package net.minecraft.world.level.block;

import com.mojang.serialization.MapCodec;
import java.util.OptionalInt;
import net.minecraft.core.BlockPos;
import net.minecraft.core.Direction;
import net.minecraft.core.BlockPos.MutableBlockPos;
import net.minecraft.core.particles.ParticleTypes;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.tags.BlockTags;
import net.minecraft.util.ParticleUtils;
import net.minecraft.util.RandomSource;
import net.minecraft.world.item.context.BlockPlaceContext;
import net.minecraft.world.level.BlockGetter;
import net.minecraft.world.level.Level;
import net.minecraft.world.level.LevelAccessor;
import net.minecraft.world.level.LevelReader;
import net.minecraft.world.level.ScheduledTickAccess;
import net.minecraft.world.level.block.state.BlockBehaviour;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraft.world.level.block.state.StateDefinition.Builder;
import net.minecraft.world.level.block.state.properties.BlockStateProperties;
import net.minecraft.world.level.block.state.properties.BooleanProperty;
import net.minecraft.world.level.block.state.properties.IntegerProperty;
import net.minecraft.world.level.material.FluidState;
import net.minecraft.world.level.material.Fluids;
import net.minecraft.world.phys.shapes.Shapes;
import net.minecraft.world.phys.shapes.VoxelShape;

public abstract class LeavesBlock extends Block implements SimpleWaterloggedBlock {
	public static final int DECAY_DISTANCE = 7;
	public static final IntegerProperty DISTANCE = BlockStateProperties.DISTANCE;
	public static final BooleanProperty PERSISTENT = BlockStateProperties.PERSISTENT;
	public static final BooleanProperty WATERLOGGED = BlockStateProperties.WATERLOGGED;
	protected final float leafParticleChance;
	private static final int TICK_DELAY = 1;
	private static volatile boolean cutoutLeaves = true;

	@Override
	public abstract MapCodec<? extends LeavesBlock> codec();

	public LeavesBlock(final float leafParticleChance, final BlockBehaviour.Properties properties) {
		super(properties);
		this.leafParticleChance = leafParticleChance;
		this.registerDefaultState(this.stateDefinition.any().setValue(DISTANCE, 7).setValue(PERSISTENT, false).setValue(WATERLOGGED, false));
	}

	@Override
	protected boolean skipRendering(final BlockState state, final BlockState neighborState, final Direction direction) {
		return !cutoutLeaves && neighborState.getBlock() instanceof LeavesBlock ? true : super.skipRendering(state, neighborState, direction);
	}

	public static void setCutoutLeaves(final boolean cutoutLeaves) {
		LeavesBlock.cutoutLeaves = cutoutLeaves;
	}

	@Override
	protected VoxelShape getBlockSupportShape(final BlockState state, final BlockGetter level, final BlockPos pos) {
		return Shapes.empty();
	}

	@Override
	protected boolean isRandomlyTicking(final BlockState state) {
		return (Integer)state.getValue(DISTANCE) == 7 && !(Boolean)state.getValue(PERSISTENT);
	}

	@Override
	protected void randomTick(final BlockState state, final ServerLevel level, final BlockPos pos, final RandomSource random) {
		if (this.decaying(state)) {
			dropResources(state, level, pos);
			level.removeBlock(pos, false);
		}
	}

	protected boolean decaying(final BlockState state) {
		return !(Boolean)state.getValue(PERSISTENT) && (Integer)state.getValue(DISTANCE) == 7;
	}

	@Override
	protected void tick(final BlockState state, final ServerLevel level, final BlockPos pos, final RandomSource random) {
		level.setBlock(pos, updateDistance(state, level, pos), 3);
	}

	@Override
	protected int getLightDampening(final BlockState state) {
		return 1;
	}

