/*
 * 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.items.contents;


import appeng.api.networking.security.IActionSource;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;

import appeng.api.AEApi;
import appeng.api.config.Actionable;
import appeng.api.config.PowerMultiplier;
import appeng.api.config.Settings;
import appeng.api.config.SortDir;
import appeng.api.config.SortOrder;
import appeng.api.config.ViewItems;
import appeng.api.implementations.guiobjects.IPortableCell;
import appeng.api.implementations.items.IAEItemPowerStorage;
import appeng.api.storage.IMEMonitor;
import appeng.api.storage.IStorageChannel;
import appeng.api.storage.channels.IItemStorageChannel;
import appeng.api.storage.data.IAEItemStack;
import appeng.api.storage.data.IAEStack;
import appeng.api.util.IConfigManager;
import appeng.container.interfaces.IInventorySlotAware;
import appeng.me.helpers.MEMonitorHandler;
import appeng.util.ConfigManager;
import appeng.util.Platform;

import java.util.Collections;


public class PortableCellViewer extends MEMonitorHandler<IAEItemStack> implements IPortableCell, IInventorySlotAware
{

	private final ItemStack target;
	private final IAEItemPowerStorage ips;
	private final int inventorySlot;

	public PortableCellViewer( final ItemStack is, final int slot )
	{
		super( AEApi.instance().registries().cell().getCellInventory( is, null, AEApi.instance().storage().getStorageChannel( IItemStorageChannel.class ) ) );
		this.ips = (IAEItemPowerStorage) is.getItem();
		this.target = is;
		this.inventorySlot = slot;
	}

	@Override
	public int getInventorySlot()
	{
		return this.inventorySlot;
	}

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

	@Override
	public double extractAEPower( double amt, final Actionable mode, final PowerMultiplier usePowerMultiplier )
	{
		amt = usePowerMultiplier.multiply( amt );

		if( mode == Actionable.SIMULATE )
		{
			return usePowerMultiplier.divide( Math.min( amt, this.ips.getAECurrentPower( this.target ) ) );
		}

		return usePowerMultiplier.divide( this.ips.extractAEPower( this.target, amt, Actionable.MODULATE ) );
	}

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

		final IAEItemStack injected = super.injectItems( input, mode, src );

		if( mode == Actionable.MODULATE && ( injected == null || injected.getStackSize() != size ) )
		{
			this.notifyListenersOfChange( Collections.singletonList( input.copy().setStackSize( input.getStackSize() - ( injected == null ? 0 : injected.getStackSize() ) ) ), null);
		}

		return injected;
	}

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

		if( mode == Actionable.MODULATE && extractable != null )
		{
			this.notifyListenersOfChange( Collections.singletonList( request.copy().setStackSize( -extractable.getStackSize() ) ), null );
		}

		return extractable;
	}

	@Override
	public <T extends IAEStack<T>> IMEMonitor<T> getInventory( IStorageChannel<T> channel )
	{
		if( channel == AEApi.instance().storage().getStorageChannel( IItemStorageChannel.class ) )
		{
			return (IMEMonitor<T>) this;
		}
		return null;
	}

	@Override
	public IConfigManager getConfigManager()
	{
		final ConfigManager out = new ConfigManager( ( manager, settingName, newValue ) ->
		{
			final NBTTagCompound data = Platform.openNbtData( PortableCellViewer.this.target );
			manager.writeToNBT( data );
		} );

		out.registerSetting( Settings.SORT_BY, SortOrder.NAME );
		out.registerSetting( Settings.VIEW_MODE, ViewItems.ALL );
		out.registerSetting( Settings.SORT_DIRECTION, SortDir.ASCENDING );

		out.readFromNBT( Platform.openNbtData( this.target ).copy() );
		return out;
	}
}