#include <iostream>
#include <string>
#include <fstream>
using namespace std;

ifstream FIn_Login;
ofstream FOut_Login;

ifstream FIn_Password;
ofstream FOut_Password;

enum Check
{
	Login = 1,
	Password = 2
};

class Person
{
public:
	void Login();
	void Register();
	bool Check(string word, int a);

	int unitForLogin = 0;
	int unitForPassWord = 0;
private:
	string login;
	string firstPassword;
	string secondPassword;
};

void Menu();

int main()
{
	Menu();

	FIn_Login.close();
	FOut_Login.close();
	FIn_Password.close();
	FOut_Password.close();
}

void Person::Login()
{
	cout << "Insert Login :";
	cin >> login;

	if (Check(login, Check::Login))
	{
		cout << "Insert Password :";
		cin >> firstPassword;
		if (Check(firstPassword, Check::Password))
		{
				cout << "Correct.";
		}
		else
		{
			cout << "Incorrect.";
		}
	}
	else
	{
		cout << "Wrong login.";
	}
}
void Person::Register()
{
	cout << "Insert Login :";
	cin >> login;
	cout << "Insert Password :";
	cin >> firstPassword;
	cout << "Insert Password again :";
	cin >> secondPassword;

	if (Check(login, Check::Login))
	{
		cout << "Login is Taken" << endl;
		Register();
	}
	else if (!Check(login, Check::Login))
	{
		if (firstPassword == secondPassword)
		{
			cout << endl << "Successful Register.";
			FOut_Login <<  login << endl;
			FOut_Password << firstPassword << endl;
		}
		else
		{
			cout << "Password is not the same.";
		}
	}
}
void Menu()
{
	FIn_Login.open("Login.txt", ios::app);
	FIn_Password.open("Password.txt", ios::app);

	FOut_Login.open("Login.txt", ios::app);
	FOut_Password.open("Password.txt", ios::app);

	if (FOut_Login.is_open() && FOut_Password.is_open())
	{
		cout << "File is Open" << endl;
	}
	else
	{
		cout << "File is Not Open" << endl;
	}

	Person ObjPerson;
	int i;
	cout << "Choice Options :" << endl;
	cout << "1. Login." << endl;
	cout << "2. Register." << endl;
	cin >> i;
	system("CLS");
	if (i == 1)
	{
		ObjPerson.Login();
	}
	else if (i == 2)
	{
		ObjPerson.Register();
	}
	else
	{
		cout << "ERROR!" << endl;
	}
}
bool Person::Check(string word, int a)
{
	string msg = "";
	bool checking = false;
	if (Check::Login)
	{
		while (!FIn_Login.eof())
		{
			string msg = "";
			FIn_Login >> msg;
			if (msg == word)
			{
				checking = true;
				break;
			}
			else
			{
				checking = false;
			}
		}
	}
	else if (Check::Password)
	{
		while (!FIn_Password.eof())
		{
			string msg = "";
			FIn_Password >> msg;
			if (msg == word)
			{
				checking = true;
				break;
			}
			else
			{
				checking = false;
			}
		}
	}
	return checking;
}