menu.h

#pragma once

#include <avr/io.h>
#include <stdio.h>

#include "../oled/oled.h"

namespace Menu {

    struct Item {

        char *label = nullptr;

        uint8_t label_length;

        void *action = nullptr;

        bool has_sub_menu = false;

        Item *next = nullptr;

        Item(char *label, uint8_t label_length);

        void AddAction(void (*fn)());
    };


    struct Menu {

        Menu *parent = nullptr;

        Item *first = nullptr;
    };

    class Controller {

    private:

        OLED *oled = nullptr;

        uint8_t num_lines;

        Menu *root;

        Menu *current_menu_control = nullptr;

        Item *current_item_control = nullptr;


        Menu *current_menu_navigate = nullptr;

        Item *current_item_navigate = nullptr;

        uint8_t current_index_navigate = 0;

        uint8_t current_index_selected = 0;

        uint8_t GetMenuLength(Menu *menu);

        void GoToItem(uint8_t index);

        bool GoToNextItem();


    public:

        Controller(OLED& oled, uint8_t num_lines);

        void Initialize(OLED &oled, uint8_t num_lines);

        void ControlGoToRoot();

        void ControlGoToItem(uint8_t index);

        void ControlEnterSubMenu();

        void ControlEnterSubMenu(uint8_t index);

        void ControlGoToParent();


        void AddMenu(Item **items, uint8_t length);

        void AddMenuItems(Item **items, uint8_t length);

        void AddMenuItem(Item *item);

        void AddMenuItem(Item *item, uint8_t index);

        void GoToMenu(Menu *menu);

        void GoToRoot();

        void GoToParent();

        void SelectNext();

        void SelectPrevious();

        void ExecuteItem();


        void Render();
    };
}