import socket
import os
import sys
from urllib2 import urlopen

# PACKET TEMPLATE for MESSAGES

# 0:15  = USERNAME
# 16:24 = NICKNAME?
# 24:39 = SRC IP
# 39:   = MESSAGE
#v0.0.1

class Chat:
    @staticmethod
    def __DEBUG__(content, is_debug):
        if is_debug:
            sys.stdout(">>%s" % content)
        else:
            pass

    def __init__(self, username, host, port=80, password="",  is_debug=False):
      self.username = username
      self.password = password
      self.host     = host
      self.port     = port
      self.socket   = None
      self.is_debug = is_debug
      self._        = None # temporary variable used for whatever

      self.e_s_r_b_l_a = 4 # expected server reply buffer length  (for) acknowledgement

      self.crlf     = "\r\n"
      self.version  = "001"
      self.ip       = urlopen("http://api.ipify.org").read()

      self.users    = []

      self.packet   = \
    {
     "username" : "".zfill(16),
     "nickname" : "".zfill(8),
     "source"   : "".zfill(15),
     "message"  : None,
     #"sequence" : 0,
    }
      self.auth    = "AUTH%s%s~%s%s" % (self.ip, self.version, len(self.ip), self.crlf)
      self.ack     = "ACKN"
      self.authed  = False

    def new(self):
        return socket.socket(socket.AF_INET, socket.SOCK_STREAM)

    def connect(self):
        if not self.socket:
            self.socket = self.new()
        if self.socket:
            self.socket.connect((self.host, self.port))
            self.socket.send(self.auth)
            self._ = self.socket.recv(4)
            if len(self._) != self.e_s_r_b_l_a:
                print("[1] Received malformed server reply. (%s)" % (self._))
                self.close()
            elif len(self._) == self.e_s_r_b_l_a:
                print("[0] Received correct server reply (according to length). (%s)" % (self._))
            if self._ == self.ack:
                print("[0] Recieved successful server acknowledgement.")
                self.authed = True

    def send_message(self, content):
        pass
    def close(self):
        if socket:
            self.socket.close()
            return 0
        else:
            return 1