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https://github.com/python-telegram-bot/python-telegram-bot.git
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271 lines
11 KiB
Python
271 lines
11 KiB
Python
#!/usr/bin/env python
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# pylint: disable=R0903
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#
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# A library that provides a Python interface to the Telegram Bot API
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# Copyright (C) 2015-2021
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# Leandro Toledo de Souza <devs@python-telegram-bot.org>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser Public License for more details.
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#
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# You should have received a copy of the GNU Lesser Public License
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# along with this program. If not, see [http://www.gnu.org/licenses/].
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"""This module contains an object that represents a Telegram Poll."""
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import datetime
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import sys
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from typing import TYPE_CHECKING, Any, Dict, List, Optional, ClassVar
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from telegram import MessageEntity, TelegramObject, User, constants
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from telegram.utils.helpers import from_timestamp, to_timestamp
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from telegram.utils.types import JSONDict
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if TYPE_CHECKING:
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from telegram import Bot
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class PollOption(TelegramObject):
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"""
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This object contains information about one answer option in a poll.
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Objects of this class are comparable in terms of equality. Two objects of this class are
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considered equal, if their :attr:`text` and :attr:`voter_count` are equal.
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Args:
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text (:obj:`str`): Option text, 1-100 characters.
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voter_count (:obj:`int`): Number of users that voted for this option.
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Attributes:
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text (:obj:`str`): Option text, 1-100 characters.
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voter_count (:obj:`int`): Number of users that voted for this option.
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"""
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def __init__(self, text: str, voter_count: int, **_kwargs: Any):
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self.text = text
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self.voter_count = voter_count
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self._id_attrs = (self.text, self.voter_count)
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MAX_LENGTH: ClassVar[int] = constants.MAX_POLL_OPTION_LENGTH
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""":const:`telegram.constants.MAX_POLL_OPTION_LENGTH`"""
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class PollAnswer(TelegramObject):
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"""
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This object represents an answer of a user in a non-anonymous poll.
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Objects of this class are comparable in terms of equality. Two objects of this class are
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considered equal, if their :attr:`poll_id`, :attr:`user` and :attr:`options_ids` are equal.
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Attributes:
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poll_id (:obj:`str`): Unique poll identifier.
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user (:class:`telegram.User`): The user, who changed the answer to the poll.
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option_ids (List[:obj:`int`]): Identifiers of answer options, chosen by the user.
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Args:
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poll_id (:obj:`str`): Unique poll identifier.
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user (:class:`telegram.User`): The user, who changed the answer to the poll.
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option_ids (List[:obj:`int`]): 0-based identifiers of answer options, chosen by the user.
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May be empty if the user retracted their vote.
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"""
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def __init__(self, poll_id: str, user: User, option_ids: List[int], **_kwargs: Any):
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self.poll_id = poll_id
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self.user = user
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self.option_ids = option_ids
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self._id_attrs = (self.poll_id, self.user, tuple(self.option_ids))
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@classmethod
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def de_json(cls, data: Optional[JSONDict], bot: 'Bot') -> Optional['PollAnswer']:
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data = cls.parse_data(data)
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if not data:
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return None
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data['user'] = User.de_json(data.get('user'), bot)
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return cls(**data)
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class Poll(TelegramObject):
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"""
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This object contains information about a poll.
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Objects of this class are comparable in terms of equality. Two objects of this class are
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considered equal, if their :attr:`id` is equal.
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Attributes:
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id (:obj:`str`): Unique poll identifier.
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question (:obj:`str`): Poll question, 1-300 characters.
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options (List[:class:`PollOption`]): List of poll options.
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total_voter_count (:obj:`int`): Total number of users that voted in the poll.
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is_closed (:obj:`bool`): :obj:`True`, if the poll is closed.
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is_anonymous (:obj:`bool`): :obj:`True`, if the poll is anonymous.
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type (:obj:`str`): Poll type, currently can be :attr:`REGULAR` or :attr:`QUIZ`.
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allows_multiple_answers (:obj:`bool`): :obj:`True`, if the poll allows multiple answers.
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correct_option_id (:obj:`int`): Optional. Identifier of the correct answer option.
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explanation (:obj:`str`): Optional. Text that is shown when a user chooses an incorrect
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answer or taps on the lamp icon in a quiz-style poll.
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explanation_entities (List[:class:`telegram.MessageEntity`]): Optional. Special entities
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like usernames, URLs, bot commands, etc. that appear in the :attr:`explanation`.
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open_period (:obj:`int`): Optional. Amount of time in seconds the poll will be active
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after creation.
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close_date (:obj:`datetime.datetime`): Optional. Point in time when the poll will be
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automatically closed.
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Args:
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id (:obj:`str`): Unique poll identifier.
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question (:obj:`str`): Poll question, 1-300 characters.
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options (List[:class:`PollOption`]): List of poll options.
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is_closed (:obj:`bool`): :obj:`True`, if the poll is closed.
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is_anonymous (:obj:`bool`): :obj:`True`, if the poll is anonymous.
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type (:obj:`str`): Poll type, currently can be :attr:`REGULAR` or :attr:`QUIZ`.
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allows_multiple_answers (:obj:`bool`): :obj:`True`, if the poll allows multiple answers.
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correct_option_id (:obj:`int`, optional): 0-based identifier of the correct answer option.
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Available only for polls in the quiz mode, which are closed, or was sent (not
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forwarded) by the bot or to the private chat with the bot.
