#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
#  msg.py
#  
#  Copyright 2017 Jyri Eerola <je1@clr-f55255f3d66b4bfba1010f57f9384f00>
#  
#  This program 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 2 of the License, or
#  (at your option) any later version.
#  
#  This program 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 this program; if not, write to the Free Software
#  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
#  MA 02110-1301, USA.
#  
#  

import json
import logging
from pprint import pformat
from multiprocessing import Process

from telegram.ext import Updater, CommandHandler, MessageHandler, Filters
from telegram.error import (TelegramError, Unauthorized, BadRequest, 
                            TimedOut, ChatMigrated, NetworkError)

# Enable logging
logging.basicConfig(format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
                    level=logging.INFO)

logger = logging.getLogger(__name__)



# Define a few command handlers. These usually take the two arguments bot and
# update. Error handlers also receive the raised TelegramError object in error.
def start(bot, update):
    update.message.reply_text('Hullo!')


def halp(bot, update):
    update.message.reply_text('Halp!')


def fok(bot, update):
    update.message.reply_text('Fok!')


def echo(bot, update):
    update.message.reply_text(update.message.text)


def error_callback(bot, update, error):
    try:
        raise error
    except Unauthorized:
        # remove update.message.chat_id from conversation list
        logger.warning(error.msg)
    except BadRequest:
        # handle malformed requests - read more below!
        logger.warning(error.msg)
    except TimedOut:
        # handle slow connection problems
        logger.warning('TimedOut occurred')
    except NetworkError:
        # handle other connection problems
        logger.warning(error.msg)
    except ChatMigrated as e:
        # the chat_id of a group has changed, use e.new_chat_id instead
        logger.warning(error.msg)
    except TelegramError:
        # handle all other telegram related errors
        logger.warning(error.msg)


routingdict = dict()
def route(bot, update, args):
    chat_id = update.message.chat_id
    source_id = ' '.join(args)
    if source_id not in routingdict:
        routingdict[source_id]=set()
    routingdict[source_id].add(chat_id)
    bot.send_message(chat_id=chat_id, text="New route: {} -> {}".format(source_id, chat_id))


def print_routes(bot, update):
    update.message.reply_text(pformat(routingdict))


def input_handler(fd):
    stream = open(fd)
    for line in stream: # CTRL+D, eli EOF, lopettaa
        print('Line: {}'.format(line), end='')
        parsed = json.loads(line)
        source_id = parsed.get('source_id', '')
        for chat_id in routingdict.get(source_id, {}):
            if source_id == 'pandacraft':
                if parsed['verb'] == 'joined':
                    updater.bot.send_message(chat_id=chat_id, text='Pandacraft: {} liittyi peliin'.format(parsed['player']))
                else:
                    updater.bot.send_message(chat_id=chat_id, text='Pandacraft: {} poistui'.format(parsed['player']))
            else:
                updater.bot.send_message(chat_id=chat_id, text=line)


def main(token_file):
    TG_TOKEN = open(token_file).read()

    # Create the EventHandler and pass it your bot's token.
    updater = Updater(TG_TOKEN)

    # Get the dispatcher to register handlers
    dp = updater.dispatcher

    # on different commands - answer in Telegram
    dp.add_handler(CommandHandler("start", start))
    dp.add_handler(CommandHandler("help", halp))
    dp.add_handler(CommandHandler("fuck", fok))
    
    # YEE
    dp.add_handler(CommandHandler("print_routes", print_routes))
    dp.add_handler(CommandHandler("route", route, pass_args=True))

    # on noncommand i.e message - echo the message on Telegram
    dp.add_handler(MessageHandler(Filters.text, echo))

    # log all errors
    dp.add_error_handler(error_callback)

    # Start the Bot
    updater.start_polling()

    # Start input handler
    fd = sys.stdin.fileno() # = 0
    ih = Process(target=input_handler, args=(fd,))
    ih.start()
        
    print('Input handler started.')
    ih.join()
    
    # Run the bot until you press Ctrl-C or the process receives SIGINT,
    # SIGTERM or SIGABRT. This should be used most of the time, since
    # start_polling() is non-blocking and will stop the bot gracefully.
    print('Entering idle.')
    updater.idle()

    return 0

if __name__ == '__main__':
    import sys
    sys.exit(main(sys.argv[1]))