#pragma once
#include "Item.h"
#include <stack>
#include "safemap.h"
#include "Theme.h"
#include "Attributable.h"
#include "olcUTIL_Geometry2D.h"

class Crawler;
class MenuComponent;

enum MenuType{
    TEST,
    TEST_2,
    INVENTORY,
    CLASS_INFO,
    CLASS_SELECTION,
    MAIN_MENU,
    ///////////////////////////////////////////////////////////
    /*DO NOT REMOVE!!*/ENUM_END////////////////////////////////
    ///////////////////////////////////////////////////////////
};

class Menu:IAttributable{
    friend class Crawler;
    friend class Player;
    friend class ItemInfo;

    float buttonHoldTime=0;
    std::vector<MenuComponent*>displayComponents; //Comp.onents that are only for displaying purposes.
    vi2d selection={-1,-1};
    vi2d lastActiveMousePos={};

    MenuComponent*draggingComponent=nullptr;
    Renderable r,overlay;
    static safemap<ITCategory,std::vector<MenuComponent*>>inventoryListeners; //All menu components that care about inventory updates subscribe to this list indirectly (See Menu::AddInventoryListener()).
public:
    //The constructor is private. Use CreateMenu() instead!
    Menu()=default;
    virtual ~Menu()=default;
    void AddComponent(std::string key,MenuComponent*button);
    void Update(Crawler*game);
    void Draw(Crawler*game);
    static void InitializeMenus();
    static void OpenMenu(MenuType menu);
    static std::vector<Menu*>stack;
    static std::string themeSelection;
    static safeunorderedmap<std::string,Theme>themes;
    static const vf2d CENTERED;
    safemap<std::string,MenuComponent*>components; //A friendly way to interrogate any component we are interested in.
    static std::map<MenuType,Menu*>menus;
    vf2d pos; //Specify the upper-left corner of the window. Using CENTERED will always put this where the upper-left corner would center the window.
    vf2d size; //Size in tiles (24x24), every menu will be tile-based
    safemap<int/*Y*/,std::vector<MenuComponent*>>buttons; //Buttons are stored in rows followed by their column order.
    safemap<int/*Y*/,std::vector<MenuComponent*>>keyboardButtons; //Button ordered storage for keyboard/menu 

    static Theme&GetCurrentTheme();
    bool UsingMouseNavigation();
    void SetMouseNavigation(bool mouseNavigation);
    static void InventorySlotsUpdated(ITCategory cat); //Called whenever an inventory item gets added to the player's inventory, thus increasing the total number of slots in our bag.
    static void AddInventoryListener(MenuComponent*component,ITCategory category); //Adds a component to be in a given listener category.
    vf2d center();
private:
    Menu(vf2d pos,vf2d size);
    void HoverMenuSelect(Crawler*game);
    void MenuSelect(Crawler*game);
    void CheckClickAndPerformMenuSelect(Crawler*game);
    //Mandatory before any menu operations! This creates and sets up the menu in memory.
    static Menu*CreateMenu(MenuType type,vf2d pos,vf2d size);
    static void InitializeTestMenu();
    static void InitializeTestSubMenu();
    static void InitializeInventoryWindow();
    static void InitializeClassInfoWindow();
    static void InitializeClassSelectionWindow();
    static void InitializeMainMenuWindow();
    //X (0-3), Y (0-2) for specific 9-patch tile (tiled version).
    static Renderable&GetPatchPart(int x,int y);

    void KeyboardButtonNavigation(Crawler*game,vf2d menuPos);
    void DrawScaledWindowBackground(Crawler*game,vf2d menuPos);
    void DrawTiledWindowBackground(Crawler*game,vf2d menuPos);
    void DrawScaledWindowBorder(Crawler*game,vf2d menuPos);
    void DrawTiledWindowBorder(Crawler*game,vf2d menuPos);

    //This triggers if we use a keyboard/controller input to try and select some off-screen menu item. We should ideally follow the menu cursor.
    bool HandleOutsideDisabledButtonSelection(MenuComponent*disabledButton);

    Pixel GetRenderColor();
    static bool MOUSE_NAVIGATION;
};

struct MenuFuncData{
    Menu&menu;
    Crawler*game;
    MenuComponent*component;
};

typedef std::function<void(MenuFuncData)> MenuFunc;