package PL;

import BL.IBL;
import SharedResources.Shift;
import SharedResources.Worker;

import java.io.IOException;
import java.util.List;
import java.util.Scanner;


public class PLImpl {
    static Scanner in=new Scanner(System.in);
    private IBL bl;
    private boolean showMenu;
    private boolean exit;
    private String authority;
    private boolean firstInsTry;
    public PLImpl(IBL bl){
        this.bl=bl;
        showMenu = true;
        firstInsTry=true;
        authority="0";
        exit=false;
    }

    public void runSystem()
    {
        while(true)
        {
            if(showMenu)
            {
                System.out.println("----- Welcome! ----- \n");
                System.out.println("please enter your ID, or press 0 to exit the system:");
            }
            String choose = in.next();
            if(Integer.parseInt(choose)==0){
                exit = true;
            }
            if(!(bl.isValidId(choose))){
                System.out.println("invalid ID, enter ID again, or press 0 to exit the system:");
                showMenu=false;
                break;
            }
            Worker w = bl.findWorker(choose);
            if(w==null){
                System.out.println("Worker not found, enter ID again, or press 0 to exit the system:");
                showMenu=false;
                break;
            }
            authority = w.getAuthority();
            switch (authority)
            {
                case "0":
                    System.out.println("To insert hours and days you can work in, press 1");
                    System.out.println("To watch your shifts starting from some date, press 2");
                    System.out.println("To change your First name, press 3");
                    System.out.println("To change your Last name, press 4");
                    System.out.println("To change your phone number, press 5");
                    System.out.println("To exit the system, press 20");
                case "1":
                    System.out.println("To insert hours and days you can work in, press 1");
                    System.out.println("To watch your shifts starting from some date, press 2");
                    System.out.println("To change your First name, press 3");
                    System.out.println("To change your Last name, press 4");
                    System.out.println("To change your phone number, press 5");
                    System.out.println("To add a worker to a shift, press 6");
                    System.out.println("To delete a worker from a shift, press 7");
                    System.out.println("To watch the available workers of some specializtion in a shift, press 8");
                    System.out.println("To change a worker Bank Name, press 9");
                    System.out.println("To change a worker Bank Branch code details, press 10");
                    System.out.println("To change a worker Bank Account Number, press 11");
                    System.out.println("To watch the workers in some shift, press 12");
                    System.out.println("To exit the system, press 20");
                case "2":
                    System.out.println("To watch the workers in some shift, press 12");
                    System.out.println("To insert a new shift, press 13");
                    System.out.println("To delete a shift, press 14");
                    System.out.println("To insert a new worker, press 15");
                    System.out.println("To update a worker, press 16");
                    System.out.println("To fire a worker/set its end working date, press 17");
                    System.out.println("To make a worker a shift manager, press 18");
                    System.out.println("To make a worker an admin, press 19");
                    System.out.println("To exit the system, press 20");
            }
            int option=in.nextInt();
            switch(option)
            {
                case 1:
                    insertHoursDays(w);
                    showMenu=true;
                    break;
                case 2:
                    watchShifts(w);
                    showMenu=true;
                    break;
                case 3:
                    updateFirstName(w);
                    showMenu=true;
                    break;
                case 4:
                    updateLastName(w);
                    showMenu=true;
                    break;
                case 5:
                    updatePhoneNumber(w);
                    showMenu=true;
                    break;
                case 6:
                    addWorkerToShift();
                    showMenu=true;
                    break;
                case 7:
                    deleteWorkerFromShift();
                    showMenu=true;
                    break;
                case 8:
                    watchSpecShiftWorkersList();
                    showMenu=true;
                    break;
                case 9:
                    updateBankName();
                    showMenu=true;
                    break;
                case 10:
                    updateBranchCode();
                    showMenu=true;
                    break;
                case 11:
                    updateBankAccountCode();
                    showMenu=true;
                    break;
                case 12:
                    getWorkersInShift();
                    showMenu=true;
                    break;
                case 13:
                    insertShift();
                    showMenu=true;
                    break;
                case 14:
                    deleteShift();
                    showMenu=true;
                    break;
                case 15:
                    insertWorker();
                    showMenu=true;
                    break;
                case 16:
                    updateAll();
                    showMenu=true;
                    break;
                case 17:
                    fireWorker();
                    showMenu=true;
                    break;
                case 18:
                    makeShiftManager();
                    showMenu=true;
                    break;
                case 19:
                    makeAdmin();
                    showMenu=true;
                    break;
                case 20:
                    exit=true;
                    break;
                default:
                    System.out.println(option+" is not a valid option, please try again");
                    showMenu=false;
            }
            if(exit)
                break;
        }
        System.out.println("Bye, See you later! :)");
    }
    private void updateBankAccountCode(Worker w) {
        System.out.println("Please insert the new bank account number");
        String accountNum = in.next();
        if(bl.isValidBankNumber(accountNum)){
            if(bl.updateBankDetails(w.getID(),accountNum, w.getBankName(),w.getBranchCode())){
                System.out.println("You have successfully updated your bank account number to "+accountNum);
                againExitMenu(26,true,w);
            }
            else
                errMsg("An error occured while trying to update your account number",26,w);
        }
        else
            errMsg("The account number you've entered is not valid",26,w);

