106 lines
3.8 KiB
Python
106 lines
3.8 KiB
Python
# Pyrogram - Telegram MTProto API Client Library for Python
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# Copyright (C) 2017-2019 Dan Tès <https://github.com/delivrance>
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#
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# This file is part of Pyrogram.
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#
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# Pyrogram is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as published
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# by the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Pyrogram is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with Pyrogram. If not, see <http://www.gnu.org/licenses/>.
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import logging
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import time
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from typing import Union, List
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import pyrogram
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from pyrogram.api import functions
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from pyrogram.client.ext import utils
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from pyrogram.errors import FloodWait
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from ...ext import BaseClient
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log = logging.getLogger(__name__)
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class GetHistory(BaseClient):
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def get_history(
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self,
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chat_id: Union[int, str],
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limit: int = 100,
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offset: int = 0,
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offset_id: int = 0,
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offset_date: int = 0,
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reverse: bool = False
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) -> List["pyrogram.Message"]:
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"""Retrieve a chunk of the history of a chat.
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You can get up to 100 messages at once.
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For a more convenient way of getting a chat history see :meth:`~Client.iter_history`.
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Parameters:
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chat_id (``int`` | ``str``):
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Unique identifier (int) or username (str) of the target chat.
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For your personal cloud (Saved Messages) you can simply use "me" or "self".
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For a contact that exists in your Telegram address book you can use his phone number (str).
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limit (``int``, *optional*):
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Limits the number of messages to be retrieved.
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By default, the first 100 messages are returned.
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offset (``int``, *optional*):
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Sequential number of the first message to be returned. Defaults to 0 (most recent message).
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Negative values are also accepted and become useful in case you set offset_id or offset_date.
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offset_id (``int``, *optional*):
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Pass a message identifier as offset to retrieve only older messages starting from that message.
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offset_date (``int``, *optional*):
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Pass a date in Unix time as offset to retrieve only older messages starting from that date.
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reverse (``bool``, *optional*):
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Pass True to retrieve the messages in reversed order (from older to most recent).
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Returns:
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List of :obj:`Message` - On success, a list of the retrieved messages is returned.
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Raises:
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RPCError: In case of a Telegram RPC error.
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"""
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offset_id = offset_id or (1 if reverse else 0)
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while True:
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try:
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messages = utils.parse_messages(
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self,
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self.send(
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functions.messages.GetHistory(
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peer=self.resolve_peer(chat_id),
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offset_id=offset_id,
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offset_date=offset_date,
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add_offset=offset * (-1 if reverse else 1) - (limit if reverse else 0),
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limit=limit,
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max_id=0,
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min_id=0,
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hash=0
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)
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)
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)
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except FloodWait as e:
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log.warning("Sleeping for {}s".format(e.x))
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time.sleep(e.x)
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else:
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break
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if reverse:
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messages.reverse()
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return messages
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