#include <GL/glx.h>
#include <SDL3/SDL.h>
#include <iostream>

const unsigned int SCR_WIDTH = 800;
const unsigned int SCR_HEIGHT = 600;

typedef void (*GL_CLEARCOLOR_F)(GLfloat, GLfloat, GLfloat, GLfloat);
typedef void (*GL_CLEAR_F)(GLbitfield);
typedef void (*GL_VIEWPORT_F)(GLint, GLint, GLsizei, GLsizei);

int main()
{
    GL_CLEARCOLOR_F glClearColor = (GL_CLEARCOLOR_F)glXGetProcAddress((const GLubyte*)"glClearColor");
    GL_CLEAR_F glClear = (GL_CLEAR_F)glXGetProcAddress((const GLubyte*)"glCLear");
    GL_VIEWPORT_F glViewport = (GL_VIEWPORT_F)glXGetProcAddress((const GLubyte*)"glViewport");

    if (!SDL_Init(SDL_INIT_VIDEO))
        std::cout << "Can't init SDL: " << SDL_GetError() << std::endl;

    SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);

    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);

    SDL_Window* window = SDL_CreateWindow("Test", SCR_WIDTH, SCR_HEIGHT, SDL_WINDOW_OPENGL);

    if (!window)
        std::cout << "Can't create window: " << SDL_GetError() << std::endl;

    SDL_GLContext context = SDL_GL_CreateContext(window);

    if (!context)
        std::cout << "Can't create context: " << SDL_GetError() << std::endl;

    SDL_GL_SetSwapInterval(1);
    glViewport(0, 0, SCR_WIDTH, SCR_HEIGHT);

    bool shouldQuit = false;
    SDL_Event event;

    while (!shouldQuit)
    {
        while (SDL_PollEvent(&event))
            if (event.type == SDL_EVENT_QUIT)
                shouldQuit = true;

        glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
        glClear(GL_COLOR_BUFFER_BIT);

        SDL_GL_SwapWindow(window);
    }

    SDL_GL_DestroyContext(context);
    SDL_DestroyWindow(window);
    SDL_Quit();

    return 0;
}