<?php

/*
 * This file is part of Phraseanet
 *
 * (c) 2005-2012 Alchemy
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

/**
 * Session Authentication Object for guest access
 *
 * @package     Session
 * @license     http://opensource.org/licenses/gpl-3.0 GPLv3
 * @link        www.phraseanet.com
 */
class Session_Authentication_Guest implements Session_Authentication_Interface
{
    /**
     *
     * @var appbox
     */
    protected $appbox;

    /**
     *
     * @var User_Adapter
     */
    protected $user;

    /**
     *
     * @param  appbox                       $appbox
     * @return Session_Authentication_Guest
     */
    public function __construct(appbox &$appbox)
    {
        $this->appbox = $appbox;

        $nonce = random::generatePassword(16);
        $password = random::generatePassword(24);
        $this->user = User_Adapter::create($this->appbox, 'invite', $password, null, false, true);

        return $this;
    }

    /**
     *
     * @return Session_Authentication_Guest
     */
    public function prelog()
    {
        return $this;
    }

    /**
     *
     * @return User_Adapter
     */
    public function get_user()
    {
        return $this->user;
    }

    /**
     *
     * @return User_Adapter
     */
    public function signOn()
    {
        $inviteUsrid = User_Adapter::get_usr_id_from_login('invite');
        $invite_user = User_Adapter::getInstance($inviteUsrid, $this->appbox);

        $usr_base_ids = array_keys($this->user->ACL()->get_granted_base());
        $this->user->ACL()->revoke_access_from_bases($usr_base_ids);

        $invite_base_ids = array_keys($invite_user->ACL()->get_granted_base());
        $this->user->ACL()->apply_model($invite_user, $invite_base_ids);

        return $this->user;
    }

    /**
     *
     * @return Session_Authentication_Guest
     */
    public function postlog()
    {
        \Session_Handler::set_cookie('invite-usr_id', $this->user->get_id(), 0, true);
        return $this;
    }
}