#include<iostream>
#include<fstream>
#include<conio.h>
using namespace std;

struct user
{
	string name;
	string birth;
	string pass;
};

int loginMenu();
int loginPage();
void activeMenu();
void checkMenu(int x);
void registerOption();
bool checkLogin(string username,string password);

int main()
{
	checkMenu(loginMenu());
}

int loginMenu()
{
	system("cls");
	int option;
	cout<<"(1) Login"<<endl
	    <<"(2) Register"<<endl
	    <<"(3) Exit"<<endl
	    <<"\nOption: ";
	cin >>option;

	return option;
}

void checkMenu(int x)
{
	if(x == 1)
	{
		loginPage();
	}
	else if(x == 2)
		registerOption();
	else if(x == 3)
	{
		exit(0);
	}
	else
	{
		cout<<"Invalid Option";
		system("pause");
		checkMenu(loginMenu());
	}
}

void registerOption()
{
	system("cls");

	ofstream databaseName;
	databaseName.open("databaseName.dat",std::ios_base::app);
	ofstream databaseBirth;
	databaseBirth.open("databaseBirth.dat",std::ios_base::app);
	ofstream databasePass;
	databasePass.open("databasePass.dat",std::ios_base::app);

	user User;
	cout<<"Username: ";
	cin.ignore();
	getline(cin,User.name);
	databaseName<<User.name<<endl;
	cout<<"Birthday: ";
	getline(cin,User.birth);
	databaseBirth<<User.birth<<endl;
	cout<<"Password: ";
	getline(cin,User.pass);
	databasePass<<User.pass<<endl;

	databaseName.close();
	databaseBirth.close();
	databasePass.close();

	cout<<User.name<<" "<<User.birth<<"\nRecord Saved"<<endl;
	system("pause");
	checkMenu(loginMenu());
}

int loginPage()
{
	system("cls");
	char option;
	string username, password;
	cout<<"Enter Username: ";
	cin.ignore();
	getline(cin,username);
	cout<<"Password: ";
	char PIN[20];


	int i = 0;
	while (1)
	{
		PIN[i] = _getch(); //getch() - get character without echo
		if (PIN[i] == 13)  // enter key =13
		{
			PIN[i] = '\0';  //='terminating the C-String variable
			break;
		}
		else if (PIN[i] == 8 && i > 0)
		{
			cout << "\b \b";
			i--;
		}

		else if (PIN[i] == 8) // use this code when backspace issue
		{
			cout << " \b";
		}
		else
		{
			cout << "*";
			i++;
		}       //13 is ASCII value for Enter
	}

	if (checkLogin(username, PIN))
		activeMenu();
	else
	{
		do
		{
			system("cls");
			cout<<"Invalid Username or Password"<<endl
				<<"Try again? [y/n]: ";
			cin >>option;
			if(option == 'y'||option == 'Y')
				loginPage();
			else if(option == 'n'||option == 'N')
				checkMenu(loginMenu());
			else
			{
				cout<<"Invalid option"<<endl;
				system("pause");
			}
		}while(option != 'n' || option != 'N' || option != 'y' || option != 'Y');
	}
}

bool checkLogin(string username,string password)
{
	ifstream databaseName;
	databaseName.open("databaseName.dat");
	ifstream databasePass;
	databasePass.open("databasePass.dat");

	string line, pass;
	int value = 0;
	while(getline(databaseName,line) && getline(databasePass,pass))
	{
		if(line == username && pass == password)
			value = 1;
	}
	if(value == 1)
		return true;
	else
		return false;

	databaseName.close();
	databasePass.close();
}

void activeMenu()
{
	system("cls");
	int option;
	cout<<"(1) Profile"<<endl
		<<"(2) News Feed"<<endl
		<<"(3) Post"<<endl
		<<"(4) Search"<<endl
		<<"(5) Special"<<endl
		<<"(6) Logout"<<endl
		<<"\nOption: ";
	cin >>option;

	if(option == 1)
		cout<<"Hello";
	else if(option == 2)
		cout<<"Hello";
	else if(option == 3)
		cout<<"Hello";
	else if(option == 4)
		cout<<"Hello";
	else if(option == 5)
		cout<<"Hello";
	else if(option == 6)
		checkMenu(loginMenu());
	else
		cout<<"Hello";
}