<?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');

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")),
		"updateUser"	    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("manager_or_admin")),
		"deleteUser"	    => 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),
		"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),
		"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),
		"shutdown"			=> array("loggedin" => 1, "isadmin" => 1, "rights" => null),
		"backup"			=> array("loggedin" => 1, "isadmin" => 1, "rights" => null),
		"restore"			=> array("loggedin" => 1, "isadmin" => 1, "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),
		
		"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),
		"setApplyExtrasBtnPos"		=> 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),
		"getApplyExtrasBtnPos"		=> array("loggedin" => 1, "isadmin" => 0, "rights" => null),
		"isInstalled"			=> array("loggedin" => 0, "isadmin" => 0, "rights" => null),
	    
		"isPrinterServerActive"		=> 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'] == 0) {
			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 (($_SESSION['is_admin'] == 1) || ($_SESSION['right_manager'] == 1)) {
			    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 == 'setTime') {
		    $this->setTime($_POST['day'],$_POST['month'],$_POST['year'],$_POST['hour'],$_POST['minute']);
	    } else if ($command == 'createNewUser') {
		    $this->createNewUser();
	    } else if ($command == 'updateUser') {
		    $this->updateUser();
	    } else if ($command == 'deleteUser') {
		    $this->deleteUser($_POST['userid']);
	    } 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 == '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 == '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 == 'restore') {
		    $this->restore();
		    return;
	    } else if ($command == 'golive') {
		    $this->golive();
		    return;
	    } else if ($command == 'shutdown') {
		    $this->shutdown();
		    return;
	    } else if ($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 ($command == 'setKeepTypeLevel') {
		    if ($this->isUserAlreadyLoggedInForPhp()) {
			    $this->setKeepTypeLevel($_POST['keeptypelevel']);
		    }
	    } else if ($command == 'setApplyExtrasBtnPos') {
		    if ($this->isUserAlreadyLoggedInForPhp()) {
			    $this->setExtrasApplyBtnPos($_POST['applyextrasbtnpos']);
		    }
	    } 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 == 'getKeepTypeLevel') {
		    if ($this->isUserAlreadyLoggedInForPhp()) {
			    $this->getKeepTypeLevel();
		    }
	    } else if ($command == 'getApplyExtrasBtnPos') {
		    if ($this->isUserAlreadyLoggedInForPhp()) {
			    $this->getApplyExtrasBtnPos();
		    }
	    } else if ($command == 'isInstalled') {
		    $this->isInstalled();
	    } else if ($command == 'isPrinterServerActive') {
		$this->isPrinterServerActive();
	    }
	    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 {
			// not defined -> it must be version 1.0.3 or lower --> since this is file of 1.0.4: not installed...
			echo json_encode("No");
		}
	}
	
	private function isPrinterServerActive() {
	    $TIMEOUT = 20;
	    $active = json_encode(array("status" => "OK","msg" => 1));
	    $notActive = json_encode(array("status" => "OK","msg" => 0));
	    // check printmode
	    $pdo = DbUtils::openDbAndReturnPdoStatic();
	    $printMode = CommonUtils::getConfigValue($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']) {
			// no user logged in
			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;
		}
	}
	
	// for the login mask - if user is authenticated then the first page works different
	function tryAuthenticate($userid,$password,$modus,$day,$month,$year,$hour,$minute,$unixtime) {
		
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$authenticated = false;
		$sql = "SELECT * FROM %user% WHERE id=? AND active='1'";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($userid));
		$result = $stmt->fetchAll();

		$numberOfEntries = count($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;
			 
			// now read the rights of the user

			$_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_manager'],
					$zeile['right_closing']);
			$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_manager'] = false;
				$_SESSION['right_closing'] = 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);
				$_SESSION['right_manager'] = ($zeile['right_manager'] == 1 ? true : false);
				$_SESSION['right_closing'] = ($zeile['right_closing'] == 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_manager'], $_SESSION['right_closing']);
			
			$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");
			$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");
			echo json_encode(array("status" => "NO"));
		}
	}
	
	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 getKeepTypeLevel() {
		self::getUserValue('keeptypelevel',1);
	}
	
	function getApplyExtrasBtnPos() {
		self::getUserValue('extrasapplybtnpos', 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',$preferValue);
	}
	function setKeepTypeLevel($preferValue) {
		self::setUserValue('keeptypelevel',$preferValue);
	}
	function setExtrasApplyBtnPos($preferValue) {
		self::setUserValue('extrasapplybtnpos',$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'","'waitergopayprint'"));
		$sql = "select name,setting FROM %config% WHERE name in ($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 FROM %user% WHERE id=?";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
			$stmt->execute(array($_SESSION['userid']));
			$row = $stmt->fetchObject();
		}

