import java.io.*;

public class LoginBot
{
    public LoginBot()
    {
    }
    public LoginBot(String a, String b)
    {
        username = a;
        password = b;
        loggedIn = false;
    }
    public LoginBot(String a, String b, File f)
    {
        username = a;
        password = b;
        file = f;
        loggedIn = false;
    }

    public void login()
    {
        String path = "users/" + username + ".txt";

        if (!file.exists())
        {
            loggedIn = false;
            System.out.println("\nError: invalid username/password.");
        }
        else
        {
            try
            {
                fstream = new FileInputStream(path);
                dstream = new DataInputStream(fstream);
                br = new BufferedReader(new InputStreamReader(dstream));
                String inputLine;

                while ((inputLine = br.readLine()) != null)
                {
                    if (file.exists() && inputLine.equals(password))
                    {
                        loggedIn = true;
                        System.out.println("\nThank you for logging in.");
                    }
                    else
                    {
                        loggedIn = false;
                        System.out.println("\nError: invalid username/password.");
                    }
                }
            }
            catch (IOException e)
            {
                System.out.println("> There was an error while logging in.");
            }
        }
    }

    public void createAccount()
    {
        System.out.println("\n> Creating account...");
        String path = "users/" + username + ".txt";

        try
        {
            bw = new BufferedWriter(new FileWriter(path, true));
            bw.write(password);
            bw.close();
            file = new File(path);
            System.out.println("> Done!");
        }
        catch (IOException e)
        {
            System.out.println("> There was an error in creating your account.");
        }
    }

    public boolean isLoggedIn()
    {
        return loggedIn;
    }
    public void setParameters(String a, String b, File f)
    {
        username = a;
        password = b;
        file = f;
    }
    public void setUsername(String a)
    {
        username = a;
    }
    public void setPassword(String b)
    {
        password = b;
    }
    public void setFile(File f)
    {
        file = f;
    }

    private String username;
    private String password;
    private File file;

    private boolean loggedIn;

    private FileInputStream fstream;
    private DataInputStream dstream;
        private BufferedReader br;
    private BufferedWriter bw;
}