There is no way to add a bot to a channel

[blacknoize404]

Checklist

• [X] I am sure the error is coming from Pyrogram's code and not elsewhere
• [X] I have searched in the issue tracker for similar bug reports, including closed ones
• [X] I ran pip3 install -U https://github.com/pyrogram/pyrogram/archive/master.zip and reproduced the issue using the latest development version

Description

Using pyrogram as user client:

The promote_chat_member method does not work to assign privileges to a bot you want to add to a channel.

Then using the add_chat_members method throws a 400 error because the bot needs admin permissions to be added to the channel.

I haven't found any kind of way to make this possible.

Steps to reproduce

Create an script and try to promote the bot in the channel Then add the bot Throws error 400...

Code example

await app.promote_chat_member("test_channel", "@test_bot")
await app.add_chat_members("test_channel", ["@test_bot"])
Throws error 400...

Logs

No response

[moshe-coh]

This is your error, you must add ChatPrivileges

code example:

  await client.promote_chat_member(
      chat,
      admin,
      ChatPrivileges(
          can_invite_users=True,
          can_promote_members=True,
          can_manage_chat=True,
          can_manage_video_chats=True,
          can_change_info=True,
          can_delete_messages=True,
          can_pin_messages=True,
          can_restrict_members=True,
          can_post_messages=True,
          can_edit_messages=True
      )
  )

Such questions should be asked at https://t.me/pyrogramchat or simply read the documents...