mirror of
https://github.com/LonamiWebs/Telethon.git
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222 lines
8.9 KiB
Python
222 lines
8.9 KiB
Python
import asyncio
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import re
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from .common import EventBuilder, EventCommon, name_inner_event, _into_id_set
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from ..tl import types
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@name_inner_event
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class NewMessage(EventBuilder):
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"""
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Represents a new message event builder.
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Args:
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incoming (`bool`, optional):
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If set to ``True``, only **incoming** messages will be handled.
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Mutually exclusive with ``outgoing`` (can only set one of either).
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outgoing (`bool`, optional):
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If set to ``True``, only **outgoing** messages will be handled.
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Mutually exclusive with ``incoming`` (can only set one of either).
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from_users (`entity`, optional):
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Unlike `chats`, this parameter filters the *sender* of the message.
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That is, only messages *sent by this user* will be handled. Use
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`chats` if you want private messages with this/these users.
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`from_users` lets you filter by messages sent by one or more users
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across the desired chats.
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forwards (`bool`, optional):
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Whether forwarded messages should be handled or not. By default,
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both forwarded and normal messages are included. If it's ``True``
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*only* forwards will be handled. If it's ``False`` only messages
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that are *not* forwards will be handled.
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pattern (`str`, `callable`, `Pattern`, optional):
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If set, only messages matching this pattern will be handled.
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You can specify a regex-like string which will be matched
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against the message, a callable function that returns ``True``
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if a message is acceptable, or a compiled regex pattern.
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"""
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def __init__(self, chats=None, *, blacklist_chats=False,
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incoming=None, outgoing=None,
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from_users=None, forwards=None, pattern=None):
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if incoming and outgoing:
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incoming = outgoing = None # Same as no filter
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elif incoming is not None and outgoing is None:
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outgoing = not incoming
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elif outgoing is not None and incoming is None:
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incoming = not outgoing
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elif all(x is not None and not x for x in (incoming, outgoing)):
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raise ValueError("Don't create an event handler if you "
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"don't want neither incoming or outgoing!")
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super().__init__(chats=chats, blacklist_chats=blacklist_chats)
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self.incoming = incoming
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self.outgoing = outgoing
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self.from_users = from_users
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self.forwards = forwards
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if isinstance(pattern, str):
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self.pattern = re.compile(pattern).match
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elif not pattern or callable(pattern):
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self.pattern = pattern
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elif hasattr(pattern, 'match') and callable(pattern.match):
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self.pattern = pattern.match
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else:
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raise TypeError('Invalid pattern type given')
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# Should we short-circuit? E.g. perform no check at all
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self._no_check = all(x is None for x in (
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self.chats, self.incoming, self.outgoing, self.pattern,
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self.from_users, self.forwards, self.from_users
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))
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async def resolve(self, client):
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if not self.resolved.is_set():
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self.from_users = await _into_id_set(client, self.from_users)
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await super().resolve(client)
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@classmethod
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def build(cls, update):
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if isinstance(update,
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(types.UpdateNewMessage, types.UpdateNewChannelMessage)):
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if not isinstance(update.message, types.Message):
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return # We don't care about MessageService's here
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event = cls.Event(update.message)
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elif isinstance(update, types.UpdateShortMessage):
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event = cls.Event(types.Message(
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out=update.out,
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mentioned=update.mentioned,
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media_unread=update.media_unread,
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silent=update.silent,
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id=update.id,
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# Note that to_id/from_id complement each other in private
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# messages, depending on whether the message was outgoing.
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to_id=types.PeerUser(
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update.user_id if update.out else cls.self_id
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),
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from_id=cls.self_id if update.out else update.user_id,
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message=update.message,
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date=update.date,
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fwd_from=update.fwd_from,
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via_bot_id=update.via_bot_id,
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reply_to_msg_id=update.reply_to_msg_id,
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entities=update.entities
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))
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elif isinstance(update, types.UpdateShortChatMessage):
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event = cls.Event(types.Message(
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out=update.out,
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mentioned=update.mentioned,
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media_unread=update.media_unread,
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silent=update.silent,
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id=update.id,
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from_id=update.from_id,
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to_id=types.PeerChat(update.chat_id),
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message=update.message,
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date=update.date,
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fwd_from=update.fwd_from,
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via_bot_id=update.via_bot_id,
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reply_to_msg_id=update.reply_to_msg_id,
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entities=update.entities
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))
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else:
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return
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# Make messages sent to ourselves outgoing unless they're forwarded.
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# This makes it consistent with official client's appearance.
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ori = event.message
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if isinstance(ori.to_id, types.PeerUser):
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if ori.from_id == ori.to_id.user_id and not ori.fwd_from:
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event.message.out = True
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event._entities = update._entities
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return event
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def filter(self, event):
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if self._no_check:
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return event
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if self.incoming and event.message.out:
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return
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if self.outgoing and not event.message.out:
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return
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if self.forwards is not None:
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if bool(self.forwards) != bool(event.message.fwd_from):
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return
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if self.from_users is not None:
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if event.message.from_id not in self.from_users:
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return
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if self.pattern:
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match = self.pattern(event.message.message or '')
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if not match:
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return
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event.pattern_match = match
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return super().filter(event)
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class Event(EventCommon):
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"""
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Represents the event of a new message. This event can be treated
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to all effects as a `telethon.tl.custom.message.Message`, so please
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**refer to its documentation** to know what you can do with this event.
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Members:
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message (:tl:`Message`):
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This is the only difference with the received
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`telethon.tl.custom.message.Message`, and will
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return the `telethon.tl.custom.message.Message` itself,
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not the text.
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See `telethon.tl.custom.message.Message` for the rest of
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available members and methods.
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pattern_match (`obj`):
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The resulting object from calling the passed ``pattern`` function.
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Here's an example using a string (defaults to regex match):
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>>> from telethon import TelegramClient, events
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>>> client = TelegramClient(...)
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>>>
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>>> @client.on(events.NewMessage(pattern=r'hi (\\w+)!'))
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... async def handler(event):
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... # In this case, the result is a ``Match`` object
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... # since the ``str`` pattern was converted into
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... # the ``re.compile(pattern).match`` function.
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... print('Welcomed', event.pattern_match.group(1))
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...
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>>>
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"""
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def __init__(self, message):
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self.__dict__['_init'] = False
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if not message.out and isinstance(message.to_id, types.PeerUser):
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# Incoming message (e.g. from a bot) has to_id=us, and
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# from_id=bot (the actual "chat" from an user's perspective).
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chat_peer = types.PeerUser(message.from_id)
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else:
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chat_peer = message.to_id
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super().__init__(chat_peer=chat_peer,
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msg_id=message.id, broadcast=bool(message.post))
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self.pattern_match = None
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self.message = message
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def _set_client(self, client):
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super()._set_client(client)
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self.message._finish_init(client, self._entities, None)
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self.__dict__['_init'] = True # No new attributes can be set
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def __getattr__(self, item):
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if item in self.__dict__:
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return self.__dict__[item]
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else:
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return getattr(self.message, item)
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def __setattr__(self, name, value):
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if not self.__dict__['_init'] or name in self.__dict__:
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self.__dict__[name] = value
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else:
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setattr(self.message, name, value)
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