//
// Window.hpp
// gui
//
// Created by Bob Polis at 2020-10-14
// Copyright (c) 2020 SwiftCoder. All rights reserved.
//

#ifndef __WINDOW_H_
#define __WINDOW_H_

#include <SDL2/SDL.h>
#include <string>
#include <memory>
#include <stdexcept>
#include <vector>
#include <map>

namespace sc {
    namespace gui {
        using WindowEventHandler = bool(*)(const SDL_Event&, bool quit);
        class Image;

        class Window {
            public:
                static std::vector<Window>& windows() { return _windows; }
                static bool handle_window_event(const SDL_Event& event);
                static bool handle_global_event(const SDL_Event& event);
                static void add_global_event_handler(WindowEventHandler handler, SDL_WindowEventID type);
                static Window* from_sdl(Uint32 window_id);
                static Window& new_window(const std::string& title);

                Window(const std::string& title);

                void add_event_handler(WindowEventHandler handler, SDL_WindowEventID type);
                bool handle_event(const SDL_Event& event, bool quit);

                SDL_Window* window() const { return _w.get(); }
                SDL_Renderer* renderer() const { return _r.get(); }
                void set_size(int w, int h);

                void update() const;
                void show_image(const Image& image);

            private:
                static std::vector<Window> _windows;
                static std::map<SDL_WindowEventID, std::vector<WindowEventHandler>> _global_event_handlers;

                std::string _title;
                std::unique_ptr<SDL_Window,   void(*)(SDL_Window*)>   _w {nullptr, SDL_DestroyWindow};
                std::unique_ptr<SDL_Renderer, void(*)(SDL_Renderer*)> _r {nullptr, SDL_DestroyRenderer};
                std::unique_ptr<SDL_Texture,  void(*)(SDL_Texture*)>  _t {nullptr, SDL_DestroyTexture};
                std::map<SDL_WindowEventID, std::vector<WindowEventHandler>> _event_handlers;
        };
    }
}

#endif // __WINDOW_H_