from telegram import (ReplyKeyboardMarkup, ReplyKeyboardRemove, InlineKeyboardButton, InlineKeyboardMarkup, CallbackQuery)
from telegram.ext import (Updater, CommandHandler, MessageHandler, Filters, RegexHandler,
                          ConversationHandler, CallbackQueryHandler)

import logging

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

logger = logging.getLogger(__name__)

USERNAME, PASSWORD = range(2)


def start(bot, update):
    reply_keyboard = [['Boy', 'Girl', 'Other']]

    update.message.reply_text(
        'Hi! I am a bot. I will hold a conversation with you. '
        'Send /cancel to stop talking to me.\n\n'
        'I will log you into classeviva!\n\n'
        'Send me your username or email!')

    return USERNAME


def username(bot, update):
    button_list = [[InlineKeyboardButton("Riprova", callback_data='riprova')]]
    reply_retry = InlineKeyboardMarkup(button_list)

    user = update.message.from_user
    logger.info("Username of %s: %s", user.first_name, update.message.text)
    update.message.reply_text('If it is correct send me you password',
                              reply_markup=reply_retry)
    if update.callback_query.data == 'riprova':
        return USERNAME
    else:
        return PASSWORD


def password(bot, update):
    user = update.message.from_user
    logger.info("Password of %s: %s", user.first_name, update.message.text)


def cancel(bot, update):
    user = update.message.from_user
    logger.info("User %s canceled the conversation.", user.first_name)
    update.message.reply_text('Bye! I hope we can talk again some day.',
                              reply_markup=ReplyKeyboardRemove())

    return ConversationHandler.END


def error(bot, update, error):
    """Log Errors caused by Updates."""
    logger.warning('Update "%s" caused error "%s"', update, error)


def main():
    updater = Updater("")
        dp = updater.dispatcher


    conv_handler = ConversationHandler(
        entry_points=[CommandHandler('start', start)],

        states={
            USERNAME: [MessageHandler(Filters.text, us LOCATION, BIOername),
                        CallbackQueryHandler(username, pass_user_data=True)],

            PASSWORD: [MessageHandler(Filters.text, password)],

        },

        fallbacks=[CommandHandler('cancel', cancel)]
    )

    dp.add_handler(conv_handler)
    dp.add_error_handler(error)
    updater.start_polling()
    updater.idle()


if __name__ == '__main__':
    main()