    }


    private void updateBankAccountCode() {
        System.out.println("Please enter the worker's ID");
        String id = in.next();
        if(id==null){
            errMsg("Incorrect ID format",11);
        }
        Worker w=bl.findWorker(id);
        if(w==null){
            errMsg("User not found",11);
        }
        System.out.println("Please insert the new bank account number");
        String accountNum = in.next();
        if(bl.isValidBankNumber(accountNum)){
            if(bl.updateBankDetails(w.getID(),accountNum, w.getBankName(),w.getBranchCode())){
                System.out.println("You have successfully updated your bank account number to "+accountNum);
                againExitMenu(11,true);
            }
            else
                errMsg("An error occured while trying to update your account number",11);
        }
        else
            errMsg("The account number you've entered is not valid",11);

    }

    private void updateBranchCode(Worker w) {
        System.out.println("Please insert the new bank account number");
        String branchCode = in.next();
        if(bl.isValidBranchCode(branchCode)){
            if(bl.updateBankDetails(w.getID(),w.getBranchCode(), w.getBankName(),branchCode)){
                System.out.println("You have successfully updated your bank branch code to "+branchCode);
                againExitMenu(25,true,w);
            }
            else
                errMsg("An eror occured while trying to update your bank branch code",25,w);
        }
        else
            errMsg("The bank branch code you've entered is not valid",25,w);

    }

    private void updateBranchCode() {
        System.out.println("Please enter the worker's ID");
        String id = in.next();
        if(id==null){
            errMsg("Incorrect ID format",10);
        }
        Worker w=bl.findWorker(id);
        if(w==null){
            errMsg("User not found",10);
        }
        System.out.println("Please insert the new bank account number");
        String branchCode = in.next();
        if(bl.isValidBranchCode(branchCode)){
            if(bl.updateBankDetails(w.getID(),w.getBranchCode(), w.getBankName(),branchCode)){
                System.out.println("You have successfully updated your bank branch code to "+branchCode);
                againExitMenu(10,true);
            }
            else
                errMsg("An eror occured while trying to update your bank branch code",10);
        }
        else
            errMsg("The bank branch code you've entered is not valid",10);

    }
    private void updateBankName(Worker w) {
        System.out.println("Please insert the new bank account number");
        String bankName = in.next();
        if(bl.updateBankDetails(w.getID(),w.getBranchCode(), bankName,w.getBranchCode())){
            System.out.println("You have successfully updated your bank name to "+bankName);
            againExitMenu(24,true,w);
        }
        else
            errMsg("An eror occured while trying to update your bank name",24,w);
    }

    private void updateBankName() {
        System.out.println("Please enter the worker's ID");
        String id = in.next();
        if(id==null){
            errMsg("Incorrect ID format",9);
        }
        Worker w=bl.findWorker(id);
        if(w==null){
            errMsg("User not found",9);
        }
        System.out.println("Please insert the new bank account number");
        String bankName = in.next();
        if(bl.updateBankDetails(w.getID(),w.getBranchCode(), bankName,w.getBranchCode())){
            System.out.println("You have successfully updated your bank name to "+bankName);
            againExitMenu(9,true);
        }
        else
            errMsg("An eror occured while trying to update your bank name",9);
    }

    private void updateLastName(Worker w) {
        System.out.println("Please insert the new last name");
        String lname = in.next();
        if(bl.isValidName(lname)){
            if(bl.updateName(w.getID(), w.getFirstName(), lname)){
                System.out.println("You have successfully updated your last name to "+lname);
                againExitMenu(4,true,w);
            }
            else
                errMsg("An eror occured while trying to update your last name",4,w);
        }
        else
            errMsg("The last name you've entered is not valid",4,w);
    }

