starkfunc.py

#    Copyright (C) Midhun KM 2020-2021
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU Affero General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#
#    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 Affero General Public License for more details.
#
#    You should have received a copy of the GNU Affero General Public License
#    along with this program.  If not, see <https://www.gnu.org/licenses/>.

from telethon import Button, custom, events, functions
import telethon

async def check_if_subbed(channel_id, event, bot):
    try:
            result = await bot(
                functions.channels.GetParticipantRequest(
                    channel=channel_id, user_id=event.sender_id
                )
            )
            if result.participant:
                return True
    except telethon.errors.rpcerrorlist.UserNotParticipantError:
        return False