ordersprinter/webapp/php/customers.php

<?php
// Datenbank-Verbindungsparameter
require_once ('dbutils.php');
require_once ('commonutils.php');
require_once ('admin.php');
require_once ('reports.php');
require_once ('utilities/pdfexport.php');
require_once ('utilities/Emailer.php');
require_once ('3rdparty/phpexcel/classes/PHPExcel.php');

class Customers {
	
	private static $rights = array(
		"createNewCustomer"	    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("customers")),
		"deleteCustomer"	    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("customers")),
		"changeCustomer"	    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("customers")),
		"getCustomers"		    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("customers")),
		"createNewGroup"	    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("customers")),
		"getGroups"		    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("customers")),
		"changeGroup"		    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("customers")),
		"deleteGroup"		    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("customers")),
		"getVacations"		    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("customers")),
		"newVacation"		    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("customers")),
		"delVacation"		    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("customers")),
		"getCustomersForReserv"	    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("reservation")),
		"getBills"		    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("customers")),
		"pay"			    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("customers")),
		"unpay"			    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("customers")),
		"printbill"		    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("customers")),
		"payallbills"		    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("customers")),
		"printallbills"		    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("customers")),
		"emailGroup"		    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("customers")),
		"exportLog"		    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("customers")),
		"getPaymentsForGuest"	    => array("loggedin" => 1, "isadmin" => 0, "rights" => array("customers"))
	    );
	
	public static $CANCEL = 0;
	public static $PAY = 1;
	
	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 == 'customers') {
				if ($_SESSION['right_customers'] == 1) {
				    return true;
				}
		    }
		    if ($aRight == 'reservation') {
			    if ($_SESSION['right_reservation'] == 1) {
				    return true;
			    }
		    }
		}
		echo json_encode(array("status" => "ERROR", "code" => ERROR_NOT_AUTHOTRIZED, "msg" => ERROR_NOT_AUTHOTRIZED_MSG));
		return false;
	    }
	    return true;
	}
	
	function __construct() {
		//
	}
	
	function handleCommand($command) {
		if (!self::checkRights($command)) {
			return false;
		}

		$pdo = DbUtils::openDbAndReturnPdoStatic();
		if ($command == 'createNewCustomer') {
			echo json_encode($this->createNewCustomer($pdo,$_POST['name'],$_POST['email'],$_POST['addr'],$_POST['remark'],$_POST['phone'],$_POST['mobil'],$_POST['www'],$_POST['checkin'],$_POST['checkout'],$_POST['room']));
		} else if ($command == 'deleteCustomer') {
			echo json_encode($this->deleteCustomer($pdo,$_POST['id']));
		} else if ($command == 'changeCustomer') {
			echo json_encode($this->changeCustomer($pdo,$_POST["id"],$_POST['name'],$_POST['email'],$_POST['addr'],$_POST['remark'],$_POST['phone'],$_POST['mobil'],$_POST['www'],$_POST["groups"]));
		} else if ($command == 'getCustomers') {
			echo json_encode($this->getCustomers($pdo,$_POST['search'],$_POST['date'],$_POST['onlyopenbills']));
		} else if ($command == 'createNewGroup') {
			echo json_encode($this->createNewGroup($pdo,$_POST['name'],$_POST['remark']));
		} else if ($command == 'getGroups') {
			echo json_encode($this->getGroups($pdo,$_POST['search']));
		} else if ($command == 'changeGroup') {
			echo json_encode($this->changeGroup($pdo,$_POST["id"],$_POST['name'],$_POST['remark']));
		} else if ($command == 'deleteGroup') {
			echo json_encode($this->deleteGroup($pdo,$_POST['id']));
		} else if ($command == 'getCustomersForReserv') {
			echo json_encode($this->getCustomersForReserv($pdo,$_POST['search']));
		} else if ($command == 'getVacations') {
			echo json_encode($this->getVacations($pdo,$_GET['cusid']));
		} else if ($command == 'newVacation') {
			echo json_encode($this->newVacation($pdo,$_POST['id'],$_POST['checkin'],$_POST['checkout'],$_POST['room'],$_POST['remark']));
		} else if ($command == 'delVacation') {
			echo json_encode($this->delVacation($pdo,$_POST['id']));
		} else if ($command == 'getBills') {
			echo json_encode($this->getBills($pdo,$_GET['cusid']));
		} else if ($command == 'pay') {
			echo json_encode($this->pay($pdo,$_POST['id'],$_POST['paymentid']));
		} else if ($command == 'unpay') {
			echo json_encode($this->unpay($pdo,$_POST['id'],$_POST["code"],$_POST["remark"]));
		} else if ($command == 'printbill') {
			echo json_encode($this->printBill($pdo,$_POST['id']));
		} else if ($command == 'payallbills') {
			echo json_encode($this->payallbills($pdo,$_POST['id'],$_POST['paymentid']));
		} else if ($command == 'printallbills') {
			echo json_encode($this->printallbills($pdo,$_POST['id']));
		} else if ($command == 'emailGroup') {
			echo json_encode($this->emailGroup($pdo,$_POST['groupid'],$_POST["subject"],$_POST["text"]));
		} else if ($command == 'getPaymentsForGuest') {
			echo json_encode($this->getPaymentsForGuest($pdo));
		} else if ($command == 'exportLog') {
			self::exportLog($pdo);
		} else {
			echo "Command not supported.";
		}
	}

