<?php
// Datenbank-Verbindungsparameter
require_once ('dbutils.php');
require_once ('queuecontent.php');
require_once ('commonutils.php');
require_once ('utilities/userrights.php');
require_once ('utilities/HistFiller.php');
require_once ('utilities/sorter.php');
require_once ('utilities/TypeAndProducts/ProductEntry.php');

class Products {
	var $dbutils;
	var $queue;
	var $commonUtils;
	var $userrights;
	var $histfiller;
	var $sorter;
	
	function __construct() {
		$this->dbutils = new DbUtils();
		$this->queue = new QueueContent();
		$this->commonUtils = new CommonUtils();
		$this->userrights = new Userrights();
		$this->histfiller = new HistFiller();
		$this->sorter = new Sorter();
	}

	function isCmdAllowed($rights) {
		if ($this->userrights->isCmdAllowedForUser($rights)) {
			return true;
		} else {
			echo json_encode(array("status" => "ERROR", "code" => ERROR_NOT_AUTHOTRIZED, "msg" => ERROR_NOT_AUTHOTRIZED_MSG));
			return false;
		}
	}
	
	function handleCommand($command) {		
		
		$cmdArray = array('showDbProducts', 'getMenuLevelUp', 'applySingleProdData', 'createExtra', 'applyExtra', 'delExtra','sortup','sortdown', 'delproduct', 'reassign', 'applyType', 'delType', 'getSingleProdData', 'getSingleTypeData', 'getPriceLevelInfo','setPriceLevelInfo', 'createProduct','createProdType','addGeneralComment','changeGeneralComment','delGeneralComment','upGeneralComment','downGeneralComment');
		if (in_array($command, $cmdArray)) {
			if (!($this->userrights->hasCurrentUserRight('right_products'))) {
				if ($command == 'createProdType') {
					echo json_encode(array("status" => "ERROR", "code" => ERROR_PRODUCTS_NOT_AUTHOTRIZED, "msg" => ERROR_PRODUCTS_NOT_AUTHOTRIZED_MSG));
				} else {
					echo "Benutzerrechte nicht ausreichend!";
				}
				return false;
			}
		}
		
		if($command == 'showDbProducts') {
			$this->showDbProducts();
		} else if ($command == 'getMenu') {
			if ($this->isCmdAllowed(R_PRO)) {
				$this->getMenu($_GET['ref'],null);
			}
		} else if ($command == 'getMenuLevelUp') {
			$this->getMenuLevelUp($_GET['ref']);
		} else if ($command == 'getSpeisekarte') {
			if ($this->userrights->hasCurrentUserRight('is_admin') || ($this->userrights->hasCurrentUserRight('right_manager'))) {
			    $pdo = DbUtils::openDbAndReturnPdoStatic();
			    echo json_encode($this->getSpeisekarte($pdo));
			} else {
			    echo json_encode(array("status" => "ERROR", "code" => ERROR_NOT_AUTHOTRIZED, "msg" => ERROR_NOT_AUTHOTRIZED_MSG));
			}
		} else if ($command == 'exportCsv') {
			if (($this->userrights->hasCurrentUserRight('is_admin')) 
					|| ($this->userrights->hasCurrentUserRight('right_manager'))) {
				$this->exportCsv();
			}
		} else if ($command == 'getAllTypesAndAvailProds') {
			$this->getAllTypesAndAvailProds();
		} else if ($command == 'getAllAvailProdsAlphaSorted') {
			$this->getAllAvailProdsAlphaSorted();
		} else if ($command == 'getAllExtrasAlphaSorted') {
			$this->getAllExtrasAlphaSorted();
		} else if ($command == 'getSingleProdData') {
			$pdo = DbUtils::openDbAndReturnPdoStatic();
			$this->getSingleProdData($pdo,$_GET['id']);
		} else if ($command == 'getSingleTypeData') {
			$this->getSingleTypeData($_GET['id']);
		} else if ($command == 'applySingleProdData') {
			$extras = null;
			if(isset($_POST['extras'])) {
				$extras = $_POST['extras'];
			}
			$this->applySingleProdData($_POST['id'],$_POST['longname'],$_POST['shortname'],$_POST['priceA'],$_POST['priceB'],$_POST['priceC'],$_POST['tax'],$_POST['available'],$_POST['audioFile'],$_POST['changeExtras'],$extras,$_POST['favorite'],$_POST['assignextrastotype']);
		} else if ($command == 'createExtra') {
			$this->createExtra($_POST['name'],$_POST['price']);
		} else if ($command == 'delExtra') {
			$this->delExtra($_POST['id']);
		} else if ($command == 'applyExtra') {
			$this->applyExtra($_POST['name'],$_POST['price'],$_POST['id']);
		} else if ($command == 'sortup') {
			$this->sortup($_POST['prodid']);
		} else if ($command == 'sortdown') {
			$this->sortdown($_POST['prodid']);
		} else if ($command == 'delproduct') {
			$this->delproduct($_POST['prodid']);
		} else if ($command == 'createProduct') {
			$this->createProduct($_POST['longname'],$_POST['shortname'],$_POST['priceA'],$_POST['priceB'],$_POST['priceC'],$_POST['tax'],$_POST['available'],$_POST['prodTypeId'],$_POST['audioFile'],$_POST['favorite']);
		} else if ($command == 'reassign') {
			$this->reassign($_POST['productid'],$_POST['typeid']);
		} else if ($command == 'createProdType') {
			$this->createProdType($_POST['refid'],$_POST['name']);
		} else if ($command == 'applyType') {
			$this->applyType($_POST['id'],$_POST['name'],$_POST['kind'],$_POST['usekitchen'],$_POST['usesupply'],$_POST['printer']);
		} else if ($command == 'delType') {
			$this->delType($_POST['id']);
		} else if ($command == 'getPriceLevelInfo') {
			$this->getPriceLevelInfo();
		} else if ($command == 'setPriceLevelInfo') {
			$this->setPriceLevelInfo($_POST['priceLevelId']);
		} else if ($command == 'getAudioFiles') {
			$this->getAudioFiles();
		} else if ($command == 'addGeneralComment') {
			$this->addGeneralComment($_POST['comment']);
		} else if ($command == 'getAllGeneralComments') {
			if ($this->userrights->hasCurrentUserRight('is_admin') || ($this->userrights->hasCurrentUserRight('right_waiter')) || ($this->userrights->hasCurrentUserRight('right_products'))) {
				$this->getAllGeneralComments();
			} else {
				echo "Fehlende Benutzerechte";
			}
		} else if ($command == 'changeGeneralComment') {
			$this->changeGeneralComment($_POST['id'],$_POST['comment']);
		} else if ($command == 'delGeneralComment') {
			$this->delGeneralComment($_POST['id']);
		} else if ($command == 'upGeneralComment') {
			$this->upGeneralComment($_POST['id']);
		} else if ($command == 'downGeneralComment') {
			$this->downGeneralComment($_POST['id']);
		} else if ($command == 'getAssignedExtrasOfProd') {
			if ($this->isCmdAllowed(R_WAI | R_PRO)) {
				$this->getAssignedExtrasOfProd($_GET['prodid']);
			}
		} else {
			echo "Command not supported.";
		}
	}
	
