#  Pyrogram - Telegram MTProto API Client Library for Python
#  Copyright (C) 2017-2020 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, Optional

from pyrogram import raw
from pyrogram.scaffold import Scaffold


class SetSlowMode(Scaffold):
    async def set_slow_mode(
        self,
        chat_id: Union[int, str],
        seconds: Optional[int]
    ) -> bool:
        """Set the slow mode interval for a chat.

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

            seconds (``int`` | ``None``):
                Seconds in which members will be able to send only one message per this interval.
                Valid values are: 0 or None (off), 10, 30, 60 (1m), 300 (5m), 900 (15m) or 3600 (1h).

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

        Example:
            .. code-block:: python

                # Set slow mode to 60 seconds
                app.set_slow_mode("pyrogramchat", 60)

                # Disable slow mode
                app.set_slow_mode("pyrogramchat", None)
        """

        await self.send(
            raw.functions.channels.ToggleSlowMode(
                channel=await self.resolve_peer(chat_id),
                seconds=0 if seconds is None else seconds
            )
        )

        return True