectResponse
   *   Can return an SDK instance or a RedirectResponse to the user edit form.
   */
  public function getSdk() {
    $network_manager = $this->networkManager
      ->createInstance('social_auth_facebook');
    if (!$network_manager
      ->isActive()) {
      drupal_set_message($this
        ->t('@network is disallowed. Contact site administrator.', [
        '@network' => $this
          ->t('Facebook'),
      ]), 'error');
      return $this
        ->redirect('entity.user.edit_form', [
        'user' => $this
          ->currentUser()
          ->id(),
      ]);
    }
    if (!($sdk = $network_manager
      ->getSdk())) {
      drupal_set_message($this
        ->t('@network Auth not configured properly. Contact site administrator.', [
        '@network' => $this
          ->t('Facebook'),
      ]), 'error');
      return $this
        ->redirect('entity.user.edit_form', [
        'user' => $this
          ->currentUser()
          ->id(),
      ]);
    }
    return $sdk;
  }

}

Classes

Name	Description
FacebookLinkController	Class FacebookLinkController.