# 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

import pyrogram
from pyrogram.api import functions, types
from ...ext import BaseClient


class GetCommonChats(BaseClient):
    def get_common_chats(self, user_id: Union[int, str]) -> list:
        """Get the common chats you have with a user.

        Parameters:
            user_id (``int`` | ``str``):
                Unique identifier (int) or username (str) of the target chat.
                For your personal cloud (Saved Messages) you can simply use "me" or "self".
                For a contact that exists in your Telegram address book you can use his phone number (str).

        Returns:
            List of :obj:`Chat`: On success, a list of the common chats is returned.
            
        Raises:
            ValueError: If the user_id doesn't belong to a user.

        Example:
            .. code-block:: python

                common = app.get_common_chats("haskell")
                print(common)
        """

        peer = self.resolve_peer(user_id)

        if isinstance(peer, types.InputPeerUser):
            r = self.send(
                functions.messages.GetCommonChats(
                    user_id=peer,
                    max_id=0,
                    limit=100,
                )
            )

            return pyrogram.List([pyrogram.Chat._parse_chat(self, x) for x in r.chats])
        
        raise ValueError('The user_id "{}" doesn\'t belong to a user'.format(user_id))