package shawnim;

import java.awt.*;
import java.io.*;
import java.awt.event.*;
import java.util.Scanner;
import javax.swing.*;

public class authSys extends JFrame {


    //Variables
    private String username;
    private String password;
    private ObjectOutputStream output;
    private ObjectInputStream input;
    private JTextField textField;
    private JTextArea textArea;

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }


    //constructor
    public authSys(){
        super("ShawnIM(SEVER)");
        textField = new JTextField();
        textField.setEditable(true);
        add(textField, BorderLayout.SOUTH);
        textArea = new JTextArea();
        textArea.setEditable(false);
        add(new JScrollPane(textArea));
        setSize(400,300);
        setVisible(true);
        textField.addActionListener(
            new ActionListener(){
                public void actionPerformed(ActionEvent event){
                    textArea.setText("");
                    textArea.append(textField.getText());

                }
            }
        );

    }

    //Welcome messages and selection for logging in and creating new user
    public void userMain(){
        showMessage("Welcome to ShawnIM!\n");
        showMessage("Please enter LOGIN to login in to an existing user.\n");
        showMessage("Please enter NEWUSER to create a new user.\n");
        showMessage("usernames are CASE SENSITIVE.\n");

        setUsername(textField.getText());

        if(username.equals("login") || username.equals("LOGIN")){
            checkUsername();
        }else if(username.equals("NEWUSER") || username.equals("newuser")){
            createUserFile();
        }else{
            showMessage("\nERROR:UNRECONIZED COMMAND!\n");
            //userMain();
        }
    }

    //check username entered if user selects loggin and matches file to user
    private void checkUsername(){
        Scanner s = new Scanner(System.in);
        showMessage("Enter Your Username: ");
        username = s.next();
        File folder = new File("userbase");
        File[] listOfFiles = folder.listFiles();
        for(int i = 0; i < listOfFiles.length; i++){
            String filename = listOfFiles[i].getName();
            if(filename.startsWith(username+".txt")){
                loginPassword();
            }else{
                showMessage("User does not exist!");
                showMessage("Enter RETURN to try again.");
                showMessage("Enter NEWUSER to create a new user.");
                username = s.next();
                switch(username){
                    case "RETURN": checkUsername();
                    break;
                    case "return": checkUsername();
                    break;
                    case "NEWUSER": createUserFile();
                    break;
                    case "newuser": createUserFile();
                    break;
                    default:
                        showMessage("ERROR:UNRECONIZED COMMAND!");
                        userMain();
                }
            }
        }
    }

    //password login method
    private void loginPassword(){//might want to extend functionality here(ie retun a value or smtng)
        try{
            Scanner s = new Scanner(System.in);
            File user = new File(username+".txt");
            FileReader fr = new FileReader(user);
            BufferedReader br  = new BufferedReader(fr);

            password=br.readLine();

            //can add additonal lines to read and store 'intrests' and save them in a global var

            fr.close();
            br.close();

            showMessage("Enter Password: ");
            String inpUser=s.nextLine();
            if(inpUser.equals(password)){
                showMessage("Logged in...");
                showMessage("Welcome!");
                System.exit(0);//program continues here............
            }else{
                showMessage("Password is Incorrect");
                loginPassword();
            }
        }catch(IOException e){
             showMessage("ERROR - LOGINPASSOWRD");
             System.exit(0);
        }
    }

    //creates user profile and check if username has ben used
    private void createUserFile(){
        try{
            Scanner s = new Scanner(System.in);

            showMessage("Enter your desired username: ");
            String x = s.next();

            File file = new File("userbase/"+x+".txt");

            if(file.createNewFile()){
                showMessage("User sucsessfully created!");
                createProfile();
            }else{
                showMessage("User alredy Exists! Try another username.");
                createUserFile();
            }
        }catch(IOException e){
            showMessage("ERROR - CREATEUSERFILE");
        }
    }

    //password and misc part of user profile
    private void createProfile(){
        try{
            File file = new File(username+".txt");
            PrintWriter output = new PrintWriter(file);
            Scanner s = new Scanner(System.in);
            showMessage("Enter desired password: ");
            password = s.next();

            //enter intrests here------------------

            output.print(password);
            output.close();
        }catch(IOException e){
            showMessage("ERROR - CREATEUSERPROFILE");
        }
    }

    private void showMessage(final String text){
        SwingUtilities.invokeLater(
            new Runnable(){
                public void run(){
                    textArea.append(text);
                }
            }
        );
    }

    private void getMessage(){

    }
    private void sendText(String text) throws IOException{
        try{
            text = (String) input.readObject();
            showMessage("\n" + text);
        }catch(ClassNotFoundException classNotFoundException){
                showMessage("\n(Error - unredable string type...)");
        }
    }

}