#pragma once

#include "AppLayer.h"
#include "../Screens/Screen.h"
#include "Widgets/Panel.h"
#include <stack>
#include <list>

#include "../Widgets/DebugOverlay.h"


// render ui-v2 screens + animate transitions + splash screen
class ScreenLayer: public AppLayer {
    static std::stack<std::unique_ptr<Screen>> screens;
    static std::list<std::shared_ptr<PointerStream>> pointerStreams;
    static std::unique_ptr<DebugOverlay> overlay;
    static std::unique_ptr<UI::Panel> statusbar;
    static bool pointerDispatchActive;
    static bool closeRequested;
    static UI::Thickness safeInsets; // last queried device cutout insets
    static float uiScale; // window display scale for UI
    static void updateSafeAreaInsets(SDL_Window* window, int pixelWidth, int pixelHeight);
    static void updateUIScale(SDL_Window* window);

    static void FlushDeferredActions();
public:
    ScreenLayer();
    static void OpenScreen(std::unique_ptr<Screen> screen);
    static void CloseScreen();
    static void SetDebugVisible(bool visible);
    static void SetFps(double fps);
    static float GetUIScale();
    static void SetUIScale(float scale);
    bool OnDown(std::shared_ptr<PointerStream> stream) override;

    virtual void OnRender() override;
    virtual void OnActivate() override;
    virtual void OnDeactivate() override;
};