# Pyrogram - Telegram MTProto API Client Library for Python
# Copyright (C) 2017-2019 Dan Tès <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.api import functions, types
from ...ext import BaseClient


class DeleteChatPhoto(BaseClient):
    async def delete_chat_photo(
        self,
        chat_id: Union[int, str]
    ) -> bool:
        """Delete a chat photo.
        Photos can't be changed for private chats.
        You must be an administrator in the chat for this to work and must have the appropriate admin rights.

        Note:
            In regular groups (non-supergroups), this method will only work if the "All Members Are Admins"
            setting is off.

        Parameters:
            chat_id (``int`` | ``str``):
                Unique identifier (int) or username (str) of the target chat.

        Returns:
            ``bool``: True on success.

        Raises:
            RPCError: In case of a Telegram RPC error.
            ``ValueError`` if a chat_id belongs to user.
        """
        peer = await self.resolve_peer(chat_id)

        if isinstance(peer, types.InputPeerChat):
            await self.send(
                functions.messages.EditChatPhoto(
                    chat_id=peer.chat_id,
                    photo=types.InputChatPhotoEmpty()
                )
            )
        elif isinstance(peer, types.InputPeerChannel):
            await self.send(
                functions.channels.EditPhoto(
                    channel=peer,
                    photo=types.InputChatPhotoEmpty()
                )
            )
        else:
            raise ValueError("The chat_id \"{}\" belongs to a user".format(chat_id))

        return True