/*
 * This file is part of Applied Energistics 2.
 * Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved.
 *
 * Applied Energistics 2 is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Applied Energistics 2 is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Applied Energistics 2.  If not, see <http://www.gnu.org/licenses/lgpl>.
 */

package appeng.util;

import java.util.ArrayList;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.IInventory;
import net.minecraft.inventory.ISidedInventory;
import net.minecraft.item.ItemStack;
import net.minecraft.tileentity.TileEntityChest;
import net.minecraftforge.common.util.ForgeDirection;

import appeng.api.config.FuzzyMode;
import appeng.core.AppEng;
import appeng.integration.IntegrationType;
import appeng.integration.abstraction.IBetterStorage;
import appeng.util.inv.AdaptorIInventory;
import appeng.util.inv.AdaptorList;
import appeng.util.inv.AdaptorPlayerInventory;
import appeng.util.inv.IInventoryDestination;
import appeng.util.inv.ItemSlot;
import appeng.util.inv.WrapperMCISidedInventory;

public abstract class InventoryAdaptor implements Iterable<ItemSlot>
{

	// return what was extracted.
	public abstract ItemStack removeItems(int amount, ItemStack filter, IInventoryDestination destination);

	public abstract ItemStack simulateRemove(int amount, ItemStack filter, IInventoryDestination destination);

	// return what was extracted.
	public abstract ItemStack removeSimilarItems(int amount, ItemStack filter, FuzzyMode fuzzyMode, IInventoryDestination destination);

	public abstract ItemStack simulateSimilarRemove(int amount, ItemStack filter, FuzzyMode fuzzyMode, IInventoryDestination destination);

	// return what isn't used...
	public abstract ItemStack addItems(ItemStack toBeAdded);

	public abstract ItemStack simulateAdd(ItemStack toBeSimulated);

	public abstract boolean containsItems();

	// returns an appropriate adaptor, or null
	public static InventoryAdaptor getAdaptor(Object te, ForgeDirection d)
	{
		if ( te == null )
			return null;

		IBetterStorage bs = (IBetterStorage) (AppEng.instance.isIntegrationEnabled( IntegrationType.BetterStorage ) ? AppEng.instance.getIntegration( IntegrationType.BetterStorage ) : null);

		if ( te instanceof EntityPlayer )
		{
			return new AdaptorIInventory( new AdaptorPlayerInventory( ((EntityPlayer) te).inventory, false ) );
		}
		else if ( te instanceof ArrayList )
		{
			@SuppressWarnings( "unchecked" )
			final ArrayList<ItemStack> list = ( ArrayList<ItemStack> ) te;

			return new AdaptorList( list );
		}
		else if ( bs != null && bs.isStorageCrate( te )  )
		{
			return bs.getAdaptor( te, d );
		}
		else if ( te instanceof TileEntityChest )
		{
			return new AdaptorIInventory( Platform.GetChestInv( te ) );
		}
		else if ( te instanceof ISidedInventory )
		{
			ISidedInventory si =(ISidedInventory)te;
			int[] slots = si.getAccessibleSlotsFromSide( d.ordinal() );
			if ( si.getSizeInventory() > 0 && slots != null && slots.length > 0 )
				return new AdaptorIInventory( new WrapperMCISidedInventory( si, d ) );
		}
		else if ( te instanceof IInventory )
		{
			IInventory i =(IInventory)te;
			if ( i.getSizeInventory() > 0 )
				return new AdaptorIInventory( i );
		}

		return null;
	}
}