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<?php
//  ------------------------------------------------------------------------ //
//                XOOPS - PHP Content Management System                      //
//                    Copyright (c) 2000 XOOPS.org                           //
//                       <http://www.xoops.org/>                             //
//  ------------------------------------------------------------------------ //
//  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 2 of the License, or        //
//  (at your option) any later version.                                      //
//                                                                           //
//  You may not change or alter any portion of this comment or credits       //
//  of supporting developers from this source code or any supporting         //
//  source code which is considered copyrighted (c) material of the          //
//  original comment or credit authors.                                      //
//                                                                           //
//  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, write to the Free Software              //
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA //
//  ------------------------------------------------------------------------ //
// Author: Kazumi Ono (AKA onokazu)                                          //
// URL: http://www.myweb.ne.jp/, http://www.xoops.org/, http://jp.xoops.org/ //
// Project: The XOOPS Project                                                //
// ------------------------------------------------------------------------- //
/**
 * icms_view_PageBuilder component class file
 *
 * @copyright   The ImpressCMS Project <http://www.impresscms.org/>
 * @license     http://www.fsf.org/copyleft/gpl.html GNU public license
 * @category    ICMS
 * @package     Core
 * @subpackage  Template
 *
 * @version     SVN: $Id: PageBuilder.php 12313 2013-09-15 21:14:35Z skenow $
 *
 */
/**
 * This file cannot be requested directly
 */
defined('ICMS_ROOT_PATH') or exit();

/**
 * icms_view_PageBuilder main class
 *
 * @category    ICMS
 * @package     Core
 * @subpackage  Template
 * @author      Skalpa Keo <skalpa@xoops.org>
 * @copyright   Copyright (c) 2000 XOOPS.org
 * @author      Gustavo Pilla (aka nekro) <nekro@impresscms.org>
 */
class icms_view_PageBuilder {

    /** */
    public $theme = FALSE;

    /** */
    public $blocks = array();

    /** */
    private $uagroups = array();

    /** */
    static private $modid;

    /**
     * Initializes the page object and loads all the blocks
     * @param $options
     */
    public function xoInit($options = array()) {
        $this->retrieveBlocks();
        if ($this->theme) {
            $this->theme->template->assign_by_ref('xoBlocks', $this->blocks);
        }
        return TRUE;
    }

    /**
     * Called before a specific zone is rendered
     *
     * @param string $zone
     */
    public function preRender($zone = '') { /* Empty! */ }

    /**
     * Called after a specific zone is rendered
     *
     * @param string $zone
     */
    public function postRender($zone = '') { /* Empty! */ }

    /**
     * Retrieve Blocks for the page and loads their templates
     *
     */
    public function retrieveBlocks() {
        global $xoops, $icmsModule, $icmsConfig;

        $groups = is_object(icms::$user) ? icms::$user->getGroups() : array(ICMS_GROUP_ANONYMOUS);
        self::getPage();
        $modid = self::$modid['module'] . '-' . self::$modid['page'];
        $isStart = self::$modid['isStart'];

        $icms_block_handler = icms::handler('icms_view_block');
        $oldzones = $icms_block_handler->getBlockPositions();

        foreach ($oldzones as $zone) {
            $this->blocks[$zone] = array();
        }
        if ($this->theme) {
            $template =& $this->theme->template;
            $backup = array($template->caching, $template->cache_lifetime);
        } else {
            $template = new icms_view_Tpl();
        }

        /** moved here from buildBlocks to reduce redundant calls */
        $gperm = icms::handler('icms_member_groupperm');
        $ugroups = @is_object(icms::$user) ? icms::$user->getGroups() : array(ICMS_GROUP_ANONYMOUS);
        $agroups = $gperm->getGroupIds('system_admin',  5); //XOOPS_SYSTEM_BLOCK constant not available?
        $this->uagroups = array_intersect($ugroups, $agroups);
        /** End of snippet */

        $block_arr = $icms_block_handler->getAllByGroupModule($groups, $modid, $isStart, XOOPS_BLOCK_VISIBLE);
        // prefetch blocks to reduce the amount of queries required in the later step of rendering
        $tplfile_handler = icms::handler('icms_view_template_file');
        $tplfile_handler->prefetchBlocks($block_arr);
        foreach ($block_arr as $block) {
            $side = $oldzones[$block->getVar('side', 'n')];
            if ($var = $this->buildBlock($block, $template)) {
                $this->blocks[$side][$var["id"]] = $var;
            }
        }
        if ($this->theme) {
            list($template->caching, $template->cache_lifetime) = $backup;
        }
    }

