#define SDL_MAIN_HANDLED

#include <SDL2/SDL.h>
#include <SDL2/SDL_video.h>
#include <abc.h>
#include <dtx.h>
#include <rez.h>
#include <cstdlib>
#include <cstdio>
#include <iostream>
#include <GL/gl.h>

int main(int argc, char *argv[])
{
    int ret = EXIT_FAILURE;
    rez::ball b("globalops.rez");
    std::unique_ptr<rez::file> f, abcf;
    SDL_Window *window = nullptr;
    SDL_GLContext glcontext = nullptr;
    static const char extension[] = "GL_EXT_texture_compression_s3tc";
    abc abc;
    dtx dtx;

    if (SDL_Init(SDL_INIT_VIDEO) < 0)
    {
        std::cerr << "SDL_Init failed: " << SDL_GetError() << '\n';
        goto end;
    }

    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
    SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);

    if (!(window = SDL_CreateWindow("GlobalOps", SDL_WINDOWPOS_CENTERED,
        SDL_WINDOWPOS_CENTERED, 640, 480,
        SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE)))
    {
        std::cerr << "SDL_CreateWindow failed: " << SDL_GetError() << '\n';
        goto end;
    }
    else if (!(glcontext = SDL_GL_CreateContext(window)))
    {
        std::cerr << "SDL_GL_CreateContext failed: " << SDL_GetError() << '\n';
        goto end;
    }
    else if (!SDL_GL_ExtensionSupported(extension))
    {
        std::cerr << "OpenGL extension " << extension << " not supported\n";
        goto end;
    }
    else if (SDL_GL_MakeCurrent(window, glcontext))
    {
        std::cerr << "SDL_GL_MakeCurrent failed: " << SDL_GetError()
            << std::endl;
        goto end;
    }
    else if (b.parse()
        || !(f = b.open("interface/blueprints/antarctica_tacmap.dtx"))
        || dtx.parse(*f)
        || !(f = b.open("models/grenades/v_frag.abc"))
        || abc.parse(*f))
        goto end;

    for (;;)
    {
        SDL_Event event;

        while (SDL_PollEvent(&event))
        {
            switch (event.type)
            {
                case SDL_QUIT:
                    ret = EXIT_SUCCESS;
                    goto end;
            }
        }

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

        if (dtx.draw())
            goto end;

        SDL_GL_SwapWindow(window);
        SDL_Delay(1.0f / 60.f * 1000.0f);
    }

end:

    if (glcontext)
        SDL_GL_DeleteContext(glcontext);

    if (window)
        SDL_DestroyWindow(window);

    if (SDL_WasInit(SDL_INIT_VIDEO))
        SDL_QuitSubSystem(SDL_INIT_VIDEO);

    return ret;
}