<?php
// Datenbank-Verbindungsparameter
require_once ('dbutils.php');
require_once ('globals.php');
require_once ('utilities/TypeAndProducts/TypeAndProductFileManager.php');
require_once ('utilities/userrights.php');
require_once ('utilities/HistFiller.php');
require_once ('utilities/basedb.php');
require_once ('utilities/decimaldefs.php');
require_once ('utilities/sorter.php');
require_once ('utilities/Logger.php');
require_once ('utilities/Emailer.php');
require_once ('utilities/version.php');
require_once ('hotelinterface.php');

class Admin {
	var $dbutils;
	var $userrights;
	var $histfiller;
	
	private static $timezone = null;
	
	private static $rights = array(
		"createNewUser"	    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("manager_or_admin")),
		"createNewRole"	    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("manager_or_admin")),
		"updateUser"	    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("manager_or_admin")),
		"updateRole"	    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("manager_or_admin")),
		"deleteUser"	    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("manager_or_admin")),
		"deleteRole"	    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("manager_or_admin")),
		"changepassword"    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("manager_or_admin")),
		"changeConfig"	    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("manager_or_admin")),
		"readlogo"	    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("manager_or_admin")),
		"deletelogo"	    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("manager_or_admin")),
	    
		"getCurrentUser"		    => array("loggedin" => 0, "isadmin" => 0, "rights" => null),
		"tryAuthenticate"		    => array("loggedin" => 0, "isadmin" => 0, "rights" => null),
		"setLastModuleOfUser"		    => array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"getViewAfterLogin"		    => array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"isUserAlreadyLoggedIn"		    => array("loggedin" => 0, "isadmin" => 0, "rights" => null),
		"isLoggedinUserAdmin"		    => array("loggedin" => 0, "isadmin" => 0, "rights" => null),
		"isLoggedinUserKitchen"		    => array("loggedin" => 0, "isadmin" => 0, "rights" => null),
		"isLoggedinUserBar"		    => array("loggedin" => 0, "isadmin" => 0, "rights" => null),
		"isLoggedinUserAdminOrManagerOrTE"  => array("loggedin" => 0, "isadmin" => 0, "rights" => null),
		"hasUserPaydeskRight"		    => array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"getJsonMenuItemsAndVersion"	    => array("loggedin" => 0, "isadmin" => 0, "rights" => null),
		"getUserList"			    => array("loggedin" => 0, "isadmin" => 0, "rights" => null),
		"getRoleList"			    => array("loggedin" => 0, "isadmin" => 0, "rights" => null),
		"setTime"			    => array("loggedin" => 1, "isadmin" => 1, "rights" => null),
		"changeOwnPassword"		    => array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		
		"setUserLanguage"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"setUserReceiptPrinter"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"setBtnSize"			=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"getGeneralConfigItems"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
	        "getGeneralConfigItemsAndUsers" => array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"getWaiterSettings"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"getPayPrintType"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"getPayments"			=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"autobackup"			=> array("loggedin" => 0, "isadmin" => 0, "rights" => null),
		"autoftpbackup"			=> array("loggedin" => 0, "isadmin" => 0, "rights" => null),
		"shutdown"			=> array("loggedin" => 1, "isadmin" => 1, "rights" => null),
		"optimize"			=> array("loggedin" => 1, "isadmin" => 1, "rights" => null),
		"ftpbackup"			=> array("loggedin" => 1, "isadmin" => 1, "rights" => null),
		"backup"			=> array("loggedin" => 1, "isadmin" => 1, "rights" => null),
		"restore"			=> array("loggedin" => 1, "isadmin" => 1, "rights" => null),
		"restoreDemoFromZip"		=> array("loggedin" => 0, "isadmin" => 0, "rights" => null),
		"golive"			=> array("loggedin" => 1, "isadmin" => 1, "rights" => null),
		"drop"				=> array("loggedin" => 1, "isadmin" => 1, "rights" => null),
		"fill"				=> array("loggedin" => 1, "isadmin" => 1, "rights" => null),
		"fillSpeisekarte"		=> array("loggedin" => 1, "isadmin" => 1, "rights" => null),
		"assignTaxes"			=> array("loggedin" => 1, "isadmin" => 1, "rights" => null),
		"getDbStat"			=> array("loggedin" => 1, "isadmin" => 1, "rights" => null),
		
		"exportConfigCsv"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => array("manager_or_admin")),
		"exportUserCsv"			=> array("loggedin" => 1, "isadmin" => 0, "rights" => array("manager_or_admin")),
		"exportLog"			=> array("loggedin" => 1, "isadmin" => 0, "rights" => array("manager_or_admin")),
		"setOrderVolume"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"setPreferTableMap"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"setKeepTypeLevel"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
	        "setMobileTheme"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"setApplyExtrasBtnPos"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"setTablesAfterSend"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"setPreferimgdesk"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"setPreferimgmobile"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
	        "setPrefershowplusminus"	=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"setPreferfixbtns"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"getOrderVolume"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"getButtonSizes"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"getPreferTableMap"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"getKeepTypeLevel"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
	        "getMobileTheme"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"getApplyExtrasBtnPos"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
	        "getTablesAfterSend"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"getPreferimgdesk"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"getPreferimgmobile"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"getPrefershowplusminus"	=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"getPreferfixbtns"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"isInstalled"			=> array("loggedin" => 0, "isadmin" => 0, "rights" => null),
	    
		"isPrinterServerActive"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"getWaiterMessage"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"getmobilecss"			=> array("loggedin" => 0, "isadmin" => 0, "rights" => null),
	    
		"getprinterinstances"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => array("manager_or_admin")),
		"setprinterinstances"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => array("manager_or_admin")),
	    
		"getdashreports"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => array("dash")),
	        "getDailycode"			=> array("loggedin" => 1, "isadmin" => 0, "rights" => null)
	    );
	
	
	function __construct() {
		$this->dbutils = new DbUtils();
		$this->userrights = new Userrights();
		$this->histfiller = new HistFiller();
	}
	
	
	private static function checkRights($command) {
	    if(session_id() == '') {
	    	session_start();
	    }
	    if (!array_key_exists($command, self::$rights)) {
		echo json_encode(array("status" => "ERROR", "code" => ERROR_COMMAND_NOT_FOUND, "msg" => ERROR_COMMAND_NOT_FOUND_MSG));
		return false;
	    }
	    $cmdRights = self::$rights[$command];
	    if ($cmdRights["loggedin"] == 1) {
		if (!isset($_SESSION['angemeldet']) || !$_SESSION['angemeldet']) {
			echo json_encode(array("status" => "ERROR", "code" => ERROR_NOT_AUTHOTRIZED, "msg" => ERROR_NOT_AUTHOTRIZED_MSG));
			return false;
		}
	    }
	    if ($cmdRights["isadmin"] == 1) {
		if (!isset($_SESSION['angemeldet']) || !$_SESSION['angemeldet']) {
			echo json_encode(array("status" => "ERROR", "code" => ERROR_NOT_AUTHOTRIZED, "msg" => ERROR_NOT_AUTHOTRIZED_MSG));
			return false;
		} else {
		    if ($_SESSION['is_admin'] == false) {
			echo json_encode(array("status" => "ERROR", "code" => ERROR_COMMAND_NOT_ADMIN, "msg" => ERROR_COMMAND_NOT_ADMIN_MSG));
			return false;
		    }
		}
	    }
	    if (!is_null($cmdRights["rights"])) {
		foreach($cmdRights["rights"] as $aRight) {
		    if ($aRight == 'manager_or_admin') {
			if (($_SESSION['is_admin']) || ($_SESSION['right_manager'])) {
			    return true;
			}
		    } else if ($aRight == 'dash') {
			if ($_SESSION['right_dash']) {
			    return true;
			}
		    }
		}
		echo json_encode(array("status" => "ERROR", "code" => ERROR_NOT_AUTHOTRIZED, "msg" => ERROR_NOT_AUTHOTRIZED_MSG));
		return false;
	    }
	    return true;
	}
	
	function handleCommand($command) {
	    if (!self::checkRights($command)) {
		return false;
	    }

	    if ($command == 'tryAuthenticate') {
		    $this->tryAuthenticate($_POST['userid'],$_POST['password'],$_POST['modus'],$_POST['day'],$_POST['month'],$_POST['year'],$_POST['hour'],$_POST['minute'],$_POST["time"]);
	    } else if ($command == 'setLastModuleOfUser') {
		    $this->setLastModuleOfUser($_POST['view']);
	    } else if ($command == 'getViewAfterLogin') {
		    $this->getViewAfterLogin();
	    } else if ($command == 'isUserAlreadyLoggedIn') {
		    $this->isUserAlreadyLoggedIn();
	    } else if ($command == 'logout') {
		    $this->logout();
	    } else if ($command == 'getCurrentUser') {
		    $this->getCurrentUser();
	    } else if ($command == 'isLoggedinUserAdmin') {
		    $this->isLoggedinUserAdmin();
	    } else if ($command == 'isLoggedinUserKitchen') {
		    $this->isLoggedinUserKitchen();
	    } else if ($command == 'isLoggedinUserBar') {
		    $this->isLoggedinUserBar();
	    } else if ($command == 'isLoggedinUserAdminOrManagerOrTE') {
		    $this->isLoggedinUserAdminOrManagerOrTE();
	    } else if ($command == 'hasUserPaydeskRight') {
		    $this->hasUserPaydeskRight();
	    } else if ($command == 'getJsonMenuItemsAndVersion') {
		    $this->getJsonMenuItemsAndVersion();
	    } else if ($command == 'getUserList') {
		    $this->getUserList();
	    } else if ($command == 'getRoleList') {
		    $this->getRoleList();
	    } else if ($command == 'setTime') {
		    $this->setTime($_POST['day'],$_POST['month'],$_POST['year'],$_POST['hour'],$_POST['minute']);
	    } else if ($command == 'createNewUser') {
		    $this->createNewUser();
	    } else if ($command == 'createNewRole') {
		    $this->createNewRole();
	    } else if ($command == 'updateUser') {
		    $this->updateUser();
	    } else if ($command == 'updateRole') {
		    $this->updateRole();
	    } else if ($command == 'deleteUser') {
		    $this->deleteUser($_POST['userid']);
	    } else if ($command == 'deleteRole') {
		    $this->deleteRole($_POST['roleid']);
	    } else if ($command == 'changepassword') {
		    $this->changepassword($_POST['userid'],$_POST['password']);
	    } else if ($command == 'changeOwnPassword') {
		    $this->changeOwnPassword($_POST['oldPass'],$_POST['newPass']);
	    } else if ($command == 'setUserLanguage') {
		    $this->setUserLanguage($_POST['language']);
	    } else if ($command == 'setUserReceiptPrinter') {
		    $this->setUserReceiptPrinter($_POST['printer']);
	    } else if ($command == 'setBtnSize') {
		    $this->setBtnSize($_POST['btn'],$_POST['size']);
	    } else if ($command == 'changeConfig') {
		    $this->changeConfig($_POST['changed']);
	    } else if ($command == 'readlogo') {
		    $this->readlogo();
	    } else if ($command == 'deletelogo') {
		    $this->deletelogo();
	    } else if ($command == 'getGeneralConfigItems') {
		    $this->getGeneralConfigItems(true,null);
	    } else if ($command == 'getGeneralConfigItemsAndUsers') {
		    $this->getGeneralConfigItemsAndUsers(true,null);
	    } else if ($command == 'getWaiterSettings') {
		    $this->getWaiterSettings();
	    // from here on admin rights are needed
	    } else if ($command == 'getPayPrintType') {
		    $this->getPayPrintType();
	    } else if ($command == 'getPayments') {
		    $this->getPayments();
	    } else if ($command == 'autobackup') {
		    $this->backup('auto',$_POST['remoteaccesscode']);
	    } else if ($command == 'autoftpbackup') {
		    $this->ftpbackup('auto',$_POST['remoteaccesscode']);
	    } else if ($command == 'fill') {
		    $this->fillSampleContent();
		    echo json_encode(array("status" => "OK"));
	    } else if ($command == 'fillSpeisekarte') {
		    $this->fillSpeisekarte($_POST['speisekarte']);
	    } else if ($command == 'backup') {
		    $this->backup($_GET['type'],null);
		    return;
	    } else if ($command == 'ftpbackup') {
		    $this->ftpbackup($_GET['type'],null);
		    return;
	    } else if ($command == 'restore') {
		    $this->restore();
		    return;
	    } else if ($command == 'restoreDemoFromZip') {
		    $pdo = DbUtils::openDbAndReturnPdoStatic();
		    $this->restoreDemoFromZip($pdo);
		    return;
	    } else if ($command == 'golive') {
		    $this->golive();
		    return;
	    } else if ($command == 'shutdown') {
		    $this->shutdown();
		    return;
	    } else if ($command == 'optimize') {
		    $this->optimize();
		    return;
	    } else if ($command == 'assignTaxes') {
		    $this->assignTaxes($_POST['food'],$_POST['drinks']);
		    return;
	    } else if ($command == 'exportConfigCsv') {
		    if ($this->isCurrentUserAdmin() || $this->hasCurrentUserRight('right_manager')) {
			    $this->exportConfigCsv();
		    }
	    } else if ($command == 'exportUserCsv') {
		    if ($this->isCurrentUserAdmin() || $this->hasCurrentUserRight('right_manager')) {
			    $this->exportUserCsv();
		    }
	    } else if ($command == 'exportLog') {
		    if ($this->isCurrentUserAdmin() || $this->hasCurrentUserRight('right_manager')) {
			    $this->exportLog();
		    }
	    } else if ($command == 'setOrderVolume') {
		    if ($this->isUserAlreadyLoggedInForPhp()) {
			    $this->setOrderVolume($_POST['volume']);
		    }
	} else if ($command == 'setPreferTableMap') {
		if ($this->isUserAlreadyLoggedInForPhp()) {
			$this->setPreferTableMap($_POST['prefertablemap']);
		}
	} else if ($command == 'setPreferimgdesk') {
		if ($this->isUserAlreadyLoggedInForPhp()) {
			$this->setPreferimgdesk($_POST['preferredvalue']);
		}
	} else if ($command == 'setPreferimgmobile') {
		if ($this->isUserAlreadyLoggedInForPhp()) {
			$this->setPreferimgmobile($_POST['preferredvalue']);
		} 
	} else if ($command == 'setPrefershowplusminus') {
		if ($this->isUserAlreadyLoggedInForPhp()) {
			$this->setShowplusminus($_POST['preferredvalue']);
		}
	} else if ($command == 'setPreferfixbtns') {
		if ($this->isUserAlreadyLoggedInForPhp()) {
			$this->setPreferfixbtns($_POST['preferredvalue']);
		}
	} else if ($command == 'setKeepTypeLevel') {
		    if ($this->isUserAlreadyLoggedInForPhp()) {
			    $this->setKeepTypeLevel($_POST['keeptypelevel']);
		    }
	    } else if ($command == 'setMobileTheme') {
		    if ($this->isUserAlreadyLoggedInForPhp()) {
			    $this->setMobileTheme($_POST['mobiletheme']);
		    }
	    } else if ($command == 'setApplyExtrasBtnPos') {
		    if ($this->isUserAlreadyLoggedInForPhp()) {
			    $this->setExtrasApplyBtnPos($_POST['applyextrasbtnpos']);
		    }
	    } else if ($command == 'setTablesAfterSend') {
		    if ($this->isUserAlreadyLoggedInForPhp()) {
			    $this->setTablesAfterSend($_POST['tablesaftersend']);
		    }
	    } else if ($command == 'getOrderVolume') {
		    if ($this->isUserAlreadyLoggedInForPhp()) {
			    $this->getOrderVolume();
		    }
	    } else if ($command == 'getButtonSizes') {
		    if ($this->isUserAlreadyLoggedInForPhp()) {
			    $this->getButtonSizes();
		    }
	    } else if ($command == 'getPreferTableMap') {
		    if ($this->isUserAlreadyLoggedInForPhp()) {
			    $this->getPreferTableMap();
		    }
		} else if ($command == 'getPreferimgdesk') {
		    if ($this->isUserAlreadyLoggedInForPhp()) {
			    $this->getPreferimgdesk();
		    }
		} else if ($command == 'getPreferimgmobile') {
		    if ($this->isUserAlreadyLoggedInForPhp()) {
			    $this->getPreferimgmobile();
		} 
	    } else if ($command == 'getPrefershowplusminus') {
		if ($this->isUserAlreadyLoggedInForPhp()) {
			$this->getShowplusminus();
		}
	    } else if ($command == 'getPreferfixbtns') {
		    if ($this->isUserAlreadyLoggedInForPhp()) {
			    $this->getPreferfixbtns();
		    }
	    } else if ($command == 'getKeepTypeLevel') {
		    if ($this->isUserAlreadyLoggedInForPhp()) {
			    $this->getKeepTypeLevel();
		    }
	    } else if ($command == 'getmobilecss') {
		    $this->getmobilecss();
	    } else if ($command == 'getMobileTheme') {
		    if ($this->isUserAlreadyLoggedInForPhp()) {
			    $this->getMobileTheme();
		    }
	    } else if ($command == 'getApplyExtrasBtnPos') {
		    if ($this->isUserAlreadyLoggedInForPhp()) {
			    $this->getApplyExtrasBtnPos();
		    }
	    } else if ($command == 'getTablesAfterSend') {
		    if ($this->isUserAlreadyLoggedInForPhp()) {
			    $this->getTablesAfterSend();
		    }
	    } else if ($command == 'isInstalled') {
		    $this->isInstalled();
	    } else if ($command == 'isPrinterServerActive') {
			$this->isPrinterServerActive();
	    } else if ($command == 'getWaiterMessage') {
		    $this->getWaiterMessage();
	    } else if ($command == 'getDbStat') {
		    $this->getDbStat();
	    } else if ($command == 'getprinterinstances') {
		    $this->getPrinterInstances();
	    } else if ($command == 'setprinterinstances') {
		    $this->setprinterinstances($_POST["k1"],$_POST["k2"],$_POST["k3"],$_POST["k4"],$_POST["k5"],$_POST["k6"],$_POST["f1"],$_POST["f2"],$_POST["d1"],$_POST["d2"]);
	    } else if ($command == 'getdashreports') {
		    $this->getdashreports();
	    } else if ($command == 'getDailycode') {
		    $this->getDailycode();
	    }
	    else {
		    echo "Command not supported.";
	    }
	}

