package beans;

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;

import domein.User;

public class LoginBean {
	String username = "";
	String password = "";

	String lastLogin = "";
	String errormessage = "";

	String path = "C:/Users/Erik Blanken/Documents/School/HU/Jaar 2/Blok 4/Gedistribueerde Softwaresystemen/GDSO Works/Opdracht2_3/src/beans/users.txt";
	ArrayList<User> users = new ArrayList<User>();

	public void fillUserArray(){
		try{
			users.clear();

			FileInputStream fis = new FileInputStream(path);
			DataInputStream in = new DataInputStream(fis);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));

			String strLine;
			while((strLine = br.readLine()) != null){

				User u;

				String[] user = strLine.split("::");
				String uName = user[0];
				String uPass = user[1];
				if(user.length > 2){
					DateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm");
					String uLastLogin = user[2];
					Date dateLastLogin = df.parse(uLastLogin);
					u = new User(uName, uPass, dateLastLogin);
				}
				else{
					u = new User(uName, uPass);
				}
				users.add(u);
			}

		}
		catch(Exception e){
			System.out.println(e.getMessage());
		}
	}

	public boolean checkUser(String uname, String pword) {

		fillUserArray();

		for(User u : users){
			if(u.getUsername().equals(uname) && u.getPassword().equals(pword)){
				this.password = u.getPassword();
				this.username = u.getUsername();
				if(u.getLastLogin() != null){this.lastLogin = "Laatste keer ingelogd: " + u.getLastLogin().toString();}
				else{this.lastLogin = "Dit is de eerste keer dat u ingelogd bent";}

				u.setLastLogin(new Date());
				this.reloadUsers();

				return true;
			}

			else{
				this.errormessage = "User information is not correct ";
			}
		}

		return false;
	}

	public void reloadUsers() {
		try{

			PrintWriter pw = new PrintWriter(new FileWriter(path));
			for(User u : this.users){
				String userString = "";
				String uName = u.getUsername();
				String pass = u.getPassword();

				DateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm");
				String date = df.format(u.getLastLogin());

				userString = uName + "::" + pass + "::" + date;

				pw.println(userString);

			}

			pw.close();
		}
		catch(Exception e){System.out.println(e.getMessage());}

	}



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

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

	public void setErrormessage(String errormessage) {
		this.errormessage = errormessage;
	}

	public String getUsername() {
		return username;
	}

	public String getPassword() {
		return password;
	}

	public String getErrormessage() {
		return errormessage;
	}

	public String getLastLogin(){
		return this.lastLogin;
	}
}