#    Python wrapper of realtime script
#    Copyright 2026 Hannes Diethelm <hannes.diethelm@gmail.com>
#
#    This program is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program; if not, write to the Free Software
#    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

import subprocess

REALTIME="@REALTIME@"

def verify_info() -> tuple[bool, str]:
    #Checks if system is realtime compatible
    cmd = [REALTIME, "verify"]
    ret = subprocess.run(cmd, stdin=subprocess.DEVNULL, capture_output=True, text=True)
    if ret.returncode != 0 and ret.returncode != 1:
        raise RuntimeError("cmd \"" + " ".join(cmd) + "\" failed with status " + str(ret.returncode))
    return ret.returncode==0, ret.stdout.rstrip();

def verify() -> bool:
    ret, _ = verify_info();
    return ret;

def status() -> bool:
    #Status: realtime core running (rtapi_app running or kernel modules active)
    #Note: rtapi_app running does not mean realtime compatibility!
    cmd = [REALTIME, "status"]
    ret = subprocess.run(cmd, stdin=subprocess.DEVNULL, stdout=subprocess.DEVNULL)
    if ret.returncode != 0 and ret.returncode != 1:
        raise RuntimeError("cmd \"" + " ".join(cmd) + "\" failed with status " + str(ret.returncode))
    return ret.returncode==0;