    private void updateFirstName(Worker w) {
        System.out.println("Please insert the new first name");
        String fname = in.next();
        if(bl.isValidName(fname)){
            if(bl.updateName(w.getID(), fname, w.getLastName())){
                System.out.println("You have successfully updated your first name to "+fname);
                againExitMenu(3,true,w);
            }
            else
                errMsg("An eror occured while trying to update your first name",3,w);
        }
        else
            errMsg("The first name you've entered is not valid",3,w);
    }

    private void getWorkersInShift() {
        System.out.println("Please enter the desired date:");
        String date  = in.next();
        System.out.println("Please enter the time of the day:");
        String timeAtDay  = in.next();
        if(bl.isValidDate(date)){
            if(bl.isValidShift(timeAtDay)){
                List<Worker> ls = bl.getWorkersInShift( date, timeAtDay);
                if(ls!=null){
                    int i=1;
                    for(Worker w : ls){
                        System.out.println("Shift number "+i);
                        System.out.println("Worker ID: "+w.getID());
                        System.out.println("First Name: "+w.getFirstName());
                        System.out.println("Last Name: "+w.getLastName());
                        System.out.println("Phone number: "+w.getPhoneNumber());
                        i++;
                    }
                    againExitMenu(12,true);
                }
                else
                    errMsg("There are no workers in this shift",12);
            }
            else
                errMsg("The time of day you entered is not valid", 12);
        }
        else
            errMsg("You have inserted invalid date",12);
    }

    private void watchSpecShiftWorkersList() {
        System.out.println("Please enter the desired day:");
        String day  = in.next();
        System.out.println("Please enter the time of the day:");
        String timeAtDay  = in.next();
        System.out.println("Please enter the desired specializtion");
        String spec  = in.next();
        if(bl.isValidDay(day)){
            if(bl.isValidShift(timeAtDay)){
                List<Worker> ls = bl.getWorkerForShift(spec, day, timeAtDay);
                if(ls!=null){
                    int i=1;
                    for(Worker w : ls){
                        System.out.println("Shift number "+i);
                        System.out.println("Worker ID: "+w.getID());
                        System.out.println("First Name: "+w.getFirstName());
                        System.out.println("Last Name: "+w.getLastName());
                        System.out.println("Phone number: "+w.getPhoneNumber());
                        i++;
                    }
                    againExitMenu(8,true);
                }
                else
                    errMsg("The worker is not signed to shifts from this date",8);
            }
            else
                errMsg("The time of day you entered is not valid", 8);
        }
        else
            errMsg("You have inserted invalid day",8);
    }

    private void fireWorker() {
        System.out.println("Please enter the worker's ID");
        String id = in.next();
        if(id==null){
            errMsg("Incorrect ID format",17);
        }
        Worker w=bl.findWorker(id);
        if(w==null){
            errMsg("User not found",17);
        }
        System.out.println("Please insert the end date");
        String endDate = in.next();
        if(bl.isValidDate(endDate)){
            if(bl.updateEndDate(w.getID(), endDate)){
                System.out.println("You have successfully updated the end date to "+endDate);
                againExitMenu(17,true);
            }
            else
                errMsg("An eror occured while trying to update the end date",17);
        }
        else
            errMsg("The end date you've entered is not valid",17);

    }

    private void deleteShift() {
        System.out.println("Please enter the desired date:");
        String date  = in.next();
        System.out.println("Please enter the time of the day:");
        String timeAtDay  = in.next();
        if(bl.isValidDate(date)){
            if(bl.isValidShift(timeAtDay)){
                if(bl.deleteShift(date, timeAtDay)){
                    System.out.println("You have successfully deleted a shift at " +date + ", "+timeAtDay);
                    againExitMenu(14,true);
                }
                else
                    errMsg("No shift at this date and time of day",14);
            }
            else
                errMsg("You have inserted invalid part of day",14);
        }
        else
            errMsg("You have inserted invalid date",14);
    }

