#
# Copyright (C) 2021 Soleta Networks <info@soleta.eu>
#
# This program is free software: you can redistribute it and/or modify it under
# the terms of the GNU Affero General Public License as published by the
# Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.

import os
import shlex
import psutil
import subprocess
from src.log import OgError

from src.ogRest import ThreadState

class OgLinuxOperations:

    def __init__(self):
        self.session = False

    def _restartBrowser(self, url):
        raise OgError('Function not implemented')

    def poweroff(self):
        os.system('systemctl poweroff')

    def reboot(self):
        os.system('systemctl reboot')

    def shellrun(self, request, ogRest):
        cmd = request.getrun()
        is_inline = request.get_inline()

        if not is_inline:
            raise OgError("Only inline mode is supported on Linux")

        try:
            ogRest.proc = subprocess.Popen(
                cmd,
                stdout=subprocess.PIPE,
                shell=True)
            (output, error) = ogRest.proc.communicate()
        except (OSError, subprocess.SubprocessError) as e:
            raise OgError(f'Error when running "shell run" subprocess: {e}') from e

        output = output.decode('utf-8-sig', errors='replace')
        return (ogRest.proc.returncode, cmd, output)

    def session(self, request, ogRest):
        raise OgError('Function not implemented')

    def software(self, request, ogRest):
        raise OgError('Function not implemented')

    def hardware(self, ogRest):
        raise OgError('Function not implemented')

    def setup(self, request, ogRest):
        raise OgError('Function not implemented')

    def image_restore(self, request, ogRest):
        raise OgError('Function not implemented')

    def image_create(self, request, ogRest):
        raise OgError('Function not implemented')

    def cache_delete(self, request, ogRest):
        raise OgError('Function not implemented')

    def cache_fetch(self, request, ogRest):
        raise OgError('Function not implemented')

    def refresh(self, ogRest):
        if self.session:
            session_value = 'LINUXS'
        else:
            session_value = 'LINUX'
        return {"status": session_value}

    def check_interactive_session_change(self):
        old_status = self.session
        has_logged_user = False
        for user in psutil.users():
            if user.terminal:
                has_logged_user = True
                break
        self.session = has_logged_user

        if self.session != old_status:
            return self.session
        return None