LinkedInOpenID.php

<?php
/*!
 * Hybridauth
 * https://hybridauth.github.io | https://github.com/hybridauth/hybridauth
 *  (c) 2017 Hybridauth authors | https://hybridauth.github.io/license.html
 */

namespace Hybridauth\Provider;

use Hybridauth\Adapter\OAuth2;
use Hybridauth\Data;
use Hybridauth\Exception\UnexpectedApiResponseException;
use Hybridauth\User;

/**
 * LinkedIn OAuth2 provider adapter.
 */
class LinkedInOpenID extends OAuth2
{
    /**
     * {@inheritdoc}
     */
    protected $scope = 'openid profile email';

    /**
     * {@inheritdoc}
     */
    protected $apiBaseUrl = 'https://api.linkedin.com/v2/';

    /**
     * {@inheritdoc}
     */
    protected $authorizeUrl = 'https://www.linkedin.com/oauth/v2/authorization';

    /**
     * {@inheritdoc}
     */
    protected $accessTokenUrl = 'https://www.linkedin.com/oauth/v2/accessToken';

    /**
     * {@inheritdoc}
     */
    protected $apiDocumentation = 'https://docs.microsoft.com/en-us/linkedin/shared/authentication/authentication';

    /**
     * {@inheritdoc}
     */
    protected function initialize()
    {
        parent::initialize();

        if ($this->isRefreshTokenAvailable()) {
            $this->tokenRefreshParameters += [
                'client_id' => $this->clientId,
                'client_secret' => $this->clientSecret
            ];
        }
    }

    /**
     * {@inheritdoc}
     */
    public function getUserProfile()
    {

        $response = $this->apiRequest('/userinfo', 'GET', []);
        $data = new Data\Collection($response);

        if (!$data->exists('sub')) {
            throw new UnexpectedApiResponseException('Provider API returned an unexpected response.');
        }

        $userProfile = new User\Profile();

        $userProfile->firstName = $data->get('given_name');
        $userProfile->lastName = $data->get('family_name');
        $userProfile->identifier = $data->get('sub');
        $userProfile->email = $data->get('email');
        $userProfile->emailVerified = $data->get('email_verified');
        $userProfile->displayName = $data->get('name');
        $userProfile->photoURL = $data->get('picture');

        return $userProfile;
    }

}