import getopt
import sys
from os import path
import click
import core.utils
from core.sheerka.Sheerka import Sheerka
from prompt_toolkit import prompt
from prompt_toolkit.auto_suggest import AutoSuggestFromHistory
from prompt_toolkit.history import FileHistory


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


def main(argv):
    debug = False
    interactive = False
    loggers = set()

    try:
        opts, args = getopt.getopt(argv, "hdl:i", ["help", "debug", "logger=", "interactive"])

        for o, a in opts:
            if o in ('-h', "--help"):
                usage()
                return True
            if o in ('-d', "--debug"):
                debug = True
            if o in ('-l', '-logger'):
                loggers.add(a)
            if o in ('-i', '--interactive'):
                interactive = True
    except getopt.GetoptError:
        usage()
        sys.exit(2)

    sheerka = Sheerka(debug=debug, loggers=loggers)
    sheerka.initialize()
    history_file = path.abspath(path.join(path.expanduser("~"), ".sheerka", "history.txt"))

    if interactive:
        while True:
            try:
                _in = prompt('sheerka> ',
                             history=FileHistory(history_file),
                             auto_suggest=AutoSuggestFromHistory(),
                             )
                if _in in ("exit", "quit", "bye"):
                    print("Take care.")
                    break

                if _in == '__':
                    _in = click.edit()

                result = sheerka.evaluate_user_input(_in)
                sheerka.print(result)
            except KeyboardInterrupt:
                continue
            except EOFError:
                print("EOFError...")
                sys.exit(3)
        sys.exit(0)
    else:
        _in = core.utils.sysarg_to_string(args)
        result = sheerka.evaluate_user_input(_in)
        sheerka.print(result)

        return result[-1].status if len(result) > 0 else 1


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