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326 lines
9.8 KiB
ReStructuredText
326 lines
9.8 KiB
ReStructuredText
===============================
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Working with Chats and Channels
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===============================
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.. note::
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These examples assume you have read :ref:`accessing-the-full-api`.
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Joining a chat or channel
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*************************
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Note that :tl:`Chat` are normal groups, and :tl:`Channel` are a
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special form of :tl:`Chat`, which can also be super-groups if
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their ``megagroup`` member is ``True``.
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Joining a public channel
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************************
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Once you have the :ref:`entity <entities>` of the channel you want to join
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to, you can make use of the :tl:`JoinChannelRequest` to join such channel:
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.. code-block:: python
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from telethon.tl.functions.channels import JoinChannelRequest
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client(JoinChannelRequest(channel))
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# In the same way, you can also leave such channel
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from telethon.tl.functions.channels import LeaveChannelRequest
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client(LeaveChannelRequest(input_channel))
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For more on channels, check the `channels namespace`__.
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__ https://lonamiwebs.github.io/Telethon/methods/channels/index.html
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Joining a private chat or channel
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*********************************
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If all you have is a link like this one:
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``https://t.me/joinchat/AAAAAFFszQPyPEZ7wgxLtd``, you already have
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enough information to join! The part after the
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``https://t.me/joinchat/``, this is, ``AAAAAFFszQPyPEZ7wgxLtd`` on this
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example, is the ``hash`` of the chat or channel. Now you can use
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:tl:`ImportChatInviteRequest` as follows:
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.. code-block:: python
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from telethon.tl.functions.messages import ImportChatInviteRequest
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updates = client(ImportChatInviteRequest('AAAAAEHbEkejzxUjAUCfYg'))
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Adding someone else to such chat or channel
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*******************************************
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If you don't want to add yourself, maybe because you're already in,
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you can always add someone else with the :tl:`AddChatUserRequest`, which
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use is very straightforward, or :tl:`InviteToChannelRequest` for channels:
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.. code-block:: python
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# For normal chats
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from telethon.tl.functions.messages import AddChatUserRequest
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# Note that ``user_to_add`` is NOT the name of the parameter.
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# It's the user you want to add (``user_id=user_to_add``).
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client(AddChatUserRequest(
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chat_id,
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user_to_add,
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fwd_limit=10 # Allow the user to see the 10 last messages
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))
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# For channels (which includes megagroups)
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from telethon.tl.functions.channels import InviteToChannelRequest
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client(InviteToChannelRequest(
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channel,
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[users_to_add]
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))
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Checking a link without joining
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*******************************
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If you don't need to join but rather check whether it's a group or a
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channel, you can use the :tl:`CheckChatInviteRequest`, which takes in
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the hash of said channel or group.
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Retrieving all chat members (channels too)
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******************************************
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.. note::
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Use the `telethon.telegram_client.TelegramClient.iter_participants`
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friendly method instead unless you have a better reason not to!
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This method will handle different chat types for you automatically.
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Here is the easy way to do it:
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.. code-block:: python
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participants = client.get_participants(group)
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Now we will show how the method works internally.
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In order to get all the members from a mega-group or channel, you need
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to use :tl:`GetParticipantsRequest`. As we can see it needs an
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:tl:`InputChannel`, (passing the mega-group or channel you're going to
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use will work), and a mandatory :tl:`ChannelParticipantsFilter`. The
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closest thing to "no filter" is to simply use
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:tl:`ChannelParticipantsSearch` with an empty ``'q'`` string.
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If we want to get *all* the members, we need to use a moving offset and
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a fixed limit:
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.. code-block:: python
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from telethon.tl.functions.channels import GetParticipantsRequest
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from telethon.tl.types import ChannelParticipantsSearch
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from time import sleep
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offset = 0
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limit = 100
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all_participants = []
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while True:
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participants = client(GetParticipantsRequest(
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channel, ChannelParticipantsSearch(''), offset, limit, hash=0
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))
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if not participants.users:
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break
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all_participants.extend(participants.users)
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offset += len(participants.users)
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.. note::
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If you need more than 10,000 members from a group you should use the
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mentioned ``client.get_participants(..., aggressive=True)``. It will
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do some tricks behind the scenes to get as many entities as possible.
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Refer to `issue 573`__ for more on this.
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Note that :tl:`GetParticipantsRequest` returns :tl:`ChannelParticipants`,
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which may have more information you need (like the role of the
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participants, total count of members, etc.)
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__ https://github.com/LonamiWebs/Telethon/issues/573
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Recent Actions
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**************
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"Recent actions" is simply the name official applications have given to
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the "admin log". Simply use :tl:`GetAdminLogRequest` for that, and
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you'll get AdminLogResults.events in return which in turn has the final
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`.action`__.
