<?php
/* $Id$ */
(defined('MCMS') && (basename(__FILE__) != basename($_SERVER['PHP_SELF']))) or die('ACCESS DENIED');

use \MCMS\System;
use \MCMS\Plugin\iPlugInContent;
use MCMS\Interfaces\iSystem;
class PlugInMMPIMainContent implements iPlugInContent {

	public function __construct() {
	}
	
	// this method has been created to allow a developer to create implement another switching logic
	protected function getRealName(stdClass $instanceInfo) {
		if(is_null($instanceInfo))
			throw new RuntimeException('no module found for ident ' + $instanceName);
		return $instanceInfo->module;
	}

	public function run(\MCMS\Response &$response, $step, \MCMS\Context $context) {
		if($step == iPlugInContent::STEP_RUN) {
			$system = System::getInstance();
			$db = $system->getDB();
			
			$site = $db->getObject("SELECT * FROM websites WHERE id=" . $system->getSiteId());
			if($site->online == 'offline')
				return;
			
			$instanceName = $system->getTarget('instance');
			if($instanceName == '*')
				return;
			try {
				$allowed = false;
				$info = NULL;
				$cache = System::getContext(iSystem::CTX_CACHE);
				
				if($cache->keyExists($system->getSiteId(), '$p:mcms.mmpimaincontent:modinstinfo', $instanceName)) {
					$info = $cache->get($system->getSiteId(), '$p:mcms.mmpimaincontent:modinstinfo', $instanceName);
				}
				if(empty($info)) {
					$info = $system->getDB()->table('moduleinstances')->getObject(array(
							'instance' => $instanceName,'site_id' => $system->getSiteId()));
					$cache->set($system->getSiteId(), '$p:mcms.mmpimaincontent:modinstinfo', $instanceName, $info, 60);
				}
				
				if(is_null($info) || $info === false)
					throw new RuntimeException('no module found for ident ' . $instanceName);
				
				$usrSvc = $system->getUserSvc();
				$usr = $usrSvc->getUser();
				$realName = $this->getRealName($info);
				
				$installInfo = $system->getDB()->table('installinfo')->getArray(array(
						'type' => 'module','key' => $realName));
				
				$modInfo = getModuleInfo($realName);
				if((!isset($modInfo['noinstall']) || $modInfo['noinstall'] != true) && $installInfo['version'] != $modInfo['version'])
					throw new \Mammut\Exception\IllegalStateException('module "' . $realName . '"needs upgrade, log in as administrator!');
				
				if(!is_null($usr) && $usrSvc->userHasPriv($usr, $system->getSiteId(), false, false))
					$allowed = true;
				else {
					switch($info->visible) {
						case 'all':
							$allowed = true;
						break;
						case 'user':
							if(is_null($usr))
								break;
							$allowed = true;
						break;
						case 'acl':
							if(is_null($usr))
								break;
							if($system->getDB()->table('moduleinstanceacl')->getObject(array(
									'instance' => $instanceName,'site_id' => $system->getSiteId(),
									'account_id' => $usr->getId()))) {
								$allowed = true;
							}
						// TODO: add group support
						// TODO: add timing support
						break;
						case 'none':
						default:
							$response->addError(403, 'Access denied', 'http');
						break;
					}
				}
				
				if($allowed) {
					$classname = loadModule($realName);
					if(class_exists($classname)) {
						$obj = new $classname();
						if($obj instanceof \MCMS\Module\iModule)
							$activeInstance = &$obj;
						else
							throw new \Mammut\Exception\IllegalStateException('class does not define the module interface: ' . $classname);
					}
					else
						throw new \MCMS\Exception\PageNotFoundException('class for module ' . $realName . ' not found');
					$response->setFragment('CONTENT', 'Warning: Module did not fill the CONTENT fragment');
					$response = $activeInstance->handleAction($response);
				}
				else
					$response->setFragment('CONTENT', 'Not found or access denied');
			}
			catch(\RuntimeException $e) {
				if ($e instanceof  \Mammut\Exception\IllegalStateException)
					throw $e;
				if(defined('DEBUG'))
					if($e instanceof \Mammut\IO\IOException)
						$response->addError(500, 'Internal module error: ' . get_class($e) . ': ' . $e->getMessage() . ' [' . $e->getContext() . '] ' . ' @ ' . $e->getFile() . ':' . $e->getLine(), 'http', $e);
					else
						$response->addError(500, 'Internal module error: ' . get_class($e) . ': ' . $e->getMessage() . ' @ ' . $e->getFile() . ':' . $e->getLine(), 'http', $e);
				else
					$response->addError(404, 'Undefined module instance ' . $instanceName, 'http', $e);
			}
		}
	}

	public function __destruct() {
	}
}