	
	/***
	 * Is the installation already done? Or was the html/php code overwritten, i.e. a new or updated version to install?
	 */
	private function isInstalled() {
		if(defined('INSTALLSTATUS')){
			if (INSTALLSTATUS == 'new') {
				echo json_encode("No");
			} else {
				echo json_encode("Yes");
			}
		} else {
			echo json_encode("No");
		}
	}
	
	private function isPrinterServerActive() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		Hotelinterface::hs3sync($pdo);
		
		Guestsync::sync($pdo);
		
		
		$tasksForMe = Tasks::areThereTasksForMe($pdo);
		
		
	    $TIMEOUT = 40;
	    $active = json_encode(array("status" => "OK","msg" => 1, "tasksforme" => $tasksForMe));
	    $notActive = json_encode(array("status" => "OK","msg" => 0, "tasksforme" => $tasksForMe));
	    // check printmode
	    
	    $printMode = CommonUtils::getConfigValue($pdo, 'payprinttype', "s");
	    if ($printMode != "s") {
		echo $active;
		return;
	    }
	    
	    $sql = "SELECT count(id) as countid FROM %work% WHERE item=?";
	    $stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
	    $stmt->execute(array('lastprtserveraccess'));
	    $row = $stmt->fetchObject();
	    if ($row->countid == 0) {
		echo $notActive;
	    } else {
		$sql = "SELECT value FROM %work% WHERE item=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array('lastprtserveraccess'));
		$row = $stmt->fetchObject();
		$lastaccess = $row->value;
		
		date_default_timezone_set(DbUtils::getTimeZone());
		$date = new DateTime();
		$currentTimeStamp = $date->getTimestamp();
		
		if (($currentTimeStamp - $lastaccess) > $TIMEOUT) {
		    echo $notActive;
		} else {
		    echo $active;
		}
	    }
	}
	
	function isUserAlreadyLoggedInForPhp() {
		if(session_id() == '') {
			session_start();
		}
		if (!isset($_SESSION['angemeldet']) || !$_SESSION['angemeldet']) {
			return false;
		} else {
			return true;
		}
	}

	function isUserAlreadyLoggedIn() {
		if(session_id() == '') {
	    	session_start();
		}
		if (!isset($_SESSION['angemeldet']) || !$_SESSION['angemeldet']) {
			echo json_encode("NO");
		} else {
			echo json_encode("YES");
		}
	}
	
	function logout() {
		if(session_id() == '') {
			session_start();
			session_destroy();
		}
		echo json_encode("OK");
	}
	
	static function isOnlyRatingUser($rightArr,$right_rating,$comparisonVal) {
		foreach($rightArr as $aRight) {
			if ($aRight == $comparisonVal) {
				return false;
			}
		}
		
		if ($right_rating == $comparisonVal) {
			return true;
		} else {
			return false;
		}
	}
	
	function tryAuthenticate($userid,$password,$modus,$day,$month,$year,$hour,$minute,$unixtime) {
		
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$authenticated = false;
		
		$isLoginAllowed = self::checkIsLoginAllowed($pdo,$userid);
		if (!$isLoginAllowed) {
			Logger::logcmd("admin","authentication","Login with id $userid failed");
			echo json_encode(array("status" => "WAIT"));
			return;
		}
		
		
		$sql = "SELECT *,%user%.id as id FROM %user%,%roles% WHERE %user%.id=? AND active='1' AND %user%.roleid=%roles%.id";
		$result = CommonUtils::fetchSqlAll($pdo, $sql, array($userid));

		$numberOfEntries = count($result);
		if ($numberOfEntries == 1) {
			$zeile = $result[0];
			$pass_hash = $zeile['userpassword'];

			if ($zeile['is_admin'] == 0) {
				// authentication-check
			}
			
			// password_verify requires PHP > 5.5, so let's use MD5 instead
			// (it is no banking software...)
			if (md5($password) == $pass_hash) {
				$authenticated = true;
			}
		}
		
		
		if ($authenticated) {
			date_default_timezone_set(DbUtils::getTimeZone());
			$now = getdate();
			
			$serverDay = $now["mday"];
			$serverMonth = $now["mon"];
			$serverYear = $now["year"];
			$serverHour = $now["hours"];
			$serverMinute = $now["minutes"];
			$serverTime = $now["0"];
			$timeDiff = 0;
			if (abs($serverTime - $unixtime) > (60*60*2)) {
				$timeDiff = 1;
			}

			ini_set('session.gc_maxlifetime',65535);
			session_set_cookie_params(65535);
			
			if(session_id() == '') {
				session_start();
			}
			$username = $zeile["username"];
			
			$_SESSION['angemeldet'] = true;
			 

			$_SESSION['userid'] = $zeile['id'];
			$_SESSION['currentuser'] = $username;
			$_SESSION['modus'] = $modus;
			
			
			$workflow = $this->getConfigItemsAsString($pdo, "workflowconfig");
			
			$rights = array($zeile['is_admin'],$zeile['right_waiter'],$zeile['right_kitchen'],
					$zeile['right_bar'],$zeile['right_supply'],$zeile['right_paydesk'],
					$zeile['right_statistics'],$zeile['right_bill'],$zeile['right_products'],
					$zeile['right_reservation'],$zeile['right_changeprice'],$zeile['right_customers'],$zeile['right_manager'],
					$zeile['right_closing'],$zeile['right_dash'],$zeile['right_timetracking'],$zeile['right_timemanager'],
					$zeile['right_tasks'],$zeile['right_tasksmanagement']);
			$right_rating = $zeile['right_rating'];
			
			if (self::isOnlyRatingUser($rights,$right_rating, 1)) {
				$_SESSION['right_rating'] = true;
				
				$_SESSION['is_admin'] = false;
				$_SESSION['right_waiter'] = false;
				$_SESSION['right_kitchen'] = false;
				$_SESSION['right_bar'] = false;
				$_SESSION['right_supply'] = false;
				$_SESSION['right_paydesk'] = false;
				$_SESSION['right_statistics'] = false;
				$_SESSION['right_bill'] = false;
				$_SESSION['right_products'] = false;
				$_SESSION['right_reservation'] = false;
				$_SESSION['right_changeprice'] = false;
				$_SESSION['right_customers'] = false;
				$_SESSION['right_manager'] = false;
				$_SESSION['right_closing'] = false;
				$_SESSION['right_dash'] = false;
				$_SESSION['right_timetracking'] = false;
				$_SESSION['right_timemanager'] = false;
				$_SESSION['right_tasks'] = false;
				$_SESSION['right_tasksmanagement'] = false;
				$_SESSION['keeptypelevel'] = false;
			} else {
				$_SESSION['is_admin'] = ($zeile['is_admin'] == 1 ? true : false);
				$_SESSION['right_waiter'] = ($zeile['right_waiter'] == 1 ? true : false);
				if (($workflow == 2) || ($workflow == 3)) {
					$_SESSION['right_kitchen'] = false;
					$_SESSION['right_bar'] = false;
					$_SESSION['right_supply'] = false;
				} else {
					$_SESSION['right_kitchen'] = ($zeile['right_kitchen'] == 1 ? true : false);
					$_SESSION['right_bar'] = ($zeile['right_bar'] == 1 ? true : false);
					$_SESSION['right_supply'] = ($zeile['right_supply'] == 1 ? true : false);
				}
				$_SESSION['right_paydesk'] = ($zeile['right_paydesk'] == 1 ? true : false);
				$_SESSION['right_statistics'] = ($zeile['right_statistics'] == 1 ? true : false);
				$_SESSION['right_bill'] = ($zeile['right_bill'] == 1 ? true : false);
				$_SESSION['right_products'] = ($zeile['right_products'] == 1 ? true : false);
				$_SESSION['right_reservation'] = ($zeile['right_reservation'] == 1 ? true : false);
				$_SESSION['right_rating'] = ($zeile['right_rating'] == 1 ? true : false);
				$_SESSION['right_changeprice'] = ($zeile['right_changeprice'] == 1 ? true : false);
				$_SESSION['right_customers'] = ($zeile['right_customers'] == 1 ? true : false);
				$_SESSION['right_manager'] = ($zeile['right_manager'] == 1 ? true : false);
				$_SESSION['right_closing'] = ($zeile['right_closing'] == 1 ? true : false);
				$_SESSION['right_dash'] = ($zeile['right_dash'] == 1 ? true : false);
				$_SESSION['right_timetracking'] = ($zeile['right_timetracking'] == 1 ? true : false);
				$_SESSION['right_timemanager'] = ($zeile['right_timemanager'] == 1 ? true : false);
				$_SESSION['right_tasks'] = ($zeile['right_tasks'] == 1 ? true : false);
				$_SESSION['right_tasksmanagement'] = ($zeile['right_tasksmanagement'] == 1 ? true : false);
				
				$_SESSION['keeptypelevel'] = ($zeile['keeptypelevel'] == 1 ? true : false);
			}
			
			$this->userrights->setSession($_SESSION['is_admin'], $_SESSION['right_waiter'], $_SESSION['right_kitchen'],
					$_SESSION['right_bar'], $_SESSION['right_supply'], $_SESSION['right_paydesk'], $_SESSION['right_statistics'],
					$_SESSION['right_bill'], $_SESSION['right_products'], $_SESSION['right_reservation'], $_SESSION['right_rating'],
					$_SESSION['right_changeprice'], $_SESSION['right_customers'],$_SESSION['right_manager'], $_SESSION['right_closing'],
					$_SESSION['right_dash'],$_SESSION['right_timetracking'],$_SESSION['right_timemanager']);
			
			$assoc = array ("0" => "roombtnsize","1" => "tablebtnsize","2" => "prodbtnsize");
			
			$_SESSION["roombtnsize"] = $zeile['roombtnsize'];
			$_SESSION["tablebtnsize"] = $zeile['tablebtnsize'];
			$_SESSION["prodbtnsize"] = $zeile['prodbtnsize'];
			
			$language = $zeile['language'];
			if (is_null($language)) {
				$language = 0;
			}
			$_SESSION['language'] = intval($language);
			
			$receiptprinter = $zeile['receiptprinter'];
			if (is_null($receiptprinter)) {
				$receiptprinter = 1;
			}
			$_SESSION['receiptprinter'] = intval($receiptprinter);
			
			$preferTm = $zeile['prefertablemap'];
			if (is_null($preferTm)) {
				$preferTm = 1;
			}
			$_SESSION['prefertm'] = intval($preferTm);
			
			$pdo = DbUtils::openDbAndReturnPdoStatic();
			$_SESSION['timezone'] = $this->getTimeZone($pdo);
		}
		
		if ($authenticated) {
			Logger::logcmd("admin","authentication","Login $username successful");
			self::clearFailedLogins($pdo, $userid);
			$loginMessage = $this->getMessage(null,'loginmessage');
			echo json_encode(array("status" => "YES","loginmessage" => $loginMessage, "timediff" => $timeDiff, "isadmin" => $zeile['is_admin'],"lang" => $_SESSION["language"]));
		} else {
			Logger::logcmd("admin","authentication","Login with id $userid failed");
			self::increaseFailedLogins($pdo,$userid);
			
			echo json_encode(array("status" => "NO"));
		}
	}
	
	private static function checkIsLoginAllowed($pdo,$userid) {
		date_default_timezone_set(DbUtils::getTimeZone());
		$now = getdate();
		$serverTime = $now["0"];
		
		$sql = "SELECT failedlogins FROM %user% WHERE id=?";
		$row = CommonUtils::getRowSqlObject($pdo, $sql, array($userid));
		if (is_null($row) || is_null($row->failedlogins)) {
			return true;
		} else {
			$lastFailure = explode("_",$row->failedlogins)[0];
			$attempt = intval(explode("_",$row->failedlogins)[1]);
			
			if ($attempt >= 5) {
				if (abs($serverTime - $lastFailure) > (60*3)) {
					self::clearFailedLogins($pdo, $userid);
					return true;
				} else {
					return false;
				}
			} else {
				return true;
			}
		}
	}
	
	private static function increaseFailedLogins($pdo,$userid) {
		date_default_timezone_set(DbUtils::getTimeZone());
		$now = getdate();
		$serverTime = $now["0"];
		$lastFailure = (string) $serverTime . "_";
			
		$sql = "SELECT failedlogins FROM %user% WHERE id=?";
		$row = CommonUtils::getRowSqlObject($pdo, $sql, array($userid));
		if (is_null($row) || is_null($row->failedlogins)) {
			$lastFailure .= "1";
		} else {
			$attempt = intval(explode("_",$row->failedlogins)[1]);
			$lastFailure .= ($attempt + 1); 
		}
		$sql = "UPDATE %user% SET failedlogins=? WHERE id=?";
		CommonUtils::execSql($pdo, $sql, array($lastFailure,$userid));
	}
	
	private static function clearFailedLogins($pdo,$userid) {
		$sql = "UPDATE %user% SET failedlogins=? WHERE id=?";
		CommonUtils::execSql($pdo, $sql, array(null,$userid));
	}
	
	private function getMessage($pdo,$messageType) {
		if (is_null($pdo)) {
			$pdo = DbUtils::openDbAndReturnPdoStatic();
		}
		$sql = "SELECT value FROM %work% WHERE item=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($messageType));
		$row = $stmt->fetchObject();
		$msg = "";
		if ($stmt->rowCount() > 0) {
			$msg = $row->value;
		}
		return $msg;
	}
	
	function getButtonSizes() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		echo json_encode(self::getButtonSizesCore($pdo));
	}
	
	private static function getButtonSizesCore($pdo) {
		$userid = $_SESSION['userid'];
			
		$sql = "SELECT roombtnsize,tablebtnsize,prodbtnsize FROM %user% WHERE id=?";
	
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($userid));
		$row =$stmt->fetchObject();
	
		$roombtnsize = $row->roombtnsize;
		if (is_null($roombtnsize)) {
			$roombtnsize = 0;
		}
	
		$tablebtnsize = $row->tablebtnsize;
		if (is_null($tablebtnsize)) {
			$tablebtnsize = 0;
		}
	
		$prodbtnsize = $row->prodbtnsize;
		if (is_null($prodbtnsize)) {
			$prodbtnsize = 0;
		}
	
		return(array("roombtnsize" => $roombtnsize,"tablebtnsize" => $tablebtnsize,"prodbtnsize" => $prodbtnsize));
	}
	
	private static function getUserValue($item,$defaultvalue) {
		$userid = $_SESSION['userid'];
			
		$sql = "SELECT $item AS result FROM %user% WHERE id=?";
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		
		$stmt = $pdo->prepare(Dbutils::substTableAlias($sql));
		$stmt->execute(array($userid));
		if ($stmt->rowCount() == 0) {
			return $defaultvalue;
		}
		$row = $stmt->fetchObject();
		$aVal = 0;
		if ($row != null) {
			$aVal = $row->result;
			if ($aVal == null) {
				$aVal = $defaultvalue;
			}
		}
		
		echo json_encode($aVal);
	}
	
	function getPreferTableMap() {
		self::getUserValue('prefertablemap',1);
	}
	
	function getPreferimgdesk() {
		self::getUserValue('preferimgdesk', 0);
	}
	function getPreferimgmobile() {
		self::getUserValue('preferimgmobile', 0);
	}
	function getShowplusminus() {
		echo json_encode(self::getUserValueAllowNull("showplusminus"));
	}
	function getPreferfixbtns() {
		echo json_encode(self::getUserValueAllowNull("preferfixbtns"));
	}
	public static function getUserValueAllowNull($col) {
		$userid = $_SESSION['userid'];
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$sql = "SELECT IFNULL($col,0) AS result FROM %user% WHERE id=?";
		$row = CommonUtils::getRowSqlObject($pdo, $sql, array($userid));
		$pdo = null;
		return $row->result;
	}
	function getKeepTypeLevel() {
		self::getUserValue('keeptypelevel',1);
	}
	
	private function getUsersMobileTheme($pdo) {
		if (isset($_SESSION['userid'])) {
			$userid = $_SESSION['userid'];
			$sql = "SELECT mobiletheme FROM %user% WHERE id=?";
			$res = CommonUtils::fetchSqlAll($pdo, $sql, array($userid));
			if (count($res) > 0) {
				return $res[0]["mobiletheme"];
			} else {
				return 0;
			}
		}
		return 0;
	}
	
	function getmobilecss() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$mobileTheme = $this->getUsersMobileTheme($pdo);
		
