问Laravel 5认证器

EN

<?php namespace App;

use Illuminate\Contracts\Auth\Authenticator;
use App\Repositories\UserRepository as UserRepository;
use Laravel\Socialite\Contracts\Factory as Socialite;

class AuthenticateUser {

    private $users;
    private $socialite;
    private $auth;
        public function __construct(UserRepository $users, Socialite $socialite, Authenticator $auth)
    {
        $this->users = $users;
        $this->socialite = $socialite;
        $this->auth = $auth;
    }
    public function execute($hasCode)
    {
        if ( ! $hasCode ) return $this->getAuthorisationFirst();

        $user = $this->socialite->drivers('google')->user();

        dd($user);
    }

private function getAuthorisationFirst()
{
    return $this->socialite->driver('google')->redirect();
}

}