# Pyrogram - Telegram MTProto API Client Library for Python

# Copyright (C) 2017-2021 Dan <https://github.com/delivrance>

#

# This file is part of Pyrogram.

#

# Pyrogram 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.

#

# Pyrogram 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 Pyrogram. If not, see <http://www.gnu.org/licenses/>.

from typing import Union

from pyrogram import raw

from pyrogram.scaffold import Scaffold

class DeleteChatPhoto(Scaffold):

async def delete_chat_photo(

self,

chat_id: Union[int, str]

) -> bool:

"""Delete a chat photo.

You must be an administrator in the chat for this to work and must have the appropriate admin rights.

Parameters:

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

Unique identifier (int) or username (str) of the target chat.

Returns:

``bool``: True on success.

Raises:

ValueError: if a chat_id belongs to user.

Example:

.. code-block:: python

app.delete_chat_photo(chat_id)

"""

peer = await self.resolve_peer(chat_id)

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

await self.send(

raw.functions.messages.EditChatPhoto(

chat_id=peer.chat_id,

photo=raw.types.InputChatPhotoEmpty()

)

)

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

await self.send(

raw.functions.channels.EditPhoto(

channel=peer,

photo=raw.types.InputChatPhotoEmpty()

)

)

else:

raise ValueError(f'The chat_id "{chat_id}" belongs to a user')

return True