/*
 * 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.items.contents;


import net.minecraft.item.ItemStack;
import net.minecraftforge.items.IItemHandler;

import appeng.api.implementations.guiobjects.INetworkTool;
import appeng.api.implementations.items.IUpgradeModule;
import appeng.api.networking.IGridHost;
import appeng.tile.inventory.AppEngInternalInventory;
import appeng.util.Platform;
import appeng.util.inv.IAEAppEngInventory;
import appeng.util.inv.InvOperation;
import appeng.util.inv.filter.IAEItemFilter;


public class NetworkToolViewer implements INetworkTool, IAEAppEngInventory
{

	private final AppEngInternalInventory inv;
	private final ItemStack is;
	private final IGridHost gh;

	public NetworkToolViewer( final ItemStack is, final IGridHost gHost )
	{
		this.is = is;
		this.gh = gHost;
		this.inv = new AppEngInternalInventory( this, 9 );
		this.inv.setFilter( new NetworkToolInventoryFilter() );
		if( is.hasTagCompound() ) // prevent crash when opening network status screen.
		{
			this.inv.readFromNBT( Platform.openNbtData( is ), "inv" );
		}
	}

	@Override
	public void saveChanges()
	{
		this.inv.markDirty( -1 );
	}

	@Override
	public void onChangeInventory( IItemHandler inv, int slot, InvOperation mc, ItemStack removedStack, ItemStack newStack )
	{
		this.inv.writeToNBT( Platform.openNbtData( this.is ), "inv" );
	}

	@Override
	public ItemStack getItemStack()
	{
		return this.is;
	}

	@Override
	public IGridHost getGridHost()
	{
		return this.gh;
	}

	private static class NetworkToolInventoryFilter implements IAEItemFilter
	{
		@Override
		public boolean allowExtract( IItemHandler inv, int slot, int amount )
		{
			return true;
		}

		@Override
		public boolean allowInsert( IItemHandler inv, int slot, ItemStack stack )
		{
			return stack.getItem() instanceof IUpgradeModule && ( (IUpgradeModule) stack.getItem() ).getType( stack ) != null;
		}
	}

	public IItemHandler getInternalInventory()
	{
		return this.inv;
	}

	@Override
	public IItemHandler getInventory()
	{
		return this.inv;
	}
}