#include <stdio.h>
#include <GL/freeglut.h>
#include <gtk/gtk.h>
#include <gdk/gdkx.h>
#include <obs/obs.h>

const int window_width = 1280;
const int window_height = 720;
Window xw;

void
print_obs_version_string()
{
    const char* version = obs_get_version_string();
    printf("OBS version: %s\n", version);
}

void
obs_render (void* param,
            uint32_t cx,
            uint32_t cy)
{
    obs_render_main_texture ();
}

static void
activate (GtkApplication* app,
          gpointer user_data)
{
    GtkWidget* window = gtk_application_window_new (app);
    gtk_window_set_title (GTK_WINDOW(window), "OBS");
    gtk_window_set_default_size (GTK_WINDOW(window), window_width, window_height);
    gtk_window_present (GTK_WINDOW(window));
    xw = gdk_x11_window_get_xid (gtk_widget_get_window(window));
}

void
render_sources(GtkApplication* app)
{
    GtkWidget* window = gtk_application_window_new (app);
    gtk_window_set_title (GTK_WINDOW(window), "OBS - Sources");
    gtk_window_set_default_size (GTK_WINDOW(window), 500, 500);
    gtk_window_present (GTK_WINDOW(window));
}

int
main(int argc, char** argv)
{
    GtkApplication* app;
    obs_display_t* display;
    int status;

    app = gtk_application_new("xyz.dwayne.obs", G_APPLICATION_FLAGS_NONE);
    g_signal_connect(app, "activate", G_CALLBACK(activate), NULL);

    print_obs_version_string();

    if (!obs_initialized())
        {
            if (!obs_startup("en-US", NULL, NULL))
                {
                    printf("Failed to start OBS...\n");
                    return 1;
                }

            glutInit(&argc, argv);

            struct obs_video_info v;
            struct obs_audio_info a;

            v.graphics_module = "libobs-opengl.so.0";
            v.fps_num = 30000;
            v.fps_den = 1001;
            v.base_width = window_width;
            v.base_height = window_height;
            v.output_width = window_width;
            v.output_height = window_height;
            v.output_format = VIDEO_FORMAT_NV12;
            v.adapter = 0;
            v.gpu_conversion = true;
            v.colorspace = VIDEO_CS_601;
            v.range = VIDEO_RANGE_PARTIAL;
            v.scale_type = OBS_SCALE_BICUBIC;

            a.samples_per_sec = 44100;
            a.speakers = SPEAKERS_STEREO;

            obs_reset_video (&v);
            obs_reset_audio (&a);
        }

    // struct gs_init_data info;
    // info.cx = window_width;
    // info.cy = window_height;
    // info.window = NULL; // xw??
    // info.format = GS_BGRA;
    // info.zsformat = GS_ZS_NONE;

    // display = obs_display_create (&info, 0);
    // if (display == NULL)
    //     {
    //         printf("error creating display!\n");
    //     }

    // obs_display_add_draw_callback (display, obs_render, NULL);

    status = g_application_run (G_APPLICATION (app), argc, argv);

    // obs_display_destroy (display);
    obs_shutdown ();
    g_object_unref (app);

    return status;
}