#include <iostream>
#include <windows.h>
#include <fstream>
#include <string>


using namespace std;

void title();
string username,password;
string Username=username;
string Password=password;
void login()
{
string username,password;
string newusername, newpassword;
char respond;
cout << "Do you have an account? Y/Nn";
cin >> respond;
if (respond == 'Y'|| respond == 'y'){

    ifstream inFile;
    inFile.open("newuser.txt");

    if (inFile.fail()){
        cerr << "Error! x_xnPlease reopen this program." << endl;
        system("PAUSE");
        exit(1);
    }

    cout << "Please enter your username: ";
    cin >> username;
    cout << "nPlease enter your password: ";
    cin >> password;

    string vusername,vpassword;
    while(!inFile.eof()){
        inFile >> vusername >> vpassword;
        if (vusername==username && vpassword==password){
            cout << "Login Successfully!" << endl;
        }else{
        cout << "Fail to login...Please reopen this program." << endl;
        system("PAUSE");
        exit(1);
        }
    }
}
else if (respond == 'N'|| respond == 'n'){
    cout << "Please enter your desired username:";
    cin >> newusername;
    cout << "nPlease enter your desired password:";
    cin >> newpassword;

    ofstream outFile;
    outFile.open("newuser.txt");
    outFile << newusername << " " << newpassword << endl;
    outFile.close();
    cout << "n******************************************";
    cout << "nnPlease enter your username: ";
    cin >> username;
    cout << "nPlease enter your password: ";
    cin >> password;

    ifstream inFile;
    inFile.open("newuser.txt");

    if (inFile.fail()){
        cerr << "Error! x_xnPlease reopen this program." << endl;
        system("PAUSE");
        exit(1);
    }
    string vusername1,vpassword1;
    while(!inFile.eof()){
        inFile >> vusername1 >> vpassword1;
        if (vusername1==username && vpassword1==password){
            cout << "Login Successfully!" << endl;

            username += ".txt";
            ofstream createFile;
            createFile.open(username.c_str(),ios::app);
            createFile << username << "n" << "Balance: n";
        }else{
        cout << "Fail to login...Please reopen this program." << endl;
        system("PAUSE");
        exit(1);
        }
    }
}

 }

void title()
{
cout << "This is a bank system.  Enjoy! :)" << endl;
cout << "^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^nnn";
cout << "       _________________________________________n";
cout << "       | WELCOME TO YOUR PERSONAL BANK ACCOUNT!|" << endl;
cout << "        |_____________________________________|nnn";
}

void functions()
{
int choice;
cout << "      ***************************" << endl;
cout << "        1. Account Information" << endl;
cout << "        2. Manage Your Money" << endl;
cout << "        3. Investments" << endl;
cout << "        4. Loans" << endl;
cout << "        5. Delete Account" << endl;
cout << "      ***************************" << endl;
cout << "       Please enter your choice: ";
cin >> choice;

switch(choice)
{
case 1:
    ifstream inFile;
    string name;
    cout << "Please enter your username: ";
   // getline(cin,name);
    //name += ".txt";
    //inFile.open(name.c_str());

    while(getline(cin,name)){
        name += ".txt";
        inFile.open(name.c_str());
    }

    if(inFile.fail()){
        cerr << "Error Opening File" << endl;
        system("PAUSE");
        exit(1);
    }
    string info;
    int line = 0;

    while(!inFile.eof()){
        inFile >> info;
        line++;
    }

    break;

}
}

int main()
{
login();
title();
functions();
system("PAUSE");
return 0;
}