#!/usr/bin/python3
# -*- coding: utf-8 -*-
#
# Script use to simulate opennel program (input/output terminal)
#    Copyright (C) 2017  AleaJactaEst
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU Affero General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program 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 Affero General Public License for more details.
#
#    You should have received a copy of the GNU Affero General Public License
#    along with this program.  If not, see <https://www.gnu.org/licenses/>.

import argparse
import sys
import time
import signal


class ManageSignal:

    def __init__(self):
        self.kill_now = False

    def activate(self):
        signal.signal(signal.SIGINT, self.exit_gracefully)
        signal.signal(signal.SIGTERM, self.exit_gracefully)

    def exit_gracefully(self,signum, frame):
        self.kill_now = True


class SimulateProgram():
    def __init__(self):
        self.line = 0

    def print_output(self, message):
        self.line += 1
        print(self.line, message)

    def main(self, noloop, timeout, refuse_kill):
        manageSignal = ManageSignal()
        if refuse_kill:
            manageSignal.activate()
        loop = not noloop
        self.print_output("Initializing")
        self.print_output("Starting")
        self.print_output("Started")
        while loop is True:
            try:
                msg = input()
                self.print_output(msg)
            except (KeyboardInterrupt, EOFError):
                loop = refuse_kill
        time.sleep(timeout)
        self.print_output("End")

def main(args=sys.argv[1:]):
    """ Main function

        :param list args: root password
    """
    parser = argparse.ArgumentParser(description='Simulate program')

    parser.add_argument('--no-loop', action='store_true',
                        help='disable loop', default=False)
    parser.add_argument('--timeout', type=int,
                        default=10, help='timeout')
    parser.add_argument('--disable-kill', action='store_true',
                        help='disable loop', default=False)
    args = parser.parse_args()
    simulate = SimulateProgram()
    simulate.main(args.no_loop,  args.timeout,  args.disable_kill)

if __name__ == '__main__':
    main()