package org.bukkit.craftbukkit.entity;


import org.apache.commons.lang.Validate;
import org.bukkit.Rotation;
import org.bukkit.block.BlockFace;
import org.bukkit.craftbukkit.CraftServer;
import org.bukkit.craftbukkit.CraftWorld;
import org.bukkit.craftbukkit.inventory.CraftItemStack;
import org.bukkit.entity.EntityType;
import org.bukkit.entity.ItemFrame;

public class CraftItemFrame extends CraftHanging implements ItemFrame
{
	public CraftItemFrame(CraftServer server, net.minecraft.entity.item.EntityItemFrame entity)
	{
		super(server, entity);
	}

	public boolean setFacingDirection(BlockFace face, boolean force)
	{
		if(!super.setFacingDirection(face, force))
		{
			return false;
		}

		net.minecraft.world.WorldServer world = ((CraftWorld) this.getWorld()).getHandle();
		world.getEntityTracker().removeEntityFromAllTrackingPlayers(this.getHandle());
		world.getEntityTracker().addEntityToTracker(this.getHandle());
		return true;
	}

	public void setItem(org.bukkit.inventory.ItemStack item)
	{
		if(item == null || item.getTypeId() == 0)
		{
			getHandle().getDataWatcher().addObjectByDataType(2, 5);
			getHandle().getDataWatcher().setObjectWatched(2);
		}
		else
		{
			getHandle().setDisplayedItem(CraftItemStack.asNMSCopy(item));
		}
	}

	public org.bukkit.inventory.ItemStack getItem()
	{
		return CraftItemStack.asBukkitCopy(getHandle().getDisplayedItem());
	}

	public Rotation getRotation()
	{
		return toBukkitRotation(getHandle().getRotation());
	}

	Rotation toBukkitRotation(int value)
	{
		// Translate NMS rotation integer to Bukkit API
		switch(value)
		{
		case 0:
			return Rotation.NONE;
		case 1:
			return Rotation.CLOCKWISE;
		case 2:
			return Rotation.FLIPPED;
		case 3:
			return Rotation.COUNTER_CLOCKWISE;
		default:
			throw new AssertionError("Unknown rotation " + value + " for " + getHandle());
		}
	}

	public void setRotation(Rotation rotation)
	{
		Validate.notNull(rotation, "Rotation cannot be null");
		getHandle().setItemRotation(toInteger(rotation));
	}

	static int toInteger(Rotation rotation)
	{
		// Translate Bukkit API rotation to NMS integer
		switch(rotation)
		{
		case NONE:
			return 0;
		case CLOCKWISE:
			return 1;
		case FLIPPED:
			return 2;
		case COUNTER_CLOCKWISE:
			return 3;
		default:
			throw new IllegalArgumentException(rotation + " is not applicable to an ItemFrame");
		}
	}

	@Override
	public net.minecraft.entity.item.EntityItemFrame getHandle()
	{
		return (net.minecraft.entity.item.EntityItemFrame) entity;
	}

	@Override
	public String toString()
	{
		return "CraftItemFrame{item=" + getItem() + ", rotation=" + getRotation() + "}";
	}

	public EntityType getType()
	{
		return EntityType.ITEM_FRAME;
	}
}