#!/usr/bin/env python 
# -*- coding: utf-8 -*-

"""Tokenizer for Indian scripts and Roman script.

This module provides a complete tokenizer for Indian languages including 
Urdu and Kashmiri and Roman script.

Copyright (c) 2015-2016 Irshad Ahmad <irshad.bhat@research.iiit.ac.in>

Distributed under MIT license [http://opensource.org/licenses/mit-license.html].
"""

from __future__ import print_function

__name__       = "Indic Tokenizer"
__author__     = "Irshad Ahmad"
__copyright__  = "Copyright (C) 2015-16 Irshad Ahmad"
__version__    = "1.0"
__license__    = "MIT"
__maintainer__ = "Irshad Ahmad"
__email__      = "irshad.bhat@research.iiit.ac.in"
__status__     = "Beta"
__all__        = ["indic_tokenize", "roman_tokenize"]

import sys
import socket
import argparse
import StringIO
import threading
import multiprocessing

from .indic_tokenize import tokenize_ind
from .roman_tokenize import tokenize_rom

_MAX_BUFFER_SIZE_ = 1024000 #1MB

def processInput(inFD, outFD, tzr):
    # convert data
    for line in inFD:
        line = tzr.tokenize(line)
        outFD.write('%s\n' %line)

class ClientThread(threading.Thread):
    def __init__(self, ip, port, clientsocket, tzr):
        threading.Thread.__init__(self)
        self.tzr = tzr
        self.ip = ip
        self.port = port
        self.csocket = clientsocket
        #print "[+] New thread started for "+ip+":"+str(port)

    def run(self):
        #print "Connection from : "+ip+":"+str(port)

        data = self.csocket.recv(_MAX_BUFFER_SIZE_)
        #print "Client(%s:%s) sent : %s"%(self.ip, str(self.port), data)
        fakeInputFile = StringIO.StringIO(data)
        fakeOutputFile = StringIO.StringIO("")
        processInput(fakeInputFile, fakeOutputFile, self.tzr)
        fakeInputFile.close()
        self.csocket.send(fakeOutputFile.getvalue())
        fakeOutputFile.close()
        self.csocket.close()

        #print "Client at "+self.ip+" disconnected..."

def ind_main():
    lang_help = """select language (3 letter ISO-639 code)
        Hindi       : hin
        Urdu        : urd
        Telugu      : tel
        Tamil       : tam
        Malayalam   : mal
        Kannada     : kan
        Bengali     : ben
        Oriya       : ori
        Punjabi     : pan
        Marathi     : mar
        Nepali      : nep
        Gujarati    : guj
        Bodo        : bod
        Konkani     : kok
        Assamese    : asm
        Kashmiri    : kas"""
    languages = "hin urd ben asm guj mal pan tel tam kan ori mar nep bod kok kas".split()
    # parse command line arguments 
    parser = argparse.ArgumentParser(prog="indic_tokenizer",
                                    description="Tokenizer for Indian Scripts",
                                    formatter_class=argparse.RawTextHelpFormatter)
    parser.add_argument('--i', metavar='input', dest="INFILE", type=argparse.FileType('r'), default=sys.stdin, help="<input-file>")
    parser.add_argument('--l', metavar='language', dest="lang", choices=languages, default='hin', help=lang_help)
    parser.add_argument('--s', dest='split_sen', action='store_true', help="set this flag to apply sentence segmentation")
    parser.add_argument('--o', metavar='output', dest="OUTFILE", type=argparse.FileType('w'), default=sys.stdout, help="<output-file>")
    parser.add_argument('--daemonize', dest='isDaemon', help='Do you want to daemonize me?', action='store_true', default = False)
    parser.add_argument('--port', type=int, dest='daemonPort', help='Specify a port number')
    args = parser.parse_args()

    # initialize convertor object
    tzr = tokenize_ind(lang=args.lang, split_sen=args.split_sen)

    # convert data
    if args.isDaemon and args.daemonPort:
        host = "0.0.0.0" #Listen on all interfaces
        port = args.daemonPort #Port number

        tcpsock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        tcpsock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

        tcpsock.bind((host,port))

        while True:
            tcpsock.listen(multiprocessing.cpu_count())
            #print "nListening for incoming connections..."
            (clientsock, (ip, port)) = tcpsock.accept()

            #pass clientsock to the ClientThread thread object being created
            newthread = ClientThread(ip, port, clientsock, tzr)
            newthread.start()
    else:
        processInput(args.INFILE, args.OUTFILE, tzr)

    # close files 
    args.INFILE.close()
    args.OUTFILE.close()

def rom_main():
    # parse command line arguments 
    parser = argparse.ArgumentParser(prog="roman_tokenizer", description="Tokenizer for Roman-Script")
    parser.add_argument('--i', metavar='input', dest="INFILE", type=argparse.FileType('r'), default=sys.stdin, help="<input-file>")
    parser.add_argument('--s', dest='split_sen', action='store_true', help="set this flag to apply sentence segmentation")
    parser.add_argument('--o', metavar='output', dest="OUTFILE", type=argparse.FileType('w'), default=sys.stdout, help="<output-file>")
    parser.add_argument('--daemonize', dest='isDaemon', help='Do you want to daemonize me?', action='store_true', default = False)
    parser.add_argument('--port', type=int, dest='daemonPort', help='Specify a port number')
    args = parser.parse_args()

    # initialize convertor object
    tzr = tokenize_rom(split_sen=args.split_sen)

    # convert data
    if args.isDaemon and args.daemonPort:
        host = "0.0.0.0" #Listen on all interfaces
        port = args.daemonPort #Port number

        tcpsock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        tcpsock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

        tcpsock.bind((host,port))

        while True:
            tcpsock.listen(multiprocessing.cpu_count())
            #print "nListening for incoming connections..."
            (clientsock, (ip, port)) = tcpsock.accept()

            #pass clientsock to the ClientThread thread object being created
            newthread = ClientThread(ip, port, clientsock, tzr)
            newthread.start()
    else:
        processInput(args.INFILE, args.OUTFILE, tzr)

    # close files 
    args.INFILE.close()
    args.OUTFILE.close()

if __name__ ==  '__main__':
    rom_main()
    #ind_main()