	function getDateValueAsBoolInterpretatedIcon($aValue) {
		if ($aValue != '0' ) {
			$imgFile = "ok.png";
		} else {
			$imgFile = "notavailable.png";
		}
		return $imgFile;
	}
	
	private function getAllTypesAndAvailProds() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$pdo->beginTransaction();
		
		$sql = "select setting FROM %config% WHERE name=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array("pricelevel"));
		$row = $stmt->fetchObject();
		$pricelevel = $row->setting;
		$priceTxt = "priceA";
		if ($pricelevel == 2) {
			$priceTxt = "priceB";
		} else if ($pricelevel == 3) {
			$priceTxt = "priceC";
		}
		
		$sql = "select id,name,reference from %prodtype% where removed is null";
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute();
		$result = $stmt->fetchAll();
		$typeArray = array();
		
		foreach($result as $row) {
			$ref = $row['reference'];
			if ($ref == null) {
				$ref = 0;
			}
			$typeArray[] = array("id" => $row['id'], "name" => $row['name'], "ref" => $ref);
		}
		
		$sql = "select id,shortname,longname,audio,category as ref,favorite,$priceTxt as price,IF(tax is not null, tax, 'null') as tax from %products% where available='1' AND removed is null ORDER BY sorting";
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute();
		$result = $stmt->fetchAll();
		$prodArray = array();
		foreach($result as $row) {
			$ref = $row['ref'];
			if ($ref == null) {
				$ref = 0;
			}
			$audio = $row['audio'];
			if ($audio == null) {
				$audio = "";
			}
			$fav = $row['favorite'];
			if ($fav == null) {
				$fav = 0;
			}
			
			$sql = "SELECT DISTINCT %extras%.id AS extraid,%extras%.name AS name FROM %extras%,%extrasprods%
				WHERE %extrasprods%.prodid=? AND %extras%.id=%extrasprods%.extraid AND %extras%.removed is null";
			
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute(array($row['id']));
			$extras = $stmt->fetchAll(PDO::FETCH_OBJ);			
			
			$prodArray[] = array("id" => $row['id'], "name" => $row['shortname'], "longname" => $row['longname'], "audio" => $audio, "ref" => $ref, "favorite" => $fav, "price" => $row['price'], "tax" => $row['tax'], "extras" => $extras);
		}
		$pdo->commit();
		
		$retArray = array("types" => $typeArray, "prods" => $prodArray);
		echo json_encode($retArray);
	}
	
	/*
	 * Return all available product with id and name, category
	 * (used for re-assignment to type)
	 */
	function getAllAvailProdsAlphaSorted() {
		$pdo = $this->dbutils->openDbAndReturnPdo();
		$sql = "select id,longname,category from %products% WHERE available='1' AND removed is null ORDER BY longname";
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute();
		$result = $stmt->fetchAll(PDO::FETCH_OBJ);
		echo json_encode($result);
	}

	function getAllExtrasAlphaSorted() {
		$pdo = $this->dbutils->openDbAndReturnPdo();
		$ret = $this->getAllExtrasAlphaSortedCore($pdo);
		echo json_encode(array("status" => "OK", "msg" => $ret));
	}
	
	function getAllExtrasAlphaSortedCore($pdo) {
		$pdo = $this->dbutils->openDbAndReturnPdo();
		$sql = "select id,name,price from %extras% WHERE removed is null ORDER BY name";
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute();
		$result = $stmt->fetchAll(PDO::FETCH_OBJ);
		return $result;
	}

	
	/*
	 * Return in array all products with their id and longname that have a reference to
	 * the given category.
	 * 
	 * The output is this:
	 * 		["id" => 1, "longname" => "Whatever Product"],
	 * 		["id" => 2, "longname" => "Whatever Other Product"], ...
	 */
	private function getProductsWithReferenz($pdo,$ref) {
		$prods = array();
		$sql = "SELECT id,shortname,longname,priceA,priceB,priceC,IF(tax is not null, tax, 'null') as tax,available,audio from %products% where removed is null AND category is null ORDER BY sorting";
		if ($ref > 0) {
			$sql = "SELECT id,shortname,longname,priceA,priceB,priceC,IF(tax is not null, tax, 'null') as tax,available,audio from %products% where removed is null AND category=$ref ORDER BY sorting";
		}
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute();
		$result = $stmt->fetchAll();
		
		foreach($result as $zeile) {
			$prod_entry = array(
					"id" => $zeile['id'],
					"shortname" => $zeile['shortname'],
					"longname" => $zeile['longname'],
					"available" => $zeile['available'],
					"priceA" => $zeile['priceA'],
					"priceB" => $zeile['priceB'],
					"priceC" => $zeile['priceC'],
					"tax" => $zeile['tax'],
					"audio" => ($zeile['audio'] == null ? '' : $zeile['audio']),
					"type" => "p");
			$prods[] = $prod_entry;
		}

		return $prods;
	}
	
	private static function getAllSubTypes($pdo,$prodtypeid) {
		$sql = "SELECT id,reference FROM %prodtype% WHERE reference=? AND removed is null";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($prodtypeid));
		$allSubTypes = $stmt->fetchAll(PDO::FETCH_OBJ);
		$subtypeids = array();
		foreach ($allSubTypes as $aType) {
			$typeids = self::getAllSubTypes($pdo,$aType->id);
			$subtypeids = array_merge($subtypeids,$typeids);
		}
		return array_merge(array($prodtypeid),$subtypeids);
	}
	
	private static function getAllProdIdOfSameTypeAndBelow($pdo,$prodid) {
		$sql = "SELECT category FROM %products% WHERE id=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($prodid));
		$row =$stmt->fetchObject();
		$theType = $row->category;
		$allTypes = self::getAllSubTypes($pdo,$theType);
		