	// for internal request
	private function hasCurrentUserCustomersRights() {
		session_start();
		if (!isset($_SESSION['angemeldet']) || !$_SESSION['angemeldet']) {
			// no user logged in
			return false;
		} else {
			return ($_SESSION['right_customers']);
		}
	}

	private function createNewCustomer($pdo,$name,$email,$addr,$remark,$phone,$mobil,$www,$checkin,$checkout,$room) {
		date_default_timezone_set(DbUtils::getTimeZone());
		$currentTime = date('Y-m-d H:i:s');
		
		if ($checkin == '') {
			$checkin = null;
		}
		if ($checkout == '') {
			$checkout = null;
		}
		if ($room == '') {
			$room = null;
		}
		
		try {
			$pdo->beginTransaction();
			$sql = "SELECT count(id) as countid from %customers% WHERE name=?";
			$row = CommonUtils::getRowSqlObject($pdo, $sql, array($name));
			$number = $row->countid;
			if ($row->countid > 0) {
				$code = 1;	
			} else {
				$code = 0;
			}

			$sql = "INSERT INTO %customers% (name,email,address,remark,phone,mobil,www,created,lastmodified) VALUES(?,?,?,?,?,?,?,?,?)";		
			$stmt = $pdo->prepare(DbUtils::substTableAlias($sql));
			$stmt->execute(array($name,$email,$addr,$remark,$phone,$mobil,$www,$currentTime,$currentTime));
			$cusid = $pdo->lastInsertId();
			self::addVacationsCore($pdo,$cusid,$checkin,$checkout,$room,null);

			$pdo->commit();
			return array("status" => "OK","code" => $code, "value" => $number);
		} catch (Exception $e) {
			$pdo->rollBack();
			return array("status" => "ERROR","msg" => $e->getMessage());
		}
	}
	
	private static function addVacationsCore($pdo,$cusid,$checkin,$checkout,$room,$remark) {
		if ($checkin == '') {
			$checkin = null;
		}
		if ($checkout == '') {
			$checkout = null;
		}
		if (!is_null($checkin) || !is_null($checkout)) {
			$sql = "INSERT INTO %vacations% (customerid,checkin,checkout,room,remark) VALUES(?,?,?,?,?)";
			CommonUtils::execSql($pdo, $sql, array($cusid,$checkin,$checkout,$room,$remark));
		}
	}
	
	private function createNewGroup($pdo,$name,$remark) {
		date_default_timezone_set(DbUtils::getTimeZone());
		$currentTime = date('Y-m-d H:i:s');
		