    private void insertShift() {
        System.out.println("Please enter the desired date:");
        String date  = in.next();
        System.out.println("Please enter the time of the day:");
        String timeAtDay  = in.next();
        if(bl.isValidDate(date)){
            if(bl.isValidShift(timeAtDay)){
                if(bl.insertShift(date, timeAtDay)){
                    System.out.println("You have successfully inserted a shift at " +date + ", "+timeAtDay);
                    againExitMenu(13,true);
                }
                else
                    errMsg("You have already inserted this shift",13);
            }
            else
                errMsg("You have inserted invalid part of day",13);
        }
        else
            errMsg("You have inserted invalid date",13);
    }

    private void makeShiftManager() {
        System.out.println("Please enter the worker's ID");
        String id = in.next();
        if(id==null){
            errMsg("Incorrect ID format",18);
        }
        Worker w=bl.findWorker(id);
        if(w==null){
            errMsg("User not found",18);
        }
        if(bl.updateStartEmployingDate("1", w.getID())){
            System.out.println("You have successfully updated the authority to Shift manager");
            againExitMenu(18,true);
        }
        else
            errMsg("An eror occured while trying to update to shift manager",18);
    }

    private void makeAdmin() {
        System.out.println("Please enter the worker's ID");
        String id = in.next();
        if(id==null){
            errMsg("Incorrect ID format",19);
        }
        Worker w=bl.findWorker(id);
        if(w==null){
            errMsg("User not found",19);
        }
        if(bl.updateStartEmployingDate("2", w.getID())){
            System.out.println("You have successfully updated the authority to admin");
            againExitMenu(19,true);
        }
        else
            errMsg("An eror occured while trying to update to admin",19);
    }

    private void deleteWorkerFromShift() {
        System.out.println("Please enter the worker ID  you want to sign");
        String id  = in.next();
        System.out.println("Please enter the date of the shift");
        String date = in.next();
        System.out.println("Please enter the time at day of the shift");
        String timeAtDay = in.next();
        if(bl.isValidId(id)){
            if(bl.isValidDate(date)){
                if(bl.isValidShift(timeAtDay)){
                    if(bl.deleteWorkerFromShift(id, date, timeAtDay)){
                        System.out.println("You have successfully deleted worker with ID" +id + ", from the shift at "+date+" ,"+timeAtDay);
                        againExitMenu(7,true);
                    }
                    else
                        errMsg("Worker not in this shift",7);
                }
                else
                    errMsg("The time of day you entered is not valid", 7);
            }
            else
                errMsg("The date you entered is not valid", 7);
        }
        else
            errMsg("The worker ID you entered is not valid", 7);
    }

    private void addWorkerToShift() {
        System.out.println("Please enter the worker ID  you want to sign");
        String id  = in.next();
        System.out.println("Please enter the date of the shift");
        String date = in.next();
        System.out.println("Please enter the time at day of the shift");
        String timeAtDay = in.next();
        if(bl.isValidId(id)){
            if(bl.isValidDate(date)){
                if(bl.isValidShift(timeAtDay)){
                    if(bl.insertShiftToWorker(id, date, timeAtDay)){
                        System.out.println("You have successfully added worker with ID" +id + ", to the shift at "+date+" ,"+timeAtDay);
                        againExitMenu(6,true);
                    }
                    else
                        errMsg("Worker already in this shift",6);
                }
                else
                    errMsg("The time of day you entered is not valid", 6);
            }
            else
                errMsg("The date you entered is not valid", 6);
        }
        else
            errMsg("The worker ID you entered is not valid", 6);
    }

    private void watchShifts(Worker w) {
        System.out.println("Please enter the desired date");
        String date  = in.next();
        if(bl.isValidDate(date)){
            List<Shift> ls = bl.getShiftsForWorker(date, w.getID());
            if(ls!=null){
                int i=1;
                for(Shift s : ls){
                    System.out.println("Shift number "+i);
                    System.out.println("Date: "+s.getDate());
                    System.out.println("Time at day: "+s.getTimeAtDay());
                    i++;
                }
                againExitMenu(2,true,w);
            }
            else
                errMsg("The worker is not signed to shifts from this date",2,w);
        }
        else
            errMsg("You have inserted invalid date",2,w);
    }