		$buttonSizes = self::getButtonSizesCore($pdo);
		
		$jsonMenuItems = $this->getJsonMenuItemsAndVersionCore();
		
		$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,
				"isUserLoggedIn" => 1,
				"jsonMenuItemsAndVersion" => $jsonMenuItems
		);
		echo json_encode($retVal);
	}
	
	
	public function getGeneralConfigItems($forHtml,$pdo) {
		$userLoggedIn = $this->isUserAlreadyLoggedInForPhp();
		if ($userLoggedIn || (!$forHtml)) {
			
			if (is_null($pdo)) {
				$pdo = $this->dbutils->openDbAndReturnPdo();
			}
			
			$companyInfo = CommonUtils::getConfigValue($pdo,"companyinfo",null);
			$rectemplate = CommonUtils::getConfigValue($pdo,"rectemplate",null);
			$foodtemplate = CommonUtils::getConfigValue($pdo,"foodtemplate",null);
			$drinktemplate = CommonUtils::getConfigValue($pdo,"drinktemplate",null);
			$decpoint = CommonUtils::getConfigValue($pdo,"decpoint",null);
			$version = CommonUtils::getConfigValue($pdo,"version",null);
			$payprinttype = CommonUtils::getConfigValue($pdo,"payprinttype",null);
			$cancelunpaidcode = CommonUtils::getConfigValue($pdo,"cancelunpaidcode",null);
			$tax = CommonUtils::getConfigValue($pdo,"tax",null);
			$togotax = CommonUtils::getConfigValue($pdo,"togotax",null);
			$taxaustrianormal = CommonUtils::getConfigValue($pdo,"taxaustrianormal",null);
			$taxaustriaerm1 = CommonUtils::getConfigValue($pdo,"taxaustriaerm1",null);
			$taxaustriaerm2 = CommonUtils::getConfigValue($pdo,"taxaustriaerm2",null);
			$taxaustriaspecial = CommonUtils::getConfigValue($pdo,"taxaustriaspecial",null);
			$serverurl = CommonUtils::getConfigValue($pdo,"serverurl",null);
			$email = CommonUtils::getConfigValue($pdo,"email",null);
			$bigfontworkreceipt = CommonUtils::getConfigValue($pdo,"bigfontworkreceipt",null);
			$prominentsearch = CommonUtils::getConfigValue($pdo,"prominentsearch",null);
			$discount1 = CommonUtils::getConfigValue($pdo,"discount1",null);
			$discount2 = CommonUtils::getConfigValue($pdo,"discount2",null);
			$discount3 = CommonUtils::getConfigValue($pdo,"discount3",null);
			$austria = CommonUtils::getConfigValue($pdo,"austria",null);
			$digigopaysetready = CommonUtils::getConfigValue($pdo,"digigopaysetready",1);
			$waitergopayprint = CommonUtils::getConfigValue($pdo,"waitergopayprint",0);
			$oneprodworkreceipts = CommonUtils::getConfigValue($pdo,"oneprodworkreceipts",0);
			$digiprintwork = CommonUtils::getConfigValue($pdo,"digiprintwork",1);
			$groupworkitems = CommonUtils::getConfigValue($pdo,"groupworkitems",1);
			$receiveremail = CommonUtils::getConfigValue($pdo,"receiveremail","");
			$emailbadrating = CommonUtils::getConfigValue($pdo,"emailbadrating","");
			$emailratingcontact = CommonUtils::getConfigValue($pdo,"emailratingcontact","");
			$billlanguage = CommonUtils::getConfigValue($pdo,"billlanguage",null);
			$currency = CommonUtils::getConfigValue($pdo,"currency",null);
			$receiptfontsize = CommonUtils::getConfigValue($pdo,"receiptfontsize",null);
			$reservationnote = CommonUtils::getConfigValue($pdo,"reservationnote",null);
			$paymentconfig = CommonUtils::getConfigValue($pdo,"paymentconfig",0);
			$workflowconfig = CommonUtils::getConfigValue($pdo,"workflowconfig",0);
			$addreceipttoprinter = CommonUtils::getConfigValue($pdo,"addreceipttoprinter","");
			