		$cssFile = "orderstyle.min.css";
		$cssAppend = ".opentable { color:black;} .timeline { color:black;}";
		$cssFile = "orderstyle.min.css";
		if ($mobileTheme == 1) {
			$cssFile = "orderstyle-pale.min.css";
			$cssAppend = ".opentable { color:black;} .timeline { color:black;}";
		} else if ($mobileTheme == 2) {
			$cssFile = "orderstyle-darksoul.min.css";
			$cssAppend = ".opentable { color:white;} .timeline { color:black;}";
		}

		$file = "3rdparty/orderstyle/$cssFile";
		
		header('Content-type: text/css');
    
		readfile($file);
		echo $cssAppend;
	}
	
	function getMobileTheme() {
		self::getUserValue('mobiletheme', 0);
	}
	
	function getApplyExtrasBtnPos() {
		self::getUserValue('extrasapplybtnpos', 1);
	}
	
	function getTablesAfterSend() {
		self::getUserValue('tablesaftersend', 1);
	}
	function getOrderVolume() {
		self::getUserValue('ordervolume',0);
	}
	
	private static function setUserValue($item,$theValue) {
		$userid = $_SESSION['userid'];
			
		$sql = "UPDATE %user% SET $item=? WHERE id=?";
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$pdo->beginTransaction();
			
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($theValue,$userid));
		$pdo->commit();
		echo json_encode(array("status" => "OK"));
	} 
	function setOrderVolume($volume) {
		self::setUserValue('ordervolume', $volume);
	}
	function setPreferTableMap($preferValue) {
		self::setUserValue('prefertablemap',$preferValue);
	}
	function setPreferimgdesk($preferValue) {
		if ($preferValue == 0) {
			$preferValue = null;
		}
		self::setUserValue('preferimgdesk',$preferValue);
	}
	function setPreferimgmobile($preferValue) {
		if ($preferValue == 0) {
			$preferValue = null;
		}
		self::setUserValue('preferimgmobile',$preferValue);
	}
	function setShowplusminus($preferValue) {
		if ($preferValue == 0) {
			$preferValue = null;
		}
		self::setUserValue('showplusminus',$preferValue);
	}
	function setPreferfixbtns($preferValue) {
		if ($preferValue == 0) {
			$preferValue = null;
		}
		self::setUserValue('preferfixbtns',$preferValue);
	}
	function setKeepTypeLevel($preferValue) {
		self::setUserValue('keeptypelevel',$preferValue);
	}
	function setMobileTheme($preferValue) {
		self::setUserValue('mobiletheme', $preferValue);
	}
	function setExtrasApplyBtnPos($preferValue) {
		self::setUserValue('extrasapplybtnpos',$preferValue);
	}
	function setTablesAfterSend($preferValue) {
		if ($preferValue == 1) {
			$preferValue = null;
		}
		self::setUserValue('tablesaftersend',$preferValue);
	}
	function setLastModuleOfUser($view) {
		if ($this->isUserAlreadyLoggedInForPhp()) {
			if ($view != "logout.php") {
				$userid = $_SESSION['userid'];
				
				$questPos = strpos($view,'?');
				if ($questPos != false) {
					$view = substr($view,0,$questPos);
				}
				
				$sql = "UPDATE %user% SET lastmodule=? WHERE id=? AND active='1'";
				$pdo = $this->dbutils->openDbAndReturnPdo();
				
				$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
				$stmt->execute(array($view,$userid));
			}
			echo json_encode(array("status" => "OK"));
		} else {
			echo json_encode(array("status" => "Error","msg" => "Benutzer nicht eingeloggt"));
		}
	}
	
	public function getConfigItemsAsString($pdo,$key) {
		$sql = "SELECT setting FROM %config% WHERE name=?";
		
		if (is_null($pdo)) {
			return "";
		}
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute(array($key));
		$row = $stmt->fetchObject();

		if ($stmt->rowCount() == 0) {
			return "";
		}
		
		$theValue = $row->setting;
		
		if (is_null($theValue)) {
			return "";
		} else {
			return $theValue; 
		}
	}	
	
	public static function overruleTimeZone($timezone) {
		self::$timezone = $timezone;
		DbUtils::overruleTimeZone($timezone);
	}
	
	public function getTimeZone($pdo) {
		if (is_null(self::$timezone)) {
			$timezone = $this->getConfigItemsAsString($pdo, "timezone");
			if ($timezone == "") {
				$timezone = "Europe/Berlin";
			}
			return $timezone;
		} else {
			return self::$timezone;
		}
	}
	public function getEnv($pdo) {
		$installdate = $this->getConfigItemsAsString($pdo, "installdate");
		$lastupdate = $this->getConfigItemsAsString($pdo, "lastupdate");
		$version = $this->getConfigItemsAsString($pdo, "version");
		return(array("version" => $version, "installdate" => $installdate, "lastupdate" => $lastupdate));
	}
	
	private function getWaiterSettings() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$userLoggedIn = $this->isUserAlreadyLoggedInForPhp();
		if (!$userLoggedIn) {
			$retVal = array("isUserLoggedIn" => 0);
			echo json_encode($retVal);
			return;
		}

		$configItems = join(",",array("'decpoint'","'version'","'cancelunpaidcode'","'tax'","'togotax'","'taxaustrianormal'","'taxaustriaerm1'","'taxaustriaerm2'","'taxaustriaspecial'","'currency'","'workflowconfig'","'prominentsearch'","'discount1'","'discount2'","'discount3'","'discountname1'","'discountname2'","'discountname3'","'waitergopayprint'","'cashenabled'","'returntoorder'","'restaurantmode'","'startprodsearch'","'priceinlist'","'showdaycode'","'dailycode'","'showtogo'"));
		$sql = "select name,setting FROM %config% WHERE name in ($configItems)";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute();
		$configitems = $stmt->fetchAll();
		
		$configresult = array();
		foreach($configitems as $item) {
			$configresult[$item["name"]] = $item["setting"];
		}
		
		$userlang = 0;
		$right_changeprice = 0;
		$supplyRight = 0;
		if ($userLoggedIn) {
			$sql = "SELECT language,right_supply,right_changeprice,keeptypelevel,extrasapplybtnpos,right_paydesk,IFNULL(preferimgdesk,0) as preferimgdesk,IFNULL(preferimgmobile,0) as preferimgmobile,IFNULL(showplusminus,0) as showplusminus,IFNULL(preferfixbtns,0) as preferfixbtns,IFNULL(tablesaftersend,1) as tablesaftersend FROM %user%,%roles% WHERE %user%.id=? AND %user%.roleid=%roles%.id";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
			$stmt->execute(array($_SESSION['userid']));
			$row = $stmt->fetchObject();
		}

		$buttonSizes = self::getButtonSizesCore($pdo);
		
		$jsonMenuItems = $this->getJsonMenuItemsAndVersionCore($pdo);
		
		$retVal = array("config" => $configresult,
				"rightchangeprice" => $row->right_changeprice,
				"rightpaydesk" => $row->right_paydesk,
				"supplyright" => $row->right_supply,
				"userlanguage" => $row->language,
				"buttonsizes" => $buttonSizes,
				"keeptypelevel" => $row->keeptypelevel,
				"extrasapplybtnpos" => $row->extrasapplybtnpos,
				"tablesaftersend" => $row->tablesaftersend,
				"isUserLoggedIn" => 1,
				"jsonMenuItemsAndVersion" => $jsonMenuItems,
				"preferimgdesk" => $row->preferimgdesk,
				"preferimgmobile" => $row->preferimgmobile,
				"showplusminus" => $row->showplusminus,
				"preferfixbtns" => $row->preferfixbtns
		);
		echo json_encode($retVal);
	}
	
	
	private function getGeneralConfigItemsAndUsers($forHtml,$pdo) {
		return $this->getGeneralConfigItems($forHtml, $pdo, true);
	}
	
	public function getGeneralConfigItems($forHtml,$pdo,$includeUserInfo = false) {
		$userLoggedIn = $this->isUserAlreadyLoggedInForPhp();
		if ($userLoggedIn || (!$forHtml)) {
			
			$items = array(
			    array("companyinfo",null,false),
			    array("hosttext",null,false),
			    array("rectemplate",null,false),
			    array("foodtemplate",null,false),
			    array("drinktemplate",null,false),
			    array("canceltemplate",null,false),
			    array("decpoint",null,false),
			    array("version",null,false),
			    array("payprinttype",null,false),
			    array("cancelunpaidcode",null,false),
			    
			    array("cancelguestcode",null,false),
			    array("tax",null,false),
			    array("togotax",null,false),
			    array("taxaustrianormal",null,false),
			    array("taxaustriaerm1",null,false),
			    array("taxaustriaerm2",null,false),
			    array("taxaustriaspecial",null,false),
			    array("serverurl",null,false),
			    array("guesturl",null,false),
			    array("guestcode",null,false),
			    array("dailycode",null,false),
			    
			    array("email",null,false),
			    array("bigfontworkreceipt",null,false),
			    array("prominentsearch",null,false),
			    array("guestjobprint",null,false),
			    array("askdaycode",null,false),
			    array("showdaycode",null,false),
			    array("asktablecode",null,false),
			    array("guesttimeout",5,false),
			    array("discount1",null,false),
			    array("discount2",null,false),
			    array("discount3",null,false),
			    array("austria",null,false),
			    array("digigopaysetready",1,false),
			    array("waitergopayprint",0,false),
			    array("oneprodworkrecf",0,false),
			    array("oneprodworkrecd",0,false),
			    array("digiprintwork",1,false),
			    array("groupworkitemsf",1,false),
			    array("groupworkitemsd",1,false),
			    array("receiveremail","",false),
			    array("smtpsecure",1,false),
			    array("smtpauth",1,false),
			    
			    array("emailbadrating","",false),
			    array("emailratingcontact","",false),
			    array("billlanguage",null,false),
			    array("hotelinterface",0,false),
			    array("hsinfile",null,false),
			    array("hsoutfile",null,false),
			    array("hscurrency",null,false),
			    array("currency",null,false),
			    array("receiptfontsize",null,false),
			    array("reservationnote",null,false),
			    
			    array("paymentconfig",0,false),
			    array("workflowconfig",0,false),
			    array("dashslot1",1,false),
			    array("dashslot2",2,false),
			    array("dashslot3",3,false),
			    array("addreceipttoprinter","",false),
			    array("printandqueuejobs",0,false),
			    array("cashenabled",1,false),
			    array("returntoorder",1,false),
			    array("beepcooked",0,false),
			    array("beepordered",0,false),
			    array("taskallassign",0,false),
			    array("taskifempty",0,false),
			    array("taskownerempty",0,false),
			    array("showtogo",1,false),
			    
			    array("closshowci",1,false),
			    array("closshowpaytaxes",1,false),
			    array("closshowprods",1,false),
			    array("showpayment2",1,false),
			    array("showpayment3",1,false),
			    array("showpayment4",1,false),
			    array("showpayment5",1,false),
			    array("showpayment6",1,false),
			    array("showpayment7",1,false),
			    array("showpayment8",1,false),
			    array("restaurantmode",1,false),
			    array("defaultview",0,false),
			    array("dblog",1,false),
			    array("printextras",0,false),
			    array("forceprint",0,false),
			    array("priceinlist",0,false),
			    array("startprodsearch",3,false),
			    
			    array("discountname1","",true),
			    array("discountname2","",true),
			    array("discountname3","",true),
			    
			    array("memorylimit",256,false),
			    array("minbeforecome",0,false),
			    array("minaftergo",0,false),
			    array("updateurl","",false),
			    array("tmpdir","",false),
			    array("hs3refresh",60,false),
			    array("paydeskid","",false),
			    array("aeskey","",false),
			    
			    array("certificatesn","",false),
			    array("rksvserver","",false),
			    array("webimpressum","",false),
			    array("showprepinwaiter",1,false),
			    
			    array("pollbills",2,false),
			    array("pollworksf",2,false),
			    array("pollworksd",2,false),
			    array("pollclosings",2,false)
			);
			
			if (is_null($pdo)) {
				$pdo = $this->dbutils->openDbAndReturnPdo();
			}
			
			$sql = "SELECT count(id) as countid FROM %config% WHERE name=?";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
	    
			$retVal = array();
			foreach($items as $anItem) {
				$v = CommonUtils::getConfigValueStmt($pdo, $stmt, $anItem[0], $anItem[1]);
				if ($anItem[2]) {
					$v = trim($v);
				}
				$retVal[$anItem[0]] = $v;
			}


			$smtphost = "";
			$smtpuser = "";
			$smtppass = "";
			$smtpport = "";
			
			$ftphost = "";
			$ftpuser = "";
			$ftppass = "";
		
			if ( (isset($_SESSION['is_admin']) && ($_SESSION['is_admin'] == 1)) || (isset($_SESSION['right_manager']) && ($_SESSION['right_manager']))) {
			    $smtphost = CommonUtils::getConfigValueStmt($pdo,$stmt,"smtphost","");
			    $smtpuser = CommonUtils::getConfigValueStmt($pdo,$stmt,"smtpuser","");
			    $smtppass = CommonUtils::getConfigValueStmt($pdo,$stmt,"smtppass","");
			    $smtpport = CommonUtils::getConfigValueStmt($pdo,$stmt,"smtpport","");
			    
			    $ftphost = CommonUtils::getConfigValueStmt($pdo,$stmt,"ftphost","");
			    $ftpuser = CommonUtils::getConfigValueStmt($pdo,$stmt,"ftpuser","");
			    $ftppass = CommonUtils::getConfigValueStmt($pdo,$stmt,"ftppass","");
			}
			
			
			$userlang = 0; // of no interest, if not called from web
			$receiptprinter = 1; // of no interest, if not called from web
			$right_changeprice = 0;
			if ($userLoggedIn) {
				$userlang = $_SESSION["language"];
				$receiptprinter = $_SESSION['receiptprinter'];
				$right_changeprice = ($_SESSION['right_changeprice'] ? 1 : 0);
			}
			
			$defaultTmp = sys_get_temp_dir();
			
			date_default_timezone_set(DbUtils::getTimeZone());
			$now = getdate();
			
			$retVal["userlanguage"] = $userlang;
			$retVal["receiptprinter"] = $receiptprinter;
			$retVal["rightchangeprice"] = $right_changeprice;
			
			$retVal["sday"] = $now["mday"];
			$retVal["smonth"] = $now["mon"];
			$retVal["syear"] = $now["year"];
			$retVal["shour"] = $now["hours"];
			$retVal["smin"] = $now["minutes"];
			
			$retVal["smtphost"] = $smtphost;
			$retVal["smtpuser"] = $smtpuser;
			$retVal["smtppass"] = $smtppass;
			$retVal["smtpport"] = $smtpport;
			
			$retVal["ftphost"] = $ftphost;
			$retVal["ftpuser"] = $ftpuser;
			$retVal["ftppass"] = $ftppass;
			
			$retVal["defaulttmp"] = $defaultTmp;
			
			$taskownerempty = $retVal["taskownerempty"];
			if ($taskownerempty == "") {
				$taskownerempty = 0;
			}
			if (is_null($taskownerempty)) {
				$taskownerempty = 0;
			}
			$sql = "SELECT active FROM %user% WHERE id=?";
			$result = CommonUtils::fetchSqlAll($pdo, $sql,array($taskownerempty));
			if (count($result) > 0) {
				$active = $result[0]["active"];
				if ($active != 1) {
					$taskownerempty = 0;
				}
			}
			
			$retVal["taskownerempty"] = $taskownerempty;
			
			if ($includeUserInfo) {
				$sql = "SELECT U.id as id,username,is_admin,right_manager FROM %user% U,%roles% R WHERE active='1' ";
				$sql .= " AND U.roleid=R.id AND (R.right_tasks=? OR R.right_tasksmanagement=?) ";
				$sql .= " ORDER BY is_admin,right_manager";
				$activeUsers = CommonUtils::fetchSqlAll($pdo, $sql,array(1,1));
				$retVal["activeusers"] = $activeUsers;
			}
			
			if ($forHtml) {
				echo json_encode(array("status" => "OK", "msg" => $retVal));
			} else {
				return $retVal;
			}
		} else {
			if ($forHtml) {
				echo json_encode(array("status" => "ERROR", "code" => ERROR_NOT_AUTHOTRIZED, "msg" => ERROR_NOT_AUTHOTRIZED_MSG));
			} else {
				return null;
			}
		}
	}
	
	function getViewAfterLogin() {
		if ($this->isUserAlreadyLoggedInForPhp()) {
			$userid = $_SESSION['userid'];
			$modus = $_SESSION['modus'];
			
