package net.minecraft.world.level.block.piston;

import com.mojang.serialization.MapCodec;
import java.util.Arrays;
import net.minecraft.core.BlockPos;
import net.minecraft.core.Direction;
import net.minecraft.world.entity.player.Player;
import net.minecraft.world.item.ItemStack;
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.block.Block;
import net.minecraft.world.level.block.Blocks;
import net.minecraft.world.level.block.DirectionalBlock;
import net.minecraft.world.level.block.Mirror;
import net.minecraft.world.level.block.Rotation;
import net.minecraft.world.level.block.state.BlockBehaviour;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraft.world.level.block.state.StateDefinition;
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.EnumProperty;
import net.minecraft.world.level.block.state.properties.PistonType;
import net.minecraft.world.level.pathfinder.PathComputationType;
import net.minecraft.world.phys.shapes.CollisionContext;
import net.minecraft.world.phys.shapes.Shapes;
import net.minecraft.world.phys.shapes.VoxelShape;

public class PistonHeadBlock extends DirectionalBlock {
	public static final MapCodec<PistonHeadBlock> CODEC = simpleCodec(PistonHeadBlock::new);
	public static final EnumProperty<PistonType> TYPE = BlockStateProperties.PISTON_TYPE;
	public static final BooleanProperty SHORT = BlockStateProperties.SHORT;
	public static final float PLATFORM = 4.0F;
	protected static final VoxelShape EAST_AABB = Block.box(12.0, 0.0, 0.0, 16.0, 16.0, 16.0);
	protected static final VoxelShape WEST_AABB = Block.box(0.0, 0.0, 0.0, 4.0, 16.0, 16.0);
	protected static final VoxelShape SOUTH_AABB = Block.box(0.0, 0.0, 12.0, 16.0, 16.0, 16.0);
	protected static final VoxelShape NORTH_AABB = Block.box(0.0, 0.0, 0.0, 16.0, 16.0, 4.0);
	protected static final VoxelShape UP_AABB = Block.box(0.0, 12.0, 0.0, 16.0, 16.0, 16.0);
	protected static final VoxelShape DOWN_AABB = Block.box(0.0, 0.0, 0.0, 16.0, 4.0, 16.0);
	protected static final float AABB_OFFSET = 2.0F;
	protected static final float EDGE_MIN = 6.0F;
	protected static final float EDGE_MAX = 10.0F;
	protected static final VoxelShape UP_ARM_AABB = Block.box(6.0, -4.0, 6.0, 10.0, 12.0, 10.0);
	protected static final VoxelShape DOWN_ARM_AABB = Block.box(6.0, 4.0, 6.0, 10.0, 20.0, 10.0);
	protected static final VoxelShape SOUTH_ARM_AABB = Block.box(6.0, 6.0, -4.0, 10.0, 10.0, 12.0);
	protected static final VoxelShape NORTH_ARM_AABB = Block.box(6.0, 6.0, 4.0, 10.0, 10.0, 20.0);
	protected static final VoxelShape EAST_ARM_AABB = Block.box(-4.0, 6.0, 6.0, 12.0, 10.0, 10.0);
	protected static final VoxelShape WEST_ARM_AABB = Block.box(4.0, 6.0, 6.0, 20.0, 10.0, 10.0);
	protected static final VoxelShape SHORT_UP_ARM_AABB = Block.box(6.0, 0.0, 6.0, 10.0, 12.0, 10.0);
	protected static final VoxelShape SHORT_DOWN_ARM_AABB = Block.box(6.0, 4.0, 6.0, 10.0, 16.0, 10.0);
	protected static final VoxelShape SHORT_SOUTH_ARM_AABB = Block.box(6.0, 6.0, 0.0, 10.0, 10.0, 12.0);
	protected static final VoxelShape SHORT_NORTH_ARM_AABB = Block.box(6.0, 6.0, 4.0, 10.0, 10.0, 16.0);
	protected static final VoxelShape SHORT_EAST_ARM_AABB = Block.box(0.0, 6.0, 6.0, 12.0, 10.0, 10.0);
	protected static final VoxelShape SHORT_WEST_ARM_AABB = Block.box(4.0, 6.0, 6.0, 16.0, 10.0, 10.0);
	private static final VoxelShape[] SHAPES_SHORT = makeShapes(true);
	private static final VoxelShape[] SHAPES_LONG = makeShapes(false);