		try {
			$sql = "SELECT count(id) as countid from %groups% WHERE name=?";
			$row = CommonUtils::getRowSqlObject($pdo, $sql, array($name));
			if ($row->countid > 0) {
				return array("status" => "ERROR","msg" => "Group name already exists","code" => 1);
			}
			$sql = "INSERT INTO %groups% (name,remark,created) VALUES(?,?,?)";
			CommonUtils::execSql($pdo, $sql, array($name,$remark,$currentTime));
			return array("status" => "OK");
		} catch (Exception $e) {
			return array("status" => "ERROR","msg" => $e->getMessage(),"code" => 2);
		}
	}
	
	private function changeCustomer($pdo,$id,$name,$email,$addr,$remark,$phone,$mobil,$www,$groups) {
		date_default_timezone_set(DbUtils::getTimeZone());
		$currentTime = date('Y-m-d H:i:s');

		try {
			$sql = "UPDATE %customers% SET name=?,email=?,address=?, remark=?, phone=?, mobil=?, www=?,lastmodified=? WHERE id=?";
			CommonUtils::execSql($pdo, $sql, array($name,$email,$addr,$remark,$phone,$mobil,$www,$currentTime,$id));
			
			$sql = "DELETE FROM %groupcustomer% WHERE customerid=?";
			CommonUtils::execSql($pdo, $sql, array($id));
			if ($groups != '') {
				foreach($groups as $aGroupId) {
					$sql = "INSERT INTO %groupcustomer% (customerid,groupid) VALUES(?,?)";
					CommonUtils::execSql($pdo, $sql, array($id,$aGroupId));
				}
			}
			
			return array("status" => "OK");
		} catch (Exception $e) {
			return array("status" => "ERROR","msg" => $e->getMessage());
		}
	}
	
	private function newVacation($pdo,$cusid,$checkin,$checkout,$room,$remark) {
		try {
			self::addVacationsCore($pdo,$cusid,$checkin,$checkout,$room,$remark);
			return array("status" => "OK","cusid" => $cusid);
		} catch (Exception $e) {
			return array("status" => "ERROR","msg" => $e->getMessage());
		}
	}
	
	private function delVacation($pdo,$id) {
		try {
			$pdo->beginTransaction();
			$sql = "SELECT count(id) as countid FROM %vacations% WHERE id=?";
			$row = CommonUtils::getRowSqlObject($pdo, $sql, array($id));
			if ($row->countid != 1) {
				$pdo->rollBack();
				return array("status" => "ERROR","msg" => "Vacations entry not found");
			} else {
				$sql = "SELECT customerid FROM %vacations% WHERE id=?";
				$row = CommonUtils::getRowSqlObject($pdo, $sql, array($id));
				$cusid = $row->customerid;
			
				$sql = "DELETE FROM %vacations% WHERE id=?";
				CommonUtils::execSql($pdo, $sql, array($id));
				$pdo->commit();
				return array("status" => "OK","cusid" => $cusid);
			}
		} catch (Exception $ex) {
			$pdo->rollBack();
			return array("status" => "ERROR","msg" => $ex->getMessage());
		}
	}
	
	private static function payOrUnpay($pdo,$id,$value,$doTransaction,$remark=null) {
		try {
			if ($doTransaction) {
				$pdo->beginTransaction();
			}
			$sql = "SELECT count(id) as countid FROM %bill% WHERE id=?";
			$row = CommonUtils::getRowSqlObject($pdo, $sql, array($id));
			if ($row->countid != 1) {
				if ($doTransaction) {
					$pdo->rollBack();
				}
				return array("status" => "ERROR","msg" => "Bill with id=$id not found");
			} else {
				$sql = "SELECT intguestid FROM %bill% WHERE id=?";
				$row = CommonUtils::getRowSqlObject($pdo, $sql, array($id));
				$cusid = $row->intguestid;
			
