#pragma once
#ifndef _NB_WINDOW
#define _NB_WINDOW

#include "GLLoad.hpp"

#include <array>
#include <map>
#include <stdexcept>
#include <string>

#include <NBCore/Errors.hpp>
#include <NBCore/Utils.hpp>

namespace nb {

class GLError : public std::runtime_error {
public:
    GLError(const std::string&);
};

class OpenGLError : public Error<OpenGLError> {
    using Base = Error<OpenGLError>;

    public:
    using Base::Base;

    enum Codes : unsigned int {
        UNDEFINED, INIT_FAILED, GLFW_INTIALIZED, GLAD_FAILED
    };

    static const std::string type;
    static const ErrorCodeMap ErrorMessages;
};

class WindowError : public Error<WindowError> {
    using Base = Error<WindowError>;

    public:
    using Base::Base;

    enum Codes : unsigned int {
        UNDEFINED, INITIALIZED_WINDOW, NO_GLFW, INIT_FAILED
    };

    static const std::string type;
    static const ErrorCodeMap ErrorMessages;
};

class Window {
public:
    static bool StrictInitialization;
    
    static int getGLFWHint(int);
    static int setGLFWHint(int, int);
    static Window* getCurrent();

    Window(const std::array<uint16_t, 2>, const char*, GLFWmonitor* initMonitor=NULL, GLFWwindow* initWindow=NULL);
    Window(const uint16_t, const uint16_t, const char*, GLFWmonitor* initMonitor=NULL, GLFWwindow* initWindow=NULL);
    ~Window();

    int getWindowHint(int) const;
    GLFWwindow* getWindow() const;
    std::array<uint16_t, 2> getSize() const;
    float getAspectRatio() const;
    std::string getName() const;
    
    int init();
    int setWindowHint(int, int);
    void setCurrent();
    void resize(const std::array<uint16_t, 2>);
    void resize(const uint16_t x, const uint16_t y);

protected:
    static std::map<GLFWwindow*, Window*> WindowContexts;
    static std::map<int, int> GLFWHints;
    static Window* _current;
    static bool _glfw_init;
    static bool checkKillGLFW();

    std::map<int, int> windowHints;
    std::array<uint16_t, 2> windowSize;
    float _aspect_ratio;
    std::string windowName;
    GLFWwindow* window;
    GLFWmonitor* monitor;
    GLFWwindow* shareWindow;
    bool _init = false;
    int gladResponse = -1;
};

};
#endif