#!/usr/bin/python

__author__ = "Steffen Vogel"
__copyright__ = "Copyright 2013, Steffen Vogel"
__license__ = "GPLv3"
__maintainer__ = "Steffen Vogel"
__email__ = "post@steffenvogel.de"
__status__ = "Prototype"

"""
 This file is part of transWhat

 transWhat is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 any later version.

 transwhat 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 General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with transWhat. If not, see <http://www.gnu.org/licenses/>.
"""

import argparse
import traceback
import logging
import asyncore
import sys, os
import e4u
import threading
import Queue

sys.path.insert(0, os.getcwd())

from Spectrum2.iochannel import IOChannel

from whatsappbackend import WhatsAppBackend
from constants import *
from yowsup.common import YowConstants
from yowsup.stacks import YowStack

# Arguments
parser = argparse.ArgumentParser()
parser.add_argument('--debug', action='store_true')
parser.add_argument('--host', type=str, required=True)
parser.add_argument('--port', type=int, required=True)
parser.add_argument('--service.backend_id', metavar="ID", type=int, required=True)
parser.add_argument('config', type=str)
parser.add_argument('-j', type=str, required=True)

args, unknown = parser.parse_known_args()

YowConstants.PATH_STORAGE='/var/lib/spectrum2/' + args.j
loggingfile = '/var/log/spectrum2/' + args.j + '/backends/backend.log'
# Logging
logging.basicConfig( \
	filename=loggingfile,\
	format = "%(asctime)-15s %(levelname)s %(name)s: %(message)s", \
	level = logging.DEBUG if args.debug else logging.INFO \
)

# Handler
def handleTransportData(data):
	plugin.handleDataRead(data)

e4u.load()

closed = False
def connectionClosed():
	global closed
	closed = True

# Main
io = IOChannel(args.host, args.port, handleTransportData, connectionClosed)

plugin = WhatsAppBackend(io, args.j)

plugin.handleBackendConfig('features', 'send_buddies_on_login', 1)

while True:
	try:
		asyncore.loop(timeout=1.0, count=10, use_poll = True)
		try:
			callback = YowStack._YowStack__detachedQueue.get(False) #doesn't block
			callback()
		except Queue.Empty:
			pass
		else:
			break
		if closed:
			break
	except SystemExit:
		break
	except:
		logger = logging.getLogger('transwhat')
		logger.error(traceback.format_exc())