#!/usr/bin/env python3
#coding:utf8

import socket
import sys

# libpath

try:
    if (sys.version_info.major != 3) or (sys.version_info.minor < 4):
        raise Exception("You must run Syncplay with Python 3.4 or newer!")
except AttributeError:
    import warnings
    warnings.warn("You must run Syncplay with Python 3.4 or newer!")

from twisted.internet import reactor
from twisted.internet.endpoints import TCP4ServerEndpoint, TCP6ServerEndpoint
from twisted.internet.error import CannotListenError

from syncplay.server import SyncFactory, ConfigurationGetter

class ServerStatus: pass

def isListening6(f):
    ServerStatus.listening6 = True

def isListening4(f):
    ServerStatus.listening4 = True

def failed6(f):
    ServerStatus.listening6 = False
    print(f.value)
    print("IPv6 listening failed.")

def failed4(f):
    ServerStatus.listening4 = False
    if f.type is CannotListenError and ServerStatus.listening6:
        pass
    else:
        print(f.value)
        print("IPv4 listening failed.")


if __name__ == '__main__':
    argsGetter = ConfigurationGetter()
    args = argsGetter.getConfiguration()
    factory = SyncFactory(
        args.port,
        args.password,
        args.motd_file,
        args.isolate_rooms,
        args.salt,
        args.disable_ready,
        args.disable_chat,
        args.max_chat_message_length,
        args.max_username_length,
        args.stats_db_file,
        args.tls
    )
    endpoint6 = TCP6ServerEndpoint(reactor, int(args.port))
    endpoint6.listen(factory).addCallbacks(isListening6, failed6)
    endpoint4 = TCP4ServerEndpoint(reactor, int(args.port))
    endpoint4.listen(factory).addCallbacks(isListening4, failed4)
    if ServerStatus.listening6 or ServerStatus.listening4:
        reactor.run()
    else:
        print("Unable to listen using either IPv4 and IPv6 protocols. Quitting the server now.")
        sys.exit()