package game.states;

import game.core.InGameState;
import game.gui.niftyinput.CustomSlickInputSystem;
import game.gui.screens.ShowQuestObjectiveStateStartScreen;

import java.util.Vector;

import org.newdawn.slick.GameContainer;
import org.newdawn.slick.Graphics;
import org.newdawn.slick.Input;
import org.newdawn.slick.SlickException;
import org.newdawn.slick.state.StateBasedGame;
import org.newdawn.slick.state.transition.FadeInTransition;
import org.newdawn.slick.state.transition.FadeOutTransition;

import de.lessvoid.nifty.Nifty;
import de.lessvoid.nifty.builder.ElementBuilder;
import de.lessvoid.nifty.builder.PanelBuilder;
import de.lessvoid.nifty.builder.TextBuilder;
import de.lessvoid.nifty.controls.ScrollPanel;
import de.lessvoid.nifty.controls.ScrollPanel.AutoScroll;
import de.lessvoid.nifty.controls.scrollpanel.builder.ScrollPanelBuilder;
import de.lessvoid.nifty.elements.Element;
import de.lessvoid.nifty.screen.Screen;
import de.lessvoid.nifty.slick2d.NiftyOverlayBasicGameState;
import de.lessvoid.nifty.slick2d.loaders.SlickAddLoaderLocation;
import de.lessvoid.nifty.slick2d.loaders.SlickRenderFontLoaders;
import de.lessvoid.nifty.slick2d.render.font.loader.DefaultSlickRenderFontLoader;

/**
 * @author Michel Montenegro
 */
public class ShowQuestObjectiveState extends NiftyOverlayBasicGameState{

	public static final int ID = 3;
	public ShowQuestObjectiveState() {

	}


	@Override
	public int getID() {
		return ID;
	}

	@Override
	protected void enterState(GameContainer container, StateBasedGame sbGame)
			throws SlickException {

	}

	@Override
	protected void initGameAndGUI(GameContainer container, StateBasedGame sbGame)
			throws SlickException {
		initNifty(container, sbGame, new CustomSlickInputSystem());

	}

	@Override
	protected void leaveState(GameContainer arg0, StateBasedGame arg1)
			throws SlickException {

	}



	private static Element createMapItemPopup(Nifty nifty, Screen screen, Element parent)
	{
	    Element scrollPanel = createScrollPanel( nifty, screen, parent );
	    Element scrollContainer = scrollPanel.findElementByName( "#nifty-scrollpanel-child-root" );
	    Vector<ElementBuilder> list = new Vector<ElementBuilder>();
	    list.add( createHeader("------" ) );
	    list.add( createHeader( "Actions" ) );
	    list.add( createHeader( "--------" ) );

	    createVerticalPanel( nifty, screen, scrollContainer, list );
	    scrollContainer.layoutElements();
	    parent.getNiftyControl(ScrollPanel.class).setUp( 0, 20, 0, 20*10, AutoScroll.OFF ); // basically 20px for clicking on the scrollbar buttons and 200px when you press below or above the scrollhandle (and when the scrollbar someday supports the page up/down keys...)
	    return parent;
	}

	private static Element createScrollPanel( Nifty nifty, Screen screen, Element parent )
	{
	    ScrollPanelBuilder scrollBuilder = new ScrollPanelBuilder( "scrollpanel" );
	    scrollBuilder.width( "100%" );
	    scrollBuilder.height( "100%" );
	    scrollBuilder.set( "vertical", "true" );
	    scrollBuilder.set( "horizontal", "false" );
	    return scrollBuilder.build( nifty, screen, parent );
	}

	private static TextBuilder createHeader( String text )
	{
	    TextBuilder textBuilder = new TextBuilder();
	    textBuilder.width( 500 + "px" );
	    textBuilder.height( 20 + "px" );
	    textBuilder.font( "resources/fonts/console.fnt" );
	    textBuilder.textHAlignLeft();
	    textBuilder.text(text);
	    return textBuilder;
	}
	private static Element createVerticalPanel( Nifty nifty, Screen screen, Element parent, Vector<ElementBuilder> list )
	{
	    PanelBuilder panelBuilder = new PanelBuilder();
	    panelBuilder.x( "0px" );
	    panelBuilder.y( "0px" );
	    panelBuilder.width( 20 + "px" );
	    panelBuilder.height( 20 * list.size() + "px" );
	    panelBuilder.alignLeft();
	    panelBuilder.valignTop();
	    panelBuilder.set( "childLayout", "vertical" );
	    panelBuilder.style("nifty-panel");

	    Element panel = panelBuilder.build( nifty, screen, parent );
	    for( int i = 0; i < list.size(); i++ ){
	        list.get( i ).build( nifty, screen, panel);
	    }
	    return panel;
	}


	@Override
	protected void prepareNifty(Nifty nifty, StateBasedGame sbGame) {
		ShowQuestObjectiveStateStartScreen.getInstance().createScreen(nifty);

		SlickRenderFontLoaders.getInstance().addLoader(new DefaultSlickRenderFontLoader(), SlickAddLoaderLocation.first);
		Element sp = getNifty().getCurrentScreen().findElementByName("scrollPanel");
	    createMapItemPopup(getNifty(),getNifty().getCurrentScreen(), sp);
	}

	@Override
	protected void renderGame(GameContainer container, StateBasedGame sbg,
			Graphics graphics) throws SlickException {

	}

	@Override
	protected void updateGame(GameContainer container, StateBasedGame sbGame,
			int delta) throws SlickException {
		if (container.getInput().isKeyPressed(Input.KEY_ESCAPE)) {
			sbGame.enterState(InGameState.ID, new FadeOutTransition(),	new FadeInTransition());
		}
	}

	@Override
	public void mousePressed(int button, int x, int y) {
		super.mousePressed(button, x, y);
	}

	@Override
	public void mouseReleased(int button, int x, int y) {
		super.mouseReleased(button, x, y);
	}

	@Override
	public void mouseMoved(int oldx, int oldy, int newx, int newy) {
		super.mouseMoved(oldx, oldy, newx, newy);
	}

	@Override
	public void keyPressed(final int key, final char c) {

	}

	@Override
	public void keyReleased(final int key, final char c) {

	}
}