#!/usr/bin/env python
# -*- coding: utf-8 -*-
# This program is dedicated to the public domain under the CC0 license.

"""
Basic example for a bot that uses inline keyboards.
"""
import logging

from telegram import InlineKeyboardButton, InlineKeyboardMarkup
from telegram.ext import Updater, CommandHandler, CallbackQueryHandler

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


def start(update, context):
    keyboard = [
        [
            InlineKeyboardButton("Option 1", callback_data='1'),
            InlineKeyboardButton("Option 2", callback_data='2'),
        ],
        [InlineKeyboardButton("Option 3", callback_data='3')],
    ]

    reply_markup = InlineKeyboardMarkup(keyboard)

    update.message.reply_text('Please choose:', reply_markup=reply_markup)


def button(update, context):
    query = update.callback_query

    # CallbackQueries need to be answered, even if no notification to the user is needed
    # Some clients may have trouble otherwise. See https://core.telegram.org/bots/api#callbackquery
    query.answer()

    query.edit_message_text(text="Selected option: {}".format(query.data))


def help_command(update, context):
    update.message.reply_text("Use /start to test this bot.")


def main():
    # Create the Updater and pass it your bot's token.
    # Make sure to set use_context=True to use the new context based callbacks
    # Post version 12 this will no longer be necessary
    updater = Updater("TOKEN", use_context=True)

    updater.dispatcher.add_handler(CommandHandler('start', start))
    updater.dispatcher.add_handler(CallbackQueryHandler(button))
    updater.dispatcher.add_handler(CommandHandler('help', help_command))

    # Start the Bot
    updater.start_polling()

    # Run the bot until the user presses Ctrl-C or the process receives SIGINT,
    # SIGTERM or SIGABRT
    updater.idle()


if __name__ == '__main__':
    main()