Provider.php

<?php

namespace xYundy\L5WebCreatorOAuth;

use Illuminate\Support\Arr;
use SocialiteProviders\Manager\OAuth2\AbstractProvider;
use SocialiteProviders\Manager\OAuth2\User;

class Provider extends AbstractProvider
{
    /**
     * Unique Provider Identifier.
     */
    const IDENTIFIER = 'L5WEBCREATOR';

    /**
     * The scopes being requested.
     *
     * @var array
     */
    protected $scopes = [];

    /**
     * {@inheritdoc}
     */
    protected function getAuthUrl($state)
    {
        return $this->buildAuthUrlFromBase(env('OAUTH_AUTH_URL'), $state);
    }

    /**
     * {@inheritdoc}
     */
    protected function getTokenUrl()
    {
        return env("OAUTH_TOKEN_URL");
    }

    /**
     * {@inheritdoc}
     */
    protected function getUserByToken($token)
    {
        $response = $this->getHttpClient()->get(
            env('OAUTH_USER_TOKEN_URL'), [
            'headers' => [
                'Authorization' => 'Bearer '.$token,
            ],
        ]);

        return json_decode($response->getBody()->getContents(), true);
    }

    /**
     * {@inheritdoc}
     */
    protected function mapUserToObject(array $user)
    {
        return (new User())->setRaw($user)->map(
            [
                'id'       => $user['id'],
                'email'    => $user['email'],
            ]
        );
    }

    /**
     * {@inheritdoc}
     */
    protected function getTokenFields($code)
    {
        return array_merge(parent::getTokenFields($code), [
            'grant_type' => 'authorization_code',
        ]);
    }
}