#pragma once

#include <memory>
#include <functional>

#include "window.h"
#include "event.h"
#include "state_manager.h"
#include "log.h"

namespace Donut
{
    class Application
    {
    public:
        Application(const std::string& name = "Donut", 
                    int width = 1280, int height = 720);
        ~Application();

        void run();
        void close();

        Window& get_window()       { return *m_window;   }
        static Application& get() { return *s_instance; }
    private:
        void on_init();
        void on_shutdown();
        void on_update();
        void on_render();
        void on_event(Event& event);
    private:
        std::unique_ptr<StateManager> m_state_manager;
        std::unique_ptr<Window> m_window;

        bool m_running;
        bool m_minimized;
        
        float m_delta_time = 0.0f;
        float m_last_frame = 0.0f;

        static Application* s_instance;
    };
}