circa

#!/usr/bin/python3
# -*- coding: utf-8 -*-
import argparse
import configparser
import getpass
import logging
import pathlib
import signal
import sys

from circa import Circa

circa = None

def sig(*args):
	if circa:
		circa.close()
	logging.info("Exiting.")
	print()

signal.signal(signal.SIGINT, sig)
signal.signal(signal.SIGTERM, sig)

def build_parser():
	parser = argparse.ArgumentParser(prog="circa")
	parser.add_argument("-s", "--server", metavar="HOST", help="Connect to HOST")
	parser.add_argument("-p", "--port", default=6667,
		help="Connect to port PORT (default: 6667)")
	parser.add_argument("-n", "--nick", default="circa",
		help="Set nick (default: circa)")
	parser.add_argument("-u", "--username", default="circa",
		help="Set username (default: circa)")
	parser.add_argument("-r", "--realname", metavar="NAME", default="circa",
		help="Set real name (ircname) (default: circa)")
	parser.add_argument("-P", "--password", action="store_true",
		help="Provide a password prompt")
	parser.add_argument("-l", "--log", metavar="FILE", default="circa.log",
		help="Log to a file (default: circa.log)")
	parser.add_argument("-c", "--cmd", metavar="CHAR", default="\\",
		help="Set the prefix for command characters (default: \\)")
	parser.add_argument("-v", "--verbose", action="store_true",
		help="Log messages more verbosely")
	parser.add_argument("CONFIG", nargs="?", help="Configuration file")
	return parser

def parse_args():
	args = build_parser().parse_args()

	conf = {
		"cwd": pathlib.Path(sys.argv[0]).resolve().parent,
		"server": args.server,
		"port": int(args.port),
		"nick": args.nick,
		"username": args.username,
		"realname": args.realname,
		"log": args.log,
		"prefix": args.cmd,
		"verbose": args.verbose,
		"linelimit": 5
	}

	if args.CONFIG:
		with open(args.CONFIG) as f:
			cp = configparser.ConfigParser(delimiters=("=",), allow_no_value=True)
			cp.read_file(f)
			conf.update(cp["server"])
			conf["port"] = int(conf["port"])
			conf.update(cp["bot"])
			conf["channels"] = list(cp["channels"].keys())
			conf["modules"] = list(cp["modules"].keys())
			conf["admins"] = list(cp["admins"].keys())
			conf["linelimit"] = int(conf["linelimit"])

	logging.basicConfig(filename=conf["log"],
		level=logging.DEBUG if conf["verbose"] else logging.INFO,
		style="%", format="%(asctime)s %(levelname)s %(message)s")

	if args.password and "password" not in conf:
		conf["password"] = getpass.getpass()

	return conf

if __name__ == "__main__":
	conf = parse_args()
	circa = Circa(conf)