			$smtphost = "";
			$smtpauth = 1;
			$smtpuser = "";
			$smtppass = "";
			$smtpsecure = 1;
			$smtpport = "";
		
			if ($_SESSION['is_admin'] || $_SESSION['right_manager']) {
			    $smtphost = CommonUtils::getConfigValue($pdo,"smtphost","");
			    $smtpauth = CommonUtils::getConfigValue($pdo,"smtpauth",1);
			    $smtpuser = CommonUtils::getConfigValue($pdo,"smtpuser","");
			    $smtppass = CommonUtils::getConfigValue($pdo,"smtppass","");
			    $smtpsecure = CommonUtils::getConfigValue($pdo,"smtpsecure",1);
			    $smtpport = CommonUtils::getConfigValue($pdo,"smtpport","");
			}
			
			$paydeskid = CommonUtils::getConfigValue($pdo,"paydeskid","");
			$aeskey = CommonUtils::getConfigValue($pdo,"aeskey","");
			$certificatesn = CommonUtils::getConfigValue($pdo,"certificatesn","");
			$webimpressum = CommonUtils::getConfigValue($pdo,"webimpressum","");
			
			$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);
			}
			
			date_default_timezone_set(DbUtils::getTimeZone());
			$now = getdate();
			
			$retVal = array("companyinfo" => $companyInfo, "rectemplate" => $rectemplate, "foodtemplate" => $foodtemplate, "drinktemplate" => $drinktemplate,
					"version" => $version, "decpoint" => $decpoint,
					"serverurl" => $serverurl, "email" => $email, "receiveremail" => $receiveremail, "billlanguage" => $billlanguage,
					"payprinttype" => $payprinttype, "tax" => $tax, "togotax" => $togotax, "currency" => $currency,
					"taxaustrianormal" => $taxaustrianormal, "taxaustriaerm1" => $taxaustriaerm1, "taxaustriaerm2" => $taxaustriaerm2, "taxaustriaspecial" => $taxaustriaspecial,
					"userlanguage" => $userlang, "receiptprinter" => $receiptprinter,
					"receiptfontsize" => $receiptfontsize, "reservationnote" => $reservationnote, "paymentconfig" => $paymentconfig,
					"workflowconfig" => $workflowconfig, "emailratingcontact" => $emailratingcontact,"emailbadrating" => $emailbadrating,
					"rightchangeprice" => $right_changeprice, "bigfontworkreceipt" => $bigfontworkreceipt, "prominentsearch" => $prominentsearch,"groupworkitems" => $groupworkitems,
					"sday" => $now["mday"],"smonth" => $now["mon"], "syear" => $now["year"], "shour" => $now["hours"], "smin" => $now["minutes"],
					"smtphost" => $smtphost,"smtpauth" => $smtpauth,"smtpuser" => $smtpuser,"smtppass" => $smtppass,"smtpsecure" => $smtpsecure,"smtpport" => $smtpport,
					"webimpressum" => $webimpressum, "cancelunpaidcode" => $cancelunpaidcode, "discount1" => $discount1,"discount2" => $discount2,"discount3" => $discount3,
					"austria" => $austria, "digigopaysetready" => $digigopaysetready, "waitergopayprint" => $waitergopayprint, "oneprodworkreceipts" => $oneprodworkreceipts,
					"digiprintwork" => $digiprintwork,
					"paydeskid" => $paydeskid, "aeskey" => $aeskey, "certificatesn" => $certificatesn, "addreceipttoprinter" => $addreceipttoprinter
			);

			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'],$_SESSION['right_manager'],$_SESSION['right_closing']);
			$right_rating = $_SESSION['right_rating'];
			
			if (self::isOnlyRatingUser($rights, $right_rating, true)) {
				// rating user always goes into that view - important setting after creation of user
				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";
					    }
					}
				}
			}
			
			// test if user has still the right to go into that view
			$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',
					"waiterdesktop.php" => 'right_waiter'
					);
			
