README.md edited

.venv/lib/python3.10/site-packages/telegram/ext/_handlers/businessconnectionhandler.py

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+#!/usr/bin/env python
+#
+# A library that provides a Python interface to the Telegram Bot API
+# Copyright (C) 2015-2024
+# 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 the BusinessConnectionHandler class."""
+from typing import Optional, TypeVar
+
+from telegram import Update
+from telegram._utils.defaultvalue import DEFAULT_TRUE
+from telegram._utils.types import SCT, DVType
+from telegram.ext._handlers.basehandler import BaseHandler
+from telegram.ext._utils._update_parsing import parse_chat_id, parse_username
+from telegram.ext._utils.types import CCT, HandlerCallback
+
+RT = TypeVar("RT")
+
+
+class BusinessConnectionHandler(BaseHandler[Update, CCT, RT]):
+    """Handler class to handle Telegram
+    :attr:`Business Connections <telegram.Update.business_connection>`.
+
+    .. versionadded:: 21.1
+
+    Args:
+        callback (:term:`coroutine function`): The callback function for this handler. Will be
+            called when :meth:`check_update` has determined that an update should be processed by
+            this handler. Callback signature::
+
+                async def callback(update: Update, context: CallbackContext)
+        user_id (:obj:`int` | Collection[:obj:`int`], optional): Filters requests to allow only
+            those which are from the specified user ID(s).
+
+        username (:obj:`str` | Collection[:obj:`str`], optional): Filters requests to allow only
+            those which are from the specified username(s).
+
+        block (:obj:`bool`, optional): Determines whether the return value of the callback should
+            be awaited before processing the next handler in
+            :meth:`telegram.ext.Application.process_update`. Defaults to :obj:`True`.
+
+            .. seealso:: :wiki:`Concurrency`
+    Attributes:
+        callback (:term:`coroutine function`): The callback function for this handler.
+        block (:obj:`bool`): Determines whether the return value of the callback should be
+            awaited before processing the next handler in
+            :meth:`telegram.ext.Application.process_update`.
+    """
+
+    __slots__ = (
+        "_user_ids",
+        "_usernames",
+    )
+
+    def __init__(
+        self: "BusinessConnectionHandler[CCT, RT]",
+        callback: HandlerCallback[Update, CCT, RT],
+        user_id: Optional[SCT[int]] = None,
+        username: Optional[SCT[str]] = None,
+        block: DVType[bool] = DEFAULT_TRUE,
+    ):
+        super().__init__(callback, block=block)
+
+        self._user_ids = parse_chat_id(user_id)
+        self._usernames = parse_username(username)
+
+    def check_update(self, update: object) -> bool:
+        """Determines whether an update should be passed to this handler's :attr:`callback`.
+
+        Args:
+            update (:class:`telegram.Update` | :obj:`object`): Incoming update.
+
+        Returns:
+            :obj:`bool`
+
+        """
+        if isinstance(update, Update) and update.business_connection:
+            if not self._user_ids and not self._usernames:
+                return True
+            if update.business_connection.user.id in self._user_ids:
+                return True
+            return update.business_connection.user.username in self._usernames
+        return False