package view;

import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.Collections;

import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;

import model.comPlayer.Player;
import model.playerModel.PlayerModel;

public class UserChooserFrame extends JFrame {

	public static final String PLAYER_LIST_FILE = "players.dat";
	public static final JLabel RULES_TEXT = new JLabel(
			"Here should go some rules text. Lorem ipsum dolor sit amet, consectetur adipiscing elit...");
	private static final long serialVersionUID = 1L;

	private final Player comPlayer;
	private final JButton playButton = new JButton("Play!");
	private final JComboBox<String> userNameBox = new JComboBox<String>();
	private ArrayList<String> users;

	public UserChooserFrame(ParsedArgs parsedArgs) {
		this.comPlayer = parsedArgs.getComPlayer();
		initLayout();
		initActions();

		pack();
		setResizable(false);
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		setLocationRelativeTo(null);
		setVisible(true);
	}

	private String getUserListPath() {
		return PlayerModel.DATA_FOLDER + PLAYER_LIST_FILE;
	}

	private ArrayList<String> getUsers() {
		FileInputStream fin = null;
		ObjectInputStream oin = null;

		try {
			fin = new FileInputStream(getUserListPath());
			oin = new ObjectInputStream(fin);

			@SuppressWarnings("unchecked")
			ArrayList<String> list = (ArrayList<String>) oin.readObject();

			oin.close();
			return list;

		} catch (Exception e) {
			return new ArrayList<String>();
		}
	}

	private void initActions() {
		userNameBox.setEditable(true);

		users = getUsers();
		Collections.sort(users);

		for (int i = 0; i < users.size(); i++) {
			userNameBox.addItem(users.get(i));
		}

		ActionListener psActionListener = new PlayerSelectActionListener(this);

		userNameBox.addActionListener(psActionListener);
		playButton.addActionListener(psActionListener);
	}

	private void initLayout() {
		GridBagLayout gbl = new GridBagLayout();

		GridBagConstraints con = new GridBagConstraints();
		con.fill = GridBagConstraints.BOTH;
		con.gridheight = 1;
		con.gridwidth = 5;
		con.gridx = 0;
		con.gridy = 0;
		con.insets = new Insets(20, 20, 5, 20);
		con.weightx = 1;
		con.weighty = 1;
		gbl.setConstraints(RULES_TEXT, con);

		con = new GridBagConstraints();
		con.fill = GridBagConstraints.BOTH;
		con.gridheight = 1;
		con.gridwidth = 5;
		con.gridx = 0;
		con.gridy = 1;
		con.insets = new Insets(5, 20, 5, 20);
		con.weightx = 1;
		con.weighty = 1;
		gbl.setConstraints(userNameBox, con);

		con = new GridBagConstraints();
		con.fill = GridBagConstraints.BOTH;
		con.gridheight = 1;
		con.gridwidth = 1;
		con.gridx = 2;
		con.gridy = 2;
		con.insets = new Insets(5, 20, 20, 20);
		con.weightx = 1;
		con.weighty = 1;
		gbl.setConstraints(playButton, con);

		setLayout(gbl);
		add(RULES_TEXT);
		add(userNameBox);
		add(playButton);
	}

	private void saveUserList() {
		FileOutputStream fout = null;
		ObjectOutputStream oout = null;
		String path = getUserListPath();
		try {
			(new File(PlayerModel.DATA_FOLDER)).mkdirs();

			fout = new FileOutputStream(path);
			oout = new ObjectOutputStream(fout);
			oout.writeObject(users);
			oout.close();
		} catch (IOException ex) {
			ex.printStackTrace();
		}
	}

	void launchSelectedPlayer() {
		String name = ((String) userNameBox.getSelectedItem());
		name = name == null ? name : name.trim().toLowerCase();

		if (name != null && name.compareTo("") != 0) {
			UserChooserFrame.this.setVisible(false);

			boolean found = false;
			for (int i = 0; !found && i < users.size(); i++) {
				if (name.compareTo(users.get(i)) == 0) {
					found = true;
				}
			}

			if (!found) {
				users.add(name);
			}

			saveUserList();
			new MainFrame(name, comPlayer);
		}
	}
}