    private void insertHoursDays(Worker w) {
        System.out.println("please enter the day you can work in:");
        String day  = in.next();
        System.out.println("Please enter the start hour");
        String startHour = in.next();
        System.out.println("Please enter the end hour");
        String endHour = in.next();
        if(bl.isValidDay(day)){
            if(bl.isValidHour(startHour)){
                if(bl.isValidHour(endHour)){
                    String dayPart = bl.getTimeAtDay(startHour, endHour);
                    if(bl.insertAvailableWorker(w.getID(), day, dayPart)){
                        System.out.println("You have successfully added the option to a shift at " +day + ", "+dayPart);
                        againExitMenu(1,true,w);
                    }
                    else
                        errMsg("You have already joined this shift",1,w);
                }
                else
                    errMsg("You have inserted invalid end hour",1,w);
            }
            else
                errMsg("You have inserted invalid start hour",1,w);
        }
        else
            errMsg("You have inserted invalid day",1,w);
    }

    private void insertWorker(){

        if(firstInsTry)
            System.out.println("Please insert the new worker's details below");
        System.out.println("Id:");
        String id=in.next();
        System.out.println("First Name:");
        String fn=in.next();
        System.out.println("Last Name:");
        String ln=in.next();
        System.out.println("Salary:");
        int sal=in.nextInt();
        System.out.println("Bank account number:");
        String accountNumber=in.next();
        System.out.println("Bank name:");
        String BankName=in.next();
        System.out.println("branch Code:");
        String branchCode=in.next();
        System.out.println("Start Date:");
        String sDate=in.next();
        System.out.println("Employee Conditions:");
        String empCond=in.next();
        System.out.println("Phone Number:");
        String phone=in.next();
        if(bl.isValidId(id))
        {
            if(bl.isValidName(fn))
            {
                if(bl.isValidName(ln))
                {
                    if(bl.isValidSalary(sal))
                    {
                        if(bl.isValidBankNumber(accountNumber))
                        {
                            if(bl.isValidBranchCode(branchCode))
                            {
                                if(bl.isValidDate(sDate))
                                {
                                    if(bl.isValidPhoneNumber(phone))
                                    {
                                        if(bl.insertWorker(id, fn, ln, sal, accountNumber, BankName, sDate, phone, "0", empCond, "", branchCode))
                                        {
                                            System.out.println("You have successfully added "+fn+" "+ln+" to the system");
                                            againExitMenu(15,true);
                                        }
                                        else
                                            errMsg("ID already exists in system",15);
                                    }
                                    else
                                        errMsg("the phone number you entered is not not valid",15);
                                }
                                else
                                    errMsg("The start date you've entered is not valid",15);
                            }
                            else
                                errMsg("The bank branch code you've entered is not valid",15);
                        }
                        else
                            errMsg("The bank account number you've entered is not valid",15);
                    }
                    else
                        errMsg("The salary you've entered is not valid",15);
                }
                else
                    errMsg("The last name you've entered is not valid",15);
            }
            else
                errMsg("The first name you've entered is not valid",15);
        }
        else
            errMsg("The ID you've entered is not valid",15);
    }


    private void updateAll()
    {
        System.out.println("Please enter the worker's ID");
        String id = in.next();
        if(id==null){
            errMsg("Incorrect ID format",16);
        }
        Worker w=bl.findWorker(id);
        if(w==null){
            errMsg("User not found",16);
        }
        System.out.println("To update first name - press 1");
        System.out.println("To update last name - press 2");
        System.out.println("To update salary - press 3");
        System.out.println("To update employee conditions - press 4");
        System.out.println("To update start date - press 5");
        System.out.println("To update phone number - press 6");
        System.out.println("To update end date - press 7");
        System.out.println("To update bank name - press 8");
        System.out.println("To update account number - press 9");
        System.out.println("To update bank nambranch code - press 10");

        int ans = in.nextInt();
        switch (ans){
            case 1:
                updateFirstName(w);
            case 2:
                updateLastName(w);
            case 3:
                updateSalary(w);
            case 4:
                updateEmpConditions(w);
            case 5:
                updateStartDate(w);
            case 6:
                updatePhoneNumber(w);
            case 7:
                updateEndDate(w);
            case 8:
                updateBankName(w);
            case 9:
                updateBankAccountCode(w);
            case 10:
                updateBranchCode(w);
            default:
                againExitMenu(1,false);
        }
    }

    private void updateEndDate(Worker w) {
        System.out.println("Please insert the end date");
        String endDate = in.next();
        if(bl.isValidDate(endDate)){
            if(bl.updateEndDate(w.getID(), endDate)){
                System.out.println("You have successfully updated the end date to "+endDate);
                againExitMenu(23,true,w);
            }
            else
                errMsg("An error occured while trying to update the end date",23);
        }
        else
            errMsg("The end date you've entered is not valid",23,w);

