/**
 * 
 */
package iamrescue.belief.gui;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Polygon;
import java.awt.Shape;
import java.awt.Stroke;

import rescuecore2.misc.gui.ScreenTransform;
import rescuecore2.standard.entities.Building;
import rescuecore2.standard.entities.Edge;
import rescuecore2.standard.view.AreaLayer;

/**
 * @author Sebastian
 * 
 */
public class EnhancedBuildingLayer extends AreaLayer<Building> {
	private static final Color HEATING = new Color(176, 176, 56, 128);
	private static final Color BURNING = new Color(204, 122, 50, 128);
	private static final Color INFERNO = new Color(160, 52, 52, 128);
	private static final Color WATER_DAMAGE = new Color(50, 120, 130, 128);
	private static final Color MINOR_DAMAGE = new Color(100, 140, 210, 128);
	private static final Color MODERATE_DAMAGE = new Color(100, 70, 190, 128);
	private static final Color SEVERE_DAMAGE = new Color(80, 60, 140, 128);
	private static final Color BURNT_OUT = new Color(0, 0, 0, 255);

	private static final Color OUTLINE_COLOUR = Color.GRAY.darker();
	private static final Color ENTRANCE = new Color(120, 120, 120);

	private static final Stroke WALL_STROKE = new BasicStroke(2,
			BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER);
	private static final Stroke ENTRANCE_STROKE = new BasicStroke(1,
			BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER);

	/**
	 * Construct a building view layer.
	 */
	public EnhancedBuildingLayer() {
		super(Building.class);
	}

	@Override
	public String getName() {
		return "Building shapes";
	}

	@Override
	protected void paintEdge(Edge e, Graphics2D g, ScreenTransform t) {
		g.setColor(OUTLINE_COLOUR);
		g.setStroke(e.isPassable() ? ENTRANCE_STROKE : WALL_STROKE);
		g.drawLine(t.xToScreen(e.getStartX()), t.yToScreen(e.getStartY()), t
				.xToScreen(e.getEndX()), t.yToScreen(e.getEndY()));
	}

	@Override
	protected void paintShape(Building b, Polygon shape, Graphics2D g) {
		drawBrokenness(b, shape, g);
		drawFieryness(b, shape, g);
	}

	private void drawFieryness(Building b, Polygon shape, Graphics2D g) {
		if (!b.isFierynessDefined()) {
			return;
		}
		switch (b.getFierynessEnum()) {
		case UNBURNT:
			return;
		case HEATING:
			g.setColor(HEATING);
			break;
		case BURNING:
			g.setColor(BURNING);
			break;
		case INFERNO:
			g.setColor(INFERNO);
			break;
		case WATER_DAMAGE:
			g.setColor(WATER_DAMAGE);
			break;
		case MINOR_DAMAGE:
			g.setColor(MINOR_DAMAGE);
			break;
		case MODERATE_DAMAGE:
			g.setColor(MODERATE_DAMAGE);
			break;
		case SEVERE_DAMAGE:
			g.setColor(SEVERE_DAMAGE);
			break;
		case BURNT_OUT:
			g.setColor(BURNT_OUT);
			break;
		default:
			throw new IllegalArgumentException(
					"Don't know how to render fieryness "
							+ b.getFierynessEnum());
		}
		g.fill(shape);
	}

	private void drawBrokenness(Building b, Shape shape, Graphics2D g) {
		if (!b.isBrokennessDefined()) {
			return;
		}
		int brokenness = b.getBrokenness();
		// CHECKSTYLE:OFF:MagicNumber
		int colour = Math.max(0, 135 - brokenness / 2);
		// CHECKSTYLE:ON:MagicNumber
		g.setColor(new Color(colour, colour, colour));
		g.fill(shape);
	}
}