#!/usr/bin/env python3
"""
__init__.py - Phenny Init Module
Copyright 2008, Sean B. Palmer, inamidst.com
Licensed under the Eiffel Forum License 2.

http://inamidst.com/phenny/
"""

import os
import signal
import sys
import threading
import time


class Watcher(object):
    # Cf. http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/496735
    def __init__(self):
        self.child = os.fork()
        if self.child != 0:
            signal.signal(signal.SIGTERM, self.sig_term)
            self.watch()

    def watch(self):
        try:
            os.wait()
        except KeyboardInterrupt:
            self.kill()
        sys.exit()

    def kill(self):
        try:
            os.kill(self.child, signal.SIGKILL)
        except OSError:
            pass

    def sig_term(self, signum, frame):
        self.kill()
        sys.exit()


def run_phenny(config):
    if hasattr(config, 'delay'):
        delay = config.delay
    else:
        delay = 20

    def connect(config):
        import bot
        p = bot.Phenny(config)

        ssl_context = p.get_ssl_context(config.ca_certs)
        if config.ssl_cert and config.ssl_key:
            ssl_context.load_cert_chain(config.ssl_cert, config.ssl_key)
        p.run(config.host, config.port, config.ssl, config.ipv6, None,
              ssl_context)

    try:
        Watcher()
    except Exception as e:
        print('Warning:', e, '(in __init__.py)', file=sys.stderr)

    while True:
        try:
            connect(config)
        except KeyboardInterrupt:
            sys.exit()

        if not isinstance(delay, int):
            break

        msg = "Warning: Disconnected. Reconnecting in {0} seconds..."
        print(msg.format(delay), file=sys.stderr)
        time.sleep(delay)


def run(config):
    t = threading.Thread(target=run_phenny, args=(config,))
    if hasattr(t, 'run'):
        t.run()
    else:
        t.start()


if __name__ == '__main__':
    print(__doc__)