			$valid = false;
			if (($view == 'preferences.html') || ($view == 'feedback.html')) {
				// always ok
				$valid = true;
			} else if ($view == 'manager.html') {
				if (($_SESSION['is_admin'] == 1) || ($_SESSION['right_manager'] == 1) || ($_SESSION['right_closing'] == 1)) {
					$valid = true;
				}
			} else {
				if (($view == "index.html") ||  ($_SESSION[$mapping[$view]] == 1)) {
					$valid = true;
				}
			}
			if ($valid == false) {
				$view = "preferences.html";
			}
			
			echo json_encode($view . "?v=1.2.14");
		}
	}
	
	// for client request
	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']) || !$_SESSION['angemeldet']) {
			// no user logged in
			return false;
		} else {
			return ($_SESSION[$whichRight]);
		}
	}
	
	// for internal request
	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) {
		$sql = "DELETE FROM %extrasprods%";
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute();

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

		return $ret;
	}
	
	private function fillSampleContent()
	{
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		// first remove previous content, then fill the SQL file
		$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() {
		echo json_encode($this->getJsonMenuItemsAndVersionCore());
	}
	
	/*
	 * Return all the entries for the main menu (the modules)
	 */
	private function getJsonMenuItemsAndVersionCore() {
		if(session_id() == '') {
			session_start();
		}
		$mainMenu = array();
		$currentUser = "";
		$waiterMessage = "";
		$loggedIn = true;
		if (!isset($_SESSION['angemeldet']) || !$_SESSION['angemeldet']) {
			// no user logged in
			$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");
			$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");
			$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_manager'],
					$_SESSION['right_closing']);
			$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=1.2.14"); };
			    } else {
				if ($_SESSION['right_waiter']) { $mainMenu[] = array("name" => $waiterdesktxt[$lang], "link" => "waiterdesktop.php?v=1.2.14"); };
			    }
			    if ($_SESSION['right_kitchen']) { $mainMenu[] = array("name" => $kitchentxt[$lang], "link" => "kitchen.html?v=1.2.14"); };
			    if ($_SESSION['right_bar']) { $mainMenu[] = array("name" => "Bar", "link" => "bar.html?v=1.2.14"); };
			    if ($_SESSION['right_supply']) { $mainMenu[] = array("name" => $supplytxt[$lang], "link" => "supplydesk.html?v=1.2.14"); };
			    if ($_SESSION['modus'] == 0) {
				if ($_SESSION['right_paydesk']) { $mainMenu[] = array("name" => $paydesktxt[$lang], "link" => "paydesk.html?v=1.2.14"); };
			    }
			    if ($_SESSION['right_statistics']) { $mainMenu[] = array("name" => $stattxt[$lang], "link" => "reports.html?v=1.2.14"); };
			    if ($_SESSION['right_bill']) { $mainMenu[] = array("name" => $bontxt[$lang], "link" => "bill.html?v=1.2.14"); };
			    if ($_SESSION['right_products']) { $mainMenu[] = array("name" => $prodtxt[$lang], "link" => "products.html?v=1.2.14");	};
			    if ($_SESSION['right_reservation']) { $mainMenu[] = array("name" => $restxt[$lang], "link" => "reservation.html?v=1.2.14"); };
			    if ($_SESSION['right_rating']) { $mainMenu[] = array("name" => $ratingtxt[$lang], "link" => "rating.html?v=1.2.14"); };
			    if ($_SESSION['right_manager'] || $_SESSION['is_admin'] || $_SESSION['right_closing']) { $mainMenu[] = array("name" => $admintxt[$lang], "link" => "manager.html?v=1.2.14"); };
			    $mainMenu[] = array("name" => $settingtxt[$lang], "link" => "preferences.html?v=1.2.14");
			    $mainMenu[] = array("name" => "Feedback", "link" => "feedback.html?v=1.2.14");
			}
			
			$mainMenu[] = array("name" => $logout[$lang], "link" => "logout.php");
			$currentUser = $_SESSION['currentuser'];
			
			$waiterMessage = $this->getMessage(null, "waitermessage");
		}
		// CAUTION: change version also in config.txt!!!
		$mainMenuAndVersion = array ("version" => "OrderSprinter 1.2.14", 
				"user" => $currentUser, 
				"menu" => $mainMenu, 
				"waitermessage" => $waiterMessage,
				"loggedin" => ($loggedIn ? 1:0)
		);
		return($mainMenuAndVersion);
	}
	
	function getUserList() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$sql = "SELECT * FROM %user% WHERE active='1' ORDER BY is_admin";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute();
		$result = $stmt->fetchAll();
		echo json_encode($result);
	}
	
