<?php
    /*********************************************************************************
     * Zurmo is a customer relationship management program developed by
     * Zurmo, Inc. Copyright (C) 2013 Zurmo Inc.
     *
     * Zurmo is free software; you can redistribute it and/or modify it under
     * the terms of the GNU Affero General Public License version 3 as published by the
     * Free Software Foundation with the addition of the following permission added
     * to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED WORK
     * IN WHICH THE COPYRIGHT IS OWNED BY ZURMO, ZURMO DISCLAIMS THE WARRANTY
     * OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
     *
     * Zurmo 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 Affero General Public License for more
     * details.
     *
     * You should have received a copy of the GNU Affero General Public License along with
     * this program; if not, see http://www.gnu.org/licenses or write to the Free
     * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
     * 02110-1301 USA.
     *
     * You can contact Zurmo, Inc. with a mailing address at 27 North Wacker Drive
     * Suite 370 Chicago, IL 60606. or at email address contact@zurmo.com.
     *
     * The interactive user interfaces in original and modified versions
     * of this program must display Appropriate Legal Notices, as required under
     * Section 5 of the GNU Affero General Public License version 3.
     *
     * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
     * these Appropriate Legal Notices must retain the display of the Zurmo
     * logo and Zurmo copyright notice. If the display of the logo is not reasonably
     * feasible for technical reasons, the Appropriate Legal Notices must display the words
     * "Copyright Zurmo Inc. 2013. All rights reserved".
     ********************************************************************************/

    /**
     * Filter used by controllers to ascertain whether
     * any visible models exist for the logged in user. If not, it will display a helpful message.
     */
    class ZeroModelsCheckControllerFilter extends CFilter
    {
        public $controller;

        public $stateMetadataAdapterClassName = null;

        public $zeroModelsYetViewClassName = null;

        public $modelClassName = null;

        public $pageViewClassName = null;

        public $defaultViewUtilClassName = null;

        protected function preFilter($filterChain)
        {
            if (isset($_POST['ajax']))
            {
                return true;
            }

            $modelClassName = $this->modelClassName;

            if ($modelClassName == null)
            {
                $modelClassName    = $this->controller->getModule()->getPrimaryModelName();
            }

            if ($this->stateMetadataAdapterClassName != null)
            {
                $stateClassName       = $this->stateMetadataAdapterClassName;
                $metadata             = array('clauses' => array(), 'structure' => '');
                $stateMetadataAdapter = new $stateClassName($metadata);
                $metadata             = $stateMetadataAdapter->getAdaptedDataProviderMetadata();
                $joinTablesAdapter    = new RedBeanModelJoinTablesQueryAdapter($modelClassName);
                $where                = RedBeanModelDataProvider::makeWhere($modelClassName, $metadata, $joinTablesAdapter);
            }
            else
            {
                $joinTablesAdapter = null;
                $where             = null;
            }
            if ($modelClassName::getCount($joinTablesAdapter, $where) != 0)
            {
                return true;
            }

            $messageViewClassName = $this->getMessageViewClassName();
            if ($messageViewClassName == null)
            {
                $messageViewClassName     = $this->controller->getModule()->getPluralCamelCasedName() . 'ZeroModelsYetView';
            }

            $messageView                  = new $messageViewClassName($this->resolveMessageControllerId(),
                                                                      $this->resolveMessageModuleId(),
                                                                      $modelClassName);
            $this->resolveAndRenderView($messageView);
            return false;
        }

        protected function getMessageViewClassName()
        {
            $messageViewClassName = $this->zeroModelsYetViewClassName;
            if ($messageViewClassName == null)
            {
                $messageViewClassName     = $this->controller->getModule()->getPluralCamelCasedName() . 'ZeroModelsYetView';
            }
            return $messageViewClassName;
        }

        protected function resolveMessageControllerId()
        {
            return $this->controller->getId();
        }

        protected function resolveMessageModuleId()
        {
            return $this->controller->getModule()->getId();
        }

        protected function resolveAndRenderView(View $messageView)
        {
            $pageViewClassName              = $this->pageViewClassName;
            if ($pageViewClassName == null)
            {
                $pageViewClassName          = $this->controller->getModule()->getPluralCamelCasedName() . 'PageView';
            }

            if ($this->defaultViewUtilClassName == null)
            {
                $this->defaultViewUtilClassName = 'ZurmoDefaultViewUtil';
            }

            $defaultViewUtilClassName       = $this->defaultViewUtilClassName;
            $view                           = new $pageViewClassName($defaultViewUtilClassName::
                                                    makeStandardViewForCurrentUser($this->controller, $messageView));
            echo $view->render();
        }
    }
?>