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<?php
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// $Id: class.frontend.php 646 2008-01-30 15:18:39Z thorn $
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/*
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 Website Baker Project <http://www.websitebaker.org/>
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 Copyright (C) 2004-2008, Ryan Djurovich
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 Website Baker is free software; you can redistribute it and/or modify
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 it under the terms of the GNU General Public License as published by
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 the Free Software Foundation; either version 2 of the License, or
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 (at your option) any later version.
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 Website Baker is distributed in the hope that it will be useful,
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 but WITHOUT ANY WARRANTY; without even the implied warranty of
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 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 GNU General Public License for more details.
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 You should have received a copy of the GNU General Public License
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 along with Website Baker; if not, write to the Free Software
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 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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*/
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/*
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Frontend class
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*/
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if(!defined('WB_PATH')) {
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	header('Location: ../index.php');
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	exit(0);
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}
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require_once(WB_PATH.'/framework/class.wb.php');
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class frontend extends wb {
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	// defaults
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	var $default_link,$default_page_id;
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	// when multiple blocks are used, show home page blocks on 
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	// pages where no content is defined (search, login, ...)
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	var $default_block_content=true;
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	// page details
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	// page database row
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	var $page;
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	var $page_id,$page_title,$menu_title,$parent,$root_parent,$level,$visibility;
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	var $page_description,$page_keywords,$page_link;
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	var $page_trail=array();
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	var $page_access_denied;
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	var $page_no_active_sections;
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	// website settings
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	var $website_title,$website_description,$website_keywords,$website_header,$website_footer;
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	// ugly database stuff
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	var $extra_where_sql, $sql_where_language;
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	function page_select() {
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		global $page_id,$no_intro;
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		global $database;
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		// We have no page id and are supposed to show the intro page
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		if((INTRO_PAGE AND !isset($no_intro)) AND (!isset($page_id) OR !is_numeric($page_id))) {
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			// Since we have no page id check if we should go to intro page or default page
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			// Get intro page content
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			$filename = WB_PATH.PAGES_DIRECTORY.'/intro'.PAGE_EXTENSION;
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			if(file_exists($filename)) {
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				$handle = @fopen($filename, "r");
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				$content = @fread($handle, filesize($filename));
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				@fclose($handle);
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				$this->preprocess($content);
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				header("Location: ".WB_URL.PAGES_DIRECTORY."/intro".PAGE_EXTENSION."");   // send intro.php as header to allow parsing of php statements
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				echo ($content);
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				return false;
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			}
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		}
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		// Check if we should add page language sql code
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		if(PAGE_LANGUAGES) {
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			$this->sql_where_language = " AND language = '".LANGUAGE."'";
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		}
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		// Get default page
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		// Check for a page id
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		$query_default = "SELECT page_id,link FROM ".TABLE_PREFIX."pages WHERE parent = '0' AND visibility = 'public'$this->sql_where_language ORDER BY position ASC LIMIT 1";
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		$get_default = $database->query($query_default);
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		$default_num_rows = $get_default->numRows();
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		if(!isset($page_id) OR !is_numeric($page_id)){
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			// Go to or show default page
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			if($default_num_rows > 0) {
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				$fetch_default = $get_default->fetchRow();
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				$this->default_link = $fetch_default['link'];
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				$this->default_page_id = $fetch_default['page_id'];
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				// Check if we should redirect or include page inline
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				if(HOMEPAGE_REDIRECTION) {
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					// Redirect to page
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					header("Location: ".$this->page_link($this->default_link));
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					exit();
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				} else {
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					// Include page inline
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					$this->page_id = $this->default_page_id;
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				}
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			} else {
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		   		// No pages have been added, so print under construction page
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				$this->print_under_construction();
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				exit();
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			}
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		} else {
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			$this->page_id=$page_id;
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		}
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		// Get default page link
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		if(!isset($fetch_default)) {
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		  	$fetch_default = $get_default->fetchRow();
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	 		$this->default_link = $fetch_default['link'];
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			$this->default_page_id = $fetch_default['page_id'];
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		}
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		return true;
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	}
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	function get_page_details() {
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		global $database;
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	    if($this->page_id != 0) {
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			// Query page details
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			$query_page = "SELECT * FROM ".TABLE_PREFIX."pages WHERE page_id = '{$this->page_id}'";
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			$get_page = $database->query($query_page);
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			// Make sure page was found in database
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			if($get_page->numRows() == 0) {
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				// Print page not found message
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				exit("Page not found");
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			}
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			// Fetch page details
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			$this->page = $get_page->fetchRow();
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			// Check if the page language is also the selected language. If not, send headers again.