		$prodIds = array();
		foreach ($allTypes as $aTypeId) {
			$sql = "SELECT id FROM %products% WHERE category=? AND removed is null";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
			$stmt->execute(array($aTypeId));
			$allProdIdsOfThisType = $stmt->fetchAll(PDO::FETCH_OBJ);
			foreach($allProdIdsOfThisType as $aProd) {
				$prodIds[] = $aProd->id;
			}
		}
		return $prodIds;
	}
	
	
	/*
	 * Return in array all types with their id and name that have a reference to
	* the given category.
	*
	* The output is this:
	* 		["id" => 1, "name" => "Meal"],
	* 		["id" => 2, "name" => "Drinks"], ...
	*/
	private function getProdTypesWithReferenz($pdo,$ref) {

		$sql = "SELECT id,name,kind,usekitchen,usesupplydesk,printer,'t' as type from %prodtype% where removed is null AND reference is null";
		if ($ref > 0) {
			$sql = "SELECT id,name,kind,usekitchen,usesupplydesk,printer,'t' as type from %prodtype% where removed is null AND reference=$ref";
		}

		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute();
		$types = $stmt->fetchAll();

		return $types;
	}
	
	function showDbProducts() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		$productArray = $this->getDbProductsWithRef_json_version($pdo,0,0);
		echo json_encode($productArray);
	}

	private function getMenuLevelUp($ref) {
		// from which type does the current type reference to?
		$pdo = $this->dbutils->openDbAndReturnPdo();
		$sql = "SELECT reference from %prodtype% where removed is null AND id=?";
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute(array($ref));
		$currentRef =$stmt->fetchObject();
		$this->getMenu($currentRef->reference,$pdo);
	}
	private function getMenu($ref,$pdo) {
		if (is_null($pdo)) {
			$pdo = $this->dbutils->openDbAndReturnPdo();
		}
		if (!is_null($ref) && ($ref>0)) {
			$sql = "SELECT id,name,kind,usekitchen,usesupplydesk,printer,'t' as type from %prodtype% where removed is null AND id=?";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute(array($ref));
			$currentProdType =$stmt->fetchObject();
		} else {
			$currentProdType = null;
		}
	
		if (!is_null($ref) && ($ref>0)) {
			$sql = "SELECT id,name,kind,usekitchen,usesupplydesk,printer,'t' as type from %prodtype% where removed is null AND reference=?";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute(array($ref));
		} else {
			$sql = "SELECT id,name,kind,usekitchen,usesupplydesk,printer,'t' as type from %prodtype% where removed is null AND reference is null";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute();
		}
		$containedTypes = $stmt->fetchAll(PDO::FETCH_OBJ);
	
		if (!is_null($ref) && ($ref>0)) {
			$sql = "SELECT id,shortname,longname,priceA,priceB,priceC,IF(tax is not null, tax, 'null') as tax,available,favorite,audio,'p' as type from %products% where removed is null AND category=? ORDER BY sorting";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute(array($ref));
		} else {
			$sql = "SELECT id,shortname,longname,priceA,priceB,priceC,IF(tax is not null, tax, 'null') as tax,available,favorite,audio,'p' as type from %products% where removed is null AND category is null ORDER BY sorting";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute();
		}
		$containedProds = $stmt->fetchAll(PDO::FETCH_OBJ);
		
		$msg = array("currentType" => $currentProdType,"containedTypes" => $containedTypes,"containedProds" => $containedProds);
		echo json_encode(array("status" => "OK", "msg" => $msg));
	}
	
	function readDbProducts($pdo) {
		$speisekarte = $this->readDbProductsWithRef_json_version($pdo,0,0);
		$speisekarte .= $this->readExtrasFromDb($pdo);
		return $speisekarte;
	}
	
	function readExtrasFromDb($pdo) {
		if (is_null($pdo)) {
			$pdo = $this->dbutils->openDbAndReturnPdo();
		}
		$sql = "SELECT id,name,price FROM %extras% WHERE removed is null";
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute();
		$result = $stmt->fetchAll(PDO::FETCH_OBJ);
		$extrasTxt = "";
		$decpoint = $this->getDecPoint($pdo);
		foreach ($result as $aRes) {
			$extrasTxt .= "!" . $aRes->name . " (ID:" . $aRes->id . ") #" ;
			$priceTxt = number_format($aRes->price, 2, $decpoint, '');
			$extrasTxt .= $priceTxt;
			
			$sql = "SELECT prodid FROM %extrasprods% WHERE extraid=?";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute(array($aRes->id));
			$assignedProds = $stmt->fetchAll(PDO::FETCH_OBJ);
			$assProdArr = array();
			foreach ($assignedProds as $anAssProd) {
				$assProdArr[] = "(" . $anAssProd->prodid . ")";
			}
			$extrasTxt .= " ; " . join(",",$assProdArr) . "\n";
		}
		
		
		return $extrasTxt;
	}
	
	private function getDecPoint($pdo) {
		$sql = "SELECT name,setting FROM %config% WHERE name=?";
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute(array("decpoint"));
		$row = $stmt->fetchObject();
		return($row->setting);
	}
	
	private function exportCsv() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		
		$decpoint = $this->getDecPoint($pdo);
		$file_name = "datenexport-produkte.csv";
		header("Content-type: text/x-csv");
		header("Content-Disposition: attachment; filename=$file_name");
		header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
		header("Pragma: no-cache");
		header("Expires: 0");
		echo("Eintragsid; Datum ; Produktid; Kurzname; Langname; Preis (Stufe A); Preis (Stufe B);");
		echo("Preis (Stufe C); Steuer; Verfügbarkeit; Favorit; Extras/Optionen; Beschreibung");
		echo("\n");
		