    /**
     * generate the modid (combination of current module and page) and store it in a static var
     * isStart is only needed for this class (used in function retrieveBlocks()).
     *
     * @global array $icmsConfig ImpressCMS configuration array
     * @global icms_module_Object $icmsModule current module
     * @return void
     */
    static public function getPage() {
        global $icmsConfig, $icmsModule;

        if (is_array(self::$modid)) return self::$modid;

        // getting the start module and page configured in the admin panel
        if (is_array($icmsConfig['startpage'])) {
            $member_handler = icms::handler('icms_member');
            $group = $member_handler->getUserBestGroup((is_object(icms::$user) ? icms::$user->getVar('uid') : 0));
            $icmsConfig['startpage'] = $icmsConfig['startpage'][$group];
        }

        $startMod = ($icmsConfig['startpage'] == '--') ? 'system' : $icmsConfig['startpage'];

        // setting the full and relative url of the actual page
        $clean_request = filter_var($_SERVER['REQUEST_URI'], FILTER_SANITIZE_URL);
        $fullurl = icms::$urls['http'] . icms::$urls['httphost'] . $clean_request;
        $url = substr(str_replace(ICMS_URL, '', $fullurl), 1);

        $icms_page_handler = icms::handler('icms_data_page');
        $criteria = new icms_db_criteria_Compo(new icms_db_criteria_Item('page_url', $fullurl));
        if (!empty($url)) $criteria->add(new icms_db_criteria_Item('page_url', $url), 'OR');
        $pages = $icms_page_handler->getCount($criteria);

        if ($pages > 0) {
            // we have a sym-link defined for this page
            $pages = $icms_page_handler->getObjects($criteria);
            $page = $pages[0];
            $purl = filter_var($page->getVar('page_url'), FILTER_SANITIZE_URL);
            $mid = (int) $page->getVar('page_moduleid');
            $pid = $page->getVar('page_id');
            $module_handler = icms::handler('icms_module');
            $module = $module_handler->get($mid);
            $dirname = $module->getVar('dirname');
            $isStart = ($startMod == $mid.'-'.$pid);
        } else {
            // we don't have a sym-link for this page
            if (is_object($icmsModule)) {
                $mid = (int) $icmsModule->getVar('mid');
                $dirname = $icmsModule->getVar('dirname');
                $isStart = (substr($_SERVER['PHP_SELF'], -9) == 'index.php' && $startMod == $dirname);
            } else {
                $mid = 1;
                $dirname = 'system';
                $isStart = !empty($GLOBALS['xoopsOption']['show_cblock']);
            }
            $pid = 0;
        }
/* determine the visitor's start page and update the request based on that? */
        if ($isStart) {
            self::$modid = array('module' => 0, 'page' => 1, 'isStart' => $isStart);
        } else {
            $criteria = new icms_db_criteria_Compo(new icms_db_criteria_Item('page_status', 1));
            $pages = $icms_page_handler->getObjects($criteria);
            $pid = 0;
            foreach ($pages as $page) {
                $purl = filter_var($page->getVar('page_url'), FILTER_SANITIZE_URL);
                if (substr($purl, -1) == '*') {
                    $purl = substr($purl, 0, -1);
                    if (substr($url, 0, strlen($purl)) == $purl || substr($fullurl, 0, strlen($purl)) == $purl) {
                        $pid = $page->getVar('page_id');
                        break;
                    }
                } else {
                    if ($purl == $url || $purl == $fullurl) {
                        $pid = $page->getVar('page_id');
                        break;
                    }
                }
            }
            self::$modid = array('module' => $mid, 'page' => $pid, 'isStart' => $isStart);
        }

        return self::$modid;
    }

    public function generateCacheId($cache_id) {
        if ($this->theme) {
            $cache_id = $this->theme->generateCacheId($cache_id);
        }
        return $cache_id;
    }

