#!/usr/bin/env python3
#
# Copyright (C) 2020 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# 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, see <http://www.gnu.org/licenses/>.

# remove "system console netconsole"
# remove "system console device <device> modem"

import os
import sys

from vyos.configtree import ConfigTree

if (len(sys.argv) < 1):
    print("Must specify file name!")
    sys.exit(1)

file_name = sys.argv[1]

with open(file_name, 'r') as f:
    config_file = f.read()

config = ConfigTree(config_file)
base = ['system', 'console']
if not config.exists(base):
    # Nothing to do
    sys.exit(0)
else:
    # remove "system console netconsole" (T2561)
    if config.exists(base + ['netconsole']):
        config.delete(base + ['netconsole'])

    for device in config.list_nodes(base + ['device']):
        dev_path = base + ['device', device]
        # remove "system console device <device> modem" (T2570)
        if config.exists(dev_path + ['modem']):
            config.delete(dev_path + ['modem'])

    try:
        with open(file_name, 'w') as f:
            f.write(config.to_string())
    except OSError as e:
        print("Failed to save the modified config: {}".format(e))
        sys.exit(1)