				$sql = "UPDATE %bill% SET intguestpaid=? WHERE id=?";
				CommonUtils::execSql($pdo, $sql, array($value,$id));
	
				date_default_timezone_set(DbUtils::getTimeZone());
				$currentTime = date('Y-m-d H:i:s');
				if(session_id() == '') {
					session_start();
				}
				$userid = $_SESSION['userid'];
				$sql = "INSERT INTO %customerlog% (date,action,customerid,userid,billid,remark) VALUES(?,?,?,?,?,?)";
				$action = (is_null($value) ? self::$CANCEL : self::$PAY);
				CommonUtils::execSql($pdo, $sql, array($currentTime,$action,$cusid,$userid,$id,$remark));
				
				if ($doTransaction) {
					$pdo->commit();
				}
				return array("status" => "OK","cusid" => $cusid);
			}
		} catch (Exception $ex) {
			if ($doTransaction) {
				$pdo->rollBack();
			}
			return array("status" => "ERROR","msg" => $ex->getMessage());
		}
	}
	
	private function pay($pdo,$id,$paymentid) {
		$paymentname = self::getPaymentName($pdo,$paymentid);
		return (self::payOrUnpay($pdo, $id, 1,true,$paymentname));
	}
	private function unpay($pdo,$id,$code,$remark) {
		$stornocode = CommonUtils::getConfigValue($pdo, 'cancelguestcode', null);
		if (is_null($stornocode)) {
			return array("status" => "ERROR","msg" => "Es wurde noch kein Stornocode in der Verwaltung festgelegt");
		}
		if ($stornocode != $code) {
			return array("status" => "ERROR","msg" => "Falscher Stornocode");
		}
		return (self::payOrUnpay($pdo, $id, null,true,$remark));
	}
	
	private function printBill($pdo,$billid) {
		if(session_id() == '') {
			session_start();
		}
		$printer = $_SESSION['receiptprinter'];

		// now get receipt info from bill table
		CommonUtils::log($pdo, "PRINTQUEUE", "Insert bill with id=$billid for printer=$printer into queue for customer.");

		$printInsertSql = "INSERT INTO `%printjobs%` (`id` , `content`,`type`,`printer`) VALUES ( NULL,?,?,?)";
		CommonUtils::execSql($pdo, $printInsertSql, array((string)($billid),'3',$printer));
		return array("status" => "OK");
	}
	
	private function printallbills($pdo,$cusid) {
		$sql = "SELECT id FROM %bill% WHERE intguestid=?";
		$result = CommonUtils::fetchSqlAll($pdo, $sql, array($cusid));
		foreach($result as $aBill) {
			$this->printBill($pdo, $aBill["id"]);
		}
		return array("status" => "OK");
	}
	
	private function payallbills($pdo,$cusid,$paymentid) {
		try {
			$pdo->beginTransaction();
			$paymentname = self::getPaymentName($pdo,$paymentid);
			$sql = "SELECT id FROM %bill% WHERE intguestpaid is null AND intguestid=?";
			$result = CommonUtils::fetchSqlAll($pdo, $sql, array($cusid));
			foreach($result as $aBill) {
				$ok = self::payOrUnpay($pdo, $aBill["id"], 1,false,$paymentname);
				if ($ok["status"] != "OK") {
					$pdo->rollBack();
					return $ok;
				}
			}
			$pdo->commit();
			return array("status" => "OK","cusid" => $cusid);
		} catch (Exception $ex) {
			$pdo->rollBack();
			return array("status" => "ERROR","msg" => $ex->getMessage());
		}
	}
	private function deleteCustomer($pdo,$id) {
		try {
			$sql = "SELECT count(id) as countid FROM %bill% WHERE intguestid=?";
			$row = CommonUtils::getRowSqlObject($pdo, $sql, array($id));
			if ($row->countid > 0) {
				return array("status" => "ERROR","msg" => "Der Gast hat zugewiesene Rechnungen");
			}
			
			$pdo->beginTransaction();
			$sql = "DELETE FROM %groupcustomer% WHERE customerid=?";
			CommonUtils::execSql($pdo, $sql, array($id));
			
			$sql = "DELETE FROM %vacations% WHERE customerid=?";
			CommonUtils::execSql($pdo, $sql, array($id));
			
			$sql = "DELETE FROM %customers% WHERE id=?";
			CommonUtils::execSql($pdo, $sql, array($id));
			$pdo->commit();
			
			return array("status" => "OK");
		} catch (Exception $e) {
			$pdo->rollBack();
			return array("status" => "ERROR","msg" => $e->getMessage());
		}
	}
	
	private function getCustomersForReserv($pdo,$search) {
		if ($search == '') {
			return array("status" => "OK","msg" => array());
		}
		
