/*
 * 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.cluster.implementations;


import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.IBlockAccess;
import net.minecraft.world.World;

import appeng.api.AEApi;
import appeng.api.definitions.IBlockDefinition;
import appeng.api.definitions.IBlocks;
import appeng.api.util.WorldCoord;
import appeng.me.cluster.IAECluster;
import appeng.me.cluster.IAEMultiBlock;
import appeng.me.cluster.MBCalculator;
import appeng.tile.qnb.TileQuantumBridge;


public class QuantumCalculator extends MBCalculator
{

	private final TileQuantumBridge tqb;

	public QuantumCalculator( final IAEMultiBlock t )
	{
		super( t );
		this.tqb = (TileQuantumBridge) t;
	}

	@Override
	public boolean checkMultiblockScale( final WorldCoord min, final WorldCoord max )
	{

		if( ( max.x - min.x + 1 ) * ( max.y - min.y + 1 ) * ( max.z - min.z + 1 ) == 9 )
		{
			final int ones = ( ( max.x - min.x ) == 0 ? 1 : 0 ) + ( ( max.y - min.y ) == 0 ? 1 : 0 ) + ( ( max.z - min.z ) == 0 ? 1 : 0 );

			final int threes = ( ( max.x - min.x ) == 2 ? 1 : 0 ) + ( ( max.y - min.y ) == 2 ? 1 : 0 ) + ( ( max.z - min.z ) == 2 ? 1 : 0 );

			return ones == 1 && threes == 2;
		}
		return false;
	}

	@Override
	public IAECluster createCluster( final World w, final WorldCoord min, final WorldCoord max )
	{
		return new QuantumCluster( min, max );
	}

	@Override
	public boolean verifyInternalStructure( final World w, final WorldCoord min, final WorldCoord max )
	{

		byte num = 0;

		for( int x = min.x; x <= max.x; x++ )
		{
			for( int y = min.y; y <= max.y; y++ )
			{
				for( int z = min.z; z <= max.z; z++ )
				{
					final BlockPos p = new BlockPos( x, y, z );
					final IAEMultiBlock te = (IAEMultiBlock) w.getTileEntity( p );

					if( !te.isValid() )
					{
						return false;
					}

					num++;
					final IBlocks blocks = AEApi.instance().definitions().blocks();
					if( num == 5 )
					{
						if( !this.isBlockAtLocation( w, p, blocks.quantumLink() ) )
						{
							return false;
						}
					}
					else
					{
						if( !this.isBlockAtLocation( w, p, blocks.quantumRing() ) )
						{
							return false;
						}
					}
				}
			}
		}
		return true;
	}

	@Override
	public void disconnect()
	{
		this.tqb.disconnect( true );
	}

	@Override
	public void updateTiles( final IAECluster cl, final World w, final WorldCoord min, final WorldCoord max )
	{
		byte num = 0;
		byte ringNum = 0;
		final QuantumCluster c = (QuantumCluster) cl;

		for( int x = min.x; x <= max.x; x++ )
		{
			for( int y = min.y; y <= max.y; y++ )
			{
				for( int z = min.z; z <= max.z; z++ )
				{
					final TileQuantumBridge te = (TileQuantumBridge) w.getTileEntity( new BlockPos( x, y, z ) );

					num++;
					final byte flags;
					if( num == 5 )
					{
						flags = num;
						c.setCenter( te );
					}
					else
					{
						if( num == 1 || num == 3 || num == 7 || num == 9 )
						{
							flags = (byte) ( this.tqb.getCorner() | num );
						}
						else
						{
							flags = num;
						}
						c.getRing()[ringNum] = te;
						ringNum++;
					}

					te.updateStatus( c, flags, true );
				}
			}
		}
	}

	@Override
	public boolean isValidTile( final TileEntity te )
	{
		return te instanceof TileQuantumBridge;
	}

	private boolean isBlockAtLocation( final IBlockAccess w, final BlockPos pos, final IBlockDefinition def )
	{
		return def.maybeBlock().map( block -> block == w.getBlockState( pos ).getBlock() ).orElse( false );
	}
}