import os
import platform
from cffi import FFI

import sip

from openpilot.common.basedir import BASEDIR

def suffix():
  return ".dylib" if platform.system() == "Darwin" else ".so"


def get_ffi():
  lib = os.path.join(BASEDIR, "selfdrive", "ui", "qt", "libpython_helpers" + suffix())

  ffi = FFI()
  ffi.cdef("void set_main_window(void *w);")
  return ffi, ffi.dlopen(lib)


def set_main_window(widget):
  ffi, lib = get_ffi()
  lib.set_main_window(ffi.cast('void*', sip.unwrapinstance(widget)))