		$s = '%' . $search . '%';
		try {
			$allcustomers = array();
			
			$sql = "SELECT id,name,email,address,remark,phone,mobil FROM %customers% WHERE (name like ?) OR (mobil like ?) OR (phone like ?) ORDER BY name";
			$result = CommonUtils::fetchSqlAll($pdo, $sql, array($s,$s,$s));
			
			foreach($result as $aCustomer) {
				$id = $aCustomer["id"];
				$name = $aCustomer["name"];
				$email = $aCustomer["email"];
				$phone = $aCustomer["phone"];
				$mobil = $aCustomer["mobil"];
				
				$finalPhone = "";
				$summary = $aCustomer["name"];
				if ($phone != "") {
					$summary .= " - " . $phone;
					$finalPhone = $phone;
				}
				if ($mobil != "") {
					$summary .= " - " . $mobil;
					$finalPhone = $mobil;
				}
				if ($email != "") {
					$summary .= " - " . $email;
				}
				
				$allcustomers[] = array("summary" => $summary,"id" => $id,"name" => $name,"email" => $email,"phone" => $finalPhone);
			}
			
			return array("status" => "OK","msg" => $allcustomers);
			
		} catch (Exception $ex) {
			return array("status" => "ERROR","msg" => $ex->getMessage());
		}
	}
	
	private static function isCustomerPresent($pdo,$cusid,$date) {
		if ($date == '') {
			return true;
		}
		$sql = "SELECT count(id) as countid FROM %vacations% WHERE customerid=? AND (checkin is not null OR checkout is not null) AND (IFNULL(checkin,'$date') <= ? AND IFNULL(checkout,'$date') >= ?)";
		$row = CommonUtils::getRowSqlObject($pdo, $sql, array($cusid,$date,$date));
		if ($row->countid == 0) {
			return false;
		} else {
			return true;
		}
	}
	private function getCustomers($pdo,$search,$date,$onlyOpenBills) {
		$s = '%' . $search . '%';
		try {
			$allcustomers = array();
			
			//$sql = "SELECT id,name,email,address,remark,phone,mobil,www,IFNULL(checkin,'') as checkin,IFNULL(checkout,'') as checkout,IFNULL(room,'') as room,DATE_FORMAT(created,'%e %b %Y - %k:%i') as created,DATE_FORMAT(lastmodified,'%e %b %Y - %k:%i') as lastmodified FROM %customers% WHERE (name like ?) OR (email like ?) ORDER BY name";
			$sql = "SELECT %customers%.id as id,name,email,address,remark,phone,mobil,www,DATE_FORMAT(created,'%e %b %Y - %k:%i') as created,DATE_FORMAT(lastmodified,'%e %b %Y - %k:%i') as lastmodified FROM %customers% WHERE (name like ?) OR (email like ?) ORDER BY name";

			$result = CommonUtils::fetchSqlAll($pdo, $sql, array($s,$s));

			foreach ($result as $aCustomer) {
				if (!self::isCustomerPresent($pdo,$aCustomer["id"],$date)) {
					continue;
				}
				
				$sql = "SELECT groupid,name FROM %groupcustomer%,%groups% WHERE groupid=%groups%.id AND customerid=? ORDER BY name";
				$assgroups = CommonUtils::fetchSqlAll($pdo, $sql, array($aCustomer["id"]));
		
				if ($onlyOpenBills == 1) {
					$sql = "SELECT count(id) as countid FROM %bill% WHERE intguestid=? AND intguestpaid is null";
					$row = CommonUtils::getRowSqlObject($pdo, $sql, array($aCustomer["id"]));
					if ($row->countid == 0) {
						continue;
					}
				}
				
				$sql = "SELECT SUM(brutto) as openbillsum FROM %bill% WHERE intguestid=? AND intguestpaid is null";
				$row = CommonUtils::getRowSqlObject($pdo, $sql, array($aCustomer["id"]));
				
