package com.taskperf6;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Scanner;

public class Login_Register {

    Scanner input = new Scanner(System.in);
    ArrayList<String> datafile = new ArrayList<String>();

    public void dataRetrieve() {
        try {
            Scanner retrieve = new Scanner(new File("C:\\Users\\Fujitsu\\Documents\\Java Files\\JAVA OOP\\src\\com\\taskperf6\\records.txt"));
            while(retrieve.hasNext()){
                datafile.add(retrieve.next());
            }
            retrieve.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    }

    //This is the method for register
    public void resgister() {
        dataRetrieve();
        try {
            //Getting input from the user
            System.out.print("Enter your username: ");
            String username = input.next();
            System.out.print("Enter your password: ");
            String password =  input.next();
            String data = username + "," + password;
            datafile.add(data);
            input.close();
            PrintWriter writer = new PrintWriter(new FileWriter("C:\\Users\\Fujitsu\\Documents\\Java Files\\JAVA OOP\\src\\com\\taskperf6\\records.txt"));

            for(String passingData:datafile) {
                writer.println(passingData);
            }
            writer.close();

        } catch (IOException e) {
            e.printStackTrace();
        }

    }
    //This is the method for register
    public void login() {
        Boolean found = false;
        String tempUsername = "";
        String tempPassword = "";
        try {
            Scanner reader = new Scanner(new File("C:\\Users\\Fujitsu\\Documents\\Java Files\\JAVA OOP\\src\\com\\taskperf6\\records.txt"));
            System.out.println("Login\n");

            //reader.useDelimiter(",\n");
            while(reader.hasNext()) {
                System.out.print("Username: ");
                String username = input.nextLine();
                System.out.print("Password: ");
                String password = input.nextLine();
                reader.useDelimiter(",");
                tempUsername = reader.nextLine();
                tempPassword = reader.nextLine();
                if(tempUsername.trim().equals(username.trim()) && tempPassword.trim().equals(password.trim())) {
                    found = true;
                    System.out.println("Successfully logged in");
                    System.out.println("Hello " + username + " Welcome.");
                    break;
                } else {
                    System.out.println("Incorrect username or password.");
                }
//              System.out.println(tempUsername.toString());
//              System.out.println(tempPassword.toString());
            }
            input.close();
            reader.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        Login_Register lr = new Login_Register();
        System.out.println("[1] - Register\n[2] - Login\nEnter your choice: ");
        int choice = input.nextInt();

        switch(choice){
            case 1:
                lr.resgister();
                break;
            case 2:
                lr.login();
                break;
            default:
            System.out.println("Invalid input!");
        }
    }
}