/*
 * This file is part of Applied Energistics 2.
 * Copyright (c) 2013 - 2015, 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.Comparator;

import appeng.api.config.SortDir;
import appeng.api.storage.data.IAEItemStack;
import appeng.integration.Integrations;
import appeng.integration.abstraction.IInvTweaks;
import appeng.util.item.AEItemStack;


public class ItemSorters
{

	private static SortDir Direction = SortDir.ASCENDING;

	public static final Comparator<IAEItemStack> CONFIG_BASED_SORT_BY_NAME = ( o1, o2 ) ->
	{
		final int cmp = Platform.getItemDisplayName( o1 ).compareToIgnoreCase( Platform.getItemDisplayName( o2 ) );
		return applyDirection( cmp );
	};

	public static final Comparator<IAEItemStack> CONFIG_BASED_SORT_BY_MOD = ( o1, o2 ) ->
	{
		final AEItemStack op1 = (AEItemStack) o1;
		final AEItemStack op2 = (AEItemStack) o2;
		int cmp = op1.getModID().compareToIgnoreCase( op2.getModID() );

		if( cmp == 0 )
		{
			cmp = Platform.getItemDisplayName( o1 ).compareToIgnoreCase( Platform.getItemDisplayName( o2 ) );
		}

		return applyDirection( cmp );
	};

	public static final Comparator<IAEItemStack> CONFIG_BASED_SORT_BY_SIZE = ( o1, o2 ) ->
	{
		final int cmp = Long.compare( o2.getStackSize(), o1.getStackSize() );
		return applyDirection( cmp );
	};

	private static IInvTweaks api;

	public static final Comparator<IAEItemStack> CONFIG_BASED_SORT_BY_INV_TWEAKS = ( o1, o2 ) ->
	{
		if( api == null )
		{
			return CONFIG_BASED_SORT_BY_NAME.compare( o1, o2 );
		}

		final int cmp = api.compareItems( o1.createItemStack(), o2.createItemStack() );
		return applyDirection( cmp );
	};

	public static void init()
	{
		if( api != null )
		{
			return;
		}

		if( Integrations.invTweaks().isEnabled() )
		{
			api = Integrations.invTweaks();
		}
		else
		{
			api = null;
		}
	}

	private static SortDir getDirection()
	{
		return Direction;
	}

	public static void setDirection( final SortDir direction )
	{
		Direction = direction;
	}

	private static int applyDirection( int cmp )
	{
		if( getDirection() == SortDir.ASCENDING )
		{
			return cmp;
		}
		return -cmp;
	}
}