#!/usr/bin/env python
""" GPL """
import sys
import signal
import locale
import time
import dbus
import dbus.service
import dbus.mainloop.glib
import gobject
import socket


SKYPE_SERVICE = 'com.Skype.API'
CLIENT_NAME = 'SkypeApiPythonShell'

local_encoding = locale.getdefaultlocale()[1]
need_conv = (local_encoding != 'utf-8')

# well, this is a bit hackish. we store the socket of the last connected client
# here and notify it. maybe later notify all connected clients?
conn = None

def utf8_decode(utf8_str):
   if need_conv:
       return utf8_str.decode('utf-8').encode(local_encoding, 'replace')
   else:
       return utf8_str

def utf8_encode(local_str):
   if need_conv:
       return local_str.decode(local_encoding).encode('utf-8')
   else:
       return local_str

def sig_handler(signum, frame):
   print 'Caught signal %d, exiting.' % signum
   mainloop.quit()

def input_handler(fd, io_condition):
   input = fd.recv(1024)
   for i in input.split("\n"):
       if i:
           fd.send(skype.send(i.strip()) + "\n")
   return True


class SkypeApi(dbus.service.Object):
   def __init__(self):
       bus = dbus.SessionBus()

       try:
           self.skype_api = bus.get_object(SKYPE_SERVICE, '/com/Skype')
       except dbus.exceptions.DBusException:
	   sys.exit("Can't find any Skype instance. Are you sure you have started Skype?")

       reply = self.send('NAME ' + CLIENT_NAME)
       if reply != 'OK':
           sys.exit('Could not bind to Skype client')

       reply = self.send('PROTOCOL 5')
       dbus.service.Object.__init__(self, bus, "/com/Skype/Client", bus_name='com.Skype.API')


   # skype -> client (async)
   @dbus.service.method(dbus_interface='com.Skype.API')
   def Notify(self, msg_text):
       global conn
       text = utf8_decode(msg_text)
       print '<<', text
       if conn:
           conn.send(msg_text + "\n")

   # client -> skype (sync, 5 sec timeout)
   def send(self, msg_text):
       if not len(msg_text):
           return
       print '>> ', msg_text
       try:
	       reply = utf8_decode(self.skype_api.Invoke(utf8_encode(msg_text)))
       except dbus.exceptions.DBusException, s:
	       reply = str(s)
       print '<< ', reply
       return reply


dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
skype = SkypeApi()
signal.signal(signal.SIGINT, sig_handler)

mainloop = gobject.MainLoop()

def server(host, port):
	'''Initialize server and start listening.'''
	sock = socket.socket()
	sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
	sock.bind((host, port))
	sock.listen(1)
	gobject.io_add_watch(sock, gobject.IO_IN, listener)
def listener(sock, *args):
	'''Asynchronous connection listener. Starts a handler for each connection.'''
	global conn
	conn, addr = sock.accept()
	fileno = conn.fileno()
	gobject.io_add_watch(conn, gobject.IO_IN, input_handler)
	return True
if __name__=='__main__':
	server('localhost', 2727)
	mainloop.run()