/*
 * 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.me.storage;


import appeng.core.features.registries.cell.CreativeCellHandler;
import appeng.me.GridAccessException;
import appeng.me.helpers.MachineSource;
import appeng.tile.storage.TileDrive;
import net.minecraft.item.ItemStack;

import appeng.api.config.Actionable;
import appeng.api.networking.security.IActionSource;
import appeng.api.storage.ICellHandler;
import appeng.api.storage.ICellInventoryHandler;
import appeng.api.storage.data.IAEStack;

import java.util.Collections;


public class DriveWatcher<T extends IAEStack<T>> extends MEInventoryHandler<T>
{

	private int oldStatus = 0;
	private final ItemStack is;
	private final ICellHandler handler;
	private final TileDrive drive;
	private IActionSource source;

	public DriveWatcher( final ICellInventoryHandler<T> i, final ItemStack is, final ICellHandler han, final TileDrive drive )
	{
		super( i, i.getChannel() );
		this.is = is;
		this.handler = han;
		this.drive = drive;
		this.source = new MachineSource( drive );
	}

	public int getStatus()
	{
		return this.handler.getStatusForCell( this.is, (ICellInventoryHandler) this.getInternal() );
	}

	@Override
	public T injectItems( final T input, final Actionable type, final IActionSource src )
	{
		final long size = input.getStackSize();

		final T remainder = super.injectItems( input, type, src );

		if( type == Actionable.MODULATE && ( remainder == null || remainder.getStackSize() != size ) )
		{
			final int newStatus = this.getStatus();

			if( newStatus != this.oldStatus )
			{
				this.drive.blinkCell( this.getSlot() );
				this.oldStatus = newStatus;
			}
			if (this.drive.getProxy().isActive() && !(handler instanceof CreativeCellHandler))
			{
				try
				{
					this.drive.getProxy().getStorage().postAlterationOfStoredItems( this.getChannel(), Collections.singletonList( input.copy().setStackSize( input.getStackSize() - ( remainder == null ? 0 : remainder.getStackSize() ) ) ), this.source );
				} catch ( GridAccessException e )
				{
					e.printStackTrace();
				}
			}
		}

		return remainder;
	}

	@Override
	public T extractItems( final T request, final Actionable type, final IActionSource src )
	{
		final T extractable = super.extractItems( request, type, src );

		if( type == Actionable.MODULATE && extractable != null )
		{
			final int newStatus = this.getStatus();

			if( newStatus != this.oldStatus )
			{
				this.drive.blinkCell( this.getSlot() );
				this.oldStatus = newStatus;
			}
			if (this.drive.getProxy().isActive() && !(handler instanceof CreativeCellHandler ))
			{
				try
				{
					this.drive.getProxy().getStorage().postAlterationOfStoredItems( this.getChannel(), Collections.singletonList( request.copy().setStackSize( -extractable.getStackSize() ) ), this.source );
				} catch ( GridAccessException e )
				{
					e.printStackTrace();
				}
			}
		}

		return extractable;
	}
}