Socialite stateless auth - php

Question

I have a front-end SPA built on Angular 6 and back-end on Laravel 5.6. I'm trying to make a facebook auth using ngx-social-login on the front-end and a Socialite on the back-end.
That is code in my component
signInWithFacebook(): void {
this.sas.signIn(FacebookLoginProvider.PROVIDER_ID).then(
userData => this.as.fb(userData.authToken).subscribe(x => {
console.log(x);
})
);
}
And this is a service
fb(data): Observable<any> {
return this.http.get(this.API_URL, data);
}
And here is my Laravel routes
$api->version('v1', function ($api) {
$api->get('auth/facebook', 'SocialAuthFacebookController#redirectToProvider');
$api->get('auth/facebook/callback', 'SocialAuthFacebookController#callback');
});
That is a controller
public function redirectToProvider()
{
return Socialite::driver('facebook')->stateless()->redirect();
}
public function callback()
{
$user = Socialite::driver('facebook')->stateless()->user();
$authUser = $this->findOrCreateUser($user, 'facebook');
$token = JWTAuth::fromUser($authUser);
return Response::json(compact('token'));
}
public function findOrCreateUser($user, $provider)
{
$authUser = User::where('provider_id', $user->id)->first();
if ($authUser) {
return $authUser;
}
return User::create([
'name' => $user->name,
'email' => $user->email,
'provider' => $provider,
'provider_id' => $user->id
]);
}
Since I'm using Laravel as an API-only so I suppose that I cannot access redirectToProvider so that I tried to call auth/facebook/callback and pass it an authToken that I get after a login on my SPA. However, it doesn't seem to work.
I'm experiencing the next error
Thanks to Facebook there is so much information so that I don't know what's wrong and what to do with it.

Answer 1

Here's an example that might help:
/**
* Redirect the user to the Facebook authentication page.
*
* #return Response
*/
public function redirectToProvider()
{
return Socialite::driver('facebook')->stateless()->redirect();
}
/**
* Obtain the user information from Facebook.
*
* #return JsonResponse
*/
public function handleProviderCallback()
{
$providerUser = Socialite::driver('facebook')->stateless()->user();
$user = User::query()->firstOrNew(['email' => $providerUser->getEmail()]);
if (!$user->exists) {
$user->name = $providerUser->getName();
$user->save();
}
$token = JWTAuth::fromUser($user);
return new JsonResponse([
'token' => $token
]);
}