	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 createNewUser() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		
		$username = $_POST['username'];
		$isAdmin = $_POST['isAdmin'];
		$password = $_POST['password'];
		$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 {
			// create the new user
			
			if(session_id() == '') {
				session_start();
			}			
			$lang = $_SESSION['language'];

			if ($isAdmin && !($this->isCurrentUserAdmin())) {
				echo json_encode(array("status" => "ERROR", "code" => ERROR_COMMAND_NOT_ADMIN, "msg" => ERROR_COMMAND_NOT_ADMIN_MSG));
				return;
			} else {
				// instead if password_hash (PHP > 5.5) use MD5...
				$password_hash = md5($password);
				
				$keys = array('id','userpassword','language');
				$vals = array(null,$password_hash,$lang);
				$quests = array('?','?','?');
				
				foreach(DbUtils::$userCols as $userCol) {
				    if (!is_null($userCol["new"])) {
					$quests[] = '?';
					$keys[] = $userCol["col"];
					$vals[] = $_POST[$userCol['new']];
				    } else if (isset($userCol["default"])) {
					$quests[] = '?';
					$keys[] = $userCol["col"];
					$vals[] = $userCol["default"];
				    }
 				}
				
				$keysStr = join(",",$keys);
				$questsStr = join(",",$quests);
				$userInsertSql = "INSERT INTO %user% (" . $keysStr . ") VALUES(" . $questsStr . ")";
				$stmt = $pdo->prepare(DbUtils::substTableAlias($userInsertSql));
				$stmt->execute($vals);

				$lastId = $pdo->lastInsertId();

				echo json_encode(array("status" => "OK"));
			}
		}
		
		// now this has to be logged in the history tables...
		HistFiller::createUserInHist($pdo,$lastId);
	}
	
	function getPayPrintType() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$this->sendJsonValueFromConfigTable($pdo,'payprinttype');
	}
	
	function getPayments() {
		if(session_id() == '') {
			session_start();
		}
		$pdo = $this->dbutils->openDbAndReturnPdo();
		
		$lang = $_SESSION['language'];
		$sql = "SELECT id,name FROM %payment%";
		if ($lang == 1) {
			$sql = "SELECT id,name_en as name FROM %payment%";
		} else if ($lang == 2) {
			$sql = "SELECT id,name_esp as name FROM %payment%";
		}
		
		$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[] = $entry;
		}
		echo json_encode($retArray);
	}
	
	function sendJsonValueFromConfigTable($pdo,$whichValue) {
		$theVal = CommonUtils::getConfigValue($pdo, $whichValue, "");
		if ($theVal == null) {
			echo json_encode("");
		} else {
			echo json_encode($theVal);
		}
	}

	private function deletelogo() {
		$pdo = $this->dbutils->openDbAndReturnPdo();
		$this->changeOneConfigDbItem($pdo, "logoimg", null,"%logo%",false);
		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 = $this->dbutils->openDbAndReturnPdo();

		$this->changeOneConfigDbItem($pdo, "logoimg", $content,"%logo%",false);

		header("Location: ../infopage.html?i=manager.html=Import_war_erfolgreich."); /* Browser umleiten */
		exit;
	}
	
	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),
				"rectemplate" => array("dbcol" => "rectemplate","checknum" => 0),
				"foodtemplate" => array("dbcol" => "foodtemplate","checknum" => 0),
				"drinktemplate" => array("dbcol" => "drinktemplate","checknum" => 0),
				"serverUrl" => array("dbcol" => "serverurl","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),
				"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),
				"oneprodworkreceipts" => array("dbcol" => "oneprodworkreceipts","checknum" => 0),
				"digiprintwork" => array("dbcol" => "digiprintwork","checknum" => 0),
				"groupworkitems" => array("dbcol" => "groupworkitems","checknum" => 0),
				"workflowconfig" => array("dbcol" => "workflowconfig","checknum" => 0),
				"receiptfontsize" => array("dbcol" => "receiptfontsize","checknum" => 0),
				"billlanguage" => array("dbcol" => "billlanguage","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),
				"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),
				
				"paydeskid" => array("dbcol" => "paydeskid","checknum" => 0),
				"aeskey" => array("dbcol" => "aeskey","checknum" => 0),
				"certificatesn" => array("dbcol" => "certificatesn","checksum" => 0)
		);
		$problem = false;
		foreach ($changedValues as $aChangeSet) {
			$name = $aChangeSet['name'];
			$aVal = $aChangeSet['value'];
			
			if ($name == "payprinttype") {
				// special care: 1->l 2->s
				if (((string)$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);
			}
			
