import os


def load_ctime_functions():
    if os.name == "nt":
        import win32_setctime

        def get_ctime(filepath):
            return os.stat(filepath).st_ctime

        def set_ctime(filepath, timestamp):
            if not win32_setctime.SUPPORTED:
                return

            try:
                win32_setctime.setctime(filepath, timestamp)
            except (OSError, ValueError):
                pass

    elif hasattr(os.stat_result, "st_birthtime"):

        def get_ctime(filepath):
            return os.stat(filepath).st_birthtime

        def set_ctime(filepath, timestamp):
            pass

    elif hasattr(os, "getxattr") and hasattr(os, "setxattr"):

        def get_ctime(filepath):
            try:
                return float(os.getxattr(filepath, b"user.loguru_crtime"))
            except OSError:
                return os.stat(filepath).st_mtime

        def set_ctime(filepath, timestamp):
            try:
                os.setxattr(filepath, b"user.loguru_crtime", str(timestamp).encode("ascii"))
            except OSError:
                pass

    else:

        def get_ctime(filepath):
            return os.stat(filepath).st_mtime

        def set_ctime(filepath, timestamp):
            pass

    return get_ctime, set_ctime


get_ctime, set_ctime = load_ctime_functions()