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from __future__ import annotations
import re
from typing import TYPE_CHECKING, List, Match, Optional
import slack.slack_conversation
from slack.log import print_exception_once
from slack.python_compatibility import removeprefix
from slack.shared import shared
from slack.slack_user import SlackUser, SlackUsergroup, format_bot_nick
from slack.task import gather
from slack.util import with_color
if TYPE_CHECKING:
from slack_api.slack_conversations_history import SlackMessage as SlackMessageDict
from slack.slack_conversation import SlackConversation
from slack.slack_workspace import SlackWorkspace
class SlackMessage:
def __init__(self, conversation: SlackConversation, message_json: SlackMessageDict):
self._message_json = message_json
self.conversation = conversation
self.ts = message_json["ts"]
@property
def workspace(self) -> SlackWorkspace:
return self.conversation.workspace
@property
def sender_user_id(self) -> Optional[str]:
return self._message_json.get("user")
async def render_message(self) -> str:
prefix_coro = self._prefix()
message_coro = self._unfurl_refs(self._message_json["text"])
prefix, message = await gather(prefix_coro, message_coro)
return f"{prefix}\t{message}"
async def _prefix(self) -> str:
if (
"subtype" in self._message_json
and self._message_json["subtype"] == "bot_message"
):
username = self._message_json.get("username")
if username:
return format_bot_nick(username, colorize=True)
else:
bot = await self.workspace.bots[self._message_json["bot_id"]]
return bot.nick(colorize=True)
else:
user = await self.workspace.users[self._message_json["user"]]
return user.nick(colorize=True)
async def _lookup_item_id(self, item_id: str):
if item_id.startswith("#"):
return self.workspace.conversations[removeprefix(item_id, "#")]
elif item_id.startswith("@"):
return await self.workspace.users[removeprefix(item_id, "@")]
elif item_id.startswith("!subteam^"):
return await self.workspace.usergroups[removeprefix(item_id, "!subteam^")]
def _item_prefix(self, item_id: str):
if item_id.startswith("#") or item_id.startswith("@"):
return item_id[0]
elif item_id.startswith("!subteam^"):
return "@"
else:
return ""
async def _unfurl_refs(self, message: str) -> str:
re_mention = re.compile(r"<(?P<id>[^|>]+)(?:\|(?P<fallback_name>[^>]*))?>")
mention_matches = list(re_mention.finditer(message))
mention_ids: List[str] = [match["id"] for match in mention_matches]
items_list = await gather(
*(self._lookup_item_id(mention_id) for mention_id in mention_ids),
return_exceptions=True,
)
items = dict(zip(mention_ids, items_list))
def unfurl_ref(match: Match[str]):
item = items[match["id"]]
if isinstance(item, slack.slack_conversation.SlackConversation):
return with_color(
shared.config.color.channel_mention_color.value, "#" + item.name
)
elif isinstance(item, SlackUser):
return with_color(
shared.config.color.user_mention_color.value, "@" + item.nick()
)
elif isinstance(item, SlackUsergroup):
return with_color(
shared.config.color.usergroup_mention_color.value,
"@" + item.handle(),
)
elif match["fallback_name"]:
prefix = self._item_prefix(match["id"])
if match["fallback_name"].startswith(prefix):
return match["fallback_name"]
else:
return prefix + match["fallback_name"]
elif item:
print_exception_once(item)
return match[0]
return re_mention.sub(unfurl_ref, message)
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