public class AnvilListener implements Listener {

    public AnvilListener(Main instance) {
        instance.getServer().getPluginManager().registerEvents(this, instance);
    }

    @EventHandler(priority = EventPriority.MONITOR)
    public void onInventoryClick(InventoryClickEvent e) {
        // check if the event has been cancelled by another plugin
        if (!e.isCancelled()) {
            HumanEntity ent = e.getWhoClicked();

            // not really necessary
            if (ent instanceof Player) {
                Player player = (Player) ent;
                Inventory inv = e.getInventory();

                // see if the event is about an anvil
                if (inv instanceof AnvilInventory) {
                    InventoryView view = e.getView();
                    int rawSlot = e.getRawSlot();

                    // compare the raw slot with the inventory view to make sure we are talking about the upper inventory
                    if (rawSlot == view.convertSlot(rawSlot)) {
                    /*
                    slot 0 = left item slot
                    slot 1 = right item slot
                    slot 2 = result item slot

                    see if the player clicked in the result item slot of the anvil inventory
                    */
                        if (rawSlot == 2) {
                        /*
                        get the current item in the result slot
                        I think inv.getItem(rawSlot) would be possible too
                        */
                            ItemStack item = e.getCurrentItem();

                            // check if there is an item in the result slot
                            if (item != null) {
                                ItemMeta meta = item.getItemMeta();

                                // it is possible that the item does not have meta data
                                if (meta != null) {
                                    // see whether the item is beeing renamed
                                    if (meta.hasDisplayName()) {
                                        String displayName = meta.getDisplayName();
                                        //if (item.getType() == Material.NAME_TAG) {
                                            Main.getPluginConfig().set("playerdata." + player.getUniqueId().toString() + ".prefix", displayName);
                                            Main.getInstance().saveConfig();
                                            player.closeInventory();
                                        //} else if (item.getType() == Material.PAPER) {
                                            /*Main.getPluginConfig().set("playerdata." + player.getUniqueId().toString() + ".nick", displayName);
                                            Main.getInstance().saveConfig();
                                            player.closeInventory();*/
                                        //}
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }



    /*@EventHandler
    public void onClose(InventoryCloseEvent e) {
        Player player = (Player) e.getPlayer();
        Inventory inv = e.getInventory();

        if (inv instanceof AnvilInventory) {
            player.openInventory(Main.effector);
        }
    }*/
}