<?php
/**
 * Rest Component: Auth
 *
 * $Id$
 *
 * @author gERD Schaufelberger <gerd@php-tools.net>
 * @license PHP License
 * @package WB
 * @subpackage rest
 */

WBClass::load('WBRest_Component'
                , 'WBUser'
            );

/**
 * Rest Component: Auth
 *
 *
 *
 * @version 0.2.0
 * @package WB
 * @subpackage rest
 */
class WBRest_Component_Auth extends WBRest_Component
{
    /**
     * Current user
     * @var WBUser_Auth
     */
    protected $user;

    /**
     * 2nd constructor
     *
     */
    public function init()
    {
        WBClass::load( 'WBUser_Auth' );
        $this->user =   WBUser_Auth::getCurrent();

    }

    /**
     * login user
     *
     * Use "nickname" and "password" to login user
     */
    public function handleLogin()
    {
        if ($this->user->isAuthenticated()) {
            $this->addUserData();
            return;
        }

        $credential                 =   array();
        $this->out['authendicated'] =   0;
        if (!isset($this->in['nickname']) || empty($this->in['nickname'])) {
            $this->error[]  =   array(
                                        'code'      =>  $this->serviceName . ':login:1',
                                        'message'   =>  'Nickname is required but not given or empty'
                                    );
        } else {
            $credential['nickname'] =   $this->in['nickname'];
        }
        if (!isset($this->in['password']) || empty($this->in['password'])) {
            $this->error[]  =   array(
                                        'code'      =>  $this->serviceName . ':login:2',
                                        'message'   =>  'Password is required but not given or empty'
                                    );
        } else {
            $credential['password'] =   $this->in['password'];
        }

        if (count($credential) < 2) {
            $this->status   =   WBRest::STATUS_FAILED;
            return;
        }

        $this->user->login($credential);
        if ($this->user->isAuthenticated()) {
            $this->addUserData();
            return;
        }

        $this->status   =   WBRest::STATUS_FAILED;
        return;
    }

    /**
     * logout user
     *
     * Logout user in case user is authenticated, otherwise do nothing
     */
    public function handleLogout()
    {
        if ($this->user->isAuthenticated()) {
            $this->user->logout();
        }

        $this->out['authendicated'] =   0;
    }

    /**
     * Implement behavour for empty requests
     *
     * either login, logout or display user data
     * @see WBRestComponent::emptyRequest()
     */
    public function emptyRequest()
    {
        // mangle allowed methods
        $this->allowedMethods   =   array(
                                        WBRest::METHOD_GET,
                                        WBRest::METHOD_POST,
                                        WBRest::METHOD_DELETE
                                );

        switch ($this->method) {
            case WBRest::METHOD_POST:
                return $this->handleLogin();
                break;

            case WBRest::METHOD_DELETE:
                return $this->handleLogout();
                break;

            case WBRest::METHOD_GET:
                break;

            default:
                return;
                break;
        }

        $this->addUserData();
    }

    /**
     * inject current user's data to output
     *
     * Check whether user is logged in an add her data
     */
    protected function addUserData()
    {
        $this->out['authendicated'] =   0;
        if (!$this->user->isAuthenticated()) {
            return;
        }

        $this->out['authendicated'] =   1;
        $this->out['id']            =   $this->user->getId();
        $this->out['nickname']      =   $this->user->getNickname();

        $data   =   $this->user->getData();
        $keys   =   array(
                            'forename',
                            'surname',
                            'email',
                            'lang',
                            'created',
                            'changed',
                            'lastlogin'
                        );
        foreach ($keys as $k) {
            $this->out[$k]  =   $data[$k];
        }
    }
}
?>