Telethon/telethon/client/chats.py

188 lines
7.2 KiB
Python
Raw Normal View History

from collections import UserList
2018-06-10 22:50:28 +03:00
from async_generator import async_generator, yield_
from .users import UserMethods
from .. import utils
from ..tl import types, functions
class ChatMethods(UserMethods):
# region Public methods
2018-06-10 22:50:28 +03:00
@async_generator
async def iter_participants(
self, entity, limit=None, search='',
filter=None, aggressive=False, _total=None):
"""
Iterator over the participants belonging to the specified chat.
Args:
entity (`entity`):
The entity from which to retrieve the participants list.
limit (`int`):
Limits amount of participants fetched.
search (`str`, optional):
Look for participants with this string in name/username.
filter (:tl:`ChannelParticipantsFilter`, optional):
The filter to be used, if you want e.g. only admins
Note that you might not have permissions for some filter.
This has no effect for normal chats or users.
aggressive (`bool`, optional):
Aggressively looks for all participants in the chat in
order to get more than 10,000 members (a hard limit
imposed by Telegram). Note that this might take a long
time (over 5 minutes), but is able to return over 90,000
participants on groups with 100,000 members.
This has no effect for groups or channels with less than
10,000 members, or if a ``filter`` is given.
_total (`list`, optional):
A single-item list to pass the total parameter by reference.
Yields:
The :tl:`User` objects returned by :tl:`GetParticipantsRequest`
with an additional ``.participant`` attribute which is the
matched :tl:`ChannelParticipant` type for channels/megagroups
or :tl:`ChatParticipants` for normal chats.
"""
if isinstance(filter, type):
if filter in (types.ChannelParticipantsBanned,
types.ChannelParticipantsKicked,
types.ChannelParticipantsSearch):
# These require a `q` parameter (support types for convenience)
filter = filter('')
else:
filter = filter()
entity = await self.get_input_entity(entity)
if search and (filter
or not isinstance(entity, types.InputPeerChannel)):
# We need to 'search' ourselves unless we have a PeerChannel
search = search.lower()
def filter_entity(ent):
return search in utils.get_display_name(ent).lower() or\
search in (getattr(ent, 'username', '') or None).lower()
else:
def filter_entity(ent):
return True
limit = float('inf') if limit is None else int(limit)
if isinstance(entity, types.InputPeerChannel):
if _total or (aggressive and not filter):
total = (await self(functions.channels.GetFullChannelRequest(
entity
))).full_chat.participants_count
if _total:
_total[0] = total
else:
total = 0
if limit == 0:
return
seen = set()
if total > 10000 and aggressive and not filter:
requests = [functions.channels.GetParticipantsRequest(
channel=entity,
filter=types.ChannelParticipantsSearch(search + chr(x)),
offset=0,
limit=200,
hash=0
) for x in range(ord('a'), ord('z') + 1)]
else:
requests = [functions.channels.GetParticipantsRequest(
channel=entity,
filter=filter or types.ChannelParticipantsSearch(search),
offset=0,
limit=200,
hash=0
)]
while requests:
# Only care about the limit for the first request
# (small amount of people, won't be aggressive).
#
# Most people won't care about getting exactly 12,345
# members so it doesn't really matter not to be 100%
# precise with being out of the offset/limit here.
requests[0].limit = min(limit - requests[0].offset, 200)
if requests[0].offset > limit:
break
results = await self(requests)
for i in reversed(range(len(requests))):
participants = results[i]
if not participants.users:
requests.pop(i)
else:
requests[i].offset += len(participants.participants)
users = {user.id: user for user in participants.users}
for participant in participants.participants:
user = users[participant.user_id]
if not filter_entity(user) or user.id in seen:
continue
seen.add(participant.user_id)
user = users[participant.user_id]
user.participant = participant
2018-06-10 22:50:28 +03:00
await yield_(user)
if len(seen) >= limit:
return
elif isinstance(entity, types.InputPeerChat):
full = await self(
functions.messages.GetFullChatRequest(entity.chat_id))
if not isinstance(
full.full_chat.participants, types.ChatParticipants):
# ChatParticipantsForbidden won't have ``.participants``
_total[0] = 0
return
if _total:
_total[0] = len(full.full_chat.participants.participants)
have = 0
users = {user.id: user for user in full.users}
for participant in full.full_chat.participants.participants:
user = users[participant.user_id]
if not filter_entity(user):
continue
have += 1
if have > limit:
break
else:
user = users[participant.user_id]
user.participant = participant
2018-06-10 22:50:28 +03:00
await yield_(user)
else:
if _total:
_total[0] = 1
if limit != 0:
user = await self.get_entity(entity)
if filter_entity(user):
user.participant = None
2018-06-10 22:50:28 +03:00
await yield_(user)
async def get_participants(self, *args, **kwargs):
"""
Same as :meth:`iter_participants`, but returns a list instead
with an additional ``.total`` attribute on the list.
"""
total = [0]
kwargs['_total'] = total
participants = UserList()
async for x in self.iter_participants(*args, **kwargs):
participants.append(x)
participants.total = total[0]
return participants
# endregion