	@Override
	protected MapCodec<PistonHeadBlock> codec() {
		return CODEC;
	}

	private static VoxelShape[] makeShapes(boolean extended) {
		return (VoxelShape[])Arrays.stream(Direction.values()).map(direction -> calculateShape(direction, extended)).toArray(VoxelShape[]::new);
	}

	private static VoxelShape calculateShape(Direction direction, boolean shortArm) {
		switch (direction) {
			case DOWN:
			default:
				return Shapes.or(DOWN_AABB, shortArm ? SHORT_DOWN_ARM_AABB : DOWN_ARM_AABB);
			case UP:
				return Shapes.or(UP_AABB, shortArm ? SHORT_UP_ARM_AABB : UP_ARM_AABB);
			case NORTH:
				return Shapes.or(NORTH_AABB, shortArm ? SHORT_NORTH_ARM_AABB : NORTH_ARM_AABB);
			case SOUTH:
				return Shapes.or(SOUTH_AABB, shortArm ? SHORT_SOUTH_ARM_AABB : SOUTH_ARM_AABB);
			case WEST:
				return Shapes.or(WEST_AABB, shortArm ? SHORT_WEST_ARM_AABB : WEST_ARM_AABB);
			case EAST:
				return Shapes.or(EAST_AABB, shortArm ? SHORT_EAST_ARM_AABB : EAST_ARM_AABB);
		}
	}

	public PistonHeadBlock(BlockBehaviour.Properties properties) {
		super(properties);
		this.registerDefaultState(this.stateDefinition.any().setValue(FACING, Direction.NORTH).setValue(TYPE, PistonType.DEFAULT).setValue(SHORT, false));
	}

	@Override
	protected boolean useShapeForLightOcclusion(BlockState state) {
		return true;
	}

	@Override
	protected VoxelShape getShape(BlockState state, BlockGetter level, BlockPos pos, CollisionContext context) {
		return (state.getValue(SHORT) ? SHAPES_SHORT : SHAPES_LONG)[((Direction)state.getValue(FACING)).ordinal()];
	}

	private boolean isFittingBase(BlockState baseState, BlockState extendedState) {
		Block block = baseState.getValue(TYPE) == PistonType.DEFAULT ? Blocks.PISTON : Blocks.STICKY_PISTON;
		return extendedState.is(block) && (Boolean)extendedState.getValue(PistonBaseBlock.EXTENDED) && extendedState.getValue(FACING) == baseState.getValue(FACING);
	}

	@Override
	public BlockState playerWillDestroy(Level level, BlockPos pos, BlockState state, Player player) {
		if (!level.isClientSide && player.getAbilities().instabuild) {
			BlockPos blockPos = pos.relative(((Direction)state.getValue(FACING)).getOpposite());
			if (this.isFittingBase(state, level.getBlockState(blockPos))) {
				level.destroyBlock(blockPos, false);
			}
		}

		return super.playerWillDestroy(level, pos, state, player);
	}

	@Override
	protected void onRemove(BlockState state, Level level, BlockPos pos, BlockState newState, boolean movedByPiston) {
		if (!state.is(newState.getBlock())) {
			super.onRemove(state, level, pos, newState, movedByPiston);
			BlockPos blockPos = pos.relative(((Direction)state.getValue(FACING)).getOpposite());
			if (this.isFittingBase(state, level.getBlockState(blockPos))) {
				level.destroyBlock(blockPos, true);
			}
		}
	}

	@Override
	protected BlockState updateShape(BlockState state, Direction direction, BlockState neighborState, LevelAccessor level, BlockPos pos, BlockPos neighborPos) {
		return direction.getOpposite() == state.getValue(FACING) && !state.canSurvive(level, pos)
			? Blocks.AIR.defaultBlockState()
			: super.updateShape(state, direction, neighborState, level, pos, neighborPos);
	}

	@Override
	protected boolean canSurvive(BlockState state, LevelReader level, BlockPos pos) {
		BlockState blockState = level.getBlockState(pos.relative(((Direction)state.getValue(FACING)).getOpposite()));
		return this.isFittingBase(state, blockState) || blockState.is(Blocks.MOVING_PISTON) && blockState.getValue(FACING) == state.getValue(FACING);
	}

	@Override
	protected void neighborChanged(BlockState state, Level level, BlockPos pos, Block neighborBlock, BlockPos neighborPos, boolean movedByPiston) {
		if (state.canSurvive(level, pos)) {
			level.neighborChanged(pos.relative(((Direction)state.getValue(FACING)).getOpposite()), neighborBlock, neighborPos);
		}
	}

	@Override
	public ItemStack getCloneItemStack(LevelReader level, BlockPos pos, BlockState state) {
		return new ItemStack(state.getValue(TYPE) == PistonType.STICKY ? Blocks.STICKY_PISTON : Blocks.PISTON);
	}

	@Override
	protected BlockState rotate(BlockState state, Rotation rotation) {
		return state.setValue(FACING, rotation.rotate(state.getValue(FACING)));
	}

	@Override
	protected BlockState mirror(BlockState state, Mirror mirror) {
		return state.rotate(mirror.getRotation(state.getValue(FACING)));
	}

	@Override
	protected void createBlockStateDefinition(StateDefinition.Builder<Block, BlockState> builder) {
		builder.add(FACING, TYPE, SHORT);
	}

	@Override
	protected boolean isPathfindable(BlockState state, PathComputationType pathComputationType) {
		return false;
	}
}