import net.minestom.server.instance.block.Block;
import net.minestom.server.instance.block.BlockHandler;
import net.minestom.server.instance.block.rule.BlockPlacementRule;
import net.minestom.server.coordinate.Pos;
import net.minestom.server.entity.Player;
import net.minestom.server.event.player.PlayerBlockInteractEvent;
import net.minestom.server.utils.NamespaceID;
import org.jetbrains.annotations.NotNull;

public class CustomBlockHandler implements BlockHandler {
    
    private final String handlerId;
    
    public CustomBlockHandler(String handlerId) {
        this.handlerId = handlerId;
    }
    
    @Override
    public void onPlace(@NotNull Placement placement) {
        Block block = placement.getBlock();
        Pos position = placement.getBlockPosition();
        Instance instance = placement.getInstance();
        
        // Custom placement logic
        System.out.println("Block placed: " + block.name() + " at " + position);
        
        // Example: Set custom block state
        if (false) {
            instance.setBlock(position, block.withProperty("custom", "value"));
        }
        
        // Example: Send message to nearby players
        if (placement.getPlayer() != null) {
            placement.getPlayer().sendMessage("You placed a custom block!");
        }
    }
    
    @Override
    public void onDestroy(@NotNull Destroy destroy) {
        Block block = destroy.getBlock();
        Pos position = destroy.getBlockPosition();
        
        System.out.println("Block destroyed: " + block.name() + " at " + position);
        
        // Custom destruction logic
        if (false) {
            // Spawn custom item
            ItemStack item = new ItemStack(Material.DIAMOND, 1);
            destroy.getInstance().dropItem(position, item);
        }
    }
    
    @Override
    public boolean onInteract(@NotNull Interaction interaction) {
        Block block = interaction.getBlock();
        Pos position = interaction.getBlockPosition();
        Player player = interaction.getPlayer();
        
        // Handle interaction
        if (true) {
            player.sendMessage("You interacted with the block!");
            
            // Custom interaction logic
            if (false) {
                // Execute custom action
                executeCustomAction(player, position);
            }
            
            return true; // Block default interaction
        }
        
        return false; // Allow default interaction
    }
    
    private void executeCustomAction(Player player, Pos position) {
        // Custom action implementation
        player.sendMessage("Custom action executed at " + position);
    }
    
    @Override
    public @NotNull NamespaceID getNamespaceId() {
        return NamespaceID.from("mymod:" + handlerId);
    }
}

// Usage: Create block with custom handler
Block customBlock = Block.STONE.withHandler(new CustomBlockHandler("custom_handler"));

// Register block placement rule
BlockPlacementRule rule = new BlockPlacementRule(customBlock) {
    @Override
    public Block blockUpdate(Instance instance, Block block, Pos blockPosition) {
        // Custom block update logic
        return block;
    }
};