public class Main extends JavaPlugin implements Listener, CommandExecutor
{
    public Inventory c;
	public static Main instance;
	public AdrenalinMechanic AdrenalinMechanic;
	public NokdaynMechanic NokdaynMechanic;
	public PepperMechanic PepperMechanic;
	public ItemStackUtil ItemStackUtil;
	public GUI GUI;

    public void onEnable() {
		setInstance(this);
		instanceClasses();
		GUI.loadGUI();
        this.getServer().getConsoleSender().sendMessage("§aTree§fCapabilities§a success activated!");
        this.getServer().getConsoleSender().sendMessage("§bPlugin by: §aEwrs728 §b(§aVk.com/maksimkuropyatnik§b)");
        this.getServer().getPluginManager().registerEvents((Listener)this, (Plugin)this);
        this.getServer().getPluginManager().registerEvents(new GUIClickEvent(), (Plugin)this);
        this.getServer().getPluginManager().registerEvents(new NokdaynMechanic(), (Plugin)this);
        this.getServer().getPluginManager().registerEvents(new PepperMechanic(), (Plugin)this);
        this.getServer().getPluginManager().registerEvents(new AdrenalinMechanic(), (Plugin)this);
       }

	public static Main getInstance() {
		return instance;
	}

	private static void setInstance(Main instance) {
		Main.instance = instance;
	}

	private void instanceClasses() {
		AdrenalinMechanic = new AdrenalinMechanic();
		PepperMechanic = new PepperMechanic();
		NokdaynMechanic = new NokdaynMechanic();
		ItemStackUtil = new ItemStackUtil();
		GUI = new GUI();
	}

    public boolean onCommand(final CommandSender sender, final Command command, final String label, final String[] args) {
        if (sender instanceof Player) {
            final Player p = (Player)sender;
            if (label.equalsIgnoreCase("Capabilities") || label.equalsIgnoreCase("C") || label.equalsIgnoreCase("\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438") || label.equalsIgnoreCase("\u0412")) {
                p.playSound(p.getLocation(), Sound.ENTITY_PLAYER_LEVELUP, 15.0f, 23.0f);
                p.openInventory(this.c);
            }
        }
        return false;
    }
}