import getopt
import sys
from core.sheerka import Sheerka
import logging


def usage():
    print("Sheerka v0.1\n")
    print("usage:")
    print(sys.argv[0] + "[-hd] command ")


def sysarg_to_string(argv):
    """
    Transform a list of strings into a single string
    Add quotes if needed
    :return:
    """
    if argv is None or not argv:
        return ""

    result = ""
    first = True
    for s in argv:
        if not first:
            result += " "

        result += '"' + s + '"' if " " in s else s
        first = False

    return result


def init_logging(debug):
    if debug:
        log_format = "%(asctime)s %(name)s [%(levelname)s] %(message)s"
        log_level = logging.DEBUG
    else:
        log_format = "%(message)s"
        log_level = logging.INFO

    logging.basicConfig(format=log_format, level=log_level)


def main(argv):
    try:
        opts, args = getopt.getopt(argv, "hd", ["help", "debug"])
        debug = False
        for o, a in opts:
            if o in ('-h', "--help"):
                usage()
                return True
            if o in ('-d', "--debug"):
                debug = True

        init_logging(debug)
        sheerka = Sheerka()
        sheerka.initialize()

        _in = sysarg_to_string(args)
        result = sheerka.eval(_in)

        logging.info(result)
        return result[-1].status
    except getopt.GetoptError:
        usage()
        sys.exit(2)


if __name__ == '__main__':
    res = main(sys.argv[1:])
    exit(0 if res else 1)