// eastsurreygym.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
#include "stdlib.h"
#include <string>
#include <iomanip>
#include <conio.h>
#include <fstream>
#include <istream>

using namespace std;


void runUsername();
void runPassword();
void menuSelections();
void helpMenu();
void customerDetails();
void customerProfile();
void calculations();
void calculations2();
void MainExit();
void HelpExit();
void option1();
void option2();
void kilo();
double enterMeasurements(double&H);
double enterMeasurements2(double&W);
double enterMeasurements3(double&A);
double weight, height, age, bmi, bmr, kiloC, targetbmi;
string name, address, email, gymid, tele, bmiCat;

int main()
{
	runUsername();
	return 0;
}

void runUsername()
{
	int correct_username = 1990;
	int username = 0;
	int attempt = 1;

	while (attempt <= 3) {
		cout << "Enter your username: ";
		cin >> username;
		attempt = attempt + 1;

		if (cin.fail())
		{
			cin.clear();
			cin.ignore(INT_MAX, '\n');
			cout << "Input Error. Numeric values only" << endl;
			runUsername();
		}
		else if (username != correct_username) {
			cout << "Incorrect password combination. Please try again." << "\n";
			runUsername();
		}
		else
		{
			break;
		}
	}
	if (attempt >= 3)
	{
		if (username == correct_username)
		{
			cout << "Access granted." << endl;
			system("Pause");
			runPassword();
		}
		else
		{
			exit(0);
		}
	}
	else
	{
		cout << "Access granted." << endl;
		system("Pause");
		runPassword();
	}
}

void runPassword()
{
	int correct_password = 1998;
	int password = 0;
	int attempt = 1;

	while (attempt <= 3) {
		cout << "Enter your password: ";
		cin >> password;
		attempt = attempt + 1;

		if (cin.fail())
		{
			cin.clear();
			cin.ignore(INT_MAX, '\n');
			cout << "Input Error. Numeric values only" << endl;
			runPassword();
		}
		else if (password != correct_password) {
			cout << "Incorrect password combination. Please try again." << "\n";
			//runPassword();
		}
		else
		{
			break;
		}
	}
	if (attempt >= 3)
	{
		if (password == correct_password)
		{
			cout << "Access granted." << endl;
			system("Pause");
			menuSelections();
		}
		else
		{
			exit(0);
		}
	}
	else
	{
		cout << "Access granted." << endl;
		system("Pause");
		menuSelections();
	}
}

void menuSelections()
{
	int MainMenuOptions;
	//do-while loop starts here.that display menu again and again until user select to exit program
	do
	{
		cout << "\n" << "|  Menu Items                 |";
		cout << "\n" << "|                             |";
		cout << "\n" << "|  1. Help Menu               |";
		cout << "\n" << "|  2. Customer Details        |";
		cout << "\n" << "|  3. Customer Profile        |";
		cout << "\n" << "|  4. Calculations            |";
		cout << "\n" << "|                             |";
		cout << "\n" << "|  0. Exit program            |";
		cout << "\n" << "|                             |" << "\n";

		for (int i = 0; i < 30; ++i)
		{
			cout << "-";
		}
		//Prompting user to enter an option according to menu
		cout << "\n" << "Please select an option : ";
		cin >> MainMenuOptions;  // taking option value as input and saving in variable "option"
		if (cin.fail())
		{
			cin.clear();
			cin.ignore(INT_MAX, '\n');
			cout << "Input Error. Numeric values only" << endl;
			system("pause");
			system("cls");
			menuSelections();
		}
		else
		{
			switch (MainMenuOptions)
			{
			case 1:
				helpMenu();
				break;
			case 2:
				customerDetails();
				break;
			case 3:
				customerProfile();
				break;
			case 4:
				calculations();
				break;
			case 0:
				break;
			default:
				cout << "\n" << "Invalid Option entered" << "\n";
				system("pause");
				system("cls");
				menuSelections();
				break;
			}
		}
	} while (MainMenuOptions != 1 && MainMenuOptions != 2 && MainMenuOptions != 3 && MainMenuOptions != 0);
}

void helpMenu()
{
	int helpMenu;

	do
	{
		system("cls");
		cout << "\n" << "  Help Menu Items                      ";
		cout << "\n" << " 							       ";
		cout << "\n" << "  1. How to calculate BMR?       ";
		cout << "\n" << "  2. How to calculate BMI?  ";
		cout << "\n" << "  3. How to calculate kilocalories? ";
		cout << "\n" << "  4. How to calculate calories?        ";
		cout << "\n" << "  5. Why customer details are needed?        ";
		cout << "\n" << "  6. Why height is measured in Centimeters?        ";
		cout << "\n" << "                                  " << endl;
		cout << "\n" << "  0. Exit";

		for (int i = 0; i < 30; ++i)
		{
			cout << "-";
		}

		cout << "\n" << "Please select an option :";
		cin >> helpMenu;
		if (cin.fail())
		{
			cin.clear();

