using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CSF1Homework
{
    class ATM
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello, and welcome to UMB Bank!");
            Console.Title = "UMB Bank ATM Machine";

            int retryCount = 5;
            if (retryCount == 0)
            {
                Console.WriteLine("You have been locked out of the ATM."); //ask for help regarding this on Monday
            }

            else
            {


            start:

                Console.Write("Please enter your 7-digit account number: ");
                int accountNumber = Convert.ToInt32(Console.ReadLine());

                decimal accountBalance = 1000.00m;

                if (accountNumber == 1234567)
                {
                    restartPin:
                    Console.WriteLine("Hello, Devon, welcome to your account page!");
                    Console.Write("For security purposes, please enter in your 4-digit pin: ");
                    int pinNumber = Convert.ToInt32(Console.ReadLine());

                    if (pinNumber == 1234)
                    {
                        restartChoices:
                        Console.WriteLine("You have been granted access to your account! ");

                        Console.WriteLine("Choose an option: \n1) Deposits\n2) Withdraws\n3) Balance Inquiry\n4) Exit");
                        string userChoice = Console.ReadLine().ToLower();
                        switch (userChoice)
                        {
                            case "1":
                            case "deposits":
                            case "d":
                                Console.WriteLine("Your account currently has {0:c}.", accountBalance);
                                Console.WriteLine("How much money would you like to deposit to your account? $:");
                                decimal depositAmount = Convert.ToDecimal(Console.ReadLine());
                                accountBalance = accountBalance + depositAmount;
                                Console.WriteLine("You have successfully added {0:c} to your account. Your new account balance is {1:c}.", depositAmount, accountBalance);
                                Console.WriteLine("Would you like to go back to the main menu?: Y/N: ");
                                string userMainMenuDeposits = Console.ReadLine().ToLower();
                                    if (userMainMenuDeposits == "y" || userMainMenuDeposits == "yes")
                                    {
                                        goto restartChoices;
                                    }

                                    else
                                    {
                                        goto restartLogout;
                                    }

                                break;
                            case "2":
                            case "withdraws":
                            case "w":
                                Console.WriteLine("Your account currently has {0:c}.", accountBalance);
                                Console.WriteLine("How much money would you like to withdraw from your account? $:");
                                decimal withdrawAmount = Convert.ToDecimal(Console.ReadLine());
                                Console.WriteLine("You have successfully withdrawn {0:c} from your account. Your new account balance is {1:c}.", withdrawAmount, accountBalance);
                                Console.WriteLine("Would you like to go back to the main menu?: Y/N: ");
                                string userMainMenuWithdraws = Console.ReadLine().ToLower();
                                if (userMainMenuWithdraws == "y" || userMainMenuWithdraws == "yes")
                                {
                                    goto restartChoices;
                                }

                                else
                                {
                                    goto restartLogout;
                                }
                                break;

                            case "3":
                            case "balance inquiry":
                            case "b":
                                Console.WriteLine("Your account currently has {0:c}.", accountBalance);
                                Console.WriteLine("Would you like to go back to the main menu?: Y/N: ");
                                string userMainMenuBalance = Console.ReadLine().ToLower();
                                if (userMainMenuBalance == "y" || userMainMenuBalance == "yes")
                                {
                                    goto restartChoices;
                                }

                                else
                                {
                                    goto restartLogout;
                                }
                                break;
                            case "4":
                            case "exit":
                            case "e":
                            restartLogout:
                                Console.WriteLine("Please enter your account PIN to sign out of the ATM");
                                int pinNumber2 = Convert.ToInt32(Console.ReadLine());
                                if (pinNumber2 == 1234)
                                {
                                    Console.WriteLine("You have been successfully signed out of your account. Do not forget to remove your card");
                                }//end if
                                else
                                {
                                    Console.WriteLine("Invalid PIN number. Please try again.");
                                    goto restartLogout;

                                }//end else
                                break;
                            default:
                                Console.WriteLine("Invalid user choice. Please select from the menu above.");
                                goto restartChoices;
                                break;
                        }
                    }//end if

                    else
                    {
                        Console.WriteLine("You have entered the incorrect pin. Please try again. ");
                        goto restartPin;
                    }//end else

                }//end if

                else
                {
                    goto restart;
                restart:
                    Console.WriteLine("You have failed a login attempt. You have {0} attemps remaining.", retryCount);
                    retryCount -= 1;
                    goto start;


                }//end else
            }//end else
        }//end Main()
    }//end class
}//end namespace