[concrete5][v8] Simplest authentication type example

controller.php

<?php
namespace Application\Authentication\Example;

use Concrete\Core\Authentication\AuthenticationTypeController;
use Concrete\Core\Authentication\AuthenticationTypeFailureException;
use Concrete\Core\User\User;

class Controller extends AuthenticationTypeController
{
    public function getAuthenticationTypeIconHTML()
    {
        return "<i class='fa fa-bug'></i>";
    }

    public function view()
    {
        // blank
    }

    /**
     * @return string
     */
    public function getHandle()
    {
        return 'example';
    }

    /**
     * Method used to verify the user and log them in.
     * Returning user will cause finishAuthentication to run, otherwise it's expected that the subclass manage completion.
     *
     * @throws AuthenticationTypeFailureException
     *
     * @return \User|null
     */
    public function authenticate()
    {
        $password = $this->post('password');

        // If the password matches
        if ($password == 'foo') {
            $user = User::loginByUserID(1);
        } else {
            throw new \Exception('Invalid password.');
        }

        return $user;
    }

    /**
     * Method used to clean up.
     * This method must be defined, if it isn't needed, leave it blank.
     *
     * @param \User $u
     */
    public function deauthenticate(User $u)
    {
        // blank
    }

    /**
     * Test user authentication status.
     *
     * @param \User $u
     *
     * @return bool Returns true if user is authenticated, false if not
     */
    public function isAuthenticated(User $u)
    {
        return $u->isLoggedIn();
    }

    /**
     * Create a cookie hash to identify the user indefinitely.
     *
     * @param \User $u
     *
     * @return string Unique hash to be used to verify the users identity
     */
    public function buildHash(User $u)
    {
        return '';
    }

    /**
     * Verify cookie hash to identify user.
     *
     * @param        $u User object requesting verification.
     * @param string $hash
     *
     * @return bool returns true if the hash is valid, false if not
     */
    public function verifyHash(User $u, $hash)
    {
        return true;
    }
}

form.php

<?php defined('C5_EXECUTE') or die('Access denied.');
$form = Core::make('helper/form');
/* @var Concrete\Core\Form\Service\Form $form */
?>

<form method="post" action="<?= URL::to('/login', 'authenticate', $this->getAuthenticationTypeHandle()) ?>">

    <div class="form-group">
        <label class="control-label"><?=t('Password')?></label>
        <input name="password" class="form-control" type="password" />
    </div>

    <div class="form-group">
        <button class="btn btn-primary"><?= t('Log in') ?></button>
    </div>

    <?php Core::make('helper/validation/token')->output('login_' . $this->getAuthenticationTypeHandle()); ?>

</form>

// Install
try {
    $type = \Concrete\Core\Authentication\AuthenticationType::getByHandle('example');
} catch (Exception $e) {
    $type = \Concrete\Core\Authentication\AuthenticationType::add('example', 'Example');
}

// Uninstall
try {
    $type = \Concrete\Core\Authentication\AuthenticationType::getByHandle('example');
    $type->delete();
} catch (Exception $e) {
}