package net.minecraft.world.level.block;

import com.mojang.serialization.MapCodec;
import java.util.function.Function;
import net.minecraft.core.BlockPos;
import net.minecraft.core.Direction;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.util.RandomSource;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.entity.InsideBlockEffectApplier;
import net.minecraft.world.entity.LivingEntity;
import net.minecraft.world.entity.monster.Ravager;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.item.context.BlockPlaceContext;
import net.minecraft.world.level.BlockGetter;
import net.minecraft.world.level.GameRules;
import net.minecraft.world.level.Level;
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.DoubleBlockHalf;
import net.minecraft.world.level.block.state.properties.EnumProperty;
import net.minecraft.world.level.block.state.properties.IntegerProperty;
import net.minecraft.world.phys.shapes.CollisionContext;
import net.minecraft.world.phys.shapes.Shapes;
import net.minecraft.world.phys.shapes.VoxelShape;
import org.jetbrains.annotations.Nullable;

public class PitcherCropBlock extends DoublePlantBlock implements BonemealableBlock {
	public static final MapCodec<PitcherCropBlock> CODEC = simpleCodec(PitcherCropBlock::new);
	public static final int MAX_AGE = 4;
	public static final IntegerProperty AGE = BlockStateProperties.AGE_4;
	public static final EnumProperty<DoubleBlockHalf> HALF = DoublePlantBlock.HALF;
	private static final int DOUBLE_PLANT_AGE_INTERSECTION = 3;
	private static final int BONEMEAL_INCREASE = 1;
	private static final VoxelShape SHAPE_BULB = Block.column(6.0, -1.0, 3.0);
	private static final VoxelShape SHAPE_CROP = Block.column(10.0, -1.0, 5.0);
	private final Function<BlockState, VoxelShape> shapes = this.makeShapes();

	@Override
	public MapCodec<PitcherCropBlock> codec() {
		return CODEC;
	}

	public PitcherCropBlock(BlockBehaviour.Properties properties) {
		super(properties);
	}

	private Function<BlockState, VoxelShape> makeShapes() {
		int[] is = new int[]{0, 9, 11, 22, 26};
		return this.getShapeForEachState(blockState -> {
			int i = (blockState.getValue(AGE) == 0 ? 4 : 6) + is[blockState.getValue(AGE)];
			int j = blockState.getValue(AGE) == 0 ? 6 : 10;

			return switch ((DoubleBlockHalf)blockState.getValue(HALF)) {
				case LOWER -> Block.column(j, -1.0, Math.min(16, -1 + i));
				case UPPER -> Block.column(j, 0.0, Math.max(0, -1 + i - 16));
			};
		});
	}

	@Nullable
	@Override
	public BlockState getStateForPlacement(BlockPlaceContext context) {
		return this.defaultBlockState();
	}

	@Override
	public VoxelShape getShape(BlockState state, BlockGetter level, BlockPos pos, CollisionContext context) {
		return (VoxelShape)this.shapes.apply(state);
	}

	@Override
	public VoxelShape getCollisionShape(BlockState state, BlockGetter level, BlockPos pos, CollisionContext context) {
		if (state.getValue(HALF) == DoubleBlockHalf.LOWER) {
			return state.getValue(AGE) == 0 ? SHAPE_BULB : SHAPE_CROP;
		} else {
			return Shapes.empty();
		}
	}

	@Override
	public BlockState updateShape(
		BlockState state,
		LevelReader level,
		ScheduledTickAccess scheduledTickAccess,
		BlockPos pos,
		Direction direction,
		BlockPos neighborPos,
		BlockState neighborState,
		RandomSource random
	) {
		if (isDouble((Integer)state.getValue(AGE))) {
			return super.updateShape(state, level, scheduledTickAccess, pos, direction, neighborPos, neighborState, random);
		} else {
			return state.canSurvive(level, pos) ? state : Blocks.AIR.defaultBlockState();
		}
	}

	@Override
	public boolean canSurvive(BlockState state, LevelReader level, BlockPos pos) {
		return isLower(state) && !sufficientLight(level, pos) ? false : super.canSurvive(state, level, pos);
	}

	@Override
	protected boolean mayPlaceOn(BlockState state, BlockGetter level, BlockPos pos) {
		return state.is(Blocks.FARMLAND);
	}

