package org.bukkit.material;

import org.bukkit.Material;
import org.bukkit.block.BlockFace;

/**
 * Represents stairs.
 */
public class Stairs extends MaterialData implements Directional
{

	/**
	 * @deprecated Magic value
	 */
	@Deprecated
	public Stairs(final int type)
	{
		super(type);
	}

	public Stairs(final Material type)
	{
		super(type);
	}

	/**
	 * @deprecated Magic value
	 */
	@Deprecated
	public Stairs(final int type, final byte data)
	{
		super(type, data);
	}

	/**
	 * @deprecated Magic value
	 */
	@Deprecated
	public Stairs(final Material type, final byte data)
	{
		super(type, data);
	}

	/**
	 * @return the direction the stairs ascend towards
	 */
	public BlockFace getAscendingDirection()
	{
		byte data = getData();

		switch(data & 0x3)
		{
		case 0x0:
		default:
			return BlockFace.EAST;

		case 0x1:
			return BlockFace.WEST;

		case 0x2:
			return BlockFace.SOUTH;

		case 0x3:
			return BlockFace.NORTH;
		}
	}

	/**
	 * @return the direction the stairs descend towards
	 */
	public BlockFace getDescendingDirection()
	{
		return getAscendingDirection().getOppositeFace();
	}

	/**
	 * Set the direction the stair part of the block is facing
	 */
	public void setFacingDirection(BlockFace face)
	{
		byte data;

		switch(face)
		{
		case NORTH:
			data = 0x3;
			break;

		case SOUTH:
			data = 0x2;
			break;

		case EAST:
		default:
			data = 0x0;
			break;

		case WEST:
			data = 0x1;
			break;
		}

		setData((byte) ((getData() & 0xC) | data));
	}

	/**
	 * @return the direction the stair part of the block is facing
	 */
	public BlockFace getFacing()
	{
		return getDescendingDirection();
	}

	/**
	 * Test if step is inverted
	 *
	 * @return true if inverted (top half), false if normal (bottom half)
	 */
	public boolean isInverted()
	{
		return ((getData() & 0x4) != 0);
	}

	/**
	 * Set step inverted state
	 *
	 * @param inv - true if step is inverted (top half), false if step is
	 *            normal (bottom half)
	 */
	public void setInverted(boolean inv)
	{
		int dat = getData() & 0x3;
		if(inv)
		{
			dat |= 0x4;
		}
		setData((byte) dat);
	}

	@Override
	public String toString()
	{
		return super.toString() + " facing " + getFacing() + (isInverted() ? " inverted" : "");
	}

	@Override
	public Stairs clone()
	{
		return (Stairs) super.clone();
	}
}