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


class GetDialogsCount(BaseClient):
    async def get_dialogs_count(self, pinned_only: bool = False) -> int:
        """Get the total count of your dialogs.

        pinned_only (``bool``, *optional*):
            Pass True if you want to count only pinned dialogs.
            Defaults to False.

        Returns:
            ``int``: On success, the dialogs count is returned.

        Raises:
            RPCError: In case of a Telegram RPC error.
        """

        if pinned_only:
            return len((await self.send(functions.messages.GetPinnedDialogs(folder_id=0))).dialogs)
        else:
            r = await self.send(
                functions.messages.GetDialogs(
                    offset_date=0,
                    offset_id=0,
                    offset_peer=types.InputPeerEmpty(),
                    limit=1,
                    hash=0
                )
            )

            if isinstance(r, types.messages.Dialogs):
                return len(r.dialogs)
            else:
                return r.count