		$sql = "SELECT DISTINCT %hist%.id as id,date,";
		$sql .= "prodid,shortname,longname,priceA,priceB,priceC,IF(tax is not null, tax, '-') as tax,available,favorite,extras,description ";
		$sql .= " FROM %hist%, %histprod%, %histactions% ";
		$sql .= " WHERE (refid=%histprod%.id) ";
		$sql .= " AND (action='1' OR action='4' OR action='5') ";
		$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['prodid'];
			$val4 = str_replace('"','""',$zeile['shortname']);
			$val5 = str_replace('"','""',$zeile['longname']);
			$val6 = str_replace(".",$decpoint,$zeile['priceA']);
			$val7 = str_replace(".",$decpoint,$zeile['priceB']);
			$val8 = str_replace(".",$decpoint,$zeile['priceC']);
			$val9 = str_replace(".",$decpoint,$zeile['tax']);
			$val10 = ($zeile['available'] == '1' ? "Ja" : "Nein");
			$val11 = ($zeile['favorite'] == '1' ? "Ja" : "Nein");
			$val12 = $zeile['extras'];
			$val13 = $zeile['description'];

			echo "$val1; $val2; $val3; \"$val4\"; \"$val5\"; $val6; $val7; $val8; $val9; $val10; $val11; $val12; $val13\n";
		}
	}
	
	function getSingleProdData($pdo,$id) {
		if (is_numeric($id)) {
			$sql = "SELECT id,shortname,longname,priceA,priceB,priceC,IF(tax is not null, tax, 'null') as tax,available,audio,favorite from %products% where id=?";
			
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
			$stmt->execute(array($id));
			$row = $stmt->fetchObject();

			echo json_encode($row);
		}
	}
	
	function getSingleTypeData($id) {
		if (is_numeric($id)) {
			$pdo = $this->dbutils->openDbAndReturnPdo();
			$sql = "SELECT id,name,usekitchen,usesupplydesk,kind,reference FROM %prodtype% WHERE removed is NULL AND id=?";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute(array($id));
			$affectedRows = $stmt->rowCount();
			if ($affectedRows == 1) {
				$row = $stmt->fetchObject();
				echo json_encode(array("status" => "OK", "msg" => $row));
			}
		} else {
			echo json_encode(array("status" => "ERROR", "code" => ERROR_GENERAL_DB_NOT_READABLE, "msg" => ERROR_GENERAL_DB_NOT_READABLE_MSG));
		}
	}
	
	function reassign($prodid,$typeid) {
		$pdo = $this->dbutils->openDbAndReturnPdo();
		$pdo->beginTransaction();
		
		// getSortingOfProduct
		$this->sorter->resortAfterProduct($pdo, $prodid);
		
		$sql = "UPDATE %products% SET category=? WHERE id=?";
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute(array($typeid,$prodid));
		$affectedRows = $stmt->rowCount();
		$pdo->commit();
		if ($affectedRows == 1) {
			// now declare as set to end to list
			$this->sorter->setMaxSortingForProdId($pdo, $prodid);
			echo json_encode(array("status" => "OK"));
		} else {
			echo json_encode(array("status" => "ERROR"));
		}
	}
	
	private function getMaxSortOfGenComment($pdo) {
		$sql = "SELECT MAX(sorting) as maxsort from %comments% WHERE prodid is null";
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute();
			
		$row = $stmt->fetchObject();
		$maxSorting = 0;
		if ($row != null) {
			$maxSorting = intval($row->maxsort);
		}
		return $maxSorting;
	}
	
	private function getAssignedExtrasOfProd($prodid) {
		$ret = $this->getAssignedExtrasOfProdCore($prodid,null);
		echo json_encode(array("status" => "OK", "msg" => $ret, "prodid" => $prodid));
	}
	
	private function getAssignedExtrasOfProdCore($prodid,$pdo) {
		if (is_null($pdo)) {
			$pdo = $this->dbutils->openDbAndReturnPdo();
		}
		$sql = "SELECT DISTINCT %extras%.id AS extraid FROM %extras%,%extrasprods% 
				WHERE %extrasprods%.prodid=? AND %extras%.id=%extrasprods%.extraid AND %extras%.removed is null";
		
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute(array($prodid));
		$result = $stmt->fetchAll(PDO::FETCH_OBJ);
		$ids = array();
		foreach ($result as $aRes) {
			$ids[] = $aRes->extraid;
		}
		return $ids;
	}
	
	// to be called by manager-readSpeisekarte
	public static function createExtraCore($pdo,$name,$price,$assignedProdIds) {
		if (is_null($pdo)) {
			$pdo = DbUtils::openDbAndReturnPdoStatic();
		}

		$sql = "SELECT id FROM %extras% WHERE name=? AND removed is null";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($name));
		$numberOfExtras = $stmt->rowCount();

		if ($numberOfExtras > 0) {
			return ERROR_NAME_EXISTS_ALREADY;
		}

		$sql = "INSERT INTO `%extras%` (`id`,`name`,`price`) VALUES(NULL,?,?)";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($name,$price));
		$lastExtraId = $pdo->lastInsertId();
		
		$sql = "DELETE FROM %extrasprods% WHERE id=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($lastExtraId));
		
		foreach ($assignedProdIds as $assProdId) {
			$sql = "INSERT INTO %extrasprods% (`id` , `extraid` , `prodid`) VALUES (NULL,?,?)";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
			$stmt->execute(array($lastExtraId,$assProdId));

			$histextra = self::getExtrasForProd($pdo,$assProdId);
			self::updateHistOnlyForExtrasOfProd($pdo, $assProdId,$histextra);
		}
		return OK;
	}
	
	private function createExtra($name,$price) {
		try {
			$pdo = $this->dbutils->openDbAndReturnPdo();
			$pdo->beginTransaction();
			
