SocialAuthService.php
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<?php namespace Oxbow\Services;
use Laravel\Socialite\Contracts\Factory as Socialite;
use Oxbow\Exceptions\SocialDriverNotConfigured;
use Oxbow\Exceptions\UserNotFound;
use Oxbow\Repos\UserRepo;
class SocialAuthService
{
protected $userRepo;
protected $socialite;
protected $validSocialDrivers = ['google', 'github'];
/**
* SocialAuthService constructor.
* @param $userRepo
* @param $socialite
*/
public function __construct(UserRepo $userRepo, Socialite $socialite)
{
$this->userRepo = $userRepo;
$this->socialite = $socialite;
}
public function logIn($socialDriver)
{
$driver = $this->validateDriver($socialDriver);
return $this->socialite->driver($driver)->redirect();
}
/**
* Get a user from socialite after a oAuth callback.
*
* @param $socialDriver
* @return mixed
* @throws SocialDriverNotConfigured
* @throws UserNotFound
*/
public function getUserFromCallback($socialDriver)
{
$driver = $this->validateDriver($socialDriver);
// Get user details from social driver
$socialUser = $this->socialite->driver($driver)->user();
$user = $this->userRepo->getByEmail($socialUser->getEmail());
// Redirect if the email is not a current user.
if ($user === null) {
throw new UserNotFound('A user with the email ' . $socialUser->getEmail() . ' was not found.', '/login');
}
return $user;
}
/**
* Ensure the social driver is correct and supported.
*
* @param $socialDriver
* @return string
* @throws SocialDriverNotConfigured
*/
private function validateDriver($socialDriver)
{
$driver = trim(strtolower($socialDriver));
if (!in_array($driver, $this->validSocialDrivers)) abort(404, 'Social Driver Not Found');
if (!$this->checklDriverConfigured($driver)) throw new SocialDriverNotConfigured;
return $driver;
}
/**
* Check a social driver has been configured correctly.
* @param $driver
* @return bool
*/
private function checklDriverConfigured($driver)
{
$upperName = strtoupper($driver);
$config = [env($upperName . '_APP_ID', false), env($upperName . '_APP_SECRET', false), env('APP_URL', false)];
return (!in_array(false, $config) && !in_array(null, $config));
}
/**
* Gets the names of the active social drivers.
* @return array
*/
public function getActiveDrivers()
{
$activeDrivers = [];
foreach ($this->validSocialDrivers as $driverName) {
if ($this->checklDriverConfigured($driverName)) {
$activeDrivers[$driverName] = true;
}
}
return $activeDrivers;
}
}