public class BlockListener implements Listener {
    private ESIsland plugin;

    public BlockListener(ESIsland plugin) {
        this.plugin = plugin;
    }

    @EventHandler(priority = EventPriority.LOWEST)
    public void onBlockBreak(BlockBreakEvent event) {
        Location location = event.getBlock().getLocation();
        if (!location.getWorld().equals(Values.ISLAND_WORLD)) {
            return;
        }

        Island island = plugin.getIslandManager().getIsland(location);
        if (island == null) {
            event.setCancelled(true);
            event.getPlayer().sendMessage("§cIsland protected");
            return;
        }

        if (island.getValue(Island.Flag.ALLOW_BUILD).equals(Island.Value.PRIVATE)) {
            if (!event.getPlayer().getUniqueId().equals(island.getOwner().getUniqueId())) {
                event.setCancelled(true);
                event.getPlayer().sendMessage("§cIsland protected");
            }
        } else if (island.getValue(Island.Flag.ALLOW_BUILD).equals(Island.Value.FRIENDS)) {
            if (!(event.getPlayer().getUniqueId().equals(island.getOwner().getUniqueId()) /* || check friends */)) {
                event.setCancelled(true);
                event.getPlayer().sendMessage("§cIsland protected");
            }
        }
    }
}