/*
 * 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.tile.grindstone;


import java.util.Collections;
import java.util.List;

import io.netty.buffer.ByteBuf;

import net.minecraft.block.state.IBlockState;
import net.minecraft.entity.Entity;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.ITickable;
import net.minecraft.util.math.AxisAlignedBB;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;

import appeng.api.implementations.tiles.ICrankable;
import appeng.helpers.ICustomCollision;
import appeng.tile.AEBaseTile;
import appeng.tile.TileEvent;
import appeng.tile.events.TileEventType;
import appeng.util.Platform;


public class TileCrank extends AEBaseTile implements ICustomCollision, ITickable
{

	private final int ticksPerRotation = 18;

	// sided values..
	private float visibleRotation = 0;
	private int charge = 0;

	private int hits = 0;
	private int rotation = 0;

	@Override
	public void update()
	{
		if( this.rotation > 0 )
		{
			this.setVisibleRotation( this.getVisibleRotation() - 360 / ( this.ticksPerRotation ) );
			this.charge++;
			if( this.charge >= this.ticksPerRotation )
			{
				this.charge -= this.ticksPerRotation;
				final ICrankable g = this.getGrinder();
				if( g != null )
				{
					g.applyTurn();
				}
			}

			this.rotation--;
		}
	}

	private ICrankable getGrinder()
	{
		if( Platform.isClient() )
		{
			return null;
		}

		final EnumFacing grinder = this.getUp().getOpposite();
		final TileEntity te = this.worldObj.getTileEntity( this.pos.offset( grinder ) );
		if( te instanceof ICrankable )
		{
			return (ICrankable) te;
		}
		return null;
	}

	@TileEvent( TileEventType.NETWORK_READ )
	public boolean readFromStream_TileCrank( final ByteBuf data )
	{
		this.rotation = data.readInt();
		return false;
	}

	@TileEvent( TileEventType.NETWORK_WRITE )
	public void writeToStream_TileCrank( final ByteBuf data )
	{
		data.writeInt( this.rotation );
	}

	@Override
	public void setOrientation( final EnumFacing inForward, final EnumFacing inUp )
	{
		super.setOrientation( inForward, inUp );
		final IBlockState state = this.worldObj.getBlockState( this.pos );
		this.getBlockType().neighborChanged( state, this.worldObj, this.pos, state.getBlock() );
	}

	@Override
	public boolean requiresTESR()
	{
		return true;
	}

	/**
	 * return true if this should count towards stats.
	 */
	public boolean power()
	{
		if( Platform.isClient() )
		{
			return false;
		}

		if( this.rotation < 3 )
		{
			final ICrankable g = this.getGrinder();
			if( g != null )
			{
				if( g.canTurn() )
				{
					this.hits = 0;
					this.rotation += this.ticksPerRotation;
					this.markForUpdate();
					return true;
				}
				else
				{
					this.hits++;
					if( this.hits > 10 )
					{
						this.worldObj.destroyBlock( this.pos, false );
					}
				}
			}
		}

		return false;
	}

	@Override
	public Iterable<AxisAlignedBB> getSelectedBoundingBoxesFromPool( final World w, final BlockPos pos, final Entity thePlayer, final boolean b )
	{
		final double xOff = -0.15 * this.getUp().getFrontOffsetX();
		final double yOff = -0.15 * this.getUp().getFrontOffsetY();
		final double zOff = -0.15 * this.getUp().getFrontOffsetZ();
		return Collections.singletonList( new AxisAlignedBB( xOff + 0.15, yOff + 0.15, zOff + 0.15, xOff + 0.85, yOff + 0.85, zOff + 0.85 ) );
	}

	@Override
	public void addCollidingBlockToList( final World w, final BlockPos pos, final AxisAlignedBB bb, final List<AxisAlignedBB> out, final Entity e )
	{
		final double xOff = -0.15 * this.getUp().getFrontOffsetX();
		final double yOff = -0.15 * this.getUp().getFrontOffsetY();
		final double zOff = -0.15 * this.getUp().getFrontOffsetZ();
		out.add( new AxisAlignedBB( xOff + 0.15, yOff + 0.15, zOff + 0.15,// ahh
				xOff + 0.85, yOff + 0.85, zOff + 0.85 ) );
	}

	public float getVisibleRotation()
	{
		return this.visibleRotation;
	}

	private void setVisibleRotation( final float visibleRotation )
	{
		this.visibleRotation = visibleRotation;
	}
}