package com.alttd.custommobs.utility;

import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.block.BlockFace;
import org.bukkit.entity.Player;
import org.bukkit.util.BlockIterator;

import java.util.Optional;

public class SpawnableTargetBlock {

    public Optional<Location> getSpawnableTargetBlock(Player player, int maxDistance) {
        BlockIterator iter = new BlockIterator(player, maxDistance);
        while (iter.hasNext()) {
            Block block = iter.next();
            if (isSpawnable(block)) {
                return Optional.of(block.getLocation().add(0, 1, 0));
            }
        }
        return Optional.empty();
    }

    private boolean isSpawnable(Block block) {
        Material material = block.getType();

        if (material == Material.AIR) {
            return false;
        }

        Block blockAbove = block.getRelative(BlockFace.UP);
        if (blockAbove.getType() != Material.AIR) {
            return false;
        }

        return block.getType().isSolid();
    }
}