package org.bukkit.craftbukkit;

import org.apache.commons.lang.Validate;
import org.bukkit.Effect;
import org.bukkit.Material;
import org.bukkit.block.BlockFace;
import org.bukkit.potion.Potion;

public class CraftEffect
{
	public static <T> int getDataValue(Effect effect, T data)
	{
		int datavalue;
		switch(effect)
		{
		case POTION_BREAK:
			datavalue = ((Potion) data).toDamageValue() & 0x3F;
			break;
		case RECORD_PLAY:
			Validate.isTrue(((Material) data).isRecord(), "Invalid record type!");
			datavalue = ((Material) data).getId();
			break;
		case SMOKE:
			switch((BlockFace) data)
			{ // TODO: Verify (Where did these values come from...?)
			case SOUTH_EAST:
				datavalue = 0;
				break;
			case SOUTH:
				datavalue = 1;
				break;
			case SOUTH_WEST:
				datavalue = 2;
				break;
			case EAST:
				datavalue = 3;
				break;
			case UP:
			case SELF:
				datavalue = 4;
				break;
			case WEST:
				datavalue = 5;
				break;
			case NORTH_EAST:
				datavalue = 6;
				break;
			case NORTH:
				datavalue = 7;
				break;
			case NORTH_WEST:
				datavalue = 8;
				break;
			default:
				throw new IllegalArgumentException("Bad smoke direction!");
			}
			break;
		case STEP_SOUND:
			Validate.isTrue(((Material) data).isBlock(), "Material is not a block!");
			datavalue = ((Material) data).getId();
			break;
		default:
			datavalue = 0;
		}
		return datavalue;
	}
}