    /**
     * The lame type workaround will change
     * bid is added temporarily as workaround for specific block manipulation
     *
     * @param object $xobject
     * @param object $template
     * @return array
     */
    public function buildBlock($xobject, &$template) {
        global $icmsConfigPersona;
        $bid = $xobject->getVar('bid');
        if ($icmsConfigPersona['editre_block'] == TRUE) {
            if (icms::$user && count($this->uagroups) > 0) {
                $url = base64_encode(str_replace(ICMS_URL, '', icms::$urls['http'] . $_SERVER['HTTP_HOST'] . filter_var($_SERVER['REQUEST_URI'], FILTER_SANITIZE_URL)));
                $titlebtns = '&nbsp;<a href="#" onclick="$(\'#ed_block_' . $bid . '\').dialog(\'open\'); return false;"><img src="' . ICMS_IMAGES_SET_URL . '/actions/configure.png" title="' . _EDIT .' '. _BLOCK_ID .' '. $bid .'" alt="' . _EDIT . '"  /></a>'
                    . '<button style="display: none;"><div id="ed_block_' . $bid . '">'
                    . "<a href='" . ICMS_MODULES_URL . "/system/admin.php?fct=blocksadmin&amp;op=visible&amp;bid=" . $bid . "&amp;rtn=$url'> <img src='" . ICMS_IMAGES_SET_URL . "/actions/button_cancel.png' alt='" . _INVISIBLE . "'  /> " . _INVISIBLE . "</a><br />"
                    . "<a href='" . ICMS_MODULES_URL . "/system/admin.php?fct=blocksadmin&amp;op=clone&amp;bid=" . $bid . "'> <img src='" . ICMS_IMAGES_SET_URL . "/actions/editcopy.png' alt='" . _CLONE . "'  /> " . _CLONE . "</a><br />"
                    . "<a href='" . ICMS_MODULES_URL . "/system/admin.php?fct=blocksadmin&amp;op=mod&amp;bid=" . $bid . "'> <img src='" . ICMS_IMAGES_SET_URL . "/actions/edit.png' alt='" . _EDIT . "'  /> " . _EDIT . "</a><br />"
                    . "<a href='" . ICMS_MODULES_URL . "/system/admin.php?fct=blocksadmin&amp;op=up&amp;bid=" . $bid . "&amp;rtn=$url'> <img src='" . ICMS_IMAGES_SET_URL . "/actions/up.png' alt='" . _UP . "'  /> " . _UP . "</a><br />"
                    . "<a href='" . ICMS_MODULES_URL . "/system/admin.php?fct=blocksadmin&amp;op=down&amp;bid=" . $bid . "&amp;rtn=$url'> <img src='" . ICMS_IMAGES_SET_URL . "/actions/down.png' alt='" . _DOWN . "'  /> " . _DOWN . "</a>";
                if ($xobject->getVar('dirname') == '') {
                    $titlebtns .= "<br /><a href='" . ICMS_MODULES_URL . "/system/admin.php?fct=blocksadmin&amp;op=del&amp;bid=" . $bid . "'> <img src='" . ICMS_IMAGES_SET_URL . "/actions/editdelete.png' alt='" . _DELETE . "'  /> " . _DELETE . "</a>";
                }
                $titlebtns .= '</div></button>';
                $titlebtns .= '<script type="text/javascript">
                    $(function() {
                        $(\'#ed_block_' . $bid . '\').dialog({
                            bgiframe: true,
                            //height: 140,
                            autoOpen: false,
                            modal: true
                        });
                    });
                    </script>
                ';
            } else {
                $titlebtns = '';
            }
        } else {
            $titlebtns = '';
        }

        $block = array(
            'id' => $bid,
            'module' => $xobject->getVar('dirname'),
            'title' => $xobject->getVar('title') . $titlebtns,
            'weight' => $xobject->getVar('weight'),
            'lastmod' => $xobject->getVar('last_modified')
        );

        $bcachetime = (int) ($xobject->getVar('bcachetime'));
        //$template = new icms_view_Tpl();
        if (empty($bcachetime)) {
            $template->caching = 0;
        } else {
            $template->caching = 2;
            $template->cache_lifetime = $bcachetime;
        }
        $tplName = ($tplName = $xobject->getVar('template')) ? "db:$tplName" : "db:system_block_dummy.html";
        $cacheid = $this->generateCacheId(
            'blk_' . $xobject->getVar('dirname', 'n') . '_'
            . $bid
        );

        if (! $bcachetime || ! $template->is_cached($tplName, $cacheid)) {
            icms::$logger->addBlock($xobject->getVar('name'));
            if (! ($bresult = $xobject->buildBlock())) {
                return FALSE;
            }
            $template->assign('block', $bresult);
            $block['content'] = $template->fetch($tplName, $cacheid);
        } else {
            icms::$logger->addBlock($xobject->getVar('name'), TRUE, $bcachetime);
            $block['content'] = $template->fetch($tplName, $cacheid);
        }
        return $block;
    }
}