			$association = $assoc_vals[$name];
			$dbcol = $association["dbcol"];
			$check = $association["checknum"];
			
			if ($check == 1) {
				if (is_numeric($aVal)) {
					$this->changeOneConfigDbItem($pdo,$dbcol,$aVal,"%config%",true);
				} else {
					$problem = true;
				}
			} else {
				$this->changeOneConfigDbItem($pdo,$dbcol,$aVal,"%config%",true);
			}
		}
		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,$theValue,$table,$doHist) {		
		// is the value already there, or has it to be created?
		$sql = "SELECT setting from $table WHERE name=?";

		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($theItem));
		$row = $stmt->fetchObject();
		
		if ($stmt->rowCount() > 0) {
			$sql = "UPDATE $table SET setting=? WHERE name=?";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
			$stmt->execute(array($theValue,$theItem));
		} else {
			$sql = "INSERT INTO `$table` (`id` , `name`,`setting`) VALUES (NULL , ? , ?)";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
			$stmt->execute(array($theItem,$theValue));
		}
		
		if ($doHist) {
			// now this has to be logged in the history tables...
			$this->histfiller->updateConfigInHist($pdo,$theItem, $theValue);
		}
	}
	
	private function findActiveUserWithName($username) {
		$sql_find_id = "SELECT id FROM %user% WHERE active='1' AND username='$username'";
		$pdo = $this->dbutils->openDbAndReturnPdo();
		$stmt_query = $pdo->query($this->dbutils->resolveTablenamesInSqlString($sql_find_id));
		$row =$stmt_query->fetchObject();
		$theUserId = $row->id;
		return $theUserId;
	}
	
	function updateUser() {
		// get the name of the user
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		
		$theUserId = $_POST['userid'];
		$isAdmin = $_POST['isAdmin'];
		$sql = "SELECT username,is_admin FROM %user% WHERE id=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($theUserId));
		$row = $stmt->fetchObject();
		$userToModIsAdmin = $row->is_admin;
		
		$doChangeAdminRights = false;
		if ($isAdmin != $userToModIsAdmin) {
			$doChangeAdminRights = true;
		}

		if ($doChangeAdminRights && !($this->isCurrentUserAdmin())) {
			echo json_encode("noadmin");
		} else {
		    $keys = array();
		    $vals = array();

		    foreach(DbUtils::$userCols as $userCol) {
			if (!is_null($userCol["update"])) {
			    $keys[] = $userCol["col"] . "=?";
			    $vals[] = $_POST[$userCol["update"]];
			}
		    }
		    $vals[] = $theUserId;
		    
		    $keysStr = join(",",$keys);
		    $sql = "UPDATE %user% SET " . $keysStr . " WHERE active='1' AND id=?";
		    $stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		    $stmt->execute($vals);
			
		    HistFiller::updateUserInHist($pdo,$theUserId);

		    echo json_encode("OK");
		}
	}
	
	function deleteUser($theUserId) {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		
		$sql = "SELECT is_admin FROM %user% WHERE active='1' AND id=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($theUserId));
		$row =$stmt->fetchObject();
		$userToDelIsAdmin = ($row->is_admin == 1 ? true : false);
		
		if ($userToDelIsAdmin && !($this->isCurrentUserAdmin())) {
			echo json_encode("noadmin");
		} else {
			$sql = "SELECT count(id) as countid FROM %user% WHERE active='1' AND is_admin='1' AND id <> ?";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
			$stmt->execute(array($theUserId));
			$row = $stmt->fetchObject();
			$numberOfOtherAdmins = $row->countid;

			if (($numberOfOtherAdmins == 0) && $userToDelIsAdmin) {
				echo json_encode("lastadmin");
			} else {
				$userSql = "UPDATE %user% set active='0' WHERE id=?";
				$stmt = $pdo->prepare(DbUtils::substTableAlias($userSql));
				$stmt->execute(array($theUserId));
				
                                HistFiller::updateUserInHist($pdo,$theUserId);
				
				echo json_encode("OK");
			}
		}
	}
	
	function getCurrentUser() {
		if (!isset($_SESSION['angemeldet']) || !$_SESSION['angemeldet']) {
			// no user logged in
			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;
		}
		$sql = "SELECT is_admin FROM %user% WHERE active='1' AND id=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($userid));
		$row = $stmt->fetchObject();
		$userToChgPassIsAdm = false;		
		
		if ($row->is_admin == 1) {
			$userToChgPassIsAdm = true;
		}
		

		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);
			$userSql = "UPDATE %user% set userpassword=? WHERE active='1' AND id=?";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($userSql));
			$stmt->execute(array($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) {
			// allowed to change password
			$newp_hash = md5($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; Tageserfassungsrecht; Managerrechte; Aktiviert\n");
		
