#!/usr/bin/python3
# SPDX-License-Identifier: AGPL-3.0-or-later
"""
Configuration helper for Janus server.
"""

import argparse

from plinth import action_utils

JANUS_CONF_PATH = '/etc/janus/janus.jcfg'


def parse_arguments():
    """Return parsed command line arguments as dictionary"""
    parser = argparse.ArgumentParser()
    subparsers = parser.add_subparsers(dest='subcommand', help='Sub command')
    subparsers.add_parser('setup', help='Configure Janus server')
    subparsers.required = True
    return parser.parse_args()


def subcommand_setup(_):
    """Configure Janus server."""
    with open(JANUS_CONF_PATH, 'r', encoding='utf-8') as config_file:
        config_lines = config_file.readlines()

    with open(JANUS_CONF_PATH, 'w', encoding='utf-8') as config_file:
        for line in config_lines:
            if '#rtp_port_range' in line:
                config_file.write("\trtp_port_range = \"50176-51199\"\n")
            else:
                config_file.write(line)

    action_utils.service_try_restart('janus')


def main():
    arguments = parse_arguments()
    sub_command = arguments.subcommand.replace('-', '_')
    sub_command_method = globals()['subcommand_' + sub_command]
    sub_command_method(arguments)


if __name__ == '__main__':
    main()