			$rights = array($_SESSION['is_admin'],$_SESSION['right_waiter'],$_SESSION['right_kitchen'],
					$_SESSION['right_bar'],$_SESSION['right_supply'],$_SESSION['right_paydesk'],
					$_SESSION['right_statistics'],$_SESSION['right_bill'],$_SESSION['right_products'],
					$_SESSION['right_reservation'],$_SESSION['right_changeprice'],$_SESSION['right_customers'],
					$_SESSION['right_manager'],$_SESSION['right_closing'],$_SESSION['right_dash']);
			$right_rating = $_SESSION['right_rating'];
			
			if (self::isOnlyRatingUser($rights, $right_rating, true)) {
				echo json_encode("rating.html");
				return;
			}
			
			$sql = "SELECT lastmodule FROM %user% WHERE id=? AND active='1'";
			$pdo = $this->dbutils->openDbAndReturnPdo();
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute(array($userid));
			$row =$stmt->fetchObject();
			
			$view = "preferences.html";
			if ($row != null) {
				$newView = $row->lastmodule;
				if ($newView != null) {
					$view = $newView;
					
					if ($modus == 1) {
					    if ($view == "waiter.html") {
						$view = "waiterdesktop.php";
					    } else if ($view == "paydesk.html") {
						$view = "waiterdesktop.php";
					    }
					} else {
					    if ($view == "waiterdesktop.php") {
						$view = "waiter.html";
					    }
					}
				}
			}
			
			$mapping = array (
					"waiter.html" => 'right_waiter',
					"kitchen.html" => 'right_kitchen',
					"bar.html" => 'right_bar',
					"supplydesk.html" => 'right_supply',
					"paydesk.html" => 'right_paydesk',
					"reports.html" => 'right_statistics',
					"bill.html" => 'right_bill',
					"products.html" => 'right_products',
					"reservation.html" => 'right_reservation',
					"rating.html" => 'right_rating',
					"customers.html" => 'right_customers',
					"waiterdesktop.php" => 'right_waiter',
					"dash.php" => 'right_dash',
					"timetracking.html" => 'right_timetracking',
					"tasks.html" => 'right_tasks'
					);
			
			$valid = false;
			if (($view == 'preferences.html') || ($view == 'feedback.html') || ($view == 'help.php')) {
				$valid = true;
			} else if ($view == 'manager.html') {
				if (($_SESSION['is_admin']) || ($_SESSION['right_manager']) || ($_SESSION['right_closing'])) {
					$valid = true;
				}
			} else {
				if (($view == "index.html") ||  ($_SESSION[$mapping[$view]])) {
					$valid = true;
				}
			}
			if ($valid == false) {
				$view = "preferences.html";
			}
			
			echo json_encode($view . "?v=1.5.6");
		}
	}
	
	function isLoggedinUserAdmin() {
		if ($this->isCurrentUserAdmin()) {
			echo json_encode(YES);
		} else {
			echo json_encode(NO);
		}
	}
	
//	public static function startsWith($txt,$key) {
//	    $ret = (substr($txt, 0, strlen($key)) === $key);
//	    return (substr($txt, 0, strlen($key)) === $key);
//	}
	
    function isLoggedinUserAdminOrManagerOrTE() {
	if ($this->hasCurrentUserRight('is_admin')) {
	    echo json_encode("admin");
	} else if ($this->hasCurrentUserRight('right_manager')) {
	    echo json_encode("manager");
	} else if ($this->hasCurrentUserRight('right_closing')) {
	    echo json_encode("closing");
	} else {
	    echo json_encode(NO);
	}
    }

    function isLoggedinUserKitchen() {
		if ($this->hasCurrentUserRight('right_kitchen')) {
			echo json_encode(YES);
		} else {
			echo json_encode(NO);
		}
	}
	
	function isLoggedinUserBar() {
		if ($this->hasCurrentUserRight('right_bar')) {
			echo json_encode(YES);
		} else {
			echo json_encode(NO);
		}
	}
	
	function hasUserPaydeskRight() {
		if ($this->hasCurrentUserRight('right_paydesk')) {
			echo json_encode(YES);
		} else {
			echo json_encode(NO);
		}
	}
	
	function hasUserReservationRight() {
		if ($this->hasCurrentUserRight('right_reservation')) {
			echo json_encode(YES);
		} else {
			echo json_encode(NO);
		}
	}
	
	function hasCurrentUserRight($whichRight) {
		if(session_id() == '') {
	    	session_start();
		}
		if (!isset($_SESSION['angemeldet']) || !$_SESSION['angemeldet']) {
			return false;
		} else {
			return ($_SESSION[$whichRight]);
		}
	}
	
	function isCurrentUserAdmin() {
		return $this->hasCurrentUserRight('is_admin');
	}


	function fillSampleContentBySqlFile($pdo,$sqlFile) {
		$handle = fopen ($sqlFile, "r");
		while (!feof($handle)) {
			$sql = fgets($handle);
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
			$stmt->execute();
		}
		fclose ($handle);
	}
	
	private function assignTaxes($foodTax,$drinksTax) {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$pdo->beginTransaction();
		
		try {			
			$sql = "UPDATE %products%,%prodtype% SET %products%.taxaustria=? WHERE %products%.category=%prodtype%.id AND %prodtype%.kind=? AND %products%.removed is null AND %prodtype%.removed is null";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));

			$stmt->execute(array($foodTax,0));
			$stmt->execute(array($drinksTax,1));
			
			HistFiller::readAllProdsAndFillHistByDb($pdo);
			
			$pdo->commit();
			echo json_encode (array("status" => "OK"));
		} catch (Exception $e) {
			$pdo->rollBack();
			echo json_encode(array("status" => "ERROR", "code" => NUMBERFORMAT_ERROR, "msg" => NUMBERFORMAT_ERROR_MSG));
		}
		
	}
	
	private function fillSpeisekarte($speisekarte) {
		$pdo = $this->dbutils->openDbAndReturnPdo();
		$pdo->beginTransaction();
		
		$ret = $this->fillSpeisekarteCore($pdo,$speisekarte);
		if ($ret["status"] != "OK") {
			$pdo->rollBack();
		} else {
			$pdo->commit();
		}
		echo json_encode($ret);
	}
	
	public function fillSpeisekarteCore($pdo,$speisekarte,$doCleanProdImages = true) {
		$sql = "DELETE FROM %extrasprods%";
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute();

		$speisekartenHandler = new TypeAndProductFileManager();
		
		$ret = $speisekartenHandler->manageSpeisekarte($pdo,$speisekarte);

		if ($doCleanProdImages) {
			Products::cleanProdImagesTable($pdo);
		}
		
		$basedb = new Basedb();
		$basedb->sortProdTypes($pdo);
		
		return $ret;
	}
	
	private function fillSampleContent()
	{
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$sql = "DELETE FROM `%queue%`";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute();
		$this->fillSampleContentBySqlFile($pdo,"samples/queuecontent.txt");
		
		$sql = "DELETE FROM `%hist%` WHERE action='3' OR action='7' OR action='8'";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute();
		
		$sql = "DELETE FROM `%histuser%`";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute();
		
		$sql = "DELETE FROM `%user%`";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute();
		$this->fillSampleContentBySqlFile($pdo,"samples/usercontent.txt");

		$this->histfiller->readUserTableAndSendToHist($pdo);
	}
	
	function getJsonMenuItemsAndVersion() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		echo json_encode($this->getJsonMenuItemsAndVersionCore($pdo));
	}
	
	/*
	 * Return all the entries for the main menu (the modules)
	 */
	private function getJsonMenuItemsAndVersionCore($pdo) {
		if(session_id() == '') {
			session_start();
		}
		$mainMenu = array();
		$currentUser = "";
		$waiterMessage = "";
		$loggedIn = true;
		if (!isset($_SESSION['angemeldet']) || !$_SESSION['angemeldet']) {
			$mainMenu[] = array("name" => "Startseite", "link" => "index.html");
			$loggedIn = false;
		} else {
			$lang = $_SESSION['language'];
			$waiterdesktxt = array("Kellneransicht","Waiter's View","Vista de camareros");
			$kitchentxt = array("K&uuml;che","Kitchen","Cocina");
			$timetrackingtxt = array("Zeiterfassung","Time tracking","Tiempos");
			$taskstxt = array("Aufgaben","Tasks","Tareas");
			$waitertxt = array("Bestellung","Orderdesk","Camarero");
			$paydesktxt = array("Kasse","Paydesk","Caja");
			$settingtxt = array("Einstellungen","Preferences","Propriedades");
			$admintxt = array("Verwaltung","Administration","Administrar");
			$supplytxt = array("Bereitstellung","Supply desk","Preparado");
			$prodtxt = array("Angebot","Products","Productos");
			$restxt = array("Reservierung","Reservation","Reserva");
			$bontxt = array("Kassenbons","Receipts","Tiques");
			$stattxt = array("Statistik","Statistics","Estadisticas");
			$ratingtxt = array("Bewertung","Rating","Valoración");
			$customerstxt = array("Gäste","Guests","Clientes");
			$dashtxt = array("Dashboard","Dashboard","Dashboard");
			$logout = array("Abmelden","Log out","Adios");
			
			$rights = array($_SESSION['is_admin'],$_SESSION['right_waiter'],$_SESSION['right_kitchen'],
					$_SESSION['right_bar'],$_SESSION['right_supply'],$_SESSION['right_paydesk'],
					$_SESSION['right_statistics'],$_SESSION['right_bill'],$_SESSION['right_products'],
					$_SESSION['right_reservation'],$_SESSION['right_changeprice'],$_SESSION['right_customers'],
					$_SESSION['right_manager'],$_SESSION['right_closing'],$_SESSION['right_dash'],
					$_SESSION['right_timetracking'],$_SESSION['right_timemanager'],
					$_SESSION['right_tasks'],$_SESSION['right_tasksmanagement']);
			$right_rating = $_SESSION['right_rating'];
			
			if (!self::isOnlyRatingUser($rights, $right_rating, true)) {	
			    if ($_SESSION['modus'] == 0) {
				if ($_SESSION['right_waiter']) { $mainMenu[] = array("name" => $waitertxt[$lang], "link" => "waiter.html?v=1.5.6"); }
			    } else {
				if ($_SESSION['right_waiter']) { $mainMenu[] = array("name" => $waiterdesktxt[$lang], "link" => "waiterdesktop.php?v=1.5.6"); }
			    }
			    if ($_SESSION['right_kitchen']) { $mainMenu[] = array("name" => $kitchentxt[$lang], "link" => "kitchen.html?v=1.5.6"); }
			    if ($_SESSION['right_bar']) { $mainMenu[] = array("name" => "Bar", "link" => "bar.html?v=1.5.6"); }
			    if ($_SESSION['right_supply']) { $mainMenu[] = array("name" => $supplytxt[$lang], "link" => "supplydesk.html?v=1.5.6"); }
			    if ($_SESSION['modus'] == 0) {
				if ($_SESSION['right_paydesk']) { $mainMenu[] = array("name" => $paydesktxt[$lang], "link" => "paydesk.html?v=1.5.6"); }
			    }
			    if ($_SESSION['right_statistics']) { $mainMenu[] = array("name" => $stattxt[$lang], "link" => "reports.html?v=1.5.6"); }
			    if ($_SESSION['right_bill']) { $mainMenu[] = array("name" => $bontxt[$lang], "link" => "bill.html?v=1.5.6"); }
			    if ($_SESSION['right_products']) { $mainMenu[] = array("name" => $prodtxt[$lang], "link" => "products.html?v=1.5.6");	}
			    if ($_SESSION['right_reservation']) { $mainMenu[] = array("name" => $restxt[$lang], "link" => "reservation.html?v=1.5.6"); }
			    if ($_SESSION['right_tasks'] || $_SESSION['right_tasksmanagement']) { $mainMenu[] = array("name" => $taskstxt[$lang], "link" => "tasks.html?v=1.5.6"); }
			    if ($_SESSION['right_rating']) { $mainMenu[] = array("name" => $ratingtxt[$lang], "link" => "rating.html?v=1.5.6"); }
			    if ($_SESSION['right_customers']) { $mainMenu[] = array("name" => $customerstxt[$lang], "link" => "customers.html?v=1.5.6"); }
			    if ($_SESSION['right_dash']) { $mainMenu[] = array("name" => $dashtxt[$lang], "link" => "dash.php?v=1.5.6"); }
			    if ($_SESSION['right_manager'] || $_SESSION['is_admin'] || $_SESSION['right_closing']) { $mainMenu[] = array("name" => $admintxt[$lang], "link" => "manager.html?v=1.5.6"); }
			    $mainMenu[] = array("name" => $settingtxt[$lang], "link" => "preferences.html?v=1.5.6");
			    if ($_SESSION['right_timetracking'] || $_SESSION['right_timemanager']) { $mainMenu[] = array("name" => $timetrackingtxt[$lang], "link" => "timetracking.html?v=1.5.6"); }
			    
			    $mainMenu[] = array("name" => "Hilfe", "link" => "help.php?v=1.5.6");
			    $mainMenu[] = array("name" => "Feedback", "link" => "feedback.html?v=1.5.6");
			}
			
			$mainMenu[] = array("name" => $logout[$lang], "link" => "logout.php");
			$currentUser = $_SESSION['currentuser'];
			
			$waiterMessage = $this->getMessage(null, "waitermessage");
		}
		$installedVersion = CommonUtils::getConfigValue($pdo, 'version', '?');
		
		$mainMenuAndVersion = array ("version" => "OrderSprinter $installedVersion", 
				"user" => $currentUser, 
				"menu" => $mainMenu, 
				"waitermessage" => $waiterMessage,
				"loggedin" => ($loggedIn ? 1:0)
		);
		return($mainMenuAndVersion);
	}
	
	private function getPrinterInstances() {
		try {
			$pdo = DbUtils::openDbAndReturnPdoStatic();
			$k1 = CommonUtils::getConfigValue($pdo, 'k1prinstance', 1);
			$k2 = CommonUtils::getConfigValue($pdo, 'k2prinstance', 1);
			$k3 = CommonUtils::getConfigValue($pdo, 'k3prinstance', 1);
			$k4 = CommonUtils::getConfigValue($pdo, 'k4prinstance', 1);
			$k5 = CommonUtils::getConfigValue($pdo, 'k5prinstance', 1);
			$k6 = CommonUtils::getConfigValue($pdo, 'k6prinstance', 1);
			$f1 = CommonUtils::getConfigValue($pdo, 'f1prinstance', 1);
			$f2 = CommonUtils::getConfigValue($pdo, 'f2prinstance', 1);
			$d1 = CommonUtils::getConfigValue($pdo, 'd1prinstance', 1);
			$d2 = CommonUtils::getConfigValue($pdo, 'd2prinstance', 1);
			
			$ret = array("k1" => $k1,"k2" => $k2,"k3" => $k3, "k4" => $k4,"k5" => $k5,"k6" => $k6,"d1" => $d1,"d2" => $d2,"f1" => $f1,"f2" => $f2);
			echo json_encode(array("status" => "OK","msg" => $ret));
			
		} catch (Exception $ex) {
			echo json_encode(array("status" => "ERROR","msg" => "Error: $e"));
			return;
		}
	}
	
	private function setprinterinstances($k1,$k2,$k3,$k4,$k5,$k6,$f1,$f2,$d1,$d2) {
		try {
			$pdo = DbUtils::openDbAndReturnPdoStatic();
			$sql = "UPDATE %config% SET setting=? WHERE name=?";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
			$stmt->execute(array($k1,"k1prinstance"));
			$stmt->execute(array($k2,"k2prinstance"));
			$stmt->execute(array($k3,"k3prinstance"));
			$stmt->execute(array($k4,"k4prinstance"));
			$stmt->execute(array($k5,"k5prinstance"));
			$stmt->execute(array($k6,"k6prinstance"));
			
			$stmt->execute(array($f1,"f1prinstance"));
			$stmt->execute(array($f2,"f2prinstance"));
			
			$stmt->execute(array($d1,"d1prinstance"));
			$stmt->execute(array($d2,"d2prinstance"));
			
			echo json_encode(array("status" => "OK"));
			
		} catch (Exception $ex) {

		}
	}
	
	private function getdashreports() {
		try {
			$pdo = DbUtils::openDbAndReturnPdoStatic();
			
			$reports = new Reports();
			$stat = $reports->getStatsCore($pdo,true);
			
			echo json_encode(array("status" => "OK","msg" => array("stat" => $stat)));
			
		} catch (Exception $ex) {
			echo json_encode(array("status" => "ERROR","msg" => "Error: " . $ex->getMessage()));
			return;
		}
	}
	
	private function getDailycode() {
		try {
			$pdo = DbUtils::openDbAndReturnPdoStatic();	
			$dailycode = CommonUtils::getConfigValue($pdo, 'dailycode', "");	
			echo json_encode(array("status" => "OK","msg" => $dailycode));	
		} catch (Exception $ex) {
			echo json_encode(array("status" => "ERROR","msg" => "Error: " . $ex->getMessage()));
			return;
		}
	}
	
	private function getDbStat() {
		try {
			$pdo = DbUtils::openDbAndReturnPdoStatic();
			
