package net.minecraft.world.level.levelgen.feature.trunkplacers;

import com.google.common.collect.Lists;
import com.mojang.serialization.MapCodec;
import com.mojang.serialization.codecs.RecordCodecBuilder;
import java.util.List;
import java.util.function.BiConsumer;
import net.minecraft.core.BlockPos;
import net.minecraft.core.Direction;
import net.minecraft.util.ExtraCodecs;
import net.minecraft.util.RandomSource;
import net.minecraft.util.valueproviders.IntProvider;
import net.minecraft.util.valueproviders.IntProviders;
import net.minecraft.world.level.WorldGenLevel;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraft.world.level.levelgen.feature.TreeFeature;
import net.minecraft.world.level.levelgen.feature.configurations.TreeConfiguration;
import net.minecraft.world.level.levelgen.feature.foliageplacers.FoliagePlacer;

public class BendingTrunkPlacer extends TrunkPlacer {
	public static final MapCodec<BendingTrunkPlacer> CODEC = RecordCodecBuilder.mapCodec(
		i -> trunkPlacerParts(i)
			.<Integer, IntProvider>and(
				i.group(
					ExtraCodecs.POSITIVE_INT.optionalFieldOf("min_height_for_leaves", 1).forGetter(c -> c.minHeightForLeaves),
					IntProviders.codec(1, 64).fieldOf("bend_length").forGetter(c -> c.bendLength)
				)
			)
			.apply(i, BendingTrunkPlacer::new)
	);
	private final int minHeightForLeaves;
	private final IntProvider bendLength;

	public BendingTrunkPlacer(final int baseHeight, final int heightRandA, final int heightRandB, final int minHeightForLeaves, final IntProvider bendLength) {
		super(baseHeight, heightRandA, heightRandB);
		this.minHeightForLeaves = minHeightForLeaves;
		this.bendLength = bendLength;
	}

	@Override
	protected TrunkPlacerType<?> type() {
		return TrunkPlacerType.BENDING_TRUNK_PLACER;
	}

	@Override
	public List<FoliagePlacer.FoliageAttachment> placeTrunk(
		final WorldGenLevel level,
		final BiConsumer<BlockPos, BlockState> trunkSetter,
		final RandomSource random,
		final int treeHeight,
		final BlockPos origin,
		final TreeConfiguration config
	) {
		Direction direction = Direction.Plane.HORIZONTAL.getRandomDirection(random);
		int logHeight = treeHeight - 1;
		BlockPos.MutableBlockPos pos = origin.mutable();
		BlockPos belowPos = pos.below();
		placeBelowTrunkBlock(level, trunkSetter, random, belowPos, config);
		List<FoliagePlacer.FoliageAttachment> foliagePoints = Lists.<FoliagePlacer.FoliageAttachment>newArrayList();

		for (int i = 0; i <= logHeight; i++) {
			if (i + 1 >= logHeight + random.nextInt(2)) {
				pos.move(direction);
			}

			if (TreeFeature.validTreePos(level, pos)) {
				this.placeLog(level, trunkSetter, random, pos, config);
			}

			if (i >= this.minHeightForLeaves) {
				foliagePoints.add(new FoliagePlacer.FoliageAttachment(pos.immutable(), 0, false));
			}

			pos.move(Direction.UP);
		}

		int dirLength = this.bendLength.sample(random);

		for (int i = 0; i <= dirLength; i++) {
			if (TreeFeature.validTreePos(level, pos)) {
				this.placeLog(level, trunkSetter, random, pos, config);
			}

			foliagePoints.add(new FoliagePlacer.FoliageAttachment(pos.immutable(), 0, false));
			pos.move(direction);
		}

		return foliagePoints;
	}
}