#!/usr/bin/python3
# pylint: disable=missing-module-docstring,invalid-name
#
# wrapper for Script to update pacakge paths and gpg key ids.
#
# Copyright (c) 2008--2015 Red Hat, Inc.
#
# Authors: Pradeep Kilambi
#
# This software is licensed to you under the GNU General Public License,
# version 2 (GPLv2). There is NO WARRANTY for this software, express or
# implied, including the implied warranties of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. You should have received a copy of GPLv2
# along with this software; if not, see
# http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
#
# Red Hat trademarks are not licensed under GPLv2. No permission is
# granted to use or replicate Red Hat trademarks that are incorporated
# in this software or its documentation.
#


if __name__ != "__main__":
    raise ImportError("module cannot be imported")

# pylint: disable-next=wrong-import-position
import sys


# pylint: disable-next=invalid-name
def systemExit(code, msgs=None):
    "Exit with a code and optional message(s). Saved a few lines of code."

    if msgs:
        if type(msgs) not in [type([]), type(())]:
            msgs = (msgs,)
        for msg in msgs:
            sys.stderr.write(str(msg) + "\n")
    sys.exit(code)


# pylint: disable-next=wrong-import-position
import os

# quick check to see if you are a super-user.
if os.getuid() != 0:
    sys.stderr.write("ERROR: must be root to execute\n")
    sys.exit(8)


try:
    from rhn import rhnLockfile
except KeyboardInterrupt:
    systemExit(0, "\nUser interrupted process.")
except ImportError:
    sys.stderr.write(
        # pylint: disable-next=consider-using-f-string,undefined-variable
        "Unable to find RHN code tree.\n" "Path not correct? '%s'\n" % _LIBPATH
    )
    raise


# acquire lock/check for other instances of update packages
#   i.e., lock against multiple instances of updatePackages
LOCK = None
try:
    LOCK = rhnLockfile.Lockfile("/run/update-packages.pid")
except rhnLockfile.LockfileLockedException:
    systemExit(
        1,
        "ERROR: attempting to run more than one instance of update-packages. Exiting.",
    )

try:
    # NOTE: importing
    from spacewalk.satellite_tools import updatePackages
except KeyboardInterrupt:
    systemExit(0, "\nUser interrupted process.")
except ImportError as e:
    # pylint: disable-next=consider-using-f-string
    systemExit(2, "Unable to find update package tool.\n" "Error: %s" % e)


# pylint: disable-next=invalid-name
def releaseLOCK():
    # pylint: disable-next=global-variable-not-assigned
    global LOCK
    if LOCK:
        LOCK.release()


def main():
    # execute
    try:
        return updatePackages.main()
    except KeyboardInterrupt:
        systemExit(0, "\nUser interrupted process.")

    releaseLOCK()
    return 0


if __name__ == "__main__":
    try:
        sys.exit(abs(main() or 0))
    except KeyboardInterrupt:
        systemExit(0, "\nUser interrupted process.")