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__ https://lonamiwebs.github.io/Telethon/types/channel_admin_log_event_action.html
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Admin Permissions
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*****************
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Giving or revoking admin permissions can be done with the :tl:`EditAdminRequest`:
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.. code-block:: python
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from telethon.tl.functions.channels import EditAdminRequest
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from telethon.tl.types import ChannelAdminRights
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# You need both the channel and who to grant permissions
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# They can either be channel/user or input channel/input user.
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#
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# ChannelAdminRights is a list of granted permissions.
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# Set to True those you want to give.
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rights = ChannelAdminRights(
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post_messages=None,
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add_admins=None,
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invite_users=None,
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change_info=True,
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ban_users=None,
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delete_messages=True,
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pin_messages=True,
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invite_link=None,
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edit_messages=None
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)
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# Equivalent to:
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# rights = ChannelAdminRights(
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# change_info=True,
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# delete_messages=True,
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# pin_messages=True
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# )
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# Once you have a ChannelAdminRights, invoke it
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client(EditAdminRequest(channel, user, rights))
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# User will now be able to change group info, delete other people's
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# messages and pin messages.
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.. note::
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Thanks to `@Kyle2142`__ for `pointing out`__ that you **cannot** set all
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parameters to ``True`` to give a user full permissions, as not all
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permissions are related to both broadcast channels/megagroups.
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E.g. trying to set ``post_messages=True`` in a megagroup will raise an
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error. It is recommended to always use keyword arguments, and to set only
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the permissions the user needs. If you don't need to change a permission,
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it can be omitted (full list `here`__).
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Restricting Users
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*****************
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Similar to how you give or revoke admin permissions, you can edit the
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banned rights of an user through :tl:`EditBannedRequest` and its parameter
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:tl:`ChannelBannedRights`:
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.. code-block:: python
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from telethon.tl.functions.channels import EditBannedRequest
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from telethon.tl.types import ChannelBannedRights
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from datetime import datetime, timedelta
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# Restricting an user for 7 days, only allowing view/send messages.
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#
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# Note that it's "reversed". You must set to ``True`` the permissions
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# you want to REMOVE, and leave as ``None`` those you want to KEEP.
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rights = ChannelBannedRights(
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until_date=timedelta(days=7),
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view_messages=None,
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send_messages=None,
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send_media=True,
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send_stickers=True,
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send_gifs=True,
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send_games=True,
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send_inline=True,
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embed_links=True
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)
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# The above is equivalent to
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rights = ChannelBannedRights(
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until_date=datetime.now() + timedelta(days=7),
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send_media=True,
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send_stickers=True,
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send_gifs=True,
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send_games=True,
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send_inline=True,
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embed_links=True
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)
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client(EditBannedRequest(channel, user, rights))
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You can also use a ``datetime`` object for ``until_date=``, or even a
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Unix timestamp. Note that if you ban someone for less than 30 seconds
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or for more than 366 days, Telegram will consider the ban to actually
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last forever. This is officially documented under
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https://core.telegram.org/bots/api#restrictchatmember.
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Kicking a member
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****************
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Telegram doesn't actually have a request to kick an user from a group.
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Instead, you need to restrict them so they can't see messages. Any date
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is enough:
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.. code-block:: python
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from telethon.tl.functions.channels import EditBannedRequest
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from telethon.tl.types import ChannelBannedRights
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client(EditBannedRequest(
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channel, user, ChannelBannedRights(
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until_date=None,
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view_messages=True
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)
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))
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__ https://github.com/Kyle2142
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__ https://github.com/LonamiWebs/Telethon/issues/490
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__ https://lonamiwebs.github.io/Telethon/constructors/channel_admin_rights.html
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Increasing View Count in a Channel
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**********************************
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It has been asked `quite`__ `a few`__ `times`__ (really, `many`__), and
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while I don't understand why so many people ask this, the solution is to
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use :tl:`GetMessagesViewsRequest`, setting ``increment=True``:
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.. code-block:: python
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# Obtain `channel' through dialogs or through client.get_entity() or anyhow.
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# Obtain `msg_ids' through `.get_messages()` or anyhow. Must be a list.
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client(GetMessagesViewsRequest(
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peer=channel,
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id=msg_ids,
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increment=True
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))
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Note that you can only do this **once or twice a day** per account,
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running this in a loop will obviously not increase the views forever
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unless you wait a day between each iteration. If you run it any sooner
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than that, the views simply won't be increased.
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__ https://github.com/LonamiWebs/Telethon/issues/233
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__ https://github.com/LonamiWebs/Telethon/issues/305
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__ https://github.com/LonamiWebs/Telethon/issues/409
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__ https://github.com/LonamiWebs/Telethon/issues/447
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