<?php
/*************************************************************************************/
/*                                                                                   */
/*      Thelia	                                                                     */
/*                                                                                   */
/*      Copyright (c) OpenStudio                                                     */
/*	    email : info@thelia.net                                                      */
/*      web : http://www.thelia.net                                                  */
/*                                                                                   */
/*      This program is free software; you can redistribute it and/or modify         */
/*      it under the terms of the GNU General Public License as published by         */
/*      the Free Software Foundation; either version 3 of the License                */
/*                                                                                   */
/*      This program is distributed in the hope that it will be useful,              */
/*      but WITHOUT ANY WARRANTY; without even the implied warranty of               */
/*      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                */
/*      GNU General Public License for more details.                                 */
/*                                                                                   */
/*      You should have received a copy of the GNU General Public License            */
/*	    along with this program. If not, see <http://www.gnu.org/licenses/>.         */
/*                                                                                   */
/*************************************************************************************/

namespace Thelia\Core\Template\Smarty\Plugins;

use Thelia\Core\Template\Smarty\SmartyPluginDescriptor;
use Thelia\Core\Template\Smarty\AbstractSmartyPlugin;
use Thelia\Core\Template\Smarty\Assets\SmartyAssetsManager;
use Thelia\Core\Security\SecurityContext;
use Thelia\Core\Security\Exception\AuthenticationException;

class Security extends AbstractSmartyPlugin
{
	private $securityContext;

	public function __construct(SecurityContext $securityContext)
	{
		$this->securityContext = $securityContext;
	}

    /**
     * Process security check function
     *
     * @param  array $params
     * @param  unknown $smarty
     * @return string no text is returned.
     */
    public function checkAuthFunction($params, &$smarty)
    {
    	// Context: 'front' or 'admin'
   		$context = $this->getNormalizedParam($params, 'context');

   		$this->securityContext->setContext($context);

   		$roles = $this->_explode($this->getParam($params, 'roles'));
   		$permissions = $this->_explode($this->getParam($params, 'permissions'));

   		if (! $this->securityContext->isGranted($roles, $permissions)) {

   			$ex = new AuthenticationException(
   					sprintf("User not granted for roles '%s', permissions '%s' in context '%s'.",
   							implode(',', $roles), implode(',', $permissions), $context
   					)
   			);

   			$loginTpl = $this->getParam($params, 'login_tpl');

   			if (null != $loginTpl) {
   				$ex->setLoginTemplate($loginTpl);
   			}

   			throw $ex;
   		}

   		return '';
     }

    /**
     * Define the various smarty plugins handled by this class
     *
     * @return an array of smarty plugin descriptors
     */
    public function getPluginDescriptors()
    {
        return array(
            new SmartyPluginDescriptor('function', 'check_auth', $this, 'checkAuthFunction')
        );
    }
}

