# 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 ReadHistory(BaseClient):
    def read_history(
        self,
        chat_id: Union[int, str],
        max_id: int = 0
    ) -> bool:
        """Mark a chat's message history as read.

        Parameters:
            chat_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).

            max_id (``int``, *optional*):
                The id of the last message you want to mark as read; all the messages before this one will be marked as
                read as well. Defaults to 0 (mark every unread message as read).

        Returns:
            ``bool`` - On success, True is returned.

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

        peer = self.resolve_peer(chat_id)

        if isinstance(peer, types.InputPeerChannel):
            q = functions.channels.ReadHistory(
                channel=peer,
                max_id=max_id
            )
        else:
            q = functions.messages.ReadHistory(
                peer=peer,
                max_id=max_id
            )

        self.send(q)

        return True