			$sql = "SELECT  table_name, round(sum( data_length + index_length ) / 1024) as tablesizeinmb FROM information_schema.TABLES ";
			$sql .= " WHERE table_schema=? AND table_name like ? group by table_name order by table_name";
			$result = CommonUtils::fetchSqlAll($pdo, $sql, array(MYSQL_DB,TAB_PREFIX . "%"));
			
			$max = 0;
			foreach ($result as $aTableResult) {
				$size = intval($aTableResult["tablesizeinmb"]);
				if ($max < $size) {
					$max = $size;
				}
			}
			
			echo json_encode(array("status" => "OK","msg" => array("max" => $max,"tablesizes" => $result)));
		} catch (Exception $e) {
			echo json_encode(array("status" => "ERROR","msg" => "Error: $e"));
			return;
		}
	}
	
	private function getWaiterMessage() {
		try {
			$pdo = DbUtils::openDbAndReturnPdoStatic();
			$waiterMessage = $this->getMessage(null, "waitermessage");
			echo json_encode(array("status" => "OK","msg" => $waiterMessage));
		} catch (Exception $e) {
			echo json_encode(array("status" => "ERROR","msg" => "Error: $e"));
			return;
		}
	}
	
	private function getHotelInfo($pdo) {
		try {
			$hotelinterface = CommonUtils::getConfigValue($pdo, "hotelinterface", 0);
			$guests = array();
			if ($hotelinterface == 1) {
				$sql = "SELECT reservationid,object,guest FROM %hsout%";
				$guests = CommonUtils::fetchSqlAll($pdo, $sql, null);
			}
			return(array("status" => "OK","hotelinterface" => $hotelinterface,"guests" => $guests));
		} catch (Exception $e) {
			return(array("status" => "ERROR","hotelinterface" => 0,"guests" => array()));
		}
	}
	
	private function getGuestInfo($pdo) {
		try {
			$sql = "SELECT %customers%.id as id,%customers%.id as object,CONCAT(IFNULL(name,''),' - ',IFNULL(room,'')) as guest ";
			$sql .= " FROM %customers%,%vacations% ";
			$sql .= " WHERE %customers%.id=%vacations%.customerid AND (";
			$sql .= " ((checkin <= CURDATE()) AND (CURDATE() <= checkout)) ";
			$sql .= " OR (checkin is null AND (CURDATE() <= checkout)) ";
			$sql .= " OR ((checkin <= CURDATE()) AND checkout is null) ";
			$sql .= ") GROUP BY id,object,guest";
			$guests = CommonUtils::fetchSqlAll($pdo, $sql, null);
			return(array("status" => "OK","guests" => $guests));
		} catch (Exception $ex) {
			return(array("status" => "ERROR"));
		}
	}
	
	function getRoleList() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$roles = $this->getRoleListCore($pdo);
		echo json_encode(array("status" => "OK","msg" => $roles));
	}
	
	function getRoleListCore($pdo) {
		$sql = "SELECT * from %roles% ORDER BY is_admin,right_manager,right_waiter DESC,right_kitchen DESC,right_bar DESC,right_paydesk DESC,right_bill DESC,right_supply DESC,right_tasks DESC,right_tasksmanagement DESC";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute();
		$roles = $stmt->fetchAll(PDO::FETCH_ASSOC);
		return $roles;
	}
	
	function getUserList() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$sql = "SELECT *,%user%.id as id,is_admin,right_manager,IFNULL(%user%.area,'0') as tablearea FROM %user%,%roles% WHERE active='1' AND %user%.roleid=%roles%.id ORDER BY is_admin,right_manager,right_waiter DESC,right_kitchen DESC,right_bar DESC,right_paydesk DESC,right_bill DESC,right_supply DESC,right_tasks DESC,right_tasksmanagement DESC,username";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute();
		$users = $stmt->fetchAll(PDO::FETCH_ASSOC);
		
		$roles = $this->getRoleListCore($pdo);
		
		$defaultview = CommonUtils::getConfigValue($pdo, "defaultview", 0);
		
		echo json_encode(array("users" => $users,"roles" => $roles,"defaultview" => $defaultview));
	}
	
	function setTime($day,$month,$year,$hour,$min) {
		if (!($this->userrights->hasCurrentUserRight('is_admin'))) {
			echo json_encode (array("status" => "ERROR","msg" => "Benutzerrechte nicht ausreichend!"));
			return false;
		} else {
			
			$txt = sprintf("%02d", $month) .  sprintf("%02d", $day) .  sprintf("%02d", $hour) .  sprintf("%02d", $min) . $year = substr($year, -2);;

			try {
				if (substr(php_uname(), 0, 7) == "Windows"){
					echo json_encode (array("status" => "ERROR","msg" => "Zeit auf Windows-Server kann nicht gesetzt werden!"));
					return false;
				}
				else {
					$cmd = "date \"$txt\"";
					shell_exec($cmd . " > /dev/null &");
				}
			} catch(Exception $e) {
				echo json_encode(array("status" => "ERROR", "code" => ERROR_SCRIPT_NOT_EXECUTABLE, "msg" => ERROR_SCRIPT_NOT_EXECUTABLE_MSG));
			}
			
			$this->getGeneralConfigItems(true,null);
		}
	}

	function updateRole() {
		
		if(session_id() == '') {
			session_start();
		}
		
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		
		if (($_POST["isAdmin"] == 1) && (!$_SESSION['is_admin'])) {
			echo json_encode(array("status" => "ERROR","msg" => "Nicht-Admins dürfen keine Rollen mit Admin-Rechten setzen!"));
			return;
		}
		
		$roleid = $_POST["roleid"];
		$roleIsAdmin = self::isRoleAdmin($pdo, $roleid);

		if ($roleIsAdmin && !($this->isCurrentUserAdmin())) {
			echo json_encode(array("status" => "ERROR","msg" => "Benutzer ist kein Admin und darf keine Admin-Rollen bearbeiten!"));
			return;
		}

		$sql = "SELECT id FROM %user% WHERE roleid=? AND active='1'";
		$effectedUsers = CommonUtils::fetchSqlAll($pdo, $sql, array($roleid));
		
		$keys = array();
		$vals = array();

		foreach(DbUtils::$userCols as $userCol) {
		    if (!is_null($userCol["update"])) {
			$key = $userCol["col"];
			$keys[] = $key . "=?";
			$vals[] = $_POST[$userCol["update"]];
		    }
		}
		$keys[] = "name=?";
		$vals[] = $_POST["username"];
		$vals[] = $roleid;

		$keysStr = join(",",$keys);
		$sql = "UPDATE %roles% SET " . $keysStr . " WHERE id=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute($vals);
		
		foreach( $effectedUsers as $aUser) {
			$userid = $aUser["id"];
			HistFiller::updateUserInHist($pdo, $userid);
		}
		
		echo json_encode(array("status" => "OK"));
	}
	
	function createNewRole() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		
		$keys = array();
		$vals = array();
		$quests = array();
				
		foreach(DbUtils::$userCols as $userCol) {
		    if (!is_null($userCol["new"])) {
			$quests[] = '?';
			$key = $userCol["col"];
			if ($key == "username") {
				$key = "name";
			}
			$keys[] = $key;
			$vals[] = $_POST[$userCol['new']];
		    }
		}
				
		$keysStr = join(",",$keys);
		$questsStr = join(",",$quests);
		$sql = "INSERT INTO %roles% (" . $keysStr . ") VALUES(" . $questsStr . ")";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute($vals);

		echo json_encode(array("status" => "OK"));
				
	}
	
	function createNewUser() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		
		$username = $_POST['name'];
		$password = $_POST['password'];
		$roleid = $_POST['roleid'];
		$area = $_POST['area'];
		if ($area == 0) {
			$area = null;
		}
		
		$sql = "SELECT count(id) as countid FROM %user% WHERE active='1' AND username=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($username));
		$row = $stmt->fetchObject();

		if ($row->countid > 0) {
			echo json_encode(array("status" => "ERROR", "code" => ERROR_NAME_EXISTS_ALREADY, "msg" => ERROR_NAME_EXISTS_ALREADY_MSG));
			return;
		} else {
			
			if(session_id() == '') {
				session_start();
			}			
			$lang = $_SESSION['language'];

			$roleIsAdmin = self::isRoleAdmin($pdo, $roleid);
			if ($roleIsAdmin && !($this->isCurrentUserAdmin())) {
				echo json_encode(array("status" => "ERROR", "code" => ERROR_COMMAND_NOT_ADMIN, "msg" => ERROR_COMMAND_NOT_ADMIN_MSG));
				return;
			} else {
				$password_hash = md5($password);
				
				$sql = "INSERT INTO %user% (username,userpassword,roleid,area,language,showplusminus,keeptypelevel,extrasapplybtnpos,prefertablemap,preferimgdesk,preferimgmobile,active) VALUES(?,?,?,?,?,?,?,?,?,?,?,?)";
				$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
				$stmt->execute(array($username,$password_hash,$roleid,$area,$lang,1,1,1,1,1,1,1));
			
				$lastId = $pdo->lastInsertId();
				
				HistFiller::createUserInHist($pdo, $lastId);

				echo json_encode(array("status" => "OK"));
			}
		}
	}
	
	function getPayPrintType() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$this->sendJsonValueFromConfigTable($pdo,'payprinttype');
	}
	
	function getPayments() {
		if(session_id() == '') {
			session_start();
		}
		$pdo = $this->dbutils->openDbAndReturnPdo();
		
		$hotelinterface = CommonUtils::getConfigValue($pdo, "hotelinterface", 0);
		$where = " WHERE id <> 7";
		if ($hotelinterface != 0) {
			$where = "";
		}
		$lang = $_SESSION['language'];
		$sql = "SELECT id,name FROM %payment% $where";
		if ($lang == 1) {
			$sql = "SELECT id,name_en as name FROM %payment% $where";
		} else if ($lang == 2) {
			$sql = "SELECT id,name_esp as name FROM %payment% $where";
		}
		
		$stmt_query = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		
		$stmt_query->execute();
		$result = $stmt_query->fetchAll();
		$retArray = array();
		
		foreach($result as $row) {
			$entry = array("id"=> $row['id'], "name" => $row['name']);
			$retArray[] = $entry;
		}
		
		$hotelinfo = $this->getHotelInfo($pdo);
		$internalguests = $this->getGuestInfo($pdo);
		
		echo json_encode(array("payments" => $retArray, "hotelinterface" => $hotelinfo["hotelinterface"],"guests" => $hotelinfo["guests"],"internalguests" => $internalguests["guests"]));
	}
	
	function sendJsonValueFromConfigTable($pdo,$whichValue) {
		$theVal = CommonUtils::getConfigValue($pdo, $whichValue, "");
		if ($theVal == null) {
			echo json_encode("");
		} else {
			echo json_encode($theVal);
		}
	}

	private static function changeItemInTable($pdo,$theItem,$theValue,$theTable) {
		$sql = "SELECT id FROM $theTable WHERE name=?";
		$result = CommonUtils::fetchSqlAll($pdo, $sql, array($theItem));
		if (count($result) == 0) {
			$sql = "INSERT INTO $theTable (name,setting) VALUES(?,?)";
			CommonUtils::execSql($pdo, $sql, array($theItem,$theValue));
		} else {
			$sql = "UPDATE $theTable SET setting=? WHERE name=?";
			CommonUtils::execSql($pdo, $sql, array($theValue,$theItem));
		}
	}
	
	private function deletelogo() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		self::changeItemInTable($pdo, "logoimg", null, "%logo%");
		echo json_encode("OK");
	}
	
	private function readlogo() {
	
		if ($_FILES['logofile']['error'] != UPLOAD_ERR_OK               //checks for errors
				&& is_uploaded_file($_FILES['logofile']['tmp_name'])) { //checks that file is uploaded
			header("Location: ../infopage.html?e=manager.html=Kann_Datei_nicht_laden.");
			exit();
		}
		
		if(!file_exists($_FILES['logofile']['tmp_name']) || !is_uploaded_file($_FILES['logofile']['tmp_name'])) {
			header("Location: ../infopage.html?e=manager.html=Datei_nicht_angegeben.");
			exit();
		}
		
		$content = file_get_contents($_FILES['logofile']['tmp_name']);

		if ($_FILES['logofile']['error'] != UPLOAD_ERR_OK               //checks for errors
				&& is_uploaded_file($_FILES['logofile']['tmp_name'])) { //checks that file is uploaded
			header("Location: ../infopage.html?e=manager.html=Kann_Datei_nicht_laden.");
			exit();
		}

		if (strlen($content) > 65535) {
			header("Location: ../infopage.html?e=manager.html=Logobild_muss_kleiner_als_64_Kilobytes_sein!");
			exit();
		}
		
		$pdo = DbUtils::openDbAndReturnPdoStatic();

		self::changeItemInTable($pdo, "logoimg", $content, "%logo%");

		header("Location: ../infopage.html?i=manager.html=Import_war_erfolgreich."); /* Browser umleiten */
		exit;
	}
	
	private static function returnInRange($aVal,$min,$max, $default) {
		$aVal = trim($aVal);
		
		if (!ctype_digit($aVal)) {
			$aVal = $default;
		}
		$aVal = intval($aVal);
		if (($aVal < $min) || ($aVal > $max)) {
			$aVal = $default;
		}
		
		return $aVal;
	}
	
	function changeConfig($changedValues) {
		$pdo = $this->dbutils->openDbAndReturnPdo();
		$assoc_vals = array(
				"usstval" => array("dbcol" => "tax","checknum" => 1),
				"togotaxval" => array("dbcol" => "togotax","checknum" => 1),
				"taxaustrianormalval" => array("dbcol" => "taxaustrianormal","checknum" => 1),
				"taxaustriaerm1val" => array("dbcol" => "taxaustriaerm1","checknum" => 1),
				"taxaustriaerm2val" => array("dbcol" => "taxaustriaerm2","checknum" => 1),
				"taxaustriaspecialval" => array("dbcol" => "taxaustriaspecial","checknum" => 1),
				"stornocode" => array("dbcol" => "stornocode","checknum" => 0),
				"printpass" => array("dbcol" => "printpass","checknum" => 0),
				"companyinfo" => array("dbcol" => "companyinfo","checknum" => 0),
				"hosttext" => array("dbcol" => "hosttext","checknum" => 0),
				"rectemplate" => array("dbcol" => "rectemplate","checknum" => 0),
				"foodtemplate" => array("dbcol" => "foodtemplate","checknum" => 0),
				"drinktemplate" => array("dbcol" => "drinktemplate","checknum" => 0),
				"canceltemplate" => array("dbcol" => "canceltemplate","checknum" => 0),
				"serverUrl" => array("dbcol" => "serverurl","checknum" => 0),
				"guesturl" => array("dbcol" => "guesturl","checknum" => 0),
				"guestcode" => array("dbcol" => "guestcode","checknum" => 0),
				"dailycode" => array("dbcol" => "dailycode","checknum" => 0),
				"email" => array("dbcol" => "email","checknum" => 0),
				"emailbadrating" => array("dbcol" => "emailbadrating","checknum" => 0),
				"emailratingcontact" => array("dbcol" => "emailratingcontact","checknum" => 0),
				"receiveremail" => array("dbcol" => "receiveremail","checknum" => 0),
				"payprinttype" => array("dbcol" => "payprinttype","checknum" => 0),
				"paymentconfig" => array("dbcol" => "paymentconfig","checknum" => 0),
				"addreceipttoprinter" => array("dbcol" => "addreceipttoprinter", "checknum" => 0),
				"bigfontworkreceipt" => array("dbcol" => "bigfontworkreceipt","checknum" => 0),
				"prominentsearch" => array("dbcol" => "prominentsearch","checknum" => 0),
				"guestjobprint" => array("dbcol" => "guestjobprint","checknum" => 0),
				"askdaycode" => array("dbcol" => "askdaycode","checknum" => 0),
				"asktablecode" => array("dbcol" => "asktablecode","checknum" => 0),
				"showdaycode" => array("dbcol" => "showdaycode","checknum" => 0),
				"guesttimeout"=> array("dbcol" => "guesttimeout","checknum" => 0),
				"discount1" => array("dbcol" => "discount1","checknum" => 0),
				"discount2" => array("dbcol" => "discount2","checknum" => 0),
				"discount3" => array("dbcol" => "discount3","checknum" => 0),
				"austria" => array("dbcol" => "austria","checknum" => 0),
				"digigopaysetready" => array("dbcol" => "digigopaysetready","checknum" => 0),
				"waitergopayprint" => array("dbcol" => "waitergopayprint","checknum" => 0),
				"oneprodworkrecf" => array("dbcol" => "oneprodworkrecf","checknum" => 0),
				"oneprodworkrecd" => array("dbcol" => "oneprodworkrecd","checknum" => 0),
				"digiprintwork" => array("dbcol" => "digiprintwork","checknum" => 0),
				"groupworkitemsf" => array("dbcol" => "groupworkitemsf","checknum" => 0),
				"groupworkitemsd" => array("dbcol" => "groupworkitemsd","checknum" => 0),
				"workflowconfig" => array("dbcol" => "workflowconfig","checknum" => 0),
				"dashslot1" => array("dbcol" => "dashslot1","checknum" => 0),
				"dashslot2" => array("dbcol" => "dashslot2","checknum" => 0),
				"dashslot3" => array("dbcol" => "dashslot3","checknum" => 0),
				"receiptfontsize" => array("dbcol" => "receiptfontsize","checknum" => 0),
				"billlanguage" => array("dbcol" => "billlanguage","checknum" => 0),
				"hotelinterface" => array("dbcol" => "hotelinterface","checknum" => 0),
				"hsinfile" => array("dbcol" => "hsinfile","checknum" => 0),
				"hsoutfile" => array("dbcol" => "hsoutfile","checknum" => 0),
				"hscurrency" => array("dbcol" => "hscurrency","checknum" => 0),
				"reservationnote" => array("dbcol" => "reservationnote","checknum" => 0),
				"remoteaccesscode" => array("dbcol" => "remoteaccesscode","checknum" => 0),
				"webimpressum" => array("dbcol" => "webimpressum","checknum" => 0),
				"cancelunpaidcode" => array("dbcol" => "cancelunpaidcode","checknum" => 0),
				"cancelguestcode" => array("dbcol" => "cancelguestcode","checknum" => 0),
				"printandqueuejobs" => array("dbcol" => "printandqueuejobs","checknum" => 0),
				"cashenabled" => array("dbcol" => "cashenabled","checknum" => 0),
				"returntoorder" => array("dbcol" => "returntoorder","checknum" => 0),
				"beepcooked" => array("dbcol" => "beepcooked","checknum" => 0),
				"beepordered" => array("dbcol" => "beepordered","checknum" => 0),
				"taskallassign" => array("dbcol" => "taskallassign","checknum" => 0),
				"taskifempty" => array("dbcol" => "taskifempty","checknum" => 0),
				"taskownerempty" => array("dbcol" => "taskownerempty","checknum" => 0),
		    "showtogo" => array("dbcol" => "showtogo","checknum" => 0),
		    	    
