package appeng.fluids.parts;


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

import net.minecraft.block.Block;
import net.minecraft.block.BlockLiquid;
import net.minecraft.block.state.IBlockState;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.EnumHand;
import net.minecraft.util.math.BlockPos;
import net.minecraft.util.math.Vec3d;
import net.minecraft.world.World;
import net.minecraftforge.fluids.Fluid;
import net.minecraftforge.fluids.FluidStack;
import net.minecraftforge.fluids.FluidTank;
import net.minecraftforge.fluids.FluidUtil;
import net.minecraftforge.fluids.IFluidBlock;

import appeng.api.AEApi;
import appeng.api.config.AccessRestriction;
import appeng.api.config.Actionable;
import appeng.api.config.IncludeExclude;
import appeng.api.config.Upgrades;
import appeng.api.networking.events.MENetworkCellArrayUpdate;
import appeng.api.networking.events.MENetworkChannelsChanged;
import appeng.api.networking.events.MENetworkEventSubscribe;
import appeng.api.networking.events.MENetworkPowerStatusChange;
import appeng.api.networking.security.IActionSource;
import appeng.api.parts.IPartModel;
import appeng.api.storage.IMEInventoryHandler;
import appeng.api.storage.IStorageChannel;
import appeng.api.storage.channels.IFluidStorageChannel;
import appeng.api.storage.data.IAEFluidStack;
import appeng.api.storage.data.IItemList;
import appeng.api.util.AEPartLocation;
import appeng.core.sync.GuiBridge;
import appeng.fluids.util.AEFluidInventory;
import appeng.fluids.util.IAEFluidInventory;
import appeng.fluids.util.IAEFluidTank;
import appeng.items.parts.PartModels;
import appeng.me.GridAccessException;
import appeng.me.storage.MEInventoryHandler;
import appeng.parts.automation.PartAbstractFormationPlane;
import appeng.parts.automation.PlaneModels;
import appeng.util.Platform;
import appeng.util.prioritylist.PrecisePriorityList;


public class PartFluidFormationPlane extends PartAbstractFormationPlane<IAEFluidStack> implements IAEFluidInventory
{
	private static final PlaneModels MODELS = new PlaneModels( "part/fluid_formation_plane_", "part/fluid_formation_plane_on_" );

	@PartModels
	public static List<IPartModel> getModels()
	{
		return MODELS.getModels();
	}

	private final MEInventoryHandler<IAEFluidStack> myHandler = new MEInventoryHandler<>( this, AEApi.instance()
			.storage()
			.getStorageChannel( IFluidStorageChannel.class ) );
	private final AEFluidInventory config = new AEFluidInventory( this, 63 );

	public PartFluidFormationPlane( final ItemStack is )
	{
		super( is );
		this.updateHandler();
	}

	@Override
	protected void updateHandler()
	{
		this.myHandler.setBaseAccess( AccessRestriction.WRITE );
		this.myHandler.setWhitelist( this.getInstalledUpgrades( Upgrades.INVERTER ) > 0 ? IncludeExclude.BLACKLIST : IncludeExclude.WHITELIST );
		this.myHandler.setPriority( this.getPriority() );

		final IItemList<IAEFluidStack> priorityList = AEApi.instance().storage().getStorageChannel( IFluidStorageChannel.class ).createList();

		final int slotsToUse = 18 + this.getInstalledUpgrades( Upgrades.CAPACITY ) * 9;
		for( int x = 0; x < this.config.getSlots() && x < slotsToUse; x++ )
		{
			final IAEFluidStack is = this.config.getFluidInSlot( x );
			if( is != null )
			{
				priorityList.add( is );
			}
		}
		this.myHandler.setPartitionList( new PrecisePriorityList<IAEFluidStack>( priorityList ) );

		try
		{
			this.getProxy().getGrid().postEvent( new MENetworkCellArrayUpdate() );
		}
		catch( final GridAccessException e )
		{
			// :P
		}
	}