	@Override
	protected BlockState updateShape(
		final BlockState state,
		final LevelReader level,
		final ScheduledTickAccess ticks,
		final BlockPos pos,
		final Direction directionToNeighbour,
		final BlockPos neighbourPos,
		final BlockState neighbourState,
		final RandomSource random
	) {
		if ((Boolean)state.getValue(WATERLOGGED)) {
			ticks.scheduleTick(pos, Fluids.WATER, Fluids.WATER.getTickDelay(level));
		}

		int distanceFromNeighbor = getDistanceAt(neighbourState) + 1;
		if (distanceFromNeighbor != 1 || (Integer)state.getValue(DISTANCE) != distanceFromNeighbor) {
			ticks.scheduleTick(pos, this, 1);
		}

		return state;
	}

	private static BlockState updateDistance(final BlockState state, final LevelAccessor level, final BlockPos pos) {
		int newDistance = 7;
		MutableBlockPos neighborPos = new MutableBlockPos();

		for (Direction direction : Direction.values()) {
			neighborPos.setWithOffset(pos, direction);
			newDistance = Math.min(newDistance, getDistanceAt(level.getBlockState(neighborPos)) + 1);
			if (newDistance == 1) {
				break;
			}
		}

		return state.setValue(DISTANCE, newDistance);
	}

	private static int getDistanceAt(final BlockState state) {
		return getOptionalDistanceAt(state).orElse(7);
	}

	public static OptionalInt getOptionalDistanceAt(final BlockState state) {
		if (state.is(BlockTags.PREVENTS_NEARBY_LEAF_DECAY)) {
			return OptionalInt.of(0);
		} else {
			return state.hasProperty(DISTANCE) ? OptionalInt.of((Integer)state.getValue(DISTANCE)) : OptionalInt.empty();
		}
	}

	@Override
	protected FluidState getFluidState(final BlockState state) {
		return state.getValue(WATERLOGGED) ? Fluids.WATER.getSource(false) : super.getFluidState(state);
	}

	@Override
	public void animateTick(final BlockState state, final Level level, final BlockPos pos, final RandomSource random) {
		super.animateTick(state, level, pos, random);
		BlockPos below = pos.below();
		BlockState belowState = level.getBlockState(below);
		makeDrippingWaterParticles(level, pos, random, belowState, below);
		this.makeFallingLeavesParticles(level, pos, random, belowState, below);
	}

	private static void makeDrippingWaterParticles(
		final Level level, final BlockPos pos, final RandomSource random, final BlockState belowState, final BlockPos below
	) {
		if (level.isRainingAt(pos.above())) {
			if (random.nextInt(15) == 1) {
				if (!belowState.canOcclude() || !belowState.isFaceSturdy(level, below, Direction.UP)) {
					ParticleUtils.spawnParticleBelow(level, pos, random, ParticleTypes.DRIPPING_WATER);
				}
			}
		}
	}

	private void makeFallingLeavesParticles(final Level level, final BlockPos pos, final RandomSource random, final BlockState belowState, final BlockPos below) {
		if (!(random.nextFloat() >= this.leafParticleChance)) {
			if (!isFaceFull(belowState.getCollisionShape(level, below), Direction.UP)) {
				this.spawnFallingLeavesParticle(level, pos, random);
			}
		}
	}

	protected abstract void spawnFallingLeavesParticle(Level level, BlockPos pos, RandomSource random);

	@Override
	protected void createBlockStateDefinition(final Builder<Block, BlockState> builder) {
		builder.add(DISTANCE, PERSISTENT, WATERLOGGED);
	}

	@Override
	public BlockState getStateForPlacement(final BlockPlaceContext context) {
		FluidState replacedFluidState = context.getLevel().getFluidState(context.getClickedPos());
		BlockState state = this.defaultBlockState().setValue(PERSISTENT, true).setValue(WATERLOGGED, replacedFluidState.is(Fluids.WATER));
		return updateDistance(state, context.getLevel(), context.getClickedPos());
	}
}