Core/Modules/admin/classes/class.page_loader.php

<?php
/**
 * FuzeWorks
 *
 * The FuzeWorks MVC PHP FrameWork
 *
 * Copyright (C) 2015   TechFuze
 *
 * 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, or
 * (at your option) any later version.
 *
 * 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/>.
 *
 * @author      TechFuze
 * @copyright   Copyright (c) 2013 - 2015, Techfuze. (http://techfuze.net)
 * @copyright   Copyright (c) 1996 - 2015, Free Software Foundation, Inc. (http://www.fsf.org/)
 * @license     http://opensource.org/licenses/GPL-3.0 GPLv3 License
 * @link        http://fuzeworks.techfuze.net
 * @since       Version 0.0.1
 * @version     Version 0.0.1
 */

namespace Module\Admin;
use \FuzeWorks\Logger;
use \FuzeWorks\Layout;
use \FuzeWorks\Modules;

class PageLoader {

	private static $pageList;
	private static $activePage;
	private static $html;
	private static $breadcrumbs = array();
	private static $title;

	/**
	 * Set the pageList
	 * @param PageList $pageList PageList
	 */
	public static function setPageList($pageList) {
		self::$pageList = $pageList;
	}

	public static function loadPage($matches) {
		// First check if any data is given at all
		Logger::newLevel("Retrieving page from module");
		if (!isset($matches['identifier']) && !isset($matches['page'])) {
			// If nothing is provided, load the dashboard
			Logger::log("No input retrieved. Loading dashboard");
			return self::dashboard();
		} elseif (!isset($matches['identifier']) || !isset($matches['page'])) {
			// If incomplete data is provided, load a 404
			Logger::log("Invalid input retrieved. Loading 404 not found page");
			return self::error404();
		}

		// If enough data is provided, try and load a page
		Logger::log("Input received. Attempting to find page");
		$unique_identifier = $matches['identifier'] . '/' . $matches['page'];
		if (isset(self::$pageList->pages[$unique_identifier])) {
			// Page found, start loading process
			$page = self::$pageList->getPage($unique_identifier);

			// Load the designated module
			$module = Modules::get($page->getModule());

			// Check if it implements the PageRouterInterface
			if (method_exists($module, 'getAdminRouter')) {
				$router = $module->getAdminRouter();

				// Then check if the router is valid, if not, return 500
				if (!$router instanceof PageRouterInterface) {
					Logger::logError("Could not load '".$unique_identifier."' on module '".$page->getModule()."'. ".get_class($router)." does not implement \Module\Admin\PageRouterInterface");
					return self::error500();
				}

				// Route the request into the module
				Logger::log("Input valid and module loaded. Attempting to route request");

				// Generating page object
				$pageObject = new Page();
				$pageObject->setPagePath($matches['page']);
				$pageObject->setSubPath( (isset($matches['subdata']) ? $matches['subdata'] : null) );

				// And send it
				$router->importPage($pageObject);
				$router->route();

				// And retrieve it
				$pageObject = $router->getPage();

				// And retrieve some data
				self::$html = $pageObject->getHtml();
				// $html = $pageObject->getHtml();

				Logger::stopLevel();
				return '';
			} else {
				// Error, router does not exist
				Logger::logError("Could not load '".$unique_identifier."' on module '".$page->getModule()."'. ".get_class($module)." does not implement method getAdminRouter()");
				Logger::stopLevel();
				return self::error500();
			}
		}

		Logger::log("Matching page was not found. Loading 404 not found page");
		Logger::stopLevel();
		return self::error404();


	}

	public static function getHtml() {
		return self::$html;
	}

	public static function getActivePage() {
		return 'fuzeadmin/testPage';
	}

	public static function dashboard() {

	}

	public static function error404() {
		Logger::http_error(404, false);
		return Layout::get('404');
	}

	public static function error500() {
		Logger::http_error(500, false);
		return Layout::get('500');
	}
}

?>