// x-run: make run
#include <raylib.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <xcb/xcb.h>
#include <xcb/xproto.h>
#include "screenshot.h"
#include "windowtree.h"


int main(int argc, char **argv) {
  (void)argc;
  (void)argv;
  xcb_connection_t *xcb = xcb_connect(NULL, NULL);

  xcb_screen_t *screen = xcb_setup_roots_iterator(xcb_get_setup(xcb)).data;

  printf("root: 0x%08x\n", screen->root);

  size_t n_windows;
  struct window_info *windows = get_windows_list(xcb, &n_windows);

  SetConfigFlags(FLAG_WINDOW_TRANSPARENT | FLAG_WINDOW_RESIZABLE);
  InitWindow(0, 0, "img/scrall");

  Font font = LoadFontEx("/usr/share/fonts/Unifont/Unifont.ttf", 16, 0, 8192);


  struct window_display {
    Vector2 offset;
    Texture2D texture;
  } *windows_snaps = calloc(n_windows, sizeof(struct window_display));

  for (size_t i = 0; i < n_windows; i++) {
    Image screenshot = get_screenshot(xcb, windows[i].wid);
    if (screenshot.data) {
      windows_snaps[i].texture = LoadTextureFromImage(screenshot);
      ExportImage(screenshot, TextFormat("screen_%08x.png", windows[i].wid));
      UnloadImage(screenshot);
    } else {
      windows_snaps[i].texture.id = -1;
    }
    windows_snaps[i].offset.x = windows[i].rect.x;
    windows_snaps[i].offset.y = windows[i].rect.y;
  }

  for (int frame = 0; !WindowShouldClose(); frame++) {
    BeginDrawing();
    ClearBackground(Fade(BLACK, 0.9));

    BeginBlendMode(BLEND_ALPHA);

    for (size_t i = 0; i < n_windows; i++) {
      if (windows_snaps[i].texture.id != (unsigned int)-1 && ((frame / 10) % n_windows) == i) {
        DrawTextureV(windows_snaps[i].texture, windows_snaps[i].offset, WHITE);
      }
    }

    for (size_t i = 0; i < n_windows; i++) {
      DrawTextEx(font,
          TextFormat("0x%08x %dx%d+%d+%d %s\n",
          windows[i].wid,
          windows[i].rect.width,
          windows[i].rect.height,
          windows[i].rect.x,
          windows[i].rect.y,
          windows[i].title),
          (Vector2) { 8, 8 + 18 * i }, 16, 0,
          windows_snaps[i].texture.id == (unsigned int)-1 ? RED :WHITE);
    }

    EndBlendMode();

    EndDrawing();
  }

  UnloadFont(font);
}