		$sql = "SELECT DISTINCT %hist%.id as id,date,";
		$sql .= "userid,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_closing,right_manager,active,";
		$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";
		
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute();
		$result = $stmt->fetchAll();
		
		foreach($result as $zeile) {
			$val1 = $zeile['id'];
			$val2 = $zeile['date'];
			$val3 = $zeile['userid'];
			$val4 = $zeile['username'];
			$val5 = ($zeile['is_admin'] == '1' ? "Ja" : "Nein");
			$val6 = ($zeile['right_waiter'] == '1' ? "Ja" : "Nein");
			$val7 = ($zeile['right_kitchen'] == '1' ? "Ja" : "Nein");
			$val8 = ($zeile['right_bar'] == '1' ? "Ja" : "Nein");
			$val9 = ($zeile['right_supply'] == '1' ? "Ja" : "Nein");
			$val10 = ($zeile['right_paydesk'] == '1' ? "Ja" : "Nein");
			$val11 = ($zeile['right_statistics'] == '1' ? "Ja" : "Nein");
			$val12 = ($zeile['right_bill'] == '1' ? "Ja" : "Nein");
			$val13 = ($zeile['right_products'] == '1' ? "Ja" : "Nein");
			$val14 = ($zeile['right_rating'] == '1' ? "Ja" : "Nein");
			$val15 = ($zeile['right_changeprice'] == '1' ? "Ja" : "Nein");
			$val16 = ($zeile['right_closing'] == '1' ? "Ja" : "Nein");
			$val17 = ($zeile['right_manager'] == '1' ? "Ja" : "Nein");
			$val18 = ($zeile['active'] == '1' ? "Ja" : "Nein");
			$val19 = $zeile['description'];

			echo "$val1; $val2; $val3; $val4; $val5; $val6; $val7; $val8; $val9; $val10;";
			echo "$val11;$val12;$val13;$val14;$val15;$val16;$val17;$val18;$val19\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","products","config","user","comments","histprod","histconfig","histuser","histactions","hist","extras","extrasprods");
	}
	
	private function getAllTablesToBackupRestore() {
		return array("closing","logo","printjobs","ratings","work","payment","room","resttables","tablepos","tablemaps","pricelevel","prodtype","products","config",
				"user","reservations","bill","queue","billproducts","comments","histprod","histconfig","histuser","histactions","hist","extras","extrasprods","queueextras");
	}
	
	private function getAllWithLogsTablesToBackupRestore() {
	    return array("log","closing","logo","printjobs","ratings","work","payment","room","resttables","tablepos","tablemaps","pricelevel","prodtype","products","config",
		"user","reservations","bill","queue","billproducts","comments","histprod","histconfig","histuser","histactions","hist","extras","extrasprods","queueextras");
	}
	
	public function backup($theType,$remoteaccesscode) {
		date_default_timezone_set(DbUtils::getTimeZone());
		$nowtime = date('Y-m-d');

		ini_set('memory_limit', '1000M');
		$pdo = DButils::openDbAndReturnPdoStatic();
		
		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"];
		$fileName = "backup-" . $version . "_" . $nowtime . "-configuration.json";
		if ($theType == "all") {
			$fileName = "backup-" . $version . "_" . $nowtime . "-all.json";
		} else if ($theType == "alllogs") {
		    $fileName = "backup-" . $version . "_" . $nowtime . "-all-logs.json";
		}
		
		if ($theType == "configuration") {
			$tables = $this->getConfigTablesToBackupRestore();
		} else if (($theType == "all") || ($theType == "auto")) {
			HistFiller::insertSaveHistEntry($pdo);
			$tables = $this->getAllTablesToBackupRestore();
		} else {
		    HistFiller::insertSaveHistEntry($pdo);
		    $tables = $this->getAllWithLogsTablesToBackupRestore();
		}

		$binaryFields = array("signature","img","setting","content");
		$dbcontent = array();
		foreach($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();