		    "closshowci" => array("dbcol" => "closshowci","checknum" => 0),
		    "closshowpaytaxes" => array("dbcol" => "closshowpaytaxes","checknum" => 0),
		    "closshowprods" => array("dbcol" => "closshowprods","checknum" => 0),
		    
		    "showpayment2" => array("dbcol" => "showpayment2","checknum" => 0),
		    "showpayment3" => array("dbcol" => "showpayment3","checknum" => 0),
		    "showpayment4" => array("dbcol" => "showpayment4","checknum" => 0),
		    "showpayment5" => array("dbcol" => "showpayment5","checknum" => 0),
		    "showpayment6" => array("dbcol" => "showpayment6","checknum" => 0),
		    "showpayment7" => array("dbcol" => "showpayment7","checknum" => 0),
		    "showpayment8" => array("dbcol" => "showpayment8","checknum" => 0),

				"restaurantmode" => array("dbcol" => "restaurantmode","checknum" => 0),
				"defaultview" => array("dbcol" => "defaultview", "checknum" => 0),
				"dblog" => array("dbcol" => "dblog","checknum" => 0),
				"printextras" => array("dbcol" => "printextras","checknum" => 0),
				"forceprint" => array("dbcol" => "forceprint","checknum" => 0),
				"priceinlist" => array("dbcol" => "priceinlist","checknum" => 0),
				"smtphost" => array("dbcol" => "smtphost","checknum" => 0),
				"smtpauth" => array("dbcol" => "smtpauth","checknum" => 1),
				"smtpuser" => array("dbcol" => "smtpuser","checknum" => 0),
				"smtppass" => array("dbcol" => "smtppass","checknum" => 0),
				"smtpsecure" => array("dbcol" => "smtpsecure","checknum" => 1),
				"smtpport" => array("dbcol" => "smtpport","checknum" => 0),
				"startprodsearch" => array("dbcol" => "startprodsearch","checknum" => 1),
		    
				"discountname1" => array("dbcol" => "discountname1","checknum" => 0),
				"discountname2" => array("dbcol" => "discountname2","checknum" => 0),
				"discountname3" => array("dbcol" => "discountname3","checknum" => 0),

				"memorylimit" => array("dbcol" => "memorylimit","checknum" => 0),
				"minbeforecome" => array("dbcol" => "minbeforecome","checknum" => 0),
				"minaftergo" => array("dbcol" => "minaftergo","checknum" => 0),
				"updateurl" => array("dbcol" => "updateurl","checknum" => 0),
				"tmpdir" => array("dbcol" => "tmpdir","checknum" => 0),
				"ftphost" => array("dbcol" => "ftphost","checknum" => 0),
				"ftpuser" => array("dbcol" => "ftpuser","checknum" => 0),
				"ftppass" => array("dbcol" => "ftppass","checknum" => 0),
				"hs3refresh" => array("dbcol" => "hs3refresh","checknum" => 0),
		    
				"pollbills" => array("dbcol" => "pollbills","checknum" => 0),
				"pollworksf" => array("dbcol" => "pollworksf","checknum" => 0),
				"pollworksd" => array("dbcol" => "pollworksd","checknum" => 0),
				"pollclosings" => array("dbcol" => "pollclosings","checknum" => 0),
		    
				"paydeskid" => array("dbcol" => "paydeskid","checknum" => 0),
				"aeskey" => array("dbcol" => "aeskey","checknum" => 0),
				"certificatesn" => array("dbcol" => "certificatesn","checksum" => 0),
				"rksvserver" => array("dbcol" => "rksvserver","checksum" => 0),
				"showprepinwaiter" => array("dbcol" => "showprepinwaiter","checksum" => 0)
		);
		$problem = false;
		foreach ($changedValues as $aChangeSet) {
			$name = $aChangeSet['name'];
			$aVal = $aChangeSet['value'];
			
			if ($name == "payprinttype") {
				if (((string)$aVal) == "1") {
					$aVal = "l";
				}
				if (((string)$aVal) == "2") {
					$aVal = "s";
				}
			}
			
			if ($name == 'addreceipttoprinter') {
			    if ((((string)$aVal) == "0") || (!is_numeric($aVal))) {
				$aVal = null;
			    }
			}
			
			if ($name == "remoteaccesscode") {
				if (((string)$aVal) == "") {
					$aVal = null;
				} else {
					$aVal = md5($aVal);
				}
			}
			if ($name == "printpass") {
				$aVal = md5($aVal);
			}
			
			if ($name == "startprodsearch") {
				if (is_numeric($aVal)) {
					$aVal = round($aVal);
				}
			}
			if ($name == "memorylimit") {
				$aVal = trim($aVal);
				if ($aVal != "-1") {
					if (!ctype_digit($aVal)) {
						$aVal = "256";
					}
					$aVal = intval($aVal);
					if (($aVal < 64) || ($aVal > 65535)) {
						$aVal = 256;
					}
				}
			}
			
			
			if (($name == "pollbills") || ($name == "pollworksf") || ($name == "pollworksd") || ($name == "pollclosings")) {
				$aVal = self::returnInRange($aVal, 1, 30, 2);
			}
			
			if ($name == "minbeforecome") {
				$aVal = trim($aVal);
				if ($aVal != "-1") {
					if (!ctype_digit($aVal)) {
						$aVal = "0";
					}
					$aVal = intval($aVal);
					if ($aVal < 0) {
						$aVal = 0;
					}
				}
			}
			if ($name == "minaftergo") {
				$aVal = trim($aVal);
				if ($aVal != "-1") {
					if (!ctype_digit($aVal)) {
						$aVal = "0";
					}
					$aVal = intval($aVal);
					if ($aVal < 0) {
						$aVal = 0;
					}
				}
			}
			
			if ($name == "guesttimeout") {
				if (is_numeric($aVal)) {
					$aVal = round($aVal);
					if ($aVal < 0) {
						$aVal = 0;
					}
				} else {
					$aVal = 5;
				}
			}
			
			if (($name == "updateurl") || ($name == "tmpdir") || ($name == "ftphost") || ($name == "ftpuser")) {
				$aVal = trim($aVal);
			}
			
			if ($name == "hs3refresh") {
				$aVal = trim($aVal);
				if (!ctype_digit($aVal)) {
					$aVal = "60";
				}
				$aVal = intval($aVal);
				if ($aVal < 5) {
					$aVal = 60;
				}
			}
			
			$association = $assoc_vals[$name];
			$dbcol = $association["dbcol"];
			$check = $association["checknum"];
			
			if ($check == 1) {
				if (is_numeric($aVal)) {
					$this->changeOneConfigDbItem($pdo,$dbcol,$aVal);
				} else {
					$problem = true;
				}
			} else {
				$this->changeOneConfigDbItem($pdo,$dbcol,$aVal);
			}
		}
		if (!$problem) {
			echo json_encode(array("status" => "OK"));
		} else {
			echo json_encode(array("status" => "ERROR", "code" => ERROR_COMMAND_ERROR, "msg" => ERROR_COMMAND_ERROR_MSG));
		}
	}
	
	function changeOneConfigDbItem($pdo,$theItem,$theValue) {
		$histFiller = new HistFiller();
		$histFiller->updateConfigInHist($pdo, $theItem, $theValue);
	}
	
	public static function isRoleAdmin($pdo,$roleid) {
		$sql = "SELECT is_admin FROM %roles% WHERE id=?";
		$is_admin_role = CommonUtils::getRowSqlObject($pdo, $sql, array($roleid));
		return ($is_admin_role->is_admin == 1 ? true : false);
	}
	
	public static function isRoleOfUserAdmin($pdo,$userid) {
		$sql = "SELECT roleid FROM %user% WHERE id=?";
		$role = CommonUtils::getRowSqlObject($pdo, $sql, array($userid));
		$roleid = $role->roleid;
		
		return self::isRoleAdmin($pdo, $roleid);
	}
	
	function updateUser() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		
		$theUserId = $_POST['userid'];
		$roleid = $_POST['roleid'];
		$area = $_POST['area'];
		if ($area == 0) {
			$area = null;
		}
		
		$is_admin_role = self::isRoleAdmin($pdo, $roleid);
		$isRoleOfUserAdmin = self::isRoleOfUserAdmin($pdo, $theUserId);
		
		if (!$this->isCurrentUserAdmin() && ($is_admin_role ||  $isRoleOfUserAdmin)) {
			echo json_encode("noadmin");
		} else {
			$sql = "UPDATE %user% SET roleid=?,area=? WHERE id=?";
			CommonUtils::execSql($pdo, $sql, array($roleid,$area,$theUserId));
			HistFiller::updateUserInHist($pdo,$theUserId);
			echo json_encode("OK");
		}
	}
	
	function deleteRole($roleid) {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$sql = "SELECT id FROM %user% WHERE roleid=? AND active='1'";
		$result = CommonUtils::fetchSqlAll($pdo, $sql, array($roleid));
		if (count($result) > 0) {
			echo json_encode(array("status" => "ERROR","msg" => "Rolle ist noch Benutzern zugewiesen!"));
		} else {
			$sql = "DELETE FROM %roles% WHERE id=?";
			CommonUtils::execSql($pdo, $sql, array($roleid));
			echo json_encode(array("status" => "OK"));
		}
	}
	
	function deleteUser($theUserId) {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		
		$is_admin_role = self::isRoleOfUserAdmin($pdo, $theUserId);
		if (!$this->isCurrentUserAdmin() && $is_admin_role) {
			echo json_encode("noadmin");
		} else {
			
			$sql = "UPDATE %user% set active='0' WHERE id=?";
			CommonUtils::execSql($pdo, $sql, array($theUserId));

			HistFiller::updateUserInHist($pdo,$theUserId);

			$sql = "UPDATE %user% set roleid=? WHERE id=?";
			CommonUtils::execSql($pdo, $sql, array(null,$theUserId));
			
			echo json_encode("OK");
			
		}		
	}
	
	function getCurrentUser() {
		if (!isset($_SESSION['angemeldet']) || !$_SESSION['angemeldet']) {
			echo json_encode("Nobody");
		} else {
			echo json_encode($_SESSION['currentuser']);
		}
	}
	
	function changepassword($userid,$password) {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		
		$sql = "SELECT count(id) as countid FROM %user% WHERE active='1' AND id=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($userid));
		$row = $stmt->fetchObject();
		if ($row->countid == 0) {
		    echo json_encode("ERROR");
		    return;
		}
		
		$userToChgPassIsAdm = self::isRoleOfUserAdmin($pdo, $userid);
		
		$currentUserAdmin = $this->isCurrentUserAdmin();
		if (!$currentUserAdmin && $userToChgPassIsAdm) {
			echo json_encode("noadmin");
		} else {
			if(session_id() == '') {
				session_start();
			}
			$otherUser = false;
			if ($_SESSION['userid'] != $userid) {
				$otherUser = true;
			}

			if ($otherUser && $userToChgPassIsAdm && !($this->isCurrentUserAdmin())) {
				echo json_encode("noadmin");
			} else {
				$password_hash = md5($password);
				$sql = "UPDATE %user% set userpassword=? WHERE active='1' AND id=?";
				CommonUtils::execSql($pdo, $sql, array($password_hash,$userid));
				echo json_encode("OK");
			}
		}
	}
	
	function setUserLanguage($language) {
		if(session_id() == '') {
			session_start();
		}
		$currentuserid = $_SESSION['userid'];
		$_SESSION['language'] = intval($language);

		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$sql = "UPDATE %user% set language=? WHERE active='1' AND id=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($language,$currentuserid));
		echo json_encode("OK");
	}
	
	function setUserReceiptPrinter($printer) {
		if(session_id() == '') {
			session_start();
		}
		$currentuserid = $_SESSION['userid'];
		$_SESSION['receiptprinter'] = intval($printer);
		
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$sql = "UPDATE %user% set receiptprinter=? WHERE active='1' AND id=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($printer,$currentuserid));
		echo json_encode("OK");
	}
	
	function setBtnSize($btn,$size) {
		if(session_id() == '') {
			session_start();
		}
		$currentuserid = $_SESSION['userid'];
		$assoc = array ("0" => "roombtnsize","1" => "tablebtnsize","2" => "prodbtnsize");
		
		$_SESSION[$assoc[$btn]] = intval($size);
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$sql = "UPDATE %user% set " . $assoc[$btn] . "=? WHERE active='1' AND id=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($size,$currentuserid));
		echo json_encode("OK");
	}
	
	function changeOwnPassword($oldpassword,$newpassword) {
		if(session_id() == '') {
			session_start();
		}
		$currentuser = $_SESSION['currentuser'];
		$oldp_hash = md5($oldpassword);

		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$ok = true;
		
		
		$sql = "SELECT count(id) as countid FROM %user% WHERE username=? AND active='1'";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($currentuser));
		$row = $stmt->fetchObject();
		if ($row->countid == 0) {
		    echo json_encode("FAILED");
		    return;
		}
		
		$sql = "SELECT userpassword FROM %user% WHERE username=? AND active='1'";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($currentuser));
		$row = $stmt->fetchObject();
		
		if ($row->userpassword != $oldp_hash) {
			$ok = false;
		}
		
		if ($ok) {
			$newp_hash = md5($newpassword);
			$sql = "UPDATE %user% set userpassword=? WHERE active='1' AND username=?";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
			$stmt->execute(array($newp_hash,$currentuser));
			echo json_encode("OK");
		} else {
			echo json_encode("FAILED");
		}
	}
	
	private function writeCsvHeader($defaultFilename) {
		header("Content-type: text/x-csv");
		header("Content-Disposition: attachment; filename=$defaultFilename");
		header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
		header("Pragma: no-cache");
		header("Expires: 0");
	}
	
	private function exportConfigCsv() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$this->writeCsvHeader("datenexport-config.csv");
		
		echo("Eintragsid; Datum ; Konfiguration; Wert;Beschreibung\n");
		
		$sql = "SELECT DISTINCT %hist%.id as id,date,";
		$sql .= "%config%.name as configitem,%histconfig%.setting as setting,description ";
		$sql .= " FROM %hist%, %histconfig%, %histactions%, %config% ";
		$sql .= " WHERE (refid=%histconfig%.id) ";
		$sql .= " AND %histconfig%.configid = %config%.id ";
		$sql .= " AND (action='2' OR action='6') ";
		$sql .= " AND (action=%histactions%.id) ";
		$sql .= " ORDER BY date,id";
		
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute();
		$result = $stmt->fetchAll();
		
		foreach($result as $zeile) {
			$val1 = $zeile['id'];
			$val2 = $zeile['date'];
			$val3 = $zeile['configitem'];
			$val4 = str_replace("\r\n","<CR>",$zeile['setting']);
			$val4 = str_replace("\n","<CR>",$val4);
			$val5 = $zeile['description'];
		
			echo "$val1; $val2; \"$val3\"; \"$val4\"; \"$val5\"\n";
		}
	}
	
	private function exportLog() {
	    header("Content-type: text/plain");
	    header("Content-Disposition: attachment; filename=server.log");
	    header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
	    header("Pragma: no-cache");
	    header("Expires: 0");
	    $pdo = DbUtils::openDbAndReturnPdoStatic();
	    echo CommonUtils::getLog($pdo);
	}
	
	private function exportUserCsv() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$this->writeCsvHeader("datenexport-benutzer.csv");
		
		echo("Eintragsid; Datum ; Benutzerid; Benutzername; Adminrechte; Kellnerrechte;Kuechenrechte; Barrechte; Bereitstellungsrechte; Kassenrechte; Reportrechte; Kassenbonrechte; Angebotsrechte; Beurteilungsrechte; Preisänderungsrechte; Gästerechte; Tageserfassungsrecht; Dashboardrechte; Zeiterfassung; Zeitmanagement; Aufgaben; Aufgabenmanagement; Managerrechte; Tischbereich; Aktiviert\n");
		
