#pragma once

#include "app_manager.h"
#include "canvas.h"
#include "widgets.h"

namespace roro {

// Composes the frame (Status Bar, foreground App, Toast) off-screen and pushes it to the display.
class Screen {
   public:
    bool begin();  // allocates the frame buffer (~32 KB at 8-bit colour)
    void render(AppManager& apps, const StatusInfo& status, const Toast* toast);
    // Takes over the screen while a Firmware Update is received or about to restart.
    void renderUpdate(const std::string& title, const std::string& detail, int percent);
    Canvas& canvas() { return canvas_; }

   private:
    Canvas canvas_;
    const App* lastApp_ = nullptr;  // for an App that keeps what it drew (App::retainsContent)
    bool lost_ = true, overlayWas_ = false;
};

}  // namespace roro