    }


    private void updatePhoneNumber(Worker w) {
        System.out.println("Please insert the new phone number");
        String phone = in.next();
        if(bl.isValidPhoneNumber(phone)){
            if(bl.updatePhoneNumber( phone,w.getID())){
                System.out.println("You have successfully updated the phone to "+phone);
                againExitMenu(5,true,w);
            }
            else
                errMsg("An error occured while trying to update the phone number",5,w);
        }
        else
            errMsg("The phone number you've entered is not valid",5,w);
    }

    private void updateEmpConditions(Worker w) {
        System.out.println("Please insert the new employee conditions");
        String empCon = in.next();
        if(bl.updateEmpConditions(w.getID(), empCon)){
            System.out.println("You have successfully updated the employee conditions "+empCon);
            againExitMenu(21,true,w);
        }
        else{
            errMsg("An error occured while trying to update the employee conditions",21,w);
        }
    }

    private void updateStartDate(Worker w) {
        System.out.println("Please insert the new start date");
        String stdate = in.next();
        if(bl.isValidDate(stdate)){
            if(bl.updateStartEmployingDate(stdate, w.getID())){
                System.out.println("You have successfully updated the start date to "+stdate);
                againExitMenu(22,true,w);
            }
            else
                errMsg("An error occured while trying to update the start date",22,w);
        }
        else
            errMsg("The start date you've entered is not valid",22,w);

    }

    private void updateSalary(Worker w) {
        System.out.println("Please insert the new start date");
        int sal = in.nextInt();
        if(bl.isValidSalary(sal)){
            if(bl.updateSalary(w.getID(), sal)){
                System.out.println("You have successfully updated the salary to "+sal);
                againExitMenu(28,true,w);
            }
            else
                errMsg("An error occured while trying to update the salary",28,w);
        }
        else
            errMsg("The salary you've entered is not valid",28,w);


    }

    private void againExitMenu(int type, boolean suc, Worker w)
    {
        if(!suc)
            System.out.println("To try again, press 2");
        System.out.println("To go back to main menu, press 3");
        System.out.println("To exit, press 4");
        int op=in.nextInt();
        switch(op)
        {
            case 2:
                switch(type)
                {
                    case 1:
                        insertHoursDays(w);
                    case 2:
                        watchShifts(w);
                    case 3:
                        updateFirstName(w);
                    case 4:
                        updateLastName(w);
                    case 5:
                        updatePhoneNumber(w);
                    case 21:
                        updateEmpConditions(w);
                    case 22:
                        updateStartDate(w);
                    case 23:
                        updateEndDate(w);
                    case 24:
                        updateBankName(w);
                    case 25:
                        updateBranchCode(w);
                    case 26:
                        updateBankAccountCode(w);
                    case 28:
                        updateSalary(w);
                }
                break;
            case 3:
                break;
            case 4:
                exit=true;
                break;
            default:
                System.out.println(op+" is not a valid option, please try again");
                againExitMenu(type,suc);
        }
    }

    private void againExitMenu(int type, boolean suc)
    {
        if(!suc)
            System.out.println("To try again, press 2");
        System.out.println("To go back to main menu, press 3");
        System.out.println("To exit, press 4");
        int op=in.nextInt();
        switch(op)
        {
            case 2:
                switch(type)
                {
                    case 6:
                        addWorkerToShift();
                    case 7:
                        deleteWorkerFromShift();
                    case 8:
                        watchSpecShiftWorkersList();
                    case 9:
                        updateBankName();
                    case 10:
                        updateBranchCode();
                    case 11:
                        updateBankAccountCode();
                    case 12:
                        getWorkersInShift();
                    case 13:
                        insertShift();
                    case 14:
                        deleteShift();
                    case 15:
                        insertWorker();
                    case 16:
                        updateAll();
                    case 17:
                        fireWorker();
                    case 18:
                        makeShiftManager();
                    case 19:
                        makeAdmin();
                }
                break;
            case 3:
                break;
            case 4:
                exit=true;
                break;
            default:
                System.out.println(op+" is not a valid option, please try again");
                againExitMenu(type,suc);
        }
    }


    private void errMsg(String msg,int type)
    {
        System.out.println(msg);
        againExitMenu(type,false);
    }



    private void errMsg(String msg,int type,Worker w)
    {
        System.out.println(msg);
        againExitMenu(type,false,w);
    }

}