using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;

namespace ConsoleApplication1 //Change this text to whater ur project is called
{
    class Program
    {
        static void Main(string[] args)
        {
            string Firstname, Lastname, age, Username, password,Start; //creates the different variables
            int next2;
            bool next1;
            next1 = false;
            next2 = 0;
            do
            {
                Console.Clear();
                Console.WriteLine("Would you like to 'create' an account or 'login'");
                Start = Console.ReadLine();
                if (Start == "create")
                {
                    next1 = true;
                    next2 = 1;
                }
                if (Start == "login")
                {
                    next1 = true;
                    next2 = 2;
                }
                if (Start == "Create")
                {
                    next1 = true;
                    next2 = 1;
                }
                if (Start == "Login")
                {
                    next1 = true;
                    next2 = 2;
                }
            } while (next1 == false);

            if (next2 == 1) //Account Creation
            {
                Console.Clear();
                Console.WriteLine("Enter Your firstname"); //Firstname
                Firstname = Console.ReadLine();
                Console.Clear();

                Console.WriteLine("Enter Your Lastname"); //Second name
                Lastname = Console.ReadLine();
                Console.Clear();

                Console.WriteLine("Enter Your age"); //Age
                age = Console.ReadLine();
                Console.Clear();

                Console.WriteLine("Enter Your password"); //Password
                password = Console.ReadLine();
                Console.Clear();

                Username = Firstname + age; //Creates UserName
                Console.WriteLine("Your Username is: " + Username);
                Console.WriteLine("Your password is: " + password);
                Console.ReadLine();

                try //This Part Creates a textfile for the different things
                {
                    StreamWriter sw = new StreamWriter(Username + ".txt"); //One for the password
                    sw.WriteLine(password);
                    sw.Close();
                }
                catch (Exception e)
                {
                    Console.WriteLine("Exception: " + e.Message);
                }
                finally
                {
                    Console.WriteLine("Executing finally block.");
                }
                Console.Clear();

                try//Text file for first name
                {
                    StreamWriter sw = new StreamWriter(Username + "FirstName.txt");
                    sw.WriteLine(Firstname);
                    sw.Close();
                }
                catch (Exception e)
                {
                    Console.WriteLine("Eception: " + e.Message);
                }
                finally
                {
                    Console.WriteLine("Executing");
                }

                try//Text file for second name
                {
                    StreamWriter sw = new StreamWriter(Username + "SecondName.txt");
                    sw.WriteLine(Lastname);
                    sw.Close();
                }
                catch (Exception e)
                {
                    Console.WriteLine("Eception: " + e.Message);
                }
                finally
                {
                    Console.WriteLine("Executing");
                }

                try//Text file for first name
                {
                    StreamWriter sw = new StreamWriter(Username + "Age.txt");
                    sw.WriteLine(age);
                    sw.Close();
                }
                catch (Exception e)
                {
                    Console.WriteLine("Eception: " + e.Message);
                }
                finally
                {
                    Console.WriteLine("Executing");
                }

                next2 = 2;
            }//End of creating account

            if (next2 == 2)
            {

                string inputusername, Filename;
                bool verification;
                verification = false;
                do
                {
                    Console.Clear();
                    Console.WriteLine("Enter Your username");
                    inputusername = Console.ReadLine();
                    Filename = inputusername + ".txt";
                    if (System.IO.File.Exists(Filename) == true);
                    {
                        Console.Clear();
                        verification = true;

                    }
                    if (System.IO.File.Exists(Filename) == false);
                        {
                        Console.Clear();
                            Console.WriteLine("Incorrect Username:      "  + Filename);
                        Console.ReadLine();

                    }
                } while (verification == true);
                Console.WriteLine("Congrats");
            }

        }
    }
}