#   This file is part of acme-updater, written by Helmut Pozimski 2016-2017.
#
#   stov is free software: you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation, version 2 of the License.
#
#   stov 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 stov.  If not, see <http://www.gnu.org/licenses/>.


# -*- coding: utf8 -*-

""" Main function of acme-updater, parses command line arguments, sets up
logging and executes the modules.
"""

import argparse
import logging
import json
import sys

from amulib.helpers import get_log_level
from amulib import apache
from amulib import postfix
from amulib import dovecot
from amulib import ejabberd


def main():
    """
    Main function of acme-updater.
    """
    config = None
    parser = argparse.ArgumentParser()
    parser.add_argument("--apache", help="use the apache module",
                        action="store_true")
    parser.add_argument("--postfix", help="use the postfix module",
                        action="store_true")
    parser.add_argument("--dovecot", help="use the dovecot module",
                        action="store_true")
    parser.add_argument("--ejabberd", help="use the ejabberd module",
                        action="store_true")
    parser.add_argument("--verbose", "-V", help="be verbose, enables debug "
                                                "output",
                        action="store_true")
    parser.add_argument("--config", "-C", help="path to the configuration "
                                               "file", type=str)
    args = parser.parse_args()
    logger = logging.getLogger("acme-updater")
    logger.addHandler(logging.StreamHandler())
    if args.config:
        try:
            with open(args.config, "r") as fobj:
                config = json.load(fobj)
        except IOError:
            logger.error("Error: Could not open configuration file")
            sys.exit(1)
        except json.JSONDecodeError:
            logger.error("Error: Could not parse configuration file")
            sys.exit(1)
    if args.verbose:
        logger.setLevel(logging.DEBUG)
    elif config:
        logger.setLevel(get_log_level(config["loglevel"]))
    else:
        logger.setLevel(logging.INFO)
    if args.apache:
        if config:
            apache.run(config["apache"], config["acme_dir"],
                       config["named_key_path"], config["dns_server"])
        else:
            apache.run()
    if args.postfix:
        if config:
            postfix.run(config["postfix"], config["acme_dir"],
                        config["named_key_path"], config["dns_server"])
        else:
            postfix.run()
    if args.dovecot:
        if config:
            dovecot.run(config["dovecot"], config["acme_dir"],
                        config["named_key_path"], config["dns_server"])
        else:
            dovecot.run()
    if args.ejabberd:
        if config:
            ejabberd.run(config["ejabberd"], config["acme_dir"],
                         config["named_key_path"], config["dns_server"])
        else:
            ejabberd.run()