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explanation (:obj:`str`, optional): Text that is shown when a user chooses an incorrect
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answer or taps on the lamp icon in a quiz-style poll, 0-200 characters.
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explanation_entities (List[:class:`telegram.MessageEntity`], optional): Special entities
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like usernames, URLs, bot commands, etc. that appear in the :attr:`explanation`.
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open_period (:obj:`int`, optional): Amount of time in seconds the poll will be active
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after creation.
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close_date (:obj:`datetime.datetime`, optional): Point in time (Unix timestamp) when the
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poll will be automatically closed. Converted to :obj:`datetime.datetime`.
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"""
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def __init__(
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self,
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id: str, # pylint: disable=W0622
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question: str,
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options: List[PollOption],
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total_voter_count: int,
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is_closed: bool,
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is_anonymous: bool,
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type: str, # pylint: disable=W0622
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allows_multiple_answers: bool,
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correct_option_id: int = None,
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explanation: str = None,
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explanation_entities: List[MessageEntity] = None,
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open_period: int = None,
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close_date: datetime.datetime = None,
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**_kwargs: Any,
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):
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self.id = id # pylint: disable=C0103
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self.question = question
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self.options = options
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self.total_voter_count = total_voter_count
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self.is_closed = is_closed
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self.is_anonymous = is_anonymous
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self.type = type
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self.allows_multiple_answers = allows_multiple_answers
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self.correct_option_id = correct_option_id
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self.explanation = explanation
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self.explanation_entities = explanation_entities
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self.open_period = open_period
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self.close_date = close_date
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self._id_attrs = (self.id,)
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@classmethod
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def de_json(cls, data: Optional[JSONDict], bot: 'Bot') -> Optional['Poll']:
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data = cls.parse_data(data)
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if not data:
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return None
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data['options'] = [PollOption.de_json(option, bot) for option in data['options']]
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data['explanation_entities'] = MessageEntity.de_list(data.get('explanation_entities'), bot)
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data['close_date'] = from_timestamp(data.get('close_date'))
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return cls(**data)
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def to_dict(self) -> JSONDict:
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data = super().to_dict()
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data['options'] = [x.to_dict() for x in self.options]
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if self.explanation_entities:
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data['explanation_entities'] = [e.to_dict() for e in self.explanation_entities]
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data['close_date'] = to_timestamp(data.get('close_date'))
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return data
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def parse_explanation_entity(self, entity: MessageEntity) -> str:
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"""Returns the text from a given :class:`telegram.MessageEntity`.
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Note:
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This method is present because Telegram calculates the offset and length in
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UTF-16 codepoint pairs, which some versions of Python don't handle automatically.
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(That is, you can't just slice ``Message.text`` with the offset and length.)
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Args:
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entity (:class:`telegram.MessageEntity`): The entity to extract the text from. It must
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be an entity that belongs to this message.
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Returns:
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:obj:`str`: The text of the given entity.
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Raises:
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RuntimeError: If the poll has no explanation.
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"""
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if not self.explanation:
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raise RuntimeError("This Poll has no 'explanation'.")
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# Is it a narrow build, if so we don't need to convert
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if sys.maxunicode == 0xFFFF:
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return self.explanation[entity.offset : entity.offset + entity.length]
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entity_text = self.explanation.encode('utf-16-le')
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entity_text = entity_text[entity.offset * 2 : (entity.offset + entity.length) * 2]
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return entity_text.decode('utf-16-le')
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def parse_explanation_entities(self, types: List[str] = None) -> Dict[MessageEntity, str]:
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"""
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Returns a :obj:`dict` that maps :class:`telegram.MessageEntity` to :obj:`str`.
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It contains entities from this polls explanation filtered by their ``type`` attribute as
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the key, and the text that each entity belongs to as the value of the :obj:`dict`.
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Note:
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This method should always be used instead of the :attr:`explanation_entities`
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attribute, since it calculates the correct substring from the message text based on
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UTF-16 codepoints. See :attr:`parse_explanation_entity` for more info.
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Args:
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types (List[:obj:`str`], optional): List of ``MessageEntity`` types as strings. If the
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``type`` attribute of an entity is contained in this list, it will be returned.
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Defaults to :attr:`telegram.MessageEntity.ALL_TYPES`.
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Returns:
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Dict[:class:`telegram.MessageEntity`, :obj:`str`]: A dictionary of entities mapped to
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the text that belongs to them, calculated based on UTF-16 codepoints.
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"""
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if types is None:
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types = MessageEntity.ALL_TYPES
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return {
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entity: self.parse_explanation_entity(entity)
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for entity in (self.explanation_entities or [])
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if entity.type in types
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}
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REGULAR: ClassVar[str] = constants.POLL_REGULAR
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""":const:`telegram.constants.POLL_REGULAR`"""
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QUIZ: ClassVar[str] = constants.POLL_QUIZ
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""":const:`telegram.constants.POLL_QUIZ`"""
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MAX_QUESTION_LENGTH: ClassVar[int] = constants.MAX_POLL_QUESTION_LENGTH
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""":const:`telegram.constants.MAX_POLL_QUESTION_LENGTH`"""
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MAX_OPTION_LENGTH: ClassVar[int] = constants.MAX_POLL_OPTION_LENGTH
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""":const:`telegram.constants.MAX_POLL_OPTION_LENGTH`"""
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