FacebookAuthController.php in Open Social 8.2

Namespace

Drupal\social_auth_facebook\Controller

File

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

<?php

namespace Drupal\social_auth_facebook\Controller;

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

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

  /**
   * Contains access token to work with API.
   *
   * @var string
   */
  protected $accessToken;

  /**
   * 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'));
  }

  /**
   * Returns the redirect response.
   *
   * @param string $type
   *   Type of action. "login" or "register".
   *
   * @return \Drupal\Core\Routing\TrustedRedirectResponse|\Symfony\Component\HttpFoundation\RedirectResponse
   *   Returns a RedirectResponse.
   */
  protected function getRedirectResponse($type) {
    $sdk = $this
      ->getSdk($type);
    if ($sdk instanceof RedirectResponse) {
      return $sdk;
    }
    $this->authManager
      ->setSdk($sdk);
    $url = $this->authManager
      ->getAuthenticationUrl($type);
    return new TrustedRedirectResponse($url);
  }

  /**
   * Response for path 'user/login/facebook'.
   *
   * Redirects the user to FB for authentication.
   */
  public function userLogin() {
    return $this
      ->getRedirectResponse('login');
  }

  /**
   * Authorizes the user after redirect from Facebook.
   *
   * @return \Symfony\Component\HttpFoundation\RedirectResponse
   *   Returns a RedirectResponse.
   */
  public function userLoginCallback() {
    $sdk = $this
      ->getSdk('login');
    if ($sdk instanceof RedirectResponse) {
      return $sdk;
    }
    $this->authManager
      ->setSdk($sdk);
    $profile = $this
      ->getProfile('login');
    if ($profile instanceof RedirectResponse) {
      return $profile;
    }

    // Check whether user account exists.
    $account = $this
      ->entityTypeManager()
      ->getStorage('user')
      ->loadByProperties([
      'facebook_id' => $profile
        ->getField('id'),
    ]);
    if (!$account) {
      return $this
        ->redirect('social_auth_facebook.user_login_notice');
    }
    $account = current($account);
    if (!$account
      ->get('status')->value) {
      drupal_set_message($this
        ->t('Your account is blocked. Contact the site administrator.'), 'error');
      return $this
        ->redirect('user.login');
    }

    // Authorize the user and redirect him to the edit account page.
    user_login_finalize($account);
    $url = $this
      ->getUrlGenerator()
      ->getPathFromRoute('entity.user.canonical', [
      'user' => $account
        ->id(),
    ]);
    \Drupal::request()->query
      ->set('destination', $url);
    return new RedirectResponse($url);
  }

  /**
   * Response for path 'user/register/facebook'.
   *
   * Redirects the user to FB for registration.
   */
  public function userRegister() {
    return $this
      ->getRedirectResponse('register');
  }

  /**
   * Registers the new account after redirect from Facebook.
   *
   * @return \Symfony\Component\HttpFoundation\RedirectResponse
   *   Return a RedirectResponse.
   */
  public function userRegisterCallback() {
    $sdk = $this
      ->getSdk('register');
    if ($sdk instanceof RedirectResponse) {
      return $sdk;
    }
    $this->authManager
      ->setSdk($sdk);
    $profile = $this
      ->getProfile('register');
    if ($profile instanceof RedirectResponse) {
      return $profile;
    }

    // Check whether user account exists. If account already exists,
    // authorize the user and redirect him to the account page.
    $account = $this
      ->entityTypeManager()
      ->getStorage('user')
      ->loadByProperties([
      'facebook_id' => $profile
        ->getField('id'),
    ]);
    if ($account) {
      $account = current($account);
      if (!$account
        ->get('status')->value) {
        drupal_set_message($this
          ->t('You already have account on this site, but your account is blocked. Contact the site administrator.'), 'error');
        return $this
          ->redirect('user.register');
      }
      user_login_finalize($account);
      return $this
        ->redirect('entity.user.canonical', [
        'user' => $account
          ->id(),
      ]);
    }

    // Save email and name to storage to use for auto fill the registration
    // form.
    $data_handler = $this->networkManager
      ->createInstance('social_auth_facebook')
      ->getDataHandler();
    $data_handler
      ->set('access_token', $this->accessToken);
    $data_handler
      ->set('mail', $profile
      ->getField('email'));
    $data_handler
      ->set('name', $profile
      ->getField('name'));
    drupal_set_message($this
      ->t('You are now connected with @network, please continue registration', [
      '@network' => $this
        ->t('Facebook'),
    ]));
    return $this
      ->redirect('user.register', [
      'provider' => 'facebook',
    ]);
  }

  /**
   * Returns the SDK instance or RedirectResponse when error occurred.
   *
   * @param string $type
   *   Type of action, "login" or "register".
   *
   * @return mixed|\Symfony\Component\HttpFoundation\RedirectResponse
   *   Returns an instance of the SDK or a Redirect Response.
   */
  public function getSdk($type) {
    $network_manager = $this->networkManager
      ->createInstance('social_auth_facebook');
    if (!$network_manager
      ->isActive()) {
      drupal_set_message($this
        ->t('@network is disabled. Contact the site administrator', [
        '@network' => $this
          ->t('Facebook'),
      ]), 'error');
      return $this
        ->redirect('user.' . $type);
    }
    if (!($sdk = $network_manager
      ->getSdk())) {
      drupal_set_message($this
        ->t('@network Auth not configured properly. Contact the site administrator.', [
        '@network' => $this
          ->t('Facebook'),
      ]), 'error');
      return $this
        ->redirect('user.' . $type);
    }
    return $sdk;
  }

  /**
   * Loads access token, then loads profile.
   *
   * @param string $type
   *   The type.
   *
   * @return object
   *   Returns an object.
   */
  public function getProfile($type) {

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

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

}

Classes

Name	Description
FacebookAuthController	Class FacebookAuthController.