			cout << "Input Error. Numeric values only" << endl;
			system("pause");
			system("cls");
			menuSelections();
		}
		else
		{
			switch (helpMenu)
			{
			case 1:
				system("cls");
				cout << "\n\n" << "To calculate BMR you have to use this formula BMR = 88.362 + (13.397 x weight in kg) + (4.799 x height in cm)–(5.677 x age in years)" << endl;
				system("pause");
				HelpExit();
				break;
			case 2:
				system("cls");
				cout << "\n\n" << "To calculate BMI you have to use this formula BMI = Divide Weight (KG) by Height (M) Divide by your Height (M) again" << endl;
				system("pause");
				HelpExit();
				break;
			case 3:
				system("cls");
				cout << "\n\n" << "To calculate kilocalories you have to use this formula" << endl;
				system("pause");
				HelpExit();
			case 4:
				system("cls");
				cout << "\n\n" << "To calculate calories you have to use this formula" << endl;
				system("pause");
				HelpExit();
			case 5:
				system("cls");
				cout << "\n\n" << "To get a better understanding of the individual" << endl;
				system("pause");
				HelpExit();
			case 6:
				system("cls");
				cout << "\n\n" << "It is much more specific than doing it in Meters" << endl;
				system("pause");
				HelpExit();
			case 0:
				system("cls");
				HelpExit();
				break;
			default:
				system("cls");
				cout << "\n" << "Invalid Option entered" << "\n";
				system("pause");
				system("cls");
				menuSelections();
				break;
			}
		}
	} while (helpMenu != 1 && helpMenu != 2 && helpMenu != 3 && helpMenu != 0);
}

void customerDetails() {
	for (int i = 0; i < 32; ++i) { cout << "-"; }
	cout << "\n" << "Customer Details" << endl;
	for (int i = 0; i < 32; ++i) { cout << "-"; }
	cin.ignore();
	cout << "\n" << "Please enter your gym id: ";
	getline(cin, gymid);
	cout << "\n" << "Please enter your name: ";
	getline(cin, name);
	cout << "\n" << "Please enter your phone number: ";
	getline(cin, tele);
	cout << "\n" << "Please enter your address: ";
	getline(cin, address);


	//cout << gymid + name + tele + email + address;

	system("pause");
	system("cls");
	menuSelections();
}

void customerProfile() {
	system("cls");
	for (int i = 0; i < 32; ++i) { cout << "-"; }
	cout << "\n" << "Gym ID: " << gymid;
	cout << "\n" << "Name: " << name;
	cout << "\n" << "Telephone Number: " << tele;
	cout << "\n" << "Email Address: " << email;
	cout << "\n" << "Address: " << address;
	cout << "\n" << "BMI: " << bmi;
	cout << "\n" << "BMR: " << bmr;
	cout << "\n" << "Target BMI: " << targetbmi;
	cout << "\n" << "";
	for (int i = 0; i < 32; ++i) { cout << "-"; }
	cout << "\n" << "";

	system("pause");
	system("cls");
	menuSelections();
}

void MainExit() {
	char choice;
	cout << "\n\n\n" << "Do you want to go back to the main menu (y or n):";
	cin >> choice;
	if (choice == 'Y' || choice == 'y') {
		system("cls");
		menuSelections();
	}
	else if (choice == 'N' || choice == 'n') {
		exit(0);
	}
	else {
		cout << "\n" << "Invalid letter.Only accept Y or N";
		exit(0);
	}
}
void HelpExit() {
	char choice;
	cout << "\n\n\n" << "Do you want to go back to the help menu (y or n):";
	cin >> choice;
	if (choice == 'Y' || choice == 'y') {
		system("cls");
		helpMenu();
	}
	else if (choice == 'N' || choice == 'n') {
		MainExit();
	}
	else {
		cout << "\n" << "Invalid letter.Only accept Y or N";
		exit(0);
	}
}
double enterMeasurements(double&H) {
	system("cls");
	cout << "\n" << "Please enter your height between 120 - 210 (in cm): ";
	cin >> H;
	if (cin.fail())
	{
		cin.clear();
		cin.ignore(INT_MAX, '\n');
		cout << "Input Error. Numeric values only" << endl;
		system("pause");
		system("cls");
		enterMeasurements(H);
	}
	else if (H < 120 || H>210)
	{
		cout << "Number has to be between 120 - 210cm" << endl;
		system("pause");
		system("cls");
		enterMeasurements(H);
	}
	else
	{
		return H;
	}
	return H;



