matrix-reminder-bot/matrix_reminder_bot/functions.py

159 lines
4.8 KiB
Python

import logging
from typing import Callable, Optional
from markdown import markdown
from nio import AsyncClient, SendRetryError
from matrix_reminder_bot.config import CONFIG
from matrix_reminder_bot.errors import CommandSyntaxError
logger = logging.getLogger(__name__)
async def send_text_to_room(
client: AsyncClient,
room_id: str,
message: str,
notice: bool = True,
markdown_convert: bool = True,
reply_to_event_id: Optional[str] = None,
mentions_room: bool = False,
mentions_user_ids: Optional[list[str]] = None,
):
"""Send text to a matrix room.
Args:
client: The client to communicate to matrix with.
room_id: The ID of the room to send the message to.
message: The message content.
notice: Whether the message should be sent with an "m.notice" message type
(will not ping users).
markdown_convert: Whether to convert the message content to markdown.
Defaults to true.
reply_to_event_id: Whether this message is a reply to another event. The event
ID this is message is a reply to.
mentions_room: Whether or not this message mentions the whole room.
Defaults to false.
mentions_user_ids: An optional list of MXIDs this message mentions.
"""
# Determine whether to ping room members or not
msgtype = "m.notice" if notice else "m.text"
content = {
"msgtype": msgtype,
"format": "org.matrix.custom.html",
"body": message,
"m.mentions": {},
}
if markdown_convert:
content["formatted_body"] = markdown(message)
if reply_to_event_id:
content["m.relates_to"] = {"m.in_reply_to": {"event_id": reply_to_event_id}}
if mentions_room:
content["m.mentions"]["room"] = True
if mentions_user_ids is not None:
content["m.mentions"]["user_ids"] = mentions_user_ids
try:
await client.room_send(
room_id,
"m.room.message",
content,
ignore_unverified_devices=True,
)
except SendRetryError:
logger.exception(f"Unable to send message response to {room_id}")
def command_syntax(syntax: str):
"""Defines the syntax for a function, and informs the user if it is violated
This function is intended to be used as a decorator, allowing command-handler
functions to define the syntax that the user is supposed to use for the
command arguments.
The command function, passed to `outer`, can signal that this syntax has been
violated by raising a CommandSyntaxError exception. This will then catch that
exception and inform the user of the correct syntax for that command.
Args:
syntax: The syntax for the command that the user should follow
"""
def outer(command_func: Callable):
async def inner(self, *args, **kwargs):
try:
# Attempt to execute the command function
await command_func(self, *args, **kwargs)
except CommandSyntaxError:
# The function indicated that there was a command syntax error
# Inform the user of the correct syntax
#
# Grab the bot's configured command prefix, and the current
# command's name from the `self` object passed to the command
text = (
f"Invalid syntax. Please use "
f"`{CONFIG.command_prefix}{self.command} {syntax}`."
)
await send_text_to_room(self.client, self.room.room_id, text)
return inner
return outer
def make_pill(user_id: str, displayname: str = None) -> str:
"""Convert a user ID (and optionally a display name) to a formatted user 'pill'
Args:
user_id: The MXID of the user.
displayname: An optional displayname. Clients like Element will figure out the
correct display name no matter what, but other clients may not.
Returns:
The formatted user pill.
"""
if not displayname:
# Use the user ID as the displayname if not provided
displayname = user_id
return f'<a href="https://matrix.to/#/{user_id}">{displayname}</a>'
def is_allowed_user(user_id: str) -> bool:
"""Returns if the bot is allowed to interact with the given user
Args:
user_id: The MXID of the user.
Returns:
True, if the bot is allowed to interact with the given user.
"""
allowed = not CONFIG.allowlist_enabled
if CONFIG.allowlist_enabled:
for regex in CONFIG.allowlist_regexes:
if regex.fullmatch(user_id):
allowed = True
break
if CONFIG.blocklist_enabled:
for regex in CONFIG.blocklist_regexes:
if regex.fullmatch(user_id):
allowed = False
break
return allowed