package net.shadowfacts.doubledoors;

import net.fabricmc.api.ModInitializer;
import net.minecraft.block.BlockState;
import net.minecraft.block.DoorBlock;
import net.minecraft.block.enums.DoorHinge;
import net.minecraft.entity.player.PlayerEntity;
import net.minecraft.util.Hand;
import net.minecraft.util.Pair;
import net.minecraft.util.hit.BlockHitResult;
import net.minecraft.util.math.BlockPos;
import net.minecraft.util.math.Direction;
import net.minecraft.world.World;

/**
 * @author shadowfacts
 */
public class DoubleDoors implements ModInitializer {
	@Override
	public void onInitialize() {

	}

	public static void onDoorActivated(BlockState newDoorState, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult result) {
		Pair<BlockPos, BlockState> opposingDoor = getOpposingDoor(newDoorState, world, pos);
		if (opposingDoor != null && opposingDoor.getRight().get(DoorBlock.OPEN) != newDoorState.get(DoorBlock.OPEN)) {
			BlockState newOpposingDoorState = opposingDoor.getRight().cycle(DoorBlock.OPEN);
			world.setBlockState(opposingDoor.getLeft(), newOpposingDoorState, 10);
		}
	}

	private static Pair<BlockPos, BlockState> getOpposingDoor(BlockState doorState, World world, BlockPos pos) {
		Direction facing = doorState.get(DoorBlock.FACING);
		DoorHinge hinge = doorState.get(DoorBlock.HINGE);
		Direction offsetDirection = hinge == DoorHinge.LEFT ? facing.rotateYClockwise() : facing.rotateYCounterclockwise();
		BlockPos opposingDoorPos = pos.offset(offsetDirection);
		BlockState possibleOpposingDoorState = world.getBlockState(opposingDoorPos);
		if (possibleOpposingDoorState.getBlock() instanceof DoorBlock && possibleOpposingDoorState.get(DoorBlock.HINGE) != doorState.get(DoorBlock.HINGE)) {
			return new Pair<>(opposingDoorPos, possibleOpposingDoorState);
		} else {
			return null;
		}
	}
}