			$ret = self::createExtraCore($pdo,$name,$price,array());
			if ($ret == ERROR_NAME_EXISTS_ALREADY) {
				echo json_encode(array("status" => "ERROR", "code" => ERROR_NAME_EXISTS_ALREADY, "msg" => ERROR_NAME_EXISTS_ALREADY_MSG));
				$pdo->rollBack();
				return;
			}
			
			$pdo->commit();
			$this->getAllExtrasAlphaSorted();
		}
		catch (PDOException $e) {
			echo json_encode(array("status" => "ERROR", "code" => ERROR_GENERAL_DB_NOT_READABLE, "msg" => ERROR_GENERAL_DB_NOT_READABLE_MSG));
		}
	}
	
	private function applyExtra($name,$price,$id) {
		try {
			$pdo = $this->dbutils->openDbAndReturnPdo();
			$pdo->beginTransaction();
			
			$sql = "SELECT id FROM %extras% WHERE name=? AND id <> ? AND removed is null";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute(array($name,$id));
			$numberOfExtras = $stmt->rowCount();
			if ($numberOfExtras > 0) {
				echo json_encode(array("status" => "ERROR", "code" => ERROR_NAME_EXISTS_ALREADY, "msg" => ERROR_NAME_EXISTS_ALREADY_MSG, "id" => $id));
				$pdo->rollBack();
				return;
			}
			
			$sql = "UPDATE %extras% SET name=?, price=? WHERE id=? AND removed is null";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute(array($name,$price,$id));
			$numberOfExtras = $stmt->rowCount();
			if ($numberOfExtras != 1) {
				echo json_encode(array("status" => "ERROR", "code" => DB_NOT_CHANGED, "msg" => DB_NOT_CHANGED_MSG, "id" => $id));
				$pdo->rollBack();
				return;
			}
			
			$pdo->commit();
			$this->getAllExtrasAlphaSorted();
		}
		catch (PDOException $e) {
			echo json_encode(array("status" => "ERROR", "code" => ERROR_GENERAL_DB_NOT_READABLE, "msg" => ERROR_GENERAL_DB_NOT_READABLE_MSG, "id" => $id));
		}
	}
	
	private function delExtra($id) {
		// TODO: hist!
		// TODO: extrasprods cleanen
		try {
			$pdo = $this->dbutils->openDbAndReturnPdo();
			$sql = "UPDATE %extras% SET removed='1' WHERE id=?";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute(array($id));
			$this->getAllExtrasAlphaSorted();
		}
		catch (PDOException $e) {
			echo json_encode(array("status" => "ERROR", "code" => ERROR_GENERAL_DB_NOT_READABLE, "msg" => ERROR_GENERAL_DB_NOT_READABLE_MSG));
		}
	}
	
	/**
	 * Add a new comment to the list of general comments that are not bound to a product
	 * @param string $comment
	 */
	private function addGeneralComment($comment) {
		try {
			$pdo = $this->dbutils->openDbAndReturnPdo();
			$pdo->beginTransaction();
			
			// what is the max sort number because it shall be added afterwards
			$maxSorting = $this->getMaxSortOfGenComment($pdo);
			
			// insert the comment
			$sql = "INSERT INTO `%comments%` (`id`,`comment`,`prodid`,`active`,`sorting`) VALUES(NULL,?,NULL,1,?)";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute(array($comment,$maxSorting+1));
			
			$pdo->commit();
			echo json_encode(array("status" => "OK"));
		}
		catch (PDOException $e) {
			echo json_encode(array("status" => "ERROR", "code" => ERROR_GENERAL_DB_NOT_READABLE, "msg" => ERROR_GENERAL_DB_NOT_READABLE_MSG));
		}
	}
	
	private function getAllGeneralComments() {
		try {
			$pdo = $this->dbutils->openDbAndReturnPdo();
			$sql = "SELECT id,comment,sorting FROM %comments% WHERE prodid is null ORDER BY sorting ASC";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute();
			
			$result = $stmt->fetchAll();
			$commentArray = array();
			
			foreach($result as $row) {
				$commentArray[] = array("id" => $row['id'], "comment" => $row['comment'], "sorting" => $row['sorting']);
			}
			
			echo json_encode(array("status" => "OK", "msg" => $commentArray));
		}
		catch (PDOException $e) {
			echo json_encode(array("status" => "ERROR", "code" => ERROR_GENERAL_DB_NOT_READABLE, "msg" => ERROR_GENERAL_DB_NOT_READABLE_MSG));
		}
	}
	
	private function changeGeneralComment($id,$comment) {
		try {
			$pdo = $this->dbutils->openDbAndReturnPdo();
			$sql = "UPDATE %comments% SET comment=? WHERE id=?";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute(array($comment,$id));

			echo json_encode(array("status" => "OK"));
		}
		catch (PDOException $e) {
			echo json_encode(array("status" => "ERROR", "code" => ERROR_GENERAL_DB_NOT_READABLE, "msg" => ERROR_GENERAL_DB_NOT_READABLE_MSG));
		}
	}
	
	private function getSortingOfComment($pdo,$id) {
		$sql = "SELECT sorting FROM %comments% WHERE id=?";
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute(array($id));
		$row = $stmt->fetchObject();
			
		if ($row == null) {
			return (-1);
		} else {
			return intval($row->sorting);
		}
	}
	
	private function delGeneralComment($id) {
		try {
			$pdo = $this->dbutils->openDbAndReturnPdo();
			$pdo->beginTransaction();
			// which sorting has the comment to delete?
			$sorting = $this->getSortingOfComment($pdo, $id);
			
			if ($sorting < 0) {
				echo json_encode(array("status" => "ERROR", "code" => ERROR_GENERAL_DB_NOT_READABLE, "msg" => ERROR_GENERAL_DB_NOT_READABLE_MSG));
				return;
			}
			
			// delete the comment
			$sql = "DELETE FROM %comments% WHERE id=? AND prodid is null";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute(array($id));
		
			// subtract all sortings by one higher then the deleted sorting index
			$sql = "SELECT id,sorting FROM %comments% WHERE sorting>? AND prodid is null";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute(array($sorting));
			
