#!/usr/bin/env python3
#
# Copyright (C) 2023 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/>.

# T5050: Log options
#  cli changes from:       
#  set firewall [name | ipv6-name] <name> rule <number> log-level <log_level>
#  To
#  set firewall [name | ipv6-name] <name> rule <number> log-options level <log_level>

import re

from sys import argv
from sys import exit

from vyos.configtree import ConfigTree
from vyos.ifconfig import Section

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

file_name = argv[1]

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

base = ['firewall']
config = ConfigTree(config_file)

if not config.exists(base):
    # Nothing to do
    exit(0)

if config.exists(base + ['name']):
    for name in config.list_nodes(base + ['name']):
        if not config.exists(base + ['name', name, 'rule']):
            continue

        for rule in config.list_nodes(base + ['name', name, 'rule']):
            log_options_base = base + ['name', name, 'rule', rule, 'log-options'] 
            rule_log_level = base + ['name', name, 'rule', rule, 'log-level']

            if config.exists(rule_log_level):
                tmp = config.return_value(rule_log_level)
                config.delete(rule_log_level)
                config.set(log_options_base + ['level'], value=tmp)

if config.exists(base + ['ipv6-name']):
    for name in config.list_nodes(base + ['ipv6-name']):
        if not config.exists(base + ['ipv6-name', name, 'rule']):
            continue

        for rule in config.list_nodes(base + ['ipv6-name', name, 'rule']):
            log_options_base = base + ['ipv6-name', name, 'rule', rule, 'log-options'] 
            rule_log_level = base + ['ipv6-name', name, 'rule', rule, 'log-level']

            if config.exists(rule_log_level):
                tmp = config.return_value(rule_log_level)
                config.delete(rule_log_level)
                config.set(log_options_base + ['level'], value=tmp)

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))
    exit(1)