#include <iostream>
#include <stdlib.h>
#include <string>

using namespace std;

// function prototypes
void printIntroMenu();
void printMainMenu();
void start();
void login();
void createAccount();
void depositMoney();
void withdrawMoney();
void requestBalance();

// global variable (use this variable to store the user’s menu selection)
int menuInput, input;
string user = "ADMIN", pass = "admin", useri, passi;
int login_access = 0;
double money=0, amount;

int main() {
    start();
}

void printIntroMenu() {//mainmenu
    cout << "Please select an option from the menu below:\n\n" << "1 -> Login\n" << "2 -> Create New Account\n" << "3 -> Quit\n\n" << ">";
    cin >> menuInput;
}

void printMainMenu() {
    cout << "1 -> Deposit Money" << endl << "2 -> Withdraw Money" << endl << "3 -> Request Balance" << endl << "4 -> Quit" << endl << endl << ">" << endl;
    cin >> input;
    switch (input) {//switch statment to trigger additional functions
            case 1://case is used like an if statement here to provide conditions. If the input = 1 , deposit money function will be called
                depositMoney();
                break;
            case 2:
                withdrawMoney();
                break;
            case 3:
                requestBalance();
                break;
            case 4:
                cout << "Goodbye, please come again" << endl;
        }
}

void start() {
        printIntroMenu();
        switch (menuInput) {
            case 1:
                login();
                break;
            case 2:
                createAccount();
                start();
                break;
            case 3:
                cout << "Goodbye!" << endl;
        }
}

void login() {
    cout << "Username: ";
    cin >> useri;
    cout << "Password: ";
    cin >> passi;


    if (user == useri && pass == passi) {
        cout << "Access Granted\n";
        printMainMenu();
        login_access++;
    } else {
        cout << "ACCESS DENIED";
    }
}

void createAccount() {
    cout << "Input a new Username: ";
    cin >> user;

    cout << "Input a new Password: ";
    cin >> pass;
    printIntroMenu();
}

void depositMoney() {
    cout << "How much do you want to deposit?";
    cin >> amount;
    money = amount + money;//simple counter to keep track of money
    cout << "You deposited " << amount << " into your bank account." << endl;
    printMainMenu();
}

void withdrawMoney() {
    cout << "How much do you want to withdraw?";
    cin >> amount;
    money = money - amount; //subtracts from the counter
    cout << "You withdrew " << amount << " from your bank account." << endl;
    printMainMenu();
}

void requestBalance() {
    cout << "You have " << amount << " in your account." << endl;
    printMainMenu(); //brings users back to the main menu
}