package jrummikub.control.network;

import java.util.Iterator;
import java.util.List;
import java.util.UUID;

import jrummikub.model.GameSettings;
import jrummikub.model.PlayerSettings;
import jrummikub.model.PlayerSettings.Type;
import jrummikub.util.Event1;
import jrummikub.util.GameData;
import jrummikub.util.IEvent1;
import jrummikub.util.IListener;
import jrummikub.util.IListener1;
import jrummikub.view.ISettingsPanel.SettingsError;
import jrummikub.view.ISettingsPanel.SettingsMode;
import jrummikub.view.IView;

/**
 * Control for network game host
 */
public class GameOfferControl extends AbstractGameBeginControl {
	private Event1<GameSettings> gameStartEvent = new Event1<GameSettings>();

	/**
	 * Creates new game offer control
	 * 
	 * @param connectionControl
	 *          for events (listening and handling)
	 * @param settings
	 *          the game settings for player list, colors, names
	 * @param view
	 *          the view
	 */
	public GameOfferControl(final IConnectionControl connectionControl,
			final GameSettings settings, final IView view) {
		super(connectionControl, view, new GameData(UUID.randomUUID(), settings),
				SettingsMode.NETWORK_OFFER);

		addConnectionControlListeners(connectionControl, settings);

		connections.add(view.getSettingsPanel().getStartGameEvent()
				.add(new IListener() {
					@Override
					public void handle() {
						gameData.getGameSettings().getPlayerList();
						if (checkPlayers()) {
							startGame();
						}
					}
				}));

		checkPlayers();
	}

	private boolean checkPlayers() {
		for (PlayerSettings s : gameData.getGameSettings().getPlayerList()) {
			if (s.getType() == Type.NETWORK) {
				view.getSettingsPanel().setError(SettingsError.NO_ERROR);
				view.getSettingsPanel().enableStartGameButton(true);
				return true;
			}
		}

		view.getSettingsPanel().setError(SettingsError.WAITING_FOR_PLAYERS);
		view.getSettingsPanel().enableStartGameButton(false);
		return false;
	}

	private void addConnectionControlListeners(
			final IConnectionControl connectionControl, final GameSettings settings) {
		connections.add(connectionControl.getGameJoinEvent().add(
				new IListener1<String>() {
					@Override
					public void handle(String sender) {
						for (PlayerSettings player : settings.getPlayerList()) {
							if (player.getType() == Type.VACANT) {
								player.setName(sender);
								player.setType(Type.NETWORK);

								updateSettingsPanel();
								checkPlayers();

								connectionControl.ackJoinGame(sender, true);
								connectionControl.offerGame(gameData);
								return;
							}
						}

						connectionControl.ackJoinGame(sender, false);
					}
				}));
		connections.add(connectionControl.getGameLeaveEvent().add(
				new IListener1<String>() {
					@Override
					public void handle(String sender) {
						handleLeave(sender);
					}
				}));
		connections.add(connectionControl.getParticipantLeftEvent().add(
				new IListener1<String>() {
					@Override
					public void handle(String nickname) {
						handleLeave(nickname);
					}
				}));
	}

	private void handleLeave(String nickname) {
		List<PlayerSettings> players = gameData.getGameSettings().getPlayerList();
		for (PlayerSettings s : players) {
			if (s.getName().equals(nickname) && s.getType() == Type.NETWORK) {
				s.setType(Type.VACANT);
				s.setName("Offen");

				updateSettingsPanel();
				checkPlayers();

				connectionControl.offerGame(gameData);
				return;
			}
		}
	}

	/**
	 * The event that is emitted when the game is started
	 * 
	 * @return the event
	 */
	public IEvent1<GameSettings> getStartGameEvent() {
		return gameStartEvent;
	}

	private void startGame() {
		abort();
		connectionControl.startGame();

		GameSettings settings = gameData.getGameSettings();
		removeVacant(settings);

		gameStartEvent.emit(settings);
	}

	private void removeVacant(GameSettings settings) {
		Iterator<PlayerSettings> it = settings.getPlayerList().iterator();
		while (it.hasNext()) {
			if (it.next().getType() == Type.VACANT) {
				it.remove();
			}
		}
	}

	/**
	 * sends the game offer and starts the settings panel for host using network
	 * offer type
	 */
	public void startGameOffer() {
		connectionControl.offerGame(gameData);

		view.showSettingsPanel(true);
	}

	@Override
	protected void goBack() {
		abort();
		connectionControl.withdrawGame();
		backEvent.emit();
	}
}