#!/usr/bin/env python3

import argparse
import asyncio

from .resolver import STSResolver
from . import utils


def parse_args():
    parser = argparse.ArgumentParser(
        formatter_class=argparse.ArgumentDefaultsHelpFormatter)
    parser.add_argument("-v", "--verbosity",
                        help="logging verbosity",
                        type=utils.check_loglevel,
                        choices=utils.LogLevel,
                        default=utils.LogLevel.info)
    parser.add_argument("domain",
                        help="domain to fetch MTA-STS policy from")
    parser.add_argument("known_version",
                        nargs="?",
                        default=None,
                        help="latest known version")

    return parser.parse_args()


def main():  # pragma: no cover
    args = parse_args()
    with utils.AsyncLoggingHandler(None) as log_handler:
        utils.setup_logger('RES', args.verbosity, log_handler)
        loop = asyncio.new_event_loop()
        asyncio.set_event_loop(loop)
        resolver = STSResolver(loop=loop)
        result = loop.run_until_complete(resolver.resolve(args.domain, args.known_version))
    print(result)


if __name__ == '__main__':  # pragma: no cover
    main()