			$result = $stmt->fetchAll();
			$commentsToUpdate = array();

			foreach($result as $row) {
				$theId = $row['id'];
				$theSort = intval($row['sorting'])-1;
				$sql = "UPDATE %comments% SET sorting=? WHERE id=?";
				$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
				$stmt->execute(array($theSort,$theId));
			}
			$pdo->commit();
			echo json_encode(array("status" => "OK"));
		}
		catch (PDOException $e) {
			echo json_encode(array("status" => "ERROR", "code" => ERROR_GENERAL_DB_NOT_READABLE, "msg" => ERROR_GENERAL_DB_NOT_READABLE_MSG));
		}
	}
	
	private function upGeneralComment($id) {
		try {
			$pdo = $this->dbutils->openDbAndReturnPdo();
			$pdo->beginTransaction();

			// which sorting has the comment to delete?
			$sorting = $this->getSortingOfComment($pdo, $id);
			
			if ($sorting < 0) {
				echo json_encode(array("status" => "ERROR", "code" => ERROR_GENERAL_DB_NOT_READABLE, "msg" => ERROR_GENERAL_DB_NOT_READABLE_MSG));
				return;
			}
			if ($sorting == 1) {
				// finished
				$pdo->commit();
				echo json_encode(array("status" => "OK"));
				return;
			}
				
			// get comment before
			$sql = "SELECT id FROM %comments% WHERE sorting=? AND prodid is null";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute(array($sorting - 1));
			$row = $stmt->fetchObject();
			$previousId = $row->id;
		
			// change these two comments in its ordering
			$sql = "UPDATE %comments% SET sorting=? WHERE id=?";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute(array($sorting,$previousId));
			
			$sql = "UPDATE %comments% SET sorting=? WHERE id=?";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute(array($sorting-1,$id));
			
			$pdo->commit();
			echo json_encode(array("status" => "OK"));
		}
		catch (PDOException $e) {
			echo json_encode(array("status" => "ERROR", "code" => ERROR_GENERAL_DB_NOT_READABLE, "msg" => ERROR_GENERAL_DB_NOT_READABLE_MSG));
		}
	}
	
	private function downGeneralComment($id) {
		try {
			$pdo = $this->dbutils->openDbAndReturnPdo();
			$pdo->beginTransaction();
		
			// which sorting has the comment to delete?
			$sorting = $this->getSortingOfComment($pdo, $id);
				
			if ($sorting < 0) {
				echo json_encode(array("status" => "ERROR", "code" => ERROR_GENERAL_DB_NOT_READABLE, "msg" => ERROR_GENERAL_DB_NOT_READABLE_MSG));
				return;
			}
			
			// is it at end of list?
			$maxSorting = $this->getMaxSortOfGenComment($pdo);
			if (($maxSorting == 0) || ($maxSorting == $sorting)) {
				// finished
				$pdo->commit();
				echo json_encode(array("status" => "OK"));
				return;
			}
		
			// get comment afterwards
			$sql = "SELECT id FROM %comments% WHERE sorting=? AND prodid is null";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute(array($sorting + 1));
			$row = $stmt->fetchObject();
			$nextId = $row->id;
		
			// change these two comments in its ordering
			$sql = "UPDATE %comments% SET sorting=? WHERE id=?";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute(array($sorting,$nextId));
				
			$sql = "UPDATE %comments% SET sorting=? WHERE id=?";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			$stmt->execute(array($sorting+1,$id));
				
			$pdo->commit();
			echo json_encode(array("status" => "OK"));
		}
		catch (PDOException $e) {
			echo json_encode(array("status" => "ERROR", "code" => ERROR_GENERAL_DB_NOT_READABLE, "msg" => ERROR_GENERAL_DB_NOT_READABLE_MSG));
		}
	}
	
	function sortup($prodid) {
		$pdo = $this->dbutils->openDbAndReturnPdo();
		$pdo->beginTransaction();
		$this->sorter->sortup($pdo, $prodid);
		$pdo->commit();
		echo json_encode("OK");
	}
	
	function sortdown($prodid) {
		$pdo = $this->dbutils->openDbAndReturnPdo();
		$pdo->beginTransaction();
		$this->sorter->sortdown($pdo, $prodid);
		$pdo->commit();
		echo json_encode("OK");
	}
	
	function delproduct($prodid) {
		$pdo = $this->dbutils->openDbAndReturnPdo();
		$pdo->beginTransaction();
		$this->sorter->delproduct($pdo, $prodid);
		$pdo->commit();
		
		echo json_encode("OK");
	}
	
	
	function applySingleProdData($id,$longname,$shortname,$priceA,$priceB,$priceC,$tax,$available,$audioFile,$changeExtras,$extras,$favorite,$assignextrastotype) {
		if (!is_numeric($id) || !is_numeric($available) || !is_numeric($favorite) ||!is_numeric($priceA) || !is_numeric($priceB) || !is_numeric($priceC) || (!is_numeric($tax) && ($tax != "null")) ) {
			return;
		}
		
		if ($tax == "null") {
			$tax = null;
		}
		if ($audioFile == '') {
			$audioFile = null;
		}
		$updateSql = "UPDATE %products% SET shortname=?, longname=?, priceA=?, priceB=?, priceC=?, tax=?, available=?, audio=?, favorite=? WHERE id=?";
		$pdo = $this->dbutils->openDbAndReturnPdo();
		$pdo->beginTransaction();
		
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($updateSql));
		$stmt->execute(array($shortname,$longname,$priceA,$priceB,$priceC,$tax,$available,$audioFile,$favorite,$id));

		if ($assignextrastotype == 0) {
			if ($changeExtras == 1) {
				$this->changeExtraAssignment($pdo, $id, $extras);
			}
			// now this has to be logged in the history tables...
			HistFiller::updateProdInHist($pdo,$id);
		} else {
			
			$prodids = self::getAllProdIdOfSameTypeAndBelow($pdo,$id);
			
			foreach ($prodids as $aProdId) {
				$this->changeExtraAssignment($pdo, $aProdId, $extras);
				$histextra = self::getExtrasForProd($pdo,$aProdId);
				self::updateHistOnlyForExtrasOfProd($pdo, $aProdId,$histextra);
			}
		}
		