			$tableContent = array();
			foreach($result as $row) {
				$fieldContent = array();
				foreach($fields as $field) {
					if (in_array($field,$binaryFields)) {
						$aFieldEntry = array("fieldname" => $field,"value" => base64_encode($row[$field]));
					} else {
						$aFieldEntry = array("fieldname" => $field,"value" => $row[$field]);
					}
					$fieldContent[] = $aFieldEntry;
				};
				$tableContent[] = $fieldContent;
			}
			
			$dbcontent[] = array("table" => $table, "content" => $tableContent);
		}

		$pdo->commit();
		
		$retStr = json_encode($dbcontent);

		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();
	}
	
	private function restore() {
		ini_set('memory_limit', '60000M');
		set_time_limit(60*10);

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

		$binaryFields = array("signature","img","setting","content");
		
		$content = file_get_contents($_FILES['userfile']['tmp_name']);
		
		$basedb = new Basedb();
		$basedb->setPrefix(TAB_PREFIX);
		$basedb->setTimeZone(DbUtils::getTimeZone());
		
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$pdo->beginTransaction();
		
		$genInfo = $this->getGeneralConfigItems(false, $pdo);
		$version = $genInfo["version"];
		
		$timezone = DbUtils::getTimeZone();
		
		$basedb->dropTables($pdo);
		
		$basedb->createEmptyTables($pdo);
		
		$dbContent = json_decode($content,true);
		
		$typeIsOnlyConfig = true;
		
		foreach($dbContent as $table) {
			$tablename = "%" . $table['table'] . "%";
			$tablecontent = $table['content'];

			if ($table['table'] == "queue") {
				$typeIsOnlyConfig = false;
			}
			
			if ($table['table'] == "bill") {
				$sql = "SET FOREIGN_KEY_CHECKS = 0";
				$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
				$stmt->execute();
			}
			
			foreach($tablecontent as $row) {
				$cols = array();
				$vals = array();
				$quests = array();
				foreach ($row as $field) {
					$fieldname = $field['fieldname'];
					$cols[] = $fieldname;
					if (in_array($fieldname, $binaryFields)) {
						$vals[] = base64_decode($field['value']);
					} else {
						$vals[] = $field['value'];
					}					
					
					$quests[] = '?';
				}
				$colstr = implode(",",$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) {
				}
			}
			
			if ($table['table'] == "bill") {
				$sql = "SET FOREIGN_KEY_CHECKS = 1";
				$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
				$stmt->execute();
			}
		}
		
		if (!$typeIsOnlyConfig) {
			HistFiller::insertRestoreHistEntry($pdo);
		}

		$basedb->signLastBillid($pdo);
		
		$setVersion = "update %config% set setting=? where name='version'";
		$stmt = $pdo->prepare($basedb->resolveTablenamesInSqlString($setVersion));
		$stmt->execute(array($version));

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

		// logout (by the restore other user or rights may have been applied)
		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();

		header("Location: ../infopage.html?i=index.html=Import_war_erfolgreich."); /* Browser umleiten */
		exit;
	}
	
	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));
		}
		
	}
	
	private function golive() {
	    try {
		$pdo = DButils::openDbAndReturnPdoStatic();
		self::doSql($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($pdo, "alter table %bill% drop foreign key billbillref", null);
		self::doSql($pdo, "alter table %billproducts% drop foreign key billprodref", null);
		self::doSql($pdo, "alter table %queue% drop foreign key queuebillref", null);
		self::doSql($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 FOREIGN KEY (ref) REFERENCES %bill%(id)", null);
		self::doSql($pdo, "ALTER TABLE %billproducts% ADD CONSTRAINT billprodref FOREIGN KEY (billid) REFERENCES %bill%(id)", null);
		self::doSql($pdo, "ALTER TABLE %queue% ADD CONSTRAINT queuebillref FOREIGN KEY (billid) REFERENCES %bill%(id)", null);
		self::doSql($pdo, "alter table %bill% drop foreign key billclosingref", null);
		self::doSql($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 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);
		
		echo json_encode(array("status" => "OK"));
	    } catch(Exception $e) {
		    echo json_encode(array("status" => "ERROR", "code" => ERROR_COMMAND_ERROR, "msg" => ERROR_COMMAND_ERROR_MSG));
	    }
	}
	
	private static function doSql($pdo,$sql,$params) {
	    $stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
	    if (is_null($params)) {
		$stmt->execute();
	    } else {
		$stmt->execute($params);
	    }
	}
}

?>