/*
 * 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.entity;


import java.util.List;

import net.minecraft.block.material.Material;
import net.minecraft.block.state.IBlockState;
import net.minecraft.entity.Entity;
import net.minecraft.entity.item.EntityItem;
import net.minecraft.init.Items;
import net.minecraft.item.ItemStack;
import net.minecraft.util.math.AxisAlignedBB;
import net.minecraft.util.math.BlockPos;
import net.minecraft.util.math.MathHelper;
import net.minecraft.world.World;

import appeng.api.AEApi;
import appeng.api.definitions.IMaterials;
import appeng.client.EffectType;
import appeng.core.AEConfig;
import appeng.core.CommonHelper;
import appeng.core.features.AEFeature;
import appeng.helpers.Reflected;
import appeng.util.Platform;


public final class EntityChargedQuartz extends AEBaseEntityItem
{

	private int delay = 0;
	private int transformTime = 0;

	@Reflected
	public EntityChargedQuartz( final World w )
	{
		super( w );
	}

	public EntityChargedQuartz( final World w, final double x, final double y, final double z, final ItemStack is )
	{
		super( w, x, y, z, is );
	}

	@Override
	public void onUpdate()
	{
		super.onUpdate();

		if( this.isDead || !AEConfig.instance().isFeatureEnabled( AEFeature.IN_WORLD_FLUIX ) )
		{
			return;
		}

		if( Platform.isClient() && this.delay > 30 && AEConfig.instance().isEnableEffects() )
		{
			CommonHelper.proxy.spawnEffect( EffectType.Lightning, this.worldObj, this.posX, this.posY, this.posZ, null );
			this.delay = 0;
		}

		this.delay++;

		final int j = MathHelper.floor_double( this.posX );
		final int i = MathHelper.floor_double( ( this.getEntityBoundingBox().minY + this.getEntityBoundingBox().maxY ) / 2.0D );
		final int k = MathHelper.floor_double( this.posZ );

		IBlockState state = this.worldObj.getBlockState( new BlockPos( j, i, k ) );
		final Material mat = state.getBlock().getMaterial( state );

		if( Platform.isServer() && mat.isLiquid() )
		{
			this.transformTime++;
			if( this.transformTime > 60 )
			{
				if( !this.transform() )
				{
					this.transformTime = 0;
				}
			}
		}
		else
		{
			this.transformTime = 0;
		}
	}

	private boolean transform()
	{
		final ItemStack item = this.getEntityItem();
		final IMaterials materials = AEApi.instance().definitions().materials();

		if( materials.certusQuartzCrystalCharged().isSameAs( item ) )
		{
			final AxisAlignedBB region = new AxisAlignedBB( this.posX - 1, this.posY - 1, this.posZ - 1, this.posX + 1, this.posY + 1, this.posZ + 1 );
			final List<Entity> l = this.getCheckedEntitiesWithinAABBExcludingEntity( region );

			EntityItem redstone = null;
			EntityItem netherQuartz = null;

			for( final Entity e : l )
			{
				if( e instanceof EntityItem && !e.isDead )
				{
					final ItemStack other = ( (EntityItem) e ).getEntityItem();
					if( other != null && other.stackSize > 0 )
					{
						if( Platform.itemComparisons().isEqualItem( other, new ItemStack( Items.REDSTONE ) ) )
						{
							redstone = (EntityItem) e;
						}

						if( Platform.itemComparisons().isEqualItem( other, new ItemStack( Items.QUARTZ ) ) )
						{
							netherQuartz = (EntityItem) e;
						}
					}
				}
			}

			if( redstone != null && netherQuartz != null )
			{
				this.getEntityItem().stackSize--;
				redstone.getEntityItem().stackSize--;
				netherQuartz.getEntityItem().stackSize--;

				if( this.getEntityItem().stackSize <= 0 )
				{
					this.setDead();
				}

				if( redstone.getEntityItem().stackSize <= 0 )
				{
					redstone.setDead();
				}

				if( netherQuartz.getEntityItem().stackSize <= 0 )
				{
					netherQuartz.setDead();
				}

				materials.fluixCrystal().maybeStack( 2 ).ifPresent( is ->
				{
					final EntityItem entity = new EntityItem( this.worldObj, this.posX, this.posY, this.posZ, is );

					this.worldObj.spawnEntityInWorld( entity );
				} );

				return true;
			}
		}

		return false;
	}
}