		$sql = "SELECT DISTINCT %hist%.id as id,date,";
		$sql .= "IFNULL(userid,'') as userid,IFNULL(username,'') as username,is_admin,right_waiter,right_kitchen,right_bar,right_supply,";
		$sql .= "right_paydesk,right_statistics,right_bill,right_products,right_rating,right_changeprice,right_customers,right_closing,right_dash,right_timetracking,right_timemanager,right_tasks,right_tasksmanagement,right_manager,active,";
		$sql .= "IFNULL(area,'-') as area,";
		$sql .= "description ";
		$sql .= " FROM %hist%, %histuser%, %histactions% ";
		$sql .= " WHERE (refid=%histuser%.id) ";
		$sql .= " AND (action='3' OR action='7' OR action='8') ";
		$sql .= " AND (action=%histactions%.id) ";
		$sql .= " ORDER BY date,id";
		
		$result = CommonUtils::fetchSqlAll($pdo, $sql,null);
		
		foreach($result as $zeile) {
			$vals = array();
			
			$vals[] = $zeile['id'];
			$vals[] = $zeile['date'];
			$vals[] = $zeile['userid'];
			$vals[] = $zeile['username'];
			$vals[] = ($zeile['is_admin'] == '1' ? "Ja" : "Nein");
			$vals[] = ($zeile['right_waiter'] == '1' ? "Ja" : "Nein");
			$vals[] = ($zeile['right_kitchen'] == '1' ? "Ja" : "Nein");
			$vals[] = ($zeile['right_bar'] == '1' ? "Ja" : "Nein");
			$vals[] = ($zeile['right_supply'] == '1' ? "Ja" : "Nein");
			$vals[] = ($zeile['right_paydesk'] == '1' ? "Ja" : "Nein");
			$vals[] = ($zeile['right_statistics'] == '1' ? "Ja" : "Nein");
			$vals[] = ($zeile['right_bill'] == '1' ? "Ja" : "Nein");
			$vals[] = ($zeile['right_products'] == '1' ? "Ja" : "Nein");
			$vals[] = ($zeile['right_rating'] == '1' ? "Ja" : "Nein");
			$vals[] = ($zeile['right_changeprice'] == '1' ? "Ja" : "Nein");
			$vals[] = ($zeile['right_customers'] == '1' ? "Ja" : "Nein");
			$vals[] = ($zeile['right_closing'] == '1' ? "Ja" : "Nein");
			$vals[] = ($zeile['right_dash'] == '1' ? "Ja" : "Nein");
			$vals[] = ($zeile['right_timetracking'] == '1' ? "Ja" : "Nein");
			$vals[] = ($zeile['right_timemanager'] == '1' ? "Ja" : "Nein");
			$vals[] = ($zeile['right_tasks'] == '1' ? "Ja" : "Nein");
			$vals[] = ($zeile['right_tasksmanagement'] == '1' ? "Ja" : "Nein");
			$vals[] = ($zeile['right_manager'] == '1' ? "Ja" : "Nein");
			$area = $zeile["area"];
			$character = $area;
			if ($area != '-') {
				$character = chr(intval($area) + 64);
			}
			
			$vals[] = $character;
			$vals[] = ($zeile['active'] == '1' ? "Ja" : "Nein");
			$vals[] = $zeile['description'];
			
			$valsTxt = join(';', $vals);
			echo "$valsTxt\n";
		}
	}
	
	/**
	 * Create a temporary directory in PHP's temp folder
	 */
	private function createDirectoryInTemp($tmpFolder) {
		$tmpFolder = trim($tmpFolder);
		if ($tmpFolder == "") {
			$tempfile=tempnam(sys_get_temp_dir(),'');
		} else {
			$tempfile=tempnam($tmpFolder,'');
		}

		if (is_null($tempfile) || ($tempfile== "")) {
			return null;
		}

		if (file_exists($tempfile)) { unlink($tempfile); }
		mkdir($tempfile);
		if (is_dir($tempfile)) {
			$tempfile = str_replace('\\','/',$tempfile);
			return $tempfile;
		} else {
			return null;
		}
	}
	
	private function getConfigTablesToBackupRestore() {
		return array("logo","work","payment","room","resttables","tablepos","tablemaps","pricelevel","prodtype","prodimages","products","config","roles","user","comments","histprod","histconfig","histuser","histactions","hist","extras","extrasprods");
	}
	
	private function getConfigGuestsTablesToBackupRestore() {
		return array("logo","work","payment","room","resttables","tablepos","tablemaps","pricelevel","prodtype","prodimages","products","config","roles","user","comments","histprod","histconfig","histuser","histactions","hist","extras","extrasprods","customers","groups","groupcustomer","vacations");
	}
	
	private function getAllTablesToBackupRestore() {
		return array("closing","logo","printjobs","ratings","work","payment","room","resttables","tablepos","tablemaps","pricelevel","prodtype","prodimages","products","config",
			"roles","user","reservations","customers","groups","groupcustomer","vacations","bill","customerlog","queue","times","records","recordsqueue","billproducts","hsin","hsout","comments","histprod","histconfig","histuser","histactions","hist",
			"extras","extrasprods","queueextras","tasks","taskhist");
	}
	
	private function getAllWithLogsTablesToBackupRestore() {
		return array("log","closing","logo","printjobs","ratings","work","payment","room","resttables","tablepos","tablemaps","pricelevel","prodtype","prodimages","products","config",
			"roles","user","reservations","customers","groups","groupcustomer","vacations","bill","customerlog","queue","times","records","recordsqueue","billproducts","hsin","hsout","comments","histprod","histconfig","histuser","histactions","hist",
			"extras","extrasprods","queueextras","tasks","taskhist");
	}
	
	public function ftpbackup($theType,$remoteaccesscode) {
		if (!extension_loaded("ftp")) {
			echo json_encode(array("status" => "ERROR","msg" => "PHP-Extension ftp ist nicht installiert"));
			return;
		}
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$ftphost = CommonUtils::getConfigValue($pdo, 'ftphost', '');
		$ftpuser = CommonUtils::getConfigValue($pdo, 'ftpuser', '');
		$ftppass = CommonUtils::getConfigValue($pdo, 'ftppass', '');
		$pdo = null;
		
		if (($ftphost == '') || ($ftpuser == '') || ($ftppass = '')) {
			echo json_encode(array("status" => "ERROR","msg" => "Ftp-Verbindung wurde nicht konfiguriert"));
		} else {
			$ok = $this->backup($theType, $remoteaccesscode,true);
			echo json_encode($ok);
		}
	}
	
	public function backup($theType,$remoteaccesscode,$doFtp = false) {
		set_time_limit(60*60);
		date_default_timezone_set(DbUtils::getTimeZone());
		$nowtime = date('Y-m-d');

		$zipExtension = true;
		if (!extension_loaded("zip")) {
			$zipExtension = false;
		}
		
		$pdo = DButils::openDbAndReturnPdoStatic();
		
		$tmpdir = CommonUtils::getConfigValue($pdo, 'tmpdir', '');
		
		if ($theType == "auto") {
			$code = CommonUtils::getConfigValue($pdo, 'remoteaccesscode', null);
			
			if (is_null($code)) {
				echo "No remote access code available - backup not allowed";
				return;
			}
			
			if (is_null($code) || (trim($code) == "")) {
				echo "No remote access code set - backup not allowed";
				return;
			}
			if ($code != md5($remoteaccesscode)) {
				echo "Wrong remote access code used - backup not allowed";
				return;
			}
		}
		
		$pdo->beginTransaction();
		
		$genInfo = $this->getGeneralConfigItems(false, $pdo);
		$version = $genInfo["version"];
		
		$extension = "json";
		if (($tmpdir != '') && $zipExtension) {
			$extension = "zip";
		}
		$fileName = "backup-" . $version . "_" . $nowtime . "-configuration.$extension";
		if ($theType == "all") {
			$fileName = "backup-" . $version . "_" . $nowtime . "-all.$extension";
		} else if ($theType == "alllogs") {
		    $fileName = "backup-" . $version . "_" . $nowtime . "-all-logs.$extension";
		} else if ($theType == "confandguests") {
			$fileName = "backup-" . $version . "_" . $nowtime . "-guests.$extension";
		}
		
		if ($theType == "configuration") {
			$tables = $this->getConfigTablesToBackupRestore();
		} else if ($theType == "confandguests") {
			$tables = $this->getConfigGuestsTablesToBackupRestore();
		} else if (($theType == "all") || ($theType == "auto")) {
			HistFiller::insertSaveHistEntry($pdo);
			$tables = $this->getAllTablesToBackupRestore();
		} else {
		    HistFiller::insertSaveHistEntry($pdo);
		    $tables = $this->getAllWithLogsTablesToBackupRestore();
		}

		$binaryFields = array("signature","img","setting","content");
		$dbcontent = array();
		
		$filenames = array();
		
		foreach($tables as $table) {
			$sql = "DESCRIBE %$table%";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
			$stmt->execute();
			$fields = $stmt->fetchAll(PDO::FETCH_COLUMN);

			
			$fieldstr = implode(",",$fields);
			$sql = "SELECT $fieldstr from %$table%";
			
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));	
			$stmt->execute();
			$result = $stmt->fetchAll(PDO::FETCH_ASSOC);

			$tableContent = array();
			foreach($result as $row) {
				$fieldContent = array();
				foreach($fields as $field) {
					if (in_array($field,$binaryFields) && (!is_null($row[$field]))) {
						$aFieldEntry = array("f" => $field,"v" => base64_encode($row[$field]));
					} else {
						$aFieldEntry = array("f" => $field,"v" => $row[$field]);
					}
					$fieldContent[] = $aFieldEntry;
				};
				$tableContent[] = $fieldContent;
			}
			
			if (($tmpdir == '') || !$zipExtension) {
				$dbcontent[] = array("t" => $table, "c" => $tableContent);
			} else {
				try {
				 $tempfile=tempnam($tmpdir,"$table");
				 $contentToWrite = json_encode($tableContent);
				 $success = file_put_contents($tempfile, $contentToWrite);
				 if ($success == FALSE) {
					 echo "Fehler: Ist das PHP-Tmp-Verzeichnis richtig gesetzt?";
				 }
				 $filenames[] = array("table" => $table,"file" => $tempfile);
				} catch (Exception $ex) {
					echo "Fehler: " . $ex->getMessage() . " - Ist das PHP-Tmp-Verzeichnis richtig gesetzt?";
				}
			}
		}

		$pdo->commit();
		
		if (($tmpdir == '') || !$zipExtension) {
			$retStr = json_encode($dbcontent);
			
			if ($doFtp) {
				return $this->doFtp($pdo, $fileName, $retStr, null);
			} else {
				ob_start();
				header("Pragma: public");
				header("Expires: 0");
				header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
				header("Cache-Control: public");
				header("Content-Description: File Transfer");
				header("Content-type: application/octet-stream");
				header("Content-Disposition: attachment; filename=\"$fileName\"");
				header("Content-Transfer-Encoding: binary");
				header("Content-Length: ". strlen($retStr));

				echo $retStr;
				ob_end_flush();
			}
		} else {
			$zipfile = tempnam($tmpdir,"zip");
			$zip = new ZipArchive();
			if ($zip->open($zipfile, ZipArchive::CREATE)!==TRUE) {
				exit("cannot open <$zipfile>\n");
			}
			
			foreach($filenames as $afilename) {
				$theTable = $afilename["table"];
				$theFilename = $afilename["file"];
				$str = file_get_contents($theFilename);
				$substr = substr($str, 1,10);
				$zip->addFile($theFilename,$theTable);
			}
			$zip->addFromString("version",$version);
			$zip->close();
			
			if ($doFtp) {
				return $this->doFtp($pdo, $fileName, null,$zipfile);
			} else {
				header('Content-Description: File Transfer');
				header('Content-Type: application/zip');
				header('Content-Disposition: attachment; filename="'.basename($fileName).'"');
				header('Expires: 0');
				header('Cache-Control: must-revalidate');
				header('Pragma: public');
				header('Content-Length: ' . filesize($zipfile));

				readfile($zipfile);
			}
			
			foreach($filenames as $afilename) {
				unlink($afilename["file"]);
			}
			unlink($zipfile);
			exit;
		}
	}
	
	private function doFtp($pdo,$filename,$content,$zipfile) {
		try {
			$ftphost = CommonUtils::getConfigValue($pdo, 'ftphost', '');
			$ftpuser = CommonUtils::getConfigValue($pdo, 'ftpuser', '');
			$ftppass = CommonUtils::getConfigValue($pdo, 'ftppass', '');

			$conn_id = ftp_connect($ftphost);
			$login_result = ftp_login($conn_id, $ftpuser, $ftppass);
			ftp_pasv($conn_id, true);

			if ((!$conn_id) || (!$login_result)) {
				return array("status" => "ERROR","msg" => "Ftp-Verbindung zum Server $ftphost konnte nicht hergestellt werden!");
			}

			if (is_null($zipfile)) {
				$fp = fopen('php://temp', 'r+');
				//fwrite($fp, $content);
				fwrite($fp,$content);
				rewind($fp);       
				$upload = ftp_fput($conn_id, $filename, $fp, FTP_BINARY);
			} else {
				$upload = ftp_put($conn_id, $filename, $zipfile, FTP_BINARY);
			}

			ftp_close($conn_id);

			if (!$upload) {
				return array("status" => "ERROR","msg" => "Ftp-Upload war nicht erfolgreich");
			} else {
				return array("status" => "OK");
			}
		} catch (Exception $ex) {
			return array("status" => "ERROR","msg" => "Ftp-Upload war nicht erfolgreich: " . $ex->getMessage());
		}
	}
	
	private function restore() {
		set_time_limit(60*60);

		if ($_FILES['userfile']['error'] != UPLOAD_ERR_OK               //checks for errors
				&& is_uploaded_file($_FILES['userfile']['tmp_name'])) { //checks that file is uploaded
			echo json_encode(array("status" => "ERROR","msg" => "Kann Datei nicht laden."));
			exit();
		}
		
		if(!file_exists($_FILES['userfile']['tmp_name'])) {
			echo json_encode(array("status" => "ERROR","msg" => "Datei existiert nicht. Bitte PHP-Variablen upload_max_filesize und post_max_size_checken."));
			exit();
		}
		
		if(!is_uploaded_file($_FILES['userfile']['tmp_name'])) {
			echo json_encode(array("status" => "ERROR","msg" => "Datei konnte nicht hochgeladen werden."));
			exit();
		}
		
		$zipExtension = true;
		if (!extension_loaded("zip")) {
			$zipExtension = false;
		}

		$origname = $_FILES['userfile']['name'];
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		if (CommonUtils::strEndsWith($origname, '.zip')) {
			if ($zipExtension) {
				$zipFile = $_FILES['userfile']['tmp_name'];
				$this->restoreFromZip($pdo,$zipFile);
			} else {
				echo json_encode(array("status" => "ERROR","msg" => "PHP-Zip-Extension ist nicht installiert."));
			exit();
			}
		} else {
			$content = file_get_contents($_FILES['userfile']['tmp_name']);
			$this->restoreFromJson($pdo,$content);
		}
	}
	
	private function getContextOfImportedJsonFile($dbContent) {
		
		$tableKey = 'table';
		$fieldKey = 'fieldname';
		$contentKey = 'content';
		$valueKey = 'value';
		if (count($dbContent) > 0) {
			$sampleTable = $dbContent[0];
			if (isset($sampleTable['t'])) {
				$fieldKey = 'f';
				$contentKey = 'c';
				$tableKey = 't';
				$valueKey = 'v';
			}
		}
		
		foreach($dbContent as $table) {
			if ($table[$tableKey] == 'config') {
					
				$foundConfigItem = null;
				foreach($table[$contentKey] as $aConfigItem) {
					foreach($aConfigItem as $aConfigDbPart) {
						if (($aConfigDbPart[$fieldKey] == 'name') && ($aConfigDbPart[$valueKey] == 'version')) {
							$foundConfigItem = $aConfigItem;
							break;
						}
					}
				}
				if (!is_null($foundConfigItem)) {
					foreach($foundConfigItem as $aConfigDbPart) {
						if ($aConfigDbPart[$fieldKey] == 'setting') {
							$bakVersion = base64_decode($aConfigDbPart[$valueKey]);
							return array($bakVersion,$tableKey,$fieldKey,$contentKey,$valueKey);
						}
					}
				}
				