	return H;
}
double enterMeasurements2(double&W) {
	system("cls");
	cout << "\n" << "Please enter your weight between 30 - 250 (in kg): ";
	cin >> W;
	if (cin.fail())
	{
		cin.clear();
		cin.ignore(INT_MAX, '\n');
		cout << "Input Error. Numeric values only" << endl;
		system("pause");
		system("cls");
		enterMeasurements2(W);
	}
	else if (W < 30 || W>250)
	{
		cout << "Number has to be between 30 - 250kg" << endl;
		system("pause");
		system("cls");
		enterMeasurements2(W);
	}
	else
	{
		return W;
	}
	return W;
}
double enterMeasurements3(double&A) {
	system("cls");
	cout << "\n" << "Please enter your age between 14 - 100: ";
	cin >> A;
	if (cin.fail())
	{
		cin.clear();
		cin.ignore(INT_MAX, '\n');
		cout << "Input Error. Numeric values only" << endl;
		system("pause");
		system("cls");
		enterMeasurements3(A);
	}
	else if (A < 14 || A>100)
	{
		cout << "Age has to be between 14 - 100" << endl;
		system("pause");
		system("cls");
		enterMeasurements3(A);
	}
	else
	{
		return A;
	}
	return A;
}


void calculations() {
	double H, W, A;
	enterMeasurements(H);
	enterMeasurements2(W);
	enterMeasurements3(A);
	weight = W;
	height = H;
	age = A;
	bmi = W / (H / 100 * H / 100);

	if (bmi < 18.5) {
		bmiCat = "Underweight";
		targetbmi = bmi + 2;
	}
	else if (bmi > 18.5 && bmi < 24.9) {
		bmiCat = "Normal weight";
		targetbmi = 22;
	}
	else if (bmi > 25 && bmi < 29.9) {
		bmiCat = "Overweight";
		targetbmi = bmi - 1;
	}
	else if (bmi > 30) {
		bmiCat = "Obese";
		targetbmi = bmi - 2;
	}
	cout << "\n" << "Your BMI is " << bmi << "kg/m" << char(253);
	cout << "\n" << "Your BMI catagory is " << bmiCat;
	cout << "\n" << "Your target BMI is " << targetbmi << "kg/m" << char(253) << endl;
	system("pause");
	calculations2();
}



void calculations2() {
	int calc2options;
	do {
		for (int i = 0; i < 30; i++) { cout << "-"; }
		cout << "\n" << "Are you male or female?";
		cout << "\n" << "1. Male";
		cout << "\n" << "2. Female";
		cout << "\n" << "Please select an option: ";
		cin >> calc2options;
		if (cin.fail()) {
			cin.clear();
			cout << "Input Error, Numeric values only." << endl;
			system("pause");
			system("cls");
			menuSelections();
		}
		else {
			switch (calc2options) {
			case 1:
				option1();
				break;
			case 2:
				option2();
				break;
			case 0:
				exit(0);
				break;
			default:
				cout << "\n" << "Invalid Option Entered" << "\n";
				system("pause");
				system("cls");
				menuSelections();
				break;
			}
		}
	} while (calc2options != 1 && calc2options != 2 && calc2options != 0);
}

void option1() {
	bmr = 88.362 + (13.397 * weight) + (4.799 * height) - (5.677 * age);
	cout << "\n" << "Your BMR is: " << bmr << endl;
	system("pause");
	kilo();
}

void option2() {
	bmr = 447.593 + (9.247 * weight) + (3.098 * height) - (4.330 * age);
	cout << "\n" << "Your BMR is: " << bmr << endl;
	system("pause");
	kilo();
}

void kilo() {
	int kiloOptions;
	do {
		cout << "\n" << "How much exercise do you do?";
		cout << "\n" << "1. Very little to no exercise";
		cout << "\n" << "2. Little exercise (1-2) days a week";
		cout << "\n" << "3. Medium exercise (3-5) days a week";
		cout << "\n" << "4. High exercise (4-6) days a week";
		cout << "\n" << "5. Intense exercise (7) days a week 2 times a day";
		cout << "\n" << "Please choose an option: ";
		cin >> kiloOptions;
		if (cin.fail()) {
			cin.clear();
			cout << "Input Error, Numeric values only. " << endl;
			system("pause");
			system("cls");
			menuSelections();
		}
		else {
			switch (kiloOptions) {
			case 1:
				kiloC = bmr * 1.2;
				cout << "\n" << "Returning to menu" << endl;
				menuSelections();
				break;
			case 2:
				kiloC = bmr * 1.375;
				cout << "\n" << "Returning to menu" << endl;
				menuSelections();
				break;
			case 3:
				kiloC = bmr * 1.55;
				cout << "\n" << "Returning to menu" << endl;
				menuSelections();
				break;
			case 4:
				kiloC = bmr * 1.725;
				cout << "\n" << "Returning to menu" << endl;
				menuSelections();
				break;
			case 5:
				kiloC = bmr * 1.9;
				cout << "\n" << "Returning to menu" << endl;
				menuSelections();
				break;
			case 0:
				exit(0);
				break;
			default:
				cout << "\n" << "Incorrect option entered" << "\n";
				system("pause");
				system("cls");
				menuSelections();
				break;
			}
		}
	} while (kiloOptions != 1 && kiloOptions != 2 && kiloOptions != 3 && kiloOptions != 4 && kiloOptions != 5 && kiloOptions != 0);
}