import java.awt.Graphics;
import java.util.ArrayList;

public class Model {
	// instance variables
	private int score;
	private ArrayList<IShape> bubbles;

	// constructor
	public Model() {
		score = 0;
		bubbles = new ArrayList<IShape>();
	}

	// getters and setters
	public int getScore() {
		return score;
	}

	/**
	 * @param w
	 * @param h
	 */
	public void addBubble(int w, int h) {
		bubbles.add(new Bubble((int) (w * Math.random()), (int) (h * Math.random())));
	}

	/**
	 * @param dx
	 * @param dy
	 */
	public void moveAll(int dx, int dy) {
		for (int i = 0; i < bubbles.size(); i++) {
			bubbles.get(i).setX(bubbles.get(i).getX() + dx);
			bubbles.get(i).setY(bubbles.get(i).getY() + dy);
		}
	}

	/**
	 * clear all bubbles
	 * 
	 * @param w
	 * @param h
	 */
	public void clearInvisibles(int w, int h) {
		for (int i = bubbles.size() - 1; i >= 0; i--) {
			if (!bubbles.get(i).isVisible(w, h)) {
				bubbles.remove(i);
				score--;
			}
		}
	}

	/**
	 * delete bubbles that are hit by the mouse
	 * 
	 * @param x
	 * @param y
	 */
	public void deleteBubblesAtPoint(int x, int y) {
		for (int i = bubbles.size() - 1; i >= 0; i--) {
			if (bubbles.get(i).isIn(x, y)) {
				bubbles.remove(i);
				score++;
			}
		}
	}

	/**
	 * draw all bubbles
	 *
	 * @param g
	 */
	public void drawAll(Graphics g) {
		for (IShape bubble : bubbles) {
			bubble.draw(g);
		}
	}

	public static void testModel() {
		Model m = new Model();
		System.out.println(m.getScore() == 0);
		System.out.println(m.bubbles.size() == 0);
		m.addBubble(100, 100);
		m.addBubble(100, 100);
		System.out.println(m.getScore() == 0);
		System.out.println(m.bubbles.size() == 2);
		m.clearInvisibles(200, 200);
		System.out.println(m.getScore() == 0);
		System.out.println(m.bubbles.size() == 2);
		m.clearInvisibles(0, 0);
		System.out.println(m.getScore() == -2);
		System.out.println(m.bubbles.size() == 0);
		m.addBubble(100, 100);
		m.addBubble(100, 100);
		System.out.println(m.getScore() == -2);
		System.out.println(m.bubbles.size() == 2);
		m.moveAll(200, 200);
		System.out.println(m.getScore() == -2);
		System.out.println(m.bubbles.size() == 2);
		m.clearInvisibles(200, 200);
		System.out.println(m.getScore() == -4);
		System.out.println(m.bubbles.size() == 0);
	}
}