			}
		}
		return array("0",$tableKey,$fieldKey,$contentKey,$valueKey);
	}
	
	private function completeImportProcess($pdo) {
		if(session_id() == '') {
			session_start();
		}
		$_SESSION = array();
		// Swipe via memory
		if (ini_get("session.use_cookies")) {
			// Prepare and swipe cookies
			$params = session_get_cookie_params();
			// clear cookies and sessions
			setcookie(session_name(), '', time() - 42000,
			$params["path"], $params["domain"],
			$params["secure"], $params["httponly"]
			);
		}
		ini_set('session.gc_max_lifetime', 0);
		ini_set('session.gc_probability', 1);
		ini_set('session.gc_divisor', 1);

		session_destroy();

		$ok = Version::runUpdateProcess($pdo, TAB_PREFIX, MYSQL_DB, null,false);
		if ($ok["status"] != "OK") {
			echo json_encode($ok);
			return;
		}

		$sql = "SELECT name FROM %config% WHERE name=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array("timezone"));
		$row = $stmt->fetchObject();
		if ($stmt->rowCount() == 0) {
			$timezone = DbUtils::getTimeZone();
			$this->changeOneConfigDbItem($pdo, "timezone", $timezone);
		}

		echo json_encode(self::optimizeCore($pdo));
	}
	
	private function createTablesAndUpdateUntilVersion($pdo,$basedb,$version) {
		$basedb->dropTables($pdo);
		
		$basedb->createAndIntializeTables($pdo,'.',0,'Euro',  DbUtils::getTimeZone());
		
		Version::runUpdateProcess($pdo, TAB_PREFIX, MYSQL_DB, $version,false);

	}
	
	private function restoreDemoFromZip($pdo) {
		// TO BE RELACED BY DEMO
	}
	
	private function restoreFromJson($pdo,$content) {
		$binaryFields = array("signature","img","setting","content");
		
		$basedb = new Basedb();
		$basedb->setPrefix(TAB_PREFIX);
		$basedb->setTimeZone(DbUtils::getTimeZone());
		
		$pdo->beginTransaction();

		$dbContent = json_decode($content,true);
		
		$context = $this->getContextOfImportedJsonFile($dbContent);

		$bakVersion = $context[0];
		$tableKey = $context[1];
		$fieldKey = $context[2];
		$contentKey = $context[3];
		$valueKey = $context[4];
		
		if ((CommonUtils::startsWith($bakVersion, "1.0")) || (CommonUtils::startsWith($bakVersion, "1.1")) || (CommonUtils::startsWith($bakVersion, "1.2"))) {
			echo json_encode(array("status" => "ERROR","msg" => "Backup hat eine zu frühe Version zum Import ($bakVersion)."));
			exit();
		}
		
		$this->createTablesAndUpdateUntilVersion($pdo, $basedb, $bakVersion);
		
		$typeIsOnlyConfig = true;
		
		self::doSql($pdo, "SET foreign_key_checks = 0", null);
		
		foreach($dbContent as $table) {
			$tablename = "%" . $table[$tableKey] . "%";
			
			$sql = "DELETE FROM $tablename";
			CommonUtils::execSql($pdo, $sql, null);
			
			$tablecontent = $table[$contentKey];

			if ($table[$tableKey] == "queue") {
				$typeIsOnlyConfig = false;
			}
			
			foreach($tablecontent as $row) {
				$cols = array();
				$vals = array();
				$quests = array();
				foreach ($row as $field) {
					$fieldname = $field[$fieldKey];
					$cols[] = $fieldname;
					if (in_array($fieldname, $binaryFields) && (!is_null($field[$valueKey]))  ) {
						$vals[] = base64_decode($field[$valueKey]);
					} else {
						$vals[] = $field[$valueKey];
					}					
					
					$quests[] = '?';
				}
				$colstr = implode(",",$cols);
				
				$queststr = implode(",",$quests);
				$sql = "INSERT INTO $tablename ($colstr) VALUES ($queststr)";
				$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));

				try {
				    $stmt->execute($vals);
				} catch (Exception $e) {
					$errorMsg = $e->getMessage();
				}
			}
		}
		
		if (!$typeIsOnlyConfig) {
			HistFiller::insertRestoreHistEntry($pdo);
		}

		
		$basedb->signLastBillid($pdo);
		
		self::doSql($pdo, "SET foreign_key_checks = 1", null);
				
		$pdo->commit();
		
		$this->completeImportProcess($pdo);
	}
	
	private function restoreFromZip($pdo,$zipFile) {
		$tmpdir = CommonUtils::getConfigValue($pdo, 'tmpdir', '');
		if ($tmpdir == '') {
			echo json_encode(array("status" => "ERROR","msg" => "Zip-Files können nur importiert werden, wenn ein PHP Temp. Directory konfiguriert ist."));
			exit();
		}
		$zip = new ZipArchive;

		$jsonFiles = array();
		if ($zip->open($zipFile) == TRUE) {
			for ($i = 0; $i < $zip->numFiles; $i++) {
				$jsonFiles[] = $zip->getNameIndex($i);
			}
			$zip->extractTo($tmpdir, $jsonFiles);
			$zip->close();
			
			
		} else {
			echo json_encode(array("status" => "ERROR","msg" => "Hochgeladenes Zip-File kann nicht geöffnet werden."));
			exit();
		}
		$binaryFields = array("signature","img","setting","content");
		
		$basedb = new Basedb();
		$basedb->setPrefix(TAB_PREFIX);
		$basedb->setTimeZone(DbUtils::getTimeZone());

		$bakVersion = file_get_contents($tmpdir . "/version");
		
		if ((CommonUtils::startsWith($bakVersion, "1.0")) || (CommonUtils::startsWith($bakVersion, "1.1")) || (CommonUtils::startsWith($bakVersion, "1.2"))) {
			echo json_encode(array("status" => "ERROR","msg" => "Backup hat eine zu frühe Version zum Import ($bakVersion)."));
			exit();
		}
		
		$pdo->beginTransaction();
		
		$this->createTablesAndUpdateUntilVersion($pdo, $basedb, $bakVersion);
		
		$typeIsOnlyConfig = true;
		
		self::doSql($pdo, "SET foreign_key_checks = 0", null);
		
		foreach($jsonFiles as $table) {
			if ($table == "version") {
				continue;
			}
			
			$tablename = "%" . $table . "%";
			
			$sql = "DELETE FROM $tablename";
			CommonUtils::execSql($pdo, $sql, null);
			
			$tablecontent = json_decode(file_get_contents($tmpdir . "/" . $table),true);

			if ($table == "queue") {
				$typeIsOnlyConfig = false;
			}
			
			foreach($tablecontent as $row) {
				$cols = array();
				$vals = array();
				$quests = array();
				foreach ($row as $field) {
					try {
						$fieldname = $field['f'];
						$cols[] = $fieldname;
						if (in_array($fieldname, $binaryFields) && (!is_null($field['v']))) {
							$vals[] = base64_decode($field['v']);
						} else {
							$vals[] = $field['v'];
						}					

						$quests[] = '?';
					} catch (Exception $ex) { 
						
						echo $ex->getMessage();
						exit;
					}
				}
				$colstr = implode(",",$cols);
				
				$queststr = implode(",",$quests);
				$sql = "INSERT INTO $tablename ($colstr) VALUES ($queststr)";
				$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));

				try {
				    $stmt->execute($vals);
				} catch (Exception $e) {
					$errorMsg = $e->getMessage();
				}
			}
		}
		
		foreach($jsonFiles as $table) {
			unlink($tmpdir . "/" . $table);
		}
		
		if (!$typeIsOnlyConfig) {
			HistFiller::insertRestoreHistEntry($pdo);
		}

		self::doSql($pdo, "SET foreign_key_checks = 1", null);
		
		$basedb->signLastBillid($pdo);
		
		$pdo->commit();
		
		$this->completeImportProcess($pdo);
	}
	
	private function shutdown() {
		try {
			if (substr(php_uname(), 0, 7) == "Windows"){
				$comd = "shutdown /s /t 10";
				pclose(popen("start /B ". $cmd, "r"));
			}
			else {
				chmod("shutdown.bat", "700");
				$cmd = "sh < shutdown.bat";
				exec($cmd . " > /dev/null &");
			}
			echo json_encode(array("status" => "OK"));
		} catch(Exception $e) {
			echo json_encode(array("status" => "ERROR", "code" => ERROR_SCRIPT_NOT_EXECUTABLE, "msg" => ERROR_SCRIPT_NOT_EXECUTABLE_MSG));
		}
		
	}
	
	public static function optimizeCore($pdo) {
		set_time_limit(60 * 20);
		try {
			self::doSql($pdo, "OPTIMIZE TABLE %queue%", null);
			self::doSql($pdo, "OPTIMIZE TABLE %billproducts%", null);
			self::doSql($pdo, "OPTIMIZE TABLE %products%", null);
			self::doSql($pdo, "OPTIMIZE TABLE %prodimages%", null);
			self::doSql($pdo, "OPTIMIZE TABLE %extrasprods%", null);
			self::doSql($pdo, "OPTIMIZE TABLE %queueextras%", null);
			self::doSql($pdo, "OPTIMIZE TABLE %log%", null);
			self::doSql($pdo, "OPTIMIZE TABLE %roles%", null);
			return array("status" => "OK");
		} catch (Exception $ex) {
			return array("status" => "ERROR", "code" => ERROR_COMMAND_ERROR, "msg" => ERROR_COMMAND_ERROR_MSG);
		}
	}
	
	private function optimize() {
		$pdo = DButils::openDbAndReturnPdoStatic();
		$ok = self::optimizeCore($pdo);
		echo json_encode($ok);
	}

	private static function getForeignKeyName($pdo,$fromtable,$totable,$dbname,$default = null) {
	    $foreignKey = null;
	    try {
		$sql = "SELECT constraint_name as foreignkey FROM information_schema.REFERENTIAL_CONSTRAINTS WHERE constraint_schema = '$dbname' AND table_name = '%$fromtable%' AND REFERENCED_TABLE_NAME='%$totable%'";
		$test = DbUtils::substTableAlias($sql);
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute();
		$result = $stmt->fetchAll();
		if (count($result) != 1) {
		    return $default;
		}
		$foreignKey = $result[0]["foreignkey"];
	    } catch (Exception $e) {
		return $default;
	    }
	    
	    return $foreignKey;
	}
	
	private function golive() {
		set_time_limit(60*10);
		$pdo = DButils::openDbAndReturnPdoStatic();
		try {
			$billprodref_fk = self::getForeignKeyName($pdo, 'billproducts', 'bill', MYSQL_DB);
			$queuebillref_fk = self::getForeignKeyName($pdo, 'queue', 'bill', MYSQL_DB);
			$billclosingref_fk = self::getForeignKeyName($pdo, 'bill', 'closing', MYSQL_DB);
			$billbillref_fk = self::getForeignKeyName($pdo, 'bill', 'bill', MYSQL_DB);
			$cuslogbillref_fk = self::getForeignKeyName($pdo, 'customerlog', 'bill', MYSQL_DB);
		} catch (Exception $ex) {
			echo json_encode(array("status" => "ERROR", "code" => ERROR_COMMAND_ERROR, "msg" => ERROR_COMMAND_ERROR_MSG . " - impossible to get foreign keys: $e"));
		}
		
	    try {
		self::doSql($pdo, "DELETE FROM %taskhist%", null);
		self::doSql($pdo, "DELETE FROM %tasks%", null);
		
		self::doSql($pdo, "DELETE FROM %customerlog%", null);
		
		self::doSql($pdo, "DELETE FROM %times%", null);
		
		self::doSql($pdo, "DELETE FROM %recordsqueue%", null);
		self::doSql($pdo, "DELETE FROM %records%", null);
		    
		self::doSql($pdo, "DELETE FROM %hist%", null);
		self::doSql($pdo, "DELETE FROM %histprod%", null);
		self::doSql($pdo, "DELETE FROM %histconfig%", null);
		self::doSql($pdo, "DELETE FROM %histuser%", null);
		
		HistFiller::readUserTableAndSendToHist($pdo);
		
		$products = new Products();
		$menu = $products->getSpeisekarte($pdo);
		if ($menu['status'] != "OK") {
		    echo json_encode(array("status" => "ERROR", "code" => ERROR_COMMAND_ERROR, "msg" => ERROR_COMMAND_ERROR_MSG));
		    return;
		} else {
		    self::doSql($pdo, "SET foreign_key_checks = 0;", null);
		    self::doSql($pdo, "DELETE FROM %queueextras%", null);
		    self::doSql($pdo, "DELETE FROM %extrasprods%", null);
		    self::doSql($pdo, "DELETE FROM %extras%", null);
		    self::doSql($pdo, "DELETE FROM %billproducts%", null);
		    self::doSql($pdo, "DELETE FROM %queue%", null);
		    self::doSql($pdo, "DELETE FROM %printjobs%", null);
		    self::doSql($pdo, "DELETE FROM %bill%", null);
		    self::doSql($pdo, "DELETE FROM %ratings%", null);	    
		    self::doSql($pdo, "DELETE FROM %closing%", null);
		    
		    self::doSql($pdo, "SET foreign_key_checks = 1;", null);
		    
		    $ret = $this->fillSpeisekarteCore($pdo, $menu['msg']);
		    
		    self::doSql($pdo, "DELETE FROM %products% WHERE removed is not null", null);
		    self::doSql($pdo, "SET foreign_key_checks = 0;", null);
		    self::doSql($pdo, "DELETE FROM %prodtype% WHERE removed is not null", null);
		    self::doSql($pdo, "SET foreign_key_checks = 1;", null);
		    
		    if ($ret["status"] != "OK") {
			echo json_encode(array("status" => "ERROR", "code" => ERROR_COMMAND_ERROR, "msg" => ERROR_COMMAND_ERROR_MSG));
			return;
		    }
		    HistFiller::readAllProdsAndFillHistByDb($pdo);
		    
		    self::doSql($pdo, "DELETE w FROM %histprod% w INNER JOIN %hist% e ON refid=w.id WHERE action='4'", null);
		    self::doSql($pdo, "DELETE FROM %hist% where action='4'", null);
		}
		
		self::doSql($pdo, "alter table %bill% drop foreign key $billbillref_fk", null);
		self::doSql($pdo, "alter table %customerlog% drop foreign key $cuslogbillref_fk", null);
		self::doSql($pdo, "alter table %billproducts% drop foreign key $billprodref_fk", null);
		self::doSql($pdo, "alter table %queue% drop foreign key $queuebillref_fk", null);
		self::doSql($pdo, "ALTER TABLE %bill% DROP id", null);
		self::doSql($pdo, "ALTER TABLE %bill% ADD id INT (10) NOT NULL AUTO_INCREMENT PRIMARY KEY FIRST", null);
		self::doSql($pdo, "ALTER TABLE %bill% ADD CONSTRAINT $billbillref_fk FOREIGN KEY (ref) REFERENCES %bill%(id)", null);
		self::doSql($pdo, "ALTER TABLE %customerlog% ADD CONSTRAINT $cuslogbillref_fk FOREIGN KEY (billid) REFERENCES %bill%(id)", null);
		self::doSql($pdo, "ALTER TABLE %billproducts% ADD CONSTRAINT $billprodref_fk FOREIGN KEY (billid) REFERENCES %bill%(id)", null);
		self::doSql($pdo, "ALTER TABLE %queue% ADD CONSTRAINT $queuebillref_fk FOREIGN KEY (billid) REFERENCES %bill%(id)", null);
		self::doSql($pdo, "alter table %bill% drop foreign key $billclosingref_fk", null);
		self::doSql($pdo, "ALTER TABLE %closing% DROP id", null);
		self::doSql($pdo, "ALTER TABLE %closing% ADD id INT (10) NOT NULL AUTO_INCREMENT PRIMARY KEY FIRST", null);
		self::doSql($pdo, "ALTER TABLE %bill% ADD CONSTRAINT $billclosingref_fk FOREIGN KEY (closingid) REFERENCES %closing%(id)", null);

		$basedb = new Basedb();
		$basedb->setPrefix(TAB_PREFIX);
		$basedb->setTimeZone(DbUtils::getTimeZone());
		$basedb->signLastBillid($pdo);
		
		$histFiller = new HistFiller();
		$histFiller->readConfigTableAndSendToHist();
		
		self::doSql($pdo, "DELETE FROM %resttables% WHERE removed is not null", null);
		self::doSql($pdo, "DELETE FROM %room% WHERE removed is not null", null);
		
		self::doSql($pdo, "DELETE FROM %reservations%", null);
		self::doSql($pdo, "DELETE FROM %groupcustomer%", null);
		self::doSql($pdo, "DELETE FROM %vacations%", null);
		self::doSql($pdo, "DELETE FROM %groups%", null);
		self::doSql($pdo, "DELETE FROM %customers%", null);
		Workreceipts::resetWorkReceiptId($pdo);
		
		echo json_encode(array("status" => "OK"));
	    } catch(Exception $e) {
		    echo json_encode(array("status" => "ERROR", "code" => ERROR_COMMAND_ERROR, "msg" => ERROR_COMMAND_ERROR_MSG . " - Error message: $e"));
	    }
	}
	
	private static function doSql($pdo,$sql,$params) {
	    $stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
	    if (is_null($params)) {
		$stmt->execute();
	    } else {
		$stmt->execute($params);
	    }
	}
}