#!/usr/bin/env python
#
# A library that provides a Python interface to the Telegram Bot API
# Copyright (C) 2015-2020
# Leandro Toledo de Souza <devs@python-telegram-bot.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser Public License as published by
# the Free Software Foundation, either version 3 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 Lesser Public License for more details.
#
# You should have received a copy of the GNU Lesser Public License
# along with this program.  If not, see [http://www.gnu.org/licenses/].
"""This module contains an object that represents a Telegram PreCheckoutQuery."""

from telegram import TelegramObject, User, OrderInfo


class PreCheckoutQuery(TelegramObject):
    """This object contains information about an incoming pre-checkout query.

    Note:
        * In Python `from` is a reserved word, use `from_user` instead.

    Attributes:
        id (:obj:`str`): Unique query identifier.
        from_user (:class:`telegram.User`): User who sent the query.
        currency (:obj:`str`): Three-letter ISO 4217 currency code.
        total_amount (:obj:`int`): Total price in the smallest units of the currency.
        invoice_payload (:obj:`str`): Bot specified invoice payload.
        shipping_option_id (:obj:`str`): Optional. Identifier of the shipping option chosen by the
            user.
        order_info (:class:`telegram.OrderInfo`): Optional. Order info provided by the user.
        bot (:class:`telegram.Bot`): Optional. The Bot to use for instance methods.

    Args:
        id (:obj:`str`): Unique query identifier.
        from_user (:class:`telegram.User`): User who sent the query.
        currency (:obj:`str`): Three-letter ISO 4217 currency code.
        total_amount (:obj:`int`): Total price in the smallest units of the currency (integer, not
            float/double). For example, for a price of US$ 1.45 pass ``amount = 145``.
            See the :obj:`exp` parameter in
            `currencies.json <https://core.telegram.org/bots/payments/currencies.json>`_,
            it shows the number of digits past the decimal point for each currency
            (2 for the majority of currencies).
        invoice_payload (:obj:`str`): Bot specified invoice payload.
        shipping_option_id (:obj:`str`, optional): Identifier of the shipping option chosen by the
            user.
        order_info (:class:`telegram.OrderInfo`, optional): Order info provided by the user.
        bot (:class:`telegram.Bot`, optional): The Bot to use for instance methods.
        **kwargs (:obj:`dict`): Arbitrary keyword arguments.

    """

    def __init__(self,
                 id,
                 from_user,
                 currency,
                 total_amount,
                 invoice_payload,
                 shipping_option_id=None,
                 order_info=None,
                 bot=None,
                 **kwargs):
        self.id = id
        self.from_user = from_user
        self.currency = currency
        self.total_amount = total_amount
        self.invoice_payload = invoice_payload
        self.shipping_option_id = shipping_option_id
        self.order_info = order_info

        self.bot = bot

        self._id_attrs = (self.id,)

    @classmethod
    def de_json(cls, data, bot):
        if not data:
            return None

        data = super().de_json(data, bot)

        data['from_user'] = User.de_json(data.pop('from'), bot)
        data['order_info'] = OrderInfo.de_json(data.get('order_info'), bot)

        return cls(bot=bot, **data)

    def answer(self, *args, **kwargs):
        """Shortcut for::

            bot.answer_pre_checkout_query(update.pre_checkout_query.id, *args, **kwargs)

        Args:
            ok (:obj:`bool`): Specify :obj:`True` if everything is alright
                (goods are available, etc.) and the bot is ready to proceed with the order.
                Use :obj:`False` if there are any problems.
            error_message (:obj:`str`, optional): Required if ok is :obj:`False`. Error message in
                human readable form that explains the reason for failure to proceed with the
                checkout (e.g. "Sorry, somebody just bought the last of our amazing black T-shirts
                while you were busy filling out your payment details. Please choose a different
                color or garment!"). Telegram will display this message to the user.
            **kwargs (:obj:`dict`): Arbitrary keyword arguments.

        """
        return self.bot.answer_pre_checkout_query(self.id, *args, **kwargs)