Telegram_bot.py

from telegram.ext import Updater, MessageHandler, CommandHandler, Filters, CallbackQueryHandler
import logging

class Telegram_bot(object):

	## Constructor
	## Issue : What's the correct way of handling imports ?
	def __init__(self, Token):
		self.updater = Updater(token = Token)
		self.dispatcher = self.updater.dispatcher

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

	## Specific start message (Particular case of adding function)
	def define_start_message(self, message):
		def start(bot, update):
			bot.sendMessage(chat_id=update.message.chat_id, text=message)

		start_handler = CommandHandler('start', start)
		self.dispatcher.add_handler(start_handler)

	## Add a function to current bot
	def add_function(self, function, name):
		function_handler = CommandHandler(name, function, pass_args=True)
		self.dispatcher.add_handler(function_handler)

	def add_callback_query(self, callback):
		callback_handler = CallbackQueryHandler(callback)
		self.dispatcher.add_handler(callback_handler)

	## Add message handling, i.e. the bot answer based on messaged and
	## not on functions.
	def add_message_handling():
		return

	## Start bot !
	def run(self):
		self.updater.start_polling()
		self.updater.idle()

	## Function to define a message to raise-up when non-existing function
	## gets called
	def define_error_message(self, message):
		def unknown(bot, update):
			bot.sendMessage(chat_id=update.message.chat_id, text=message)
		unknown_handler = MessageHandler(Filters.command, unknown)
		self.dispatcher.add_handler(unknown_handler)