#concrete5 Force specific authentication type by environment

login.php

<?php
// Put this file on application/controllers/single_page/login.php

namespace Application\Controller\SinglePage;

use Concrete\Core\Routing\RedirectResponse;
use Concrete\Core\Support\Facade\Facade;
use Concrete\Core\Url\Resolver\Manager\ResolverManagerInterface;

class Login extends \Concrete\Controller\SinglePage\Login
{
    /**
     * The name of environment tha you want to force authentication type
     */
    private static $forceEnvironment = 'production';

    /**
     * The handle of authentication type that you want to force users to use
     */
    private static $forceAuthenticationType = 'google';

    public function view($type = null, $element = 'form')
    {
        $response = $this->handleAuthenticationTypeByEnvironment($type);
        if (is_object($response)) {
            return $response;
        }

        return parent::view($type, $element);
    }

    /**
     * Force "google" authentication type on the "production" environment
     *
     * @param $type
     * @return RedirectResponse
     */
    protected function handleAuthenticationTypeByEnvironment($type = '')
    {
        $app = Facade::getFacadeApplication();
        $env = $app->environment();
        /** @var ResolverManagerInterface $resolver */
        $resolver = $app->make(ResolverManagerInterface::class);

        if ($env == self::$forceEnvironment && $type != self::$forceAuthenticationType) {
            return new RedirectResponse($resolver->resolve(['login', self::$forceAuthenticationType]));
        }
    }

    public function authenticate($type = '')
    {
        $response = $this->handleAuthenticationTypeByEnvironment($type);
        if (is_object($response)) {
            return $response;
        }

        return parent::authenticate($type);
    }

    public function session_invalidated()
    {
        $this->flash('error', t('Your session has expired. Please sign in again.'));
        return $this->handleAuthenticationTypeByEnvironment();
    }
}