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			if ($this->page['language']!=LANGUAGE) {
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				header('Location: '.$this->page_link($this->page['link']).'?lang='.$this->page['language']);
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				exit();
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			}
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			// Begin code to set details as either variables of constants
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			// Page ID
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			define('PAGE_ID', $this->page['page_id']);
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			// Page Title
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			define('PAGE_TITLE', $this->page['page_title']);
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			$this->page_title=PAGE_TITLE;
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			// Menu Title
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			$menu_title = $this->page['menu_title'];
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			if($menu_title != '') {
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				define('MENU_TITLE', $menu_title);
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			} else {
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				define('MENU_TITLE', PAGE_TITLE);
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			}
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			$this->menu_title=MENU_TITLE;
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			// Page parent
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			define('PARENT', $this->page['parent']);
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			$this->parent=$this->page['parent'];
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			// Page root parent
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			define('ROOT_PARENT', $this->page['root_parent']);
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			$this->root_parent=$this->page['root_parent'];
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			// Page level
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			define('LEVEL', $this->page['level']);
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			$this->level=$this->page['level'];
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			// Page visibility
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			define('VISIBILITY', $this->page['visibility']);
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			$this->visibility=$this->page['visibility'];
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			// Page trail
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			foreach(explode(',', $this->page['page_trail']) AS $pid) {
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				$this->page_trail[$pid]=$pid;
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			}
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			// Page description
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			$this->page_description=$this->page['description'];
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			if($this->page_description != '') {
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				define('PAGE_DESCRIPTION', $this->page_description);
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			} else {
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				define('PAGE_DESCRIPTION', WEBSITE_DESCRIPTION);
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			}
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			// Page keywords
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			$this->page_keywords=$this->page['keywords'];
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			// Page link
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			$this->link=$this->page_link($this->page['link']);
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		// End code to set details as either variables of constants
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		}
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		// Figure out what template to use
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		if(!defined('TEMPLATE')) {
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			if(isset($this->page['template']) AND $this->page['template'] != '') {
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				if(file_exists(WB_PATH.'/templates/'.$this->page['template'].'/index.php')) {
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					define('TEMPLATE', $this->page['template']);
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				} else {
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					define('TEMPLATE', DEFAULT_TEMPLATE);
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				}
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			} else {
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				define('TEMPLATE', DEFAULT_TEMPLATE);
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			}
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		}
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		// Set the template dir
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		define('TEMPLATE_DIR', WB_URL.'/templates/'.TEMPLATE);
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		// Check if user is allowed to view this page
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		if($this->page && $this->page_is_visible($this->page) == false) {
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			if(VISIBILITY == 'deleted' OR VISIBILITY == 'none') {
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				// User isnt allowed on this page so tell them
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				$this->page_access_denied=true;
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			} elseif(VISIBILITY == 'private' OR VISIBILITY == 'registered') {
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				// Check if the user is authenticated
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				if($this->is_authenticated() == false) {
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					// User needs to login first
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					header("Location: ".WB_URL."/account/login.php?redirect=".$this->link);
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					exit(0);
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				} else {
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					// User isnt allowed on this page so tell them
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					$this->page_access_denied=true;
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				}
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			}
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		}
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		// check if there is at least one active section
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		if($this->page && $this->page_is_active($this->page) == false) {
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			$this->page_no_active_sections=true;
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		}
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	}
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	function get_website_settings() {
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		global $database;
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		// set visibility SQL code
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		// never show no-vis, hidden or deleted pages
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		$this->extra_where_sql = "visibility != 'none' AND visibility != 'hidden' AND visibility != 'deleted'";
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		// Set extra private sql code
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		if($this->is_authenticated()==false) {
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			// if user is not authenticated, don't show private pages either
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			$this->extra_where_sql .= " AND visibility != 'private'";
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			// and 'registered' without frontend login doesn't make much sense!