				$aCust = array("id" => $aCustomer["id"],
				    "name" => $aCustomer["name"],
				    "email" => $aCustomer["email"],
				    "address" => $aCustomer["address"],
				    "remark" => $aCustomer["remark"],
				    "phone" => $aCustomer["phone"],
				    "mobil" => $aCustomer["mobil"],
				    "www" => $aCustomer["www"],
				    "created" => $aCustomer["created"],
				    "lastmodified" => $aCustomer["lastmodified"],
				    "groups" => $assgroups,
				    "openbillsum" => $row->openbillsum
				);
				$allcustomers[] = $aCust;	
			}

			return array("status" => "OK","msg" => $allcustomers);
		} catch (Exception $ex) {
			return array("status" => "ERROR","msg" => $ex->getMessage());
		}
	}
	
	private function getVacations($pdo,$cusid) {
		$sql = "SELECT id,IFNULL(checkin,'') as checkin,IFNULL(checkout,'') as checkout,IFNULL(room,'') as room,IFNULL(remark,'') as remark FROM %vacations% WHERE customerid=?";
		$result = CommonUtils::fetchSqlAll($pdo, $sql, array($cusid));
		return array("status" => "OK","msg" => array("vacations" => $result,"cusid" => $cusid));
	}
	
	private function getBills($pdo,$cusid) {
		$sql = "SELECT id,billdate,brutto,IFNULL(guestinfo,'') as guestinfo,IFNULL(intguestpaid,'0') as paid FROM %bill% WHERE intguestid=?";
		$result = CommonUtils::fetchSqlAll($pdo, $sql, array($cusid));
		return array("status" => "OK","msg" => array("bills" => $result,"cusid" => $cusid));
	}
	
	private function getGroups($pdo,$search) {
		$s = '%' . $search . '%';
		try {
			$sql = "SELECT id,name,remark,DATE_FORMAT(created,'%e %b %Y - %k:%i') as created FROM %groups% WHERE name like ? ORDER BY name";
			$resultFiltered = CommonUtils::fetchSqlAll($pdo, $sql, array($s));
			
			$resultFoundGroups = array();
			foreach ($resultFiltered as $aFilteredGroup) {
				$groupid = $aFilteredGroup["id"];
				$sql = "SELECT %customers%.name as name from %customers%,%groupcustomer% WHERE %groupcustomer%.groupid=? AND %groupcustomer%.customerid=%customers%.id ORDER by name";
				$customersInGroup = CommonUtils::fetchSqlAll($pdo, $sql, array($groupid));
				$resultFoundGroups[] = array(
				    "id" => $groupid,
				    "name" => $aFilteredGroup["name"],
				    "remark" => $aFilteredGroup["remark"],
				    "created" => $aFilteredGroup["created"],
				    "customers" => $customersInGroup);
			}
			
			$sql = "SELECT id,name FROM %groups% ORDER BY name";
			$resultAll = CommonUtils::fetchSqlAll($pdo, $sql, array($s));

			$result = array("filtered" => $resultFoundGroups,"all" => $resultAll);
			return array("status" => "OK","msg" => $result);
		} catch (Exception $ex) {
			return array("status" => "ERROR","msg" => $ex->getMessage());
		}
	}
	
	private function changeGroup($pdo,$id,$name,$remark) {
		try {
			$sql = "UPDATE %groups% SET name=?,remark=? WHERE id=?";
			CommonUtils::execSql($pdo, $sql, array($name,$remark,$id));
			return array("status" => "OK");
		} catch (Exception $e) {
			return array("status" => "ERROR","msg" => $e->getMessage());
		}
	}
	private function deleteGroup($pdo,$id) {
		try {
			$sql = "DELETE FROM %groupcustomer% WHERE groupid=?";
			CommonUtils::execSql($pdo, $sql, array($id));
			
			$sql = "DELETE FROM %groups% WHERE id=?";
			CommonUtils::execSql($pdo, $sql, array($id));

			return array("status" => "OK");
		} catch (Exception $e) {
			return array("status" => "ERROR","msg" => $e->getMessage());
		}
	}
	
	private function emailGroup($pdo,$grpid,$subject,$text) {
		$sql = "SELECT %customers%.name as name ,%customers%.email as email from %customers%,%groupcustomer% WHERE %groupcustomer%.groupid=? AND %groupcustomer%.customerid=%customers%.id ORDER by name";
		$customersInGroup = CommonUtils::fetchSqlAll($pdo, $sql, array($grpid));
		
