public class HologramHelper {

    private CuboidsPlugin plugin;

    public HologramHelper(CuboidsPlugin plugin) {
        this.plugin = plugin;
    }

    public void update(Cuboid c) {
        for (Hologram hologram : HologramsAPI.getHolograms(CuboidsPlugin.getInstance())) if (plugin.getCuboidManager().get(hologram.getLocation()).equals(c.getRegion().getLocation().add(0.5, 2, 0.5))) hologram.delete();
        Location location = new Location(Bukkit.getWorld("world"), c.getRegion().getX() + 0.5, c.getRegion().getLocation().getBlockY() + 2, c.getRegion().getZ() + 0.5);
        Hologram hologram = HologramsAPI.createHologram(plugin, location);
        double required_progress = ConfigSettings.CUBOIDS_START_HP;
        double current_progress = c.getHp();
        double progress_percentage = current_progress/required_progress;
        StringBuilder sb = new StringBuilder();
        int bar_length = 15;
        for(int i = 0; i<bar_length; i++) {
            if(i < bar_length*progress_percentage) {
                sb.append("&a⬛");
            } else {
                sb.append("&8⬛");
            }
        }
        for (String s : ConfigSettings.CUBOIDS_HOLOGRAM_FORMAT) {
            s = s.replace("%nick%", c.getName());
            s = s.replace("%progress%", sb.toString());
            s = s.replace("%hp%", String.valueOf(c.getHp()));
            s = s.replace("%max-hp%", String.valueOf(ConfigSettings.CUBOIDS_START_HP));
            hologram.appendTextLine(ChatHelper.fixText(s));
        }
    }
}