/*
 * Minecraft Forge
 * Copyright (c) 2016-2019.
 *
 * This library 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 version 2.1
 * of the License.
 *
 * This library 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 this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

package net.minecraftforge.fluids.capability;

import net.minecraft.nbt.CompoundNBT;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.tileentity.TileEntityType;
import net.minecraft.util.Direction;
import net.minecraftforge.common.capabilities.Capability;
import net.minecraftforge.common.util.LazyOptional;
import net.minecraftforge.fluids.FluidAttributes;
import net.minecraftforge.fluids.capability.templates.FluidTank;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;

public class TileFluidHandler extends TileEntity
{
    protected FluidTank tank = new FluidTank(FluidAttributes.BUCKET_VOLUME);
    
    private final LazyOptional<IFluidHandler> holder = LazyOptional.of(() -> tank);

    public TileFluidHandler(@Nonnull TileEntityType<?> tileEntityTypeIn)
    {
        super(tileEntityTypeIn);
    }

    @Override
    public void read(CompoundNBT tag)
    {
        super.read(tag);
        tank.readFromNBT(tag);
    }

    @Override
    public CompoundNBT write(CompoundNBT tag)
    {
        tag = super.write(tag);
        tank.writeToNBT(tag);
        return tag;
    }

    @Override
    @Nonnull
    public <T> LazyOptional<T> getCapability(@Nonnull Capability<T> capability, @Nullable Direction facing)
    {
        if (capability == CapabilityFluidHandler.FLUID_HANDLER_CAPABILITY)
            return holder.cast();
        return super.getCapability(capability, facing);
    }
}