		$emails = array();
		foreach ($customersInGroup as $aCustomer) {
			$email = $aCustomer["email"];
			if (!is_null($email)) {
				$email = trim($email);
				if ($email != '') {
					$emails[] = $email;
				}
			}
		}
		
		$ok = true;
		foreach($emails as $anEmail) {
			if (!Emailer::sendEmail($pdo, $text, $anEmail, $subject)) {
				$ok = false;
			}
		}
		
		if ($ok) {
			return array("status" => "OK");
		} else {
			return array("status" => "ERROR","msg" => 'Not all emails could be sent');
		}
	}
	
	public static function exportLog($pdo,$startDate = null, $endDate = null) {
		header("Content-type: text/x-csv");
		header("Content-Disposition: attachment; filename=Gastbezahlungen.csv");
		header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
		header("Pragma: no-cache");
		header("Expires: 0");
		
		echo("Datum; Gast-ID; Gastname; Bon-ID; Aktion; Benutzer-ID; Benutzername; Stornobemerkung oder Zahlungsweg\n");
		
		$sql = "SELECT %customerlog%.date as date,CASE WHEN action=0 THEN 'Bezahlung storniert' WHEN action=1 THEN 'bezahlt' ELSE 'undefiniert' END as action,";
		$sql .= " %customerlog%.billid as billid,%customerlog%.remark as remark, userid, username, customerid, %user%.username as username, %customers%.name as customername  ";
		$sql .= " FROM %customerlog%,%user%,%customers% ";
		$sql .= " WHERE (userid=%user%.id AND customerid=%customers%.id) ";
		
		$where = '';
		
		if (is_null($startDate) && (!is_null($endDate))) {
			$where = " AND (date <= '$endDate') ";
		} else if (!is_null($startDate) && (!is_null($endDate))) {
			$where = " AND (date <= '$endDate') AND (date >= '$startDate') ";
		}
		$sql .= $where;
		
		$result = CommonUtils::fetchSqlAll($pdo, $sql, null);
		
		foreach($result as $aLog) {
			echo $aLog["date"] . ";";
			echo $aLog["customerid"] . ";";
			echo self::quoteForCsv($aLog["customername"]) . ";";
			echo $aLog["billid"] . ";";
			echo $aLog["action"] . ";";
			echo $aLog["userid"] . ";";
			echo self::quoteForCsv($aLog["username"]) . ";";
			echo self::quoteForCsv($aLog["remark"]) . ";";
			echo "\r\n";
		}
	}
	
	public static function quoteForCsv($txt) {
		$txt = str_replace("\"","\"\"",$txt);
		return '"' . $txt . '"';
	}
	
	
	private function getPaymentsForGuest($pdo) {
		if(session_id() == '') {
			session_start();
		}

		$where = " WHERE (id <> 7) AND (id <> 8)";
		
		$lang = $_SESSION['language'];
		$sql = "SELECT id,name FROM %payment% $where";
		if ($lang == 1) {
			$sql = "SELECT id,name_en as name FROM %payment% $where";
		} else if ($lang == 2) {
			$sql = "SELECT id,name_esp as name FROM %payment% $where";
		}
		
		$result = CommonUtils::fetchSqlAll($pdo, $sql, null);
		
		return array("status" => "OK","msg" => $result);
	}
	
	private static function getPaymentName ($pdo,$paymentid) {
		if(session_id() == '') {
			session_start();
		}

		$lang = $_SESSION['language'];
		$sql = "SELECT id,name FROM %payment% WHERE id=?";
		if ($lang == 1) {
			$sql = "SELECT id,name_en as name FROM %payment% WHERE id=?";
		} else if ($lang == 2) {
			$sql = "SELECT id,name_esp as name FROM %payment% WHERE id=?";
		}
		
		$row = CommonUtils::getRowSqlObject($pdo, $sql, array($paymentid));
		return $row->name;
	} 
}