	@Override
	protected void createBlockStateDefinition(Builder<Block, BlockState> builder) {
		builder.add(AGE);
		super.createBlockStateDefinition(builder);
	}

	@Override
	public void entityInside(BlockState state, Level level, BlockPos pos, Entity entity, InsideBlockEffectApplier effectApplier) {
		if (level instanceof ServerLevel serverLevel && entity instanceof Ravager && serverLevel.getGameRules().getBoolean(GameRules.RULE_MOBGRIEFING)) {
			serverLevel.destroyBlock(pos, true, entity);
		}
	}

	@Override
	public boolean canBeReplaced(BlockState state, BlockPlaceContext useContext) {
		return false;
	}

	@Override
	public void setPlacedBy(Level level, BlockPos pos, BlockState state, LivingEntity placer, ItemStack stack) {
	}

	@Override
	public boolean isRandomlyTicking(BlockState state) {
		return state.getValue(HALF) == DoubleBlockHalf.LOWER && !this.isMaxAge(state);
	}

	@Override
	public void randomTick(BlockState state, ServerLevel level, BlockPos pos, RandomSource random) {
		float f = CropBlock.getGrowthSpeed(this, level, pos);
		boolean bl = random.nextInt((int)(25.0F / f) + 1) == 0;
		if (bl) {
			this.grow(level, state, pos, 1);
		}
	}

	private void grow(ServerLevel level, BlockState state, BlockPos pos, int ageIncrement) {
		int i = Math.min((Integer)state.getValue(AGE) + ageIncrement, 4);
		if (this.canGrow(level, pos, state, i)) {
			BlockState blockState = state.setValue(AGE, i);
			level.setBlock(pos, blockState, 2);
			if (isDouble(i)) {
				level.setBlock(pos.above(), blockState.setValue(HALF, DoubleBlockHalf.UPPER), 3);
			}
		}
	}

	private static boolean canGrowInto(LevelReader level, BlockPos pos) {
		BlockState blockState = level.getBlockState(pos);
		return blockState.isAir() || blockState.is(Blocks.PITCHER_CROP);
	}

	private static boolean sufficientLight(LevelReader level, BlockPos pos) {
		return CropBlock.hasSufficientLight(level, pos);
	}

	private static boolean isLower(BlockState state) {
		return state.is(Blocks.PITCHER_CROP) && state.getValue(HALF) == DoubleBlockHalf.LOWER;
	}

	private static boolean isDouble(int age) {
		return age >= 3;
	}

	private boolean canGrow(LevelReader reader, BlockPos pos, BlockState state, int age) {
		return !this.isMaxAge(state) && sufficientLight(reader, pos) && (!isDouble(age) || canGrowInto(reader, pos.above()));
	}

	private boolean isMaxAge(BlockState state) {
		return (Integer)state.getValue(AGE) >= 4;
	}

	@Nullable
	private PitcherCropBlock.PosAndState getLowerHalf(LevelReader level, BlockPos pos, BlockState state) {
		if (isLower(state)) {
			return new PitcherCropBlock.PosAndState(pos, state);
		} else {
			BlockPos blockPos = pos.below();
			BlockState blockState = level.getBlockState(blockPos);
			return isLower(blockState) ? new PitcherCropBlock.PosAndState(blockPos, blockState) : null;
		}
	}

	@Override
	public boolean isValidBonemealTarget(LevelReader level, BlockPos pos, BlockState state) {
		PitcherCropBlock.PosAndState posAndState = this.getLowerHalf(level, pos, state);
		return posAndState == null ? false : this.canGrow(level, posAndState.pos, posAndState.state, (Integer)posAndState.state.getValue(AGE) + 1);
	}

	@Override
	public boolean isBonemealSuccess(Level level, RandomSource random, BlockPos pos, BlockState state) {
		return true;
	}

	@Override
	public void performBonemeal(ServerLevel level, RandomSource random, BlockPos pos, BlockState state) {
		PitcherCropBlock.PosAndState posAndState = this.getLowerHalf(level, pos, state);
		if (posAndState != null) {
			this.grow(level, posAndState.state, posAndState.pos, 1);
		}
	}

	record PosAndState(BlockPos pos, BlockState state) {
	}
}