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			if (FRONTEND_LOGIN==false) {
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				$this->extra_where_sql .= " AND visibility != 'registered'";
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			}
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		}
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		$this->extra_where_sql .= $this->sql_where_language;
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		// Work-out if any possible in-line search boxes should be shown
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		if(SEARCH == 'public') {
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			define('SHOW_SEARCH', true);
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		} elseif(SEARCH == 'private' AND VISIBILITY == 'private') {
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			define('SHOW_SEARCH', true);
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		} elseif(SEARCH == 'private' AND $this->is_authenticated() == true) {
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			define('SHOW_SEARCH', true);
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		} elseif(SEARCH == 'registered' AND $this->is_authenticated() == true) {
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			define('SHOW_SEARCH', true);	
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		} else {
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			define('SHOW_SEARCH', false);
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		}
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		// Work-out if menu should be shown
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		if(!defined('SHOW_MENU')) {
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			define('SHOW_MENU', true);
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		}
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		// Work-out if login menu constants should be set
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		if(FRONTEND_LOGIN) {
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			// Set login menu constants
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			define('LOGIN_URL', WB_URL.'/account/login.php');
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			define('LOGOUT_URL', WB_URL.'/account/logout.php');
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			define('FORGOT_URL', WB_URL.'/account/forgot.php');
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			define('PREFERENCES_URL', WB_URL.'/account/preferences.php');
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			define('SIGNUP_URL', WB_URL.'/account/signup.php');
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		}
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	}
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	function preprocess(&$content) {
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		global $database;
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		// Replace [wblink--PAGE_ID--] with real link
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		$pattern = '/\[wblink(.+?)\]/s';
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		preg_match_all($pattern,$content,$ids);
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		foreach($ids[1] AS $page_id) {
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			$pattern = '/\[wblink'.$page_id.'\]/s';
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			// Get page link
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			$get_link = $database->query("SELECT link FROM ".TABLE_PREFIX."pages WHERE page_id = '$page_id' LIMIT 1");
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			$fetch_link = $get_link->fetchRow();
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			$link = $this->page_link($fetch_link['link']);
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			$content = preg_replace($pattern,$link,$content);
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		}
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	}
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	function menu() {
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		global $wb;
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	   if (!isset($wb->menu_number)) {
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	   	$wb->menu_number = 1;
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	   }
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	   if (!isset($wb->menu_start_level)) {
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	   	$wb->menu_start_level = 0;
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	   }
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	   if (!isset($wb->menu_recurse)) {
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	   	$wb->menu_recurse = -1;
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	   }
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	   if (!isset($wb->menu_collapse)) {
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	   	$wb->menu_collapse = true;
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	   }
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	   if (!isset($wb->menu_item_template)) {
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	   	$wb->menu_item_template = '<li><span[class]>[a] [menu_title] [/a]</span>';
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	   }
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	   if (!isset($wb->menu_item_footer)) {
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	   	$wb->menu_item_footer = '</li>';
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	   }
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	   if (!isset($wb->menu_header)) {
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	   	$wb->menu_header = '<ul>';
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	   }
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	   if (!isset($wb->menu_footer)) {
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	   	$wb->menu_footer = '</ul>';
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	   }
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	   if (!isset($wb->menu_default_class)) {
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	   	$wb->menu_default_class = ' class="menu_default"';
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	   }
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	   if (!isset($wb->menu_current_class)) {
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	   	$wb->menu_current_class = ' class="menu_current"';
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	   }
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	   if (!isset($wb->menu_parent)) {
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	   	$wb->menu_parent = 0;
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	   }
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	   $wb->show_menu();
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	}
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	function show_menu() {