	@Override
	public IAEFluidStack injectItems( IAEFluidStack input, Actionable type, IActionSource src )
	{
		if( this.blocked || input == null || input.getStackSize() < Fluid.BUCKET_VOLUME )
		{
			// need a full bucket
			return input;
		}

		final TileEntity te = this.getHost().getTile();
		final World w = te.getWorld();
		final AEPartLocation side = this.getSide();
		final BlockPos pos = te.getPos().offset( side.getFacing() );
		final IBlockState state = w.getBlockState( pos );

		if( this.canReplace( w, state, state.getBlock(), pos ) )
		{
			if( type == Actionable.MODULATE )
			{
				final FluidStack fs = input.getFluidStack();
				fs.amount = Fluid.BUCKET_VOLUME;

				final FluidTank tank = new FluidTank( fs, Fluid.BUCKET_VOLUME );
				if( !FluidUtil.tryPlaceFluid( null, w, pos, tank, fs ) )
				{
					return input;
				}
			}
			final IAEFluidStack ret = input.copy();
			ret.setStackSize( input.getStackSize() - Fluid.BUCKET_VOLUME );
			return ret.getStackSize() == 0 ? null : ret;
		}
		this.blocked = true;
		return input;
	}

	private boolean canReplace( World w, IBlockState state, Block block, BlockPos pos )
	{
		return block.isReplaceable( w, pos ) && !( block instanceof IFluidBlock ) && !( block instanceof BlockLiquid ) && !state.getMaterial().isLiquid();
	}

	@Override
	public void onFluidInventoryChanged( IAEFluidTank inv, int slot )
	{
		if( inv == this.config )
		{
			this.updateHandler();
		}
	}

	@Override
	public void readFromNBT( final NBTTagCompound data )
	{
		super.readFromNBT( data );
		this.config.readFromNBT( data, "config" );
		this.updateHandler();
	}

	@Override
	public void writeToNBT( final NBTTagCompound data )
	{
		super.writeToNBT( data );
		this.config.writeToNBT( data, "config" );
	}

	@Override
	@MENetworkEventSubscribe
	public void powerRender( final MENetworkPowerStatusChange c )
	{
		this.stateChanged();
	}

	@MENetworkEventSubscribe
	public void updateChannels( final MENetworkChannelsChanged changedChannels )
	{
		this.stateChanged();
	}

	@Override
	public boolean onPartActivate( final EntityPlayer player, final EnumHand hand, final Vec3d pos )
	{
		if( Platform.isServer() )
		{
			Platform.openGUI( player, this.getHost().getTile(), this.getSide(), GuiBridge.GUI_FLUID_FORMATION_PLANE );
		}

		return true;
	}

	@Override
	public IStorageChannel<IAEFluidStack> getChannel()
	{
		return AEApi.instance().storage().getStorageChannel( IFluidStorageChannel.class );
	}

	@Override
	public List<IMEInventoryHandler> getCellArray( final IStorageChannel channel )
	{
		if( this.getProxy().isActive() && channel == AEApi.instance().storage().getStorageChannel( IFluidStorageChannel.class ) )
		{
			final List<IMEInventoryHandler> handler = new ArrayList<>( 1 );
			handler.add( this.myHandler );
			return handler;
		}
		return Collections.emptyList();
	}

	@Override
	public IPartModel getStaticModels()
	{
		return MODELS.getModel( this.getConnections(), this.isPowered(), this.isActive() );
	}

	public IAEFluidTank getConfig()
	{
		return this.config;
	}

	@Override
	public ItemStack getItemStackRepresentation()
	{
		return AEApi.instance().definitions().parts().fluidFormationnPlane().maybeStack( 1 ).orElse( ItemStack.EMPTY );
	}

	@Override
	public GuiBridge getGuiBridge()
	{
		return GuiBridge.GUI_FLUID_FORMATION_PLANE;
	}
}