use DrupaluserEntityUser;
use SymfonyComponentHttpFoundationRedirectResponse;
use DrupalCoreUrl;


function whishlistt_user_login(DrupaluserUserInterface $account) {

$roles = $account->getRoles();
$user_id = Drupal::currentUser()->id();


if(in_array('test', $roles)){

$query_get_product_name = db_select('mydata', 'c');
$query_get_product_name->fields('c', ['uid']);
$result = $query_get_product_name->execute()->fetchAllAssoc('uid');
if(!empty($result)) {
$path = Url::fromRoute('user.logout', [], ['absolute' => TRUE])->toString();
$response = new RedirectResponse($path);
return $response->send();
}
else {
$connection = Drupal::database();
$result = $connection->insert('mydata')
->fields(['uid'])
->values([
'uid' => $user_id,
])
->execute();
}

}
}

function hook_user_logout($account) {
//to be done
}