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		global $database;
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		if ($this->menu_start_level>0) {
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			$key_array=array_keys($this->page_trail);
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			if (isset($key_array[$this->menu_start_level-1])) {
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				$real_start=$key_array[$this->menu_start_level-1];
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				$this->menu_parent=$real_start;
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				$this->menu_start_level=0;
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			} else {
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				return;
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			}
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		}
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		if ($this->menu_recurse==0)
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	       return;
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		// Check if we should add menu number check to query
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		if($this->menu_parent == 0) {
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			$menu_number = "menu = '$this->menu_number'";
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		} else {
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			$menu_number = '1';
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		}
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		// Query pages
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		$query_menu = $database->query("SELECT page_id,menu_title,page_title,link,target,level,visibility,viewing_groups,viewing_users FROM ".TABLE_PREFIX."pages WHERE parent = '$this->menu_parent' AND $menu_number AND $this->extra_where_sql ORDER BY position ASC");
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		// Check if there are any pages to show
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		if($query_menu->numRows() > 0) {
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			// Print menu header
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			echo "\n".$this->menu_header;
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			// Loop through pages
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			while($page = $query_menu->fetchRow()) {
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				// check whether to show this menu-link
350
				if($this->page_is_active($page)==false && $page['link']!=$this->default_link && !INTRO_PAGE) {
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					continue; // no active sections
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				}
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				if($this->page_is_visible($page)==false) {
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					if($page['visibility'] != 'registered') // special case: page_to_visible() check wheter to show the page contents, but the menu should be visible allways
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						continue;
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				}
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				// Create vars
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				$vars = array('[class]','[a]', '[/a]', '[menu_title]', '[page_title]');
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				// Work-out class
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				if($page['page_id'] == PAGE_ID) {
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					$class = $this->menu_current_class;
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				} else {
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					$class = $this->menu_default_class;
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				}
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				// Check if link is same as first page link, and if so change to WB URL
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				if($page['link'] == $this->default_link AND !INTRO_PAGE) {
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					$link = WB_URL;
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				} else {
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					$link = $this->page_link($page['link']);
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				}
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				// Create values
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				$values = array($class,'<a href="'.$link.'" target="'.$page['target'].'" '.$class.'>', '</a>', $page['menu_title'], $page['page_title']);
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				// Replace vars with value and print
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				echo "\n".str_replace($vars, $values, $this->menu_item_template);
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				// Generate sub-menu
376
				if($this->menu_collapse==false OR ($this->menu_collapse==true AND isset($this->page_trail[$page['page_id']]))) {
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					$this->menu_recurse--;
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					$this->menu_parent=$page['page_id'];
379
					$this->show_menu();
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				}
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				echo "\n".$this->menu_item_footer;
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			}
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			// Print menu footer
384
			echo "\n".$this->menu_footer;
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		}
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	}
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	// Function to show the "Under Construction" page
390
	function print_under_construction() {
391
		global $MESSAGE;
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		require_once(WB_PATH.'/languages/'.DEFAULT_LANGUAGE.'.php');
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		echo '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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		<head><title>'.$MESSAGE['GENERIC']['WEBSITE_UNDER_CONSTRUCTION'].'</title>
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		<style type="text/css"><!-- body{ font-family: Verdana, Arial, Helvetica, sans-serif;font-size: 12px; background-image: url("admin/interface/background.png");background-repeat: repeat-x; margin: 20px; text-align: center; }
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		h1 { margin: 0; padding: 0; }--></style></head><body>
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		<h1>'.$MESSAGE['GENERIC']['WEBSITE_UNDER_CONSTRUCTION'].'</h1><br />
398
		'.$MESSAGE['GENERIC']['PLEASE_CHECK_BACK_SOON'].'</body></html>';
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	}
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}
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?>
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