2018-12-28 13:08:09 +00:00
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# Pyrogram - Telegram MTProto API Client Library for Python
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# Copyright (C) 2017-2019 Dan Tès <https://github.com/delivrance>
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#
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# This file is part of Pyrogram.
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#
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# Pyrogram is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as published
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# by 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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# Pyrogram 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 General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with Pyrogram. If not, see <http://www.gnu.org/licenses/>.
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import pyrogram
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from pyrogram.api import functions, types
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from ...ext import BaseClient
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class GetChatPreview(BaseClient):
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2019-03-16 18:23:23 +00:00
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def get_chat_preview(
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self,
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invite_link: str
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):
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2018-12-28 13:08:09 +00:00
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"""Use this method to get the preview of a chat using the invite link.
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This method only returns a chat preview, if you want to join a chat use :meth:`join_chat`
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Args:
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invite_link (``str``):
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Unique identifier for the target chat in form of *t.me/joinchat/* links.
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Returns:
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Either :obj:`Chat` or :obj:`ChatPreview`, depending on whether you already joined the chat or not.
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Raises:
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:class:`Error <pyrogram.Error>` in case of a Telegram RPC error.
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``ValueError`` in case of an invalid invite_link.
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"""
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match = self.INVITE_LINK_RE.match(invite_link)
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if match:
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r = self.send(
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functions.messages.CheckChatInvite(
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hash=match.group(1)
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)
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)
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if isinstance(r, types.ChatInvite):
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return pyrogram.ChatPreview._parse(self, r)
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if isinstance(r, types.ChatInviteAlready):
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chat = r.chat
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if isinstance(chat, types.Chat):
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return pyrogram.Chat._parse_chat_chat(self, chat)
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if isinstance(chat, types.Channel):
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return pyrogram.Chat._parse_channel_chat(self, chat)
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else:
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raise ValueError("The invite_link is invalid")
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