		$pdo->commit();	
		$this->getSingleProdData($pdo,$id);
	}
	
	private static function updateHistOnlyForExtrasOfProd($pdo,$aProdId,$histextra) {
            HistFiller::updateProdInHist($pdo, $aProdId);
	}
	
	function changeExtraAssignment($pdo,$prodid,$extras) {
		$sql = "DELETE FROM %extrasprods% WHERE prodid=?";
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute(array($prodid));
		
		$histextra = "";
		if (!is_null($extras) && ($extras != "")) {
			$sql = "INSERT INTO %extrasprods% (`id` , `extraid` , `prodid`) VALUES (NULL,?,?)";
			$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
			foreach($extras as $anExtra) {
				$stmt->execute(array($anExtra,$prodid));
			}
		}
	}

	private static function getExtrasForProd($pdo,$prodid) {
		$sql = "SELECT DISTINCT %extras%.name as extraname from %extras%,%extrasprods% where %extras%.removed is null AND %extrasprods%.extraid=%extras%.id AND %extrasprods%.prodid=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array($prodid));
		
		$result = $stmt->fetchAll();
		$extraArr = array();
		if (count($result) == 0) {
			return "";
		} else {
			foreach($result as $row) {
				$extraArr[] = $row['extraname'];
			}
			return(implode(", ", $extraArr));
		}
	}
	
	function createProdType($id,$prodTypeName) {
		if (!is_numeric($id)) {
			echo json_encode(array("status" => "ERROR", "code" => ERROR_GENERAL_ID_TYPE, "msg" => ERROR_GENERAL_ID_TYPE_MSG));
			return;
		}

		$pdo = $this->dbutils->openDbAndReturnPdo();
		$pdo->beginTransaction();
		
		// which kind is the referenced type?
		$sql = "SELECT kind FROM %prodtype% WHERE id=?";
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute(array($id));
		$row =$stmt->fetchObject();
		
		if ($row == null) {
			echo json_encode(array("status" => "ERROR", "code" => ERROR_GENERAL_DB_NOT_READABLE, "msg" => ERROR_GENERAL_DB_NOT_READABLE_MSG));
			return;
		}
		$kind = $row->kind;
		
		$sql = "INSERT INTO `%prodtype%` (`id`,`name`,`usekitchen`,`usesupplydesk`,`kind`,`printer`,`sorting`,`reference`) ";
		$sql .= " VALUES(NULL,?,1,1,?,1,NULL,?)";
		
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute(array($prodTypeName,$kind,$id));
		
		$pdo->commit();
		echo json_encode(array("status" => "OK"));
	}
	
	function createProduct($longname,$shortname,$priceA,$priceB,$priceC,$tax,$available,$typeId,$audioFile,$favorite) {
		if (!is_numeric($typeId) || !is_numeric($available) || !is_numeric($favorite)|| !is_numeric($priceA) || !is_numeric($priceB) || !is_numeric($priceC)) {
			return;
		}

		if ($tax == "null") {
			$tax = null;
		}
		
		if ($audioFile == '') {
			$audioFile = null;
		}
		
		if (trim($shortname) == "") {
			$shortname = $longname;
		}
		
		$sql = "INSERT INTO `%products%` (`id`, `shortname`, `longname`,  `priceA`,  `priceB`,  `priceC`, `tax`, `category`,`favorite`,`available`,`audio`) VALUES (NULL,?,?,?,?,?,?,?,?,?,?)";
		$pdo = $this->dbutils->openDbAndReturnPdo();
		$pdo->beginTransaction();

		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute(array($shortname,$longname,$priceA,$priceB,$priceC,$tax,$typeId,$favorite,$available,$audioFile));
		
		$newProdId = $pdo->lastInsertId();
		$this->sorter->setMaxSortingForProdId($pdo, $newProdId);
		
		$pdo->commit();
		
		// now this has to be logged in the history tables...
		HistFiller::createProdInHist($pdo, $newProdId);

		echo json_encode("OK: sql");
	}
	
	/*
	 * Change the properties of a type of products
	 */
	function applyType($id,$name,$kind,$usekitchen,$usesupply,$printer) {
		if (!is_numeric($id) || !is_numeric($kind) || !is_numeric($usekitchen) || !is_numeric($usesupply) || !is_numeric($printer)) {
			return;
		}
		$pdo = $this->dbutils->openDbAndReturnPdo();
		$updateSql = "UPDATE %prodtype% SET kind=?, name=?, usekitchen=?, usesupplydesk=?, printer=? WHERE id=?";
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($updateSql));
		$stmt->execute(array($kind,$name,$usekitchen,$usesupply,$printer,$id));
		echo json_encode("OK: $updateSql");
	}
	
	function delType($id) {
		if (!is_numeric($id)) {
			echo json_encode(array("status" => "FAILED"));
		}
		$pdo = $this->dbutils->openDbAndReturnPdo();
		$pdo->beginTransaction();
		$this->delTypeCore($pdo, $id);
		$pdo->commit();
		echo json_encode(array("status" => "OK"));
	}
	
	function delTypeCore($pdo,$id) {		
		
		$allTypesInThisLevel = $this->getProdTypesWithReferenz($pdo,$id);
		foreach ($allTypesInThisLevel as $aType) {
			$this->delTypeCore($pdo, $aType["id"]);
		}
		
		$allProdsInThisLevel = $this->getProductsWithReferenz($pdo,$id);
		foreach ($allProdsInThisLevel as $aProd) {
			self::declareProductAsDeletedWithoutResort($pdo, $aProd["id"]);
		}
		
		self::declareTypeAsDeleted($pdo, $id);
	}
	
	static private function declareTypeAsDeleted($pdo,$id) {
		$sql = "UPDATE %prodtype% SET removed=? WHERE id=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array(1,$id));
	}
	
	static private function declareProductAsDeletedWithoutResort($pdo,$id) {
		$sql = "UPDATE %products% SET removed=? WHERE id=?";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute(array(1,$id));
	}
	
