# Hydrogram - Telegram MTProto API Client Library for Python

# Copyright (C) 2017-2023 Dan <https://github.com/delivrance>

# Copyright (C) 2023-present Hydrogram <https://hydrogram.org>

#

# This file is part of Hydrogram.

#

# Hydrogram is free software: you can redistribute it and/or modify

# it under the terms of the GNU Lesser General Public License as published

# by the Free Software Foundation, either version 3 of the License, or

# (at your option) any later version.

#

# Hydrogram 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 General Public License for more details.

#

# You should have received a copy of the GNU Lesser General Public License

# along with Hydrogram. If not, see <http://www.gnu.org/licenses/>.

from __future__ import annotations

import hydrogram

from hydrogram import raw

class LeaveChat:

async def leave_chat(self: hydrogram.Client, chat_id: int | str, delete: bool = False):

"""Leave a group chat or channel.

.. include:: /_includes/usable-by/users-bots.rst

Parameters:

chat_id (``int`` | ``str``):

Unique identifier for the target chat or username of the target channel/supergroup

(in the format @username).

delete (``bool``, *optional*):

Deletes the group chat dialog after leaving (for simple group chats, not supergroups).

Defaults to False.

Example:

.. code-block:: python

# Leave chat or channel

await app.leave_chat(chat_id)

# Leave basic chat and also delete the dialog

await app.leave_chat(chat_id, delete=True)

"""

peer = await self.resolve_peer(chat_id)

if isinstance(peer, raw.types.InputPeerChannel):

return await self.invoke(

raw.functions.channels.LeaveChannel(channel=await self.resolve_peer(chat_id))

)

if isinstance(peer, raw.types.InputPeerChat):

r = await self.invoke(

raw.functions.messages.DeleteChatUser(

chat_id=peer.chat_id, user_id=raw.types.InputUserSelf()

)

)

if delete:

await self.invoke(raw.functions.messages.DeleteHistory(peer=peer, max_id=0))

return r

return None