# 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/>.

import logging
import time

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

log = logging.getLogger(__name__)


class GetDialogs(BaseClient):
    def get_dialogs(
        self,
        offset_date: int = 0,
        limit: int = 100,
        pinned_only: bool = False
    ) -> "pyrogram.Dialogs":
        """Use this method to get a chunk of the user's dialogs.

        You can get up to 100 dialogs at once.
        For a more convenient way of getting a user's dialogs see :meth:`iter_dialogs`.

        Parameters:
            offset_date (``int``):
                The offset date in Unix time taken from the top message of a :obj:`Dialog`.
                Defaults to 0. Valid for non-pinned dialogs only.

            limit (``str``, *optional*):
                Limits the number of dialogs to be retrieved.
                Defaults to 100. Valid for non-pinned dialogs only.

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

        Returns:
            :obj:`Dialogs`: On success, an object containing a list of dialogs is returned.

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

        while True:
            try:
                if pinned_only:
                    r = self.send(functions.messages.GetPinnedDialogs())
                else:
                    r = self.send(
                        functions.messages.GetDialogs(
                            offset_date=offset_date,
                            offset_id=0,
                            offset_peer=types.InputPeerEmpty(),
                            limit=limit,
                            hash=0,
                            exclude_pinned=True
                        )
                    )
            except FloodWait as e:
                log.warning("Sleeping {}s".format(e.x))
                time.sleep(e.x)
            else:
                break

        return pyrogram.Dialogs._parse(self, r)