	/* 
	 * Return a html table with all products in a structured way
	 */
	private function getDbProductsWithRef_json_version($pdo,$ref,$depth) {
		$allProdsAndTypesInThisLevel = array();
	
		$allProdsInThisLevel = $this->getProductsWithReferenz($pdo,$ref);
		$allTypesInThisLevel = $this->getProdTypesWithReferenz($pdo,$ref);
		
 		for ($index_prod=0;$index_prod<count($allProdsInThisLevel);$index_prod++) {
 			$aProd = $allProdsInThisLevel[$index_prod];
 			$allProdsAndTypesInThisLevel[] = array("entry" => $aProd, "content" => '');
 		}
		for ($index_type=0;$index_type < count($allTypesInThisLevel);$index_type++) {
			$aProdType = $allTypesInThisLevel[$index_type];
			$typeRef = $aProdType['id'];
			$allProdsAndTypesInThisLevel[] = array("entry" => $aProdType,"content" => $this->getDbProductsWithRef_json_version($pdo,$typeRef,$depth+1));
		}
		return $allProdsAndTypesInThisLevel;
	}
	
	// return in text format
	private function readDbProductsWithRef_json_version($pdo,$ref,$depth) {
		$decpoint = $this->getDecPoint($pdo);
		$text = "";
	
		$allProdsInThisLevel = $this->getProductsWithReferenz($pdo,$ref);
		$allTypesInThisLevel = $this->getProdTypesWithReferenz($pdo,$ref);
	
		for ($index_prod=0;$index_prod<count($allProdsInThisLevel);$index_prod++) {
			$aProd = $allProdsInThisLevel[$index_prod];
			
			// Kurzname ; NormalPreis (Stufe A); Langname # Preis (Stufe B); Preis (Stufe C)
			$prodText = ProductEntry::createProductStr($aProd,$decpoint);
			$text .= substr("                               ", 0, $depth) . $prodText . "\n";
		}
		
		for ($index_type=0;$index_type < count($allTypesInThisLevel);$index_type++) {
			$aProdType = $allTypesInThisLevel[$index_type];
			$typeRef = $aProdType['id'];
			
			$indent = substr ( "                                " , 0 ,$depth);

			$prodTypeName = $aProdType['name'];
			$kind = ($aProdType['kind'] == 0 ? "F" : "D");
			$usekitchen = ($aProdType['usekitchen'] == 1 ? "K" : "");
			$usesupplydesk = ($aProdType['usesupplydesk'] == 1 ? "B" : "");
			$printer = ($aProdType['printer']);
			
			$text .= $indent . $prodTypeName . " = $usekitchen$usesupplydesk$kind = $printer\n";
			
			$text .= $this->readDbProductsWithRef_json_version($pdo,$typeRef,$depth+1);
		}
		return $text;
	}
	
	private function getPriceLevelInfo() {
		$pdo = DbUtils::openDbAndReturnPdoStatic();
		if(session_id() == '') {
			session_start();
		}
		$lang = $_SESSION['language'];
		
		$currentPriceLevel = $this->commonUtils->getCurrentPriceLevel($pdo);
		$currentPriceLevelId = $currentPriceLevel["id"];
		$currentPriceLevelName = $currentPriceLevel["name"];
		
		$pricelevels = array();
		$sql = "SELECT id,name,info FROM %pricelevel%";
		if ($lang == 1) {
			$sql = "SELECT id,name,info_en as info FROM %pricelevel%";
		} else if ($lang == 2) {
			$sql = "SELECT id,name,info_esp as info FROM %pricelevel%";
		}
		
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));		
		$stmt->execute();
		$result = $stmt->fetchAll();
		foreach($result as $zeile) {
			$theId = $zeile['id'];
			$selected = "0";
			if ($theId == $currentPriceLevelId) {
				$selected = "1";
			}
			
			$levels_entry = array(
					"id" => $theId,
					"name" => $zeile['name'],
					"info" => $zeile['info'],
					"selected" => $selected);
			$pricelevels[] = $levels_entry;
		}
		
		$retArray = array("currentId" => $currentPriceLevelId, "currentName" => $currentPriceLevelName, "levels" => $pricelevels);
		echo json_encode($retArray);
	}
	
	private function setPriceLevelInfo($levelId) {
		if (is_numeric($levelId)) {
			$pdo = DbUtils::openDbAndReturnPdoStatic();
			$updateSql = "UPDATE %config% SET setting=? WHERE name='pricelevel'";
			$stmt = $pdo->prepare(DbUtils::substTableAlias($updateSql));
			$stmt->execute(array($levelId));

			echo json_encode("OK");
		}
	}
	
	public function getSpeisekarte($pdo) {
		$legend = file_get_contents("../customer/menulegend.txt");

		$decpoint = $this->getDecPoint($pdo);
		
		$sql = "SELECT * FROM %products% WHERE removed is null";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute();
		$numberOfProds = $stmt->rowCount();
		
		$sql = "SELECT * FROM %prodtype% WHERE removed is null";
		$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
		$stmt->execute();
		$numberOfProdTypes = $stmt->rowCount();
		
		$predef = file_get_contents ("../customer/speisekarte.txt");
		$predef = str_replace('{.}',$decpoint,$predef);
		if (($numberOfProds == 0) && ($numberOfProdTypes == 0)) {
			// no products defined yet - present Beispiel
			$text = $legend;
		} else {
			$text = $legend . $this->readDbProducts($pdo);
		}
		
		return array("status" => "OK","msg" => $text, "predef" => $predef);
	}
	
	private function endsWith($haystack, $needle)
	{
		return $needle === "" || substr($haystack, -strlen($needle)) === $needle;
	}
	
	private function getAudioFiles() {
		$dir    = '../customer';
		$fileList = scandir($dir);
		$audioFiles = array();
		
		foreach ($fileList as $aFile) {
			if ($this->endsWith($aFile, '.mp3') || $this->endsWith($aFile, '.ogg') || $this->endsWith($aFile, '.wav')) {
				$audioFiles[] = $aFile;
			}
		}

		echo json_encode($audioFiles);
	}
}

?>