package ei.game.gamestate;

import java.io.File;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.Queue;

import ei.engine.effects.BitmapProgressBar;
import ei.engine.scene.Sprite;
import ei.engine.sound.SoundLoader;
import ei.engine.state.GameState;
import ei.engine.state.GameStateManager;
import ei.engine.texture.TextureLoader;
import ei.engine.util.FileFinderHasher;

/**
 * This class handels the loading of the
 * images and sounds to the memmory.
 * 
 * @author Ziver
 */
public class LoadingState extends GameState{
	//The extensions of the files
	private static final String[] TEXTURES = {
		"jpg","png","bmp"
	};
	private static final String[] SOUNDS = {
		"wav","ogg"
	};
	// The things to load
	private Queue<String> loadTextures;
	private Queue<String> loadSounds;
	//  The name of the next state to activate after loading
	private String nextState;
	private BitmapProgressBar progress;

	
	/**
	 * Creates a loadingstate
	 * @param name The name of the state
	 */
	public LoadingState(String name,String nextState) {
		super(name);
		this.nextState = nextState;
	}	

	@Override
	public void init() {
		loadTextures = new LinkedList<String>();
		loadSounds = new LinkedList<String>();
		
		progress = new BitmapProgressBar("Loading");
		progress.centerToScreen();
		progress.setBarTexture(new Sprite("ProgressBar","data/loadbar_front.png"));
		progress.setProgressTexture(new Sprite("Progress","data/loadbar.png"));
		progress.setBackgroundTexture(new Sprite("progressBackground","data/loadbar_back.png"));
		
		try {
			File dir = new File(getClass().getClassLoader().getResource("data/").toURI());
			ArrayList<File> files = FileFinderHasher.Search(dir);
			for(int i=0; i<files.size() ;i++){
				String ext = files.get(i).getName();
				ext = ext.substring(ext.lastIndexOf ('.')+1,ext.length());

				if(contains(TEXTURES,ext)){
					addTexture(files.get(i).getPath().substring(files.get(i).getPath().lastIndexOf("data"), files.get(i).getPath().length()));
				}
				else if(contains(SOUNDS,ext)){
					addSound(files.get(i).getPath().substring(files.get(i).getPath().lastIndexOf("data"), files.get(i).getPath().length()));
				}
			}
		} catch (URISyntaxException e) {
			e.printStackTrace();
		}
	}
	
	private boolean contains(String[] array, String search){
		for(int i=0; i<array.length ;i++){
			if(array[i].equals(search)){
				return true;
			}
		}
		return false;
	}
	
	/**
	 * Add a texture to be loaded
	 * @param url
	 */
	public void addTexture(String url){
		loadTextures.add(url);
		progress.setMax(loadTextures.size()+loadSounds.size());
	}
	
	/**
	 * Add a sound to be loaded
	 * @param url
	 */
	public void addSound(String url){
		loadSounds.add(url);
		progress.setMax(loadTextures.size()+loadSounds.size());
	}
	
	/**
	 * Loads the things
	 */
	public void update() {
		if(!loadTextures.isEmpty()){
			TextureLoader.getTextureLoaderInstance().getTexture(loadTextures.poll());
			progress.setValue(progress.getValue()+1);
		}
		else if(!loadSounds.isEmpty()){
			SoundLoader.getInstnace().loadSound(loadSounds.poll());
			progress.setValue(progress.getValue()+1);
		}
		else{
			//progress.setValue(progress.getValue()+1);
			if(progress.getProcent() >= 100){
				//deactivate this state and activate the next one
				GameStateManager.getInstance().removeState(this);
				GameStateManager.getInstance().setActive(nextState);
			}			
		}
		progress.update();
	}
	
	/**
	 * Render the load bar
	 */
	public void render() {
		progress.render();
	}

}