forked from uniborg/uniborg
96 lines
2.7 KiB
Python
96 lines
2.7 KiB
Python
import asyncio
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import re
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import html
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from dataclasses import dataclass
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from telethon import events, utils
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from telethon.tl.functions.channels import EditTitleRequest
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from telethon.errors.rpcerrorlist import ChatNotModifiedError
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MULTI_EDIT_TIMEOUT = 80
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REVERT_TIMEOUT = 2 * 60 * 60
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@dataclass
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class Group:
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id: int
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title: str
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rename_lock = asyncio.Lock()
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revert_task: asyncio.Task = None
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GROUPS = {group.id: group for group in (
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Group(1040270887, 'Programming & Tech'),
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Group(1384391544, 'Programming & Tech for girls'),
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Group(1286178907, 'test supergroup')
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)}
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def fix_title(s):
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# Ideally this would be a state machine, but ¯\_(ツ)_/¯
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def replace(m):
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token = m.group(1)
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if token.lower() == 'and':
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token = '&'
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return token[0].upper() + token[1:] + (' ' if m.group(2) else '')
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return re.sub(r'(\S+)(\s+)?', replace, s)
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async def edit_title(chat, title):
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try:
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await borg(EditTitleRequest(
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channel=chat, title=title
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))
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except ChatNotModifiedError:
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pass # Everything is ok
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async def wait_and_revert(chat_id, title, timeout):
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await asyncio.sleep(timeout)
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await edit_title(chat_id, title)
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@borg.on(events.NewMessage(
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pattern=re.compile(r"(?i)programming (?:&|and) (.+)"),
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chats=list(GROUPS.keys())))
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async def on_name(event):
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new_topic = fix_title(event.pattern_match.group(1))
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new_title = f"Programming & {new_topic}"
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if "Tech" not in new_title:
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new_title += " & Tech"
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group = GROUPS[utils.get_peer_id(event.chat_id, False)] # Thanks Lonami
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logger.info(f'{event.from_id} in {group.id} '
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f'requested a title change to {new_title}')
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if len(new_title) > 255:
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logger.info('Not changing group title because new title is too long')
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return
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if group.rename_lock.locked():
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logger.info('Not changing group title because the rename lock is already held')
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return
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with (await group.rename_lock):
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logger.info(f'Changing group title to {new_title}')
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await event.respond(
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f'<a href="tg://user?id={event.from_id}">{html.escape(event.sender.first_name)}</a>'
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' changed the group title!',
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parse_mode='html'
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)
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await edit_title(event.chat_id, new_title)
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logger.info(f'Holding rename lock for {MULTI_EDIT_TIMEOUT} seconds')
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await asyncio.sleep(MULTI_EDIT_TIMEOUT)
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if group.revert_task and not group.revert_task.done():
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logger.info('Cancelling previous revert task')
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group.revert_task.cancel()
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logger.info('Creating revert task')
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group.revert_task = asyncio.create_task(wait_and_revert(
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event.chat_id,
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group.title,
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REVERT_TIMEOUT
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))
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