Private
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ksmithandClaude Sonnet 5
4bac502b2c
@username tokens in a sent message are parsed against the room's actual members (skipping fenced/inline code, so pasted code isn't misread) and recorded as MessageMention rows, reusing #38's read-tracking and offline-member broadcast infrastructure rather than building a parallel notification path: - Sidebar: a mentioned-and-unread room shows a distinct highlight- colored badge instead of (not alongside) the plain unread dot -- computed the same way as has_unread, just scoped to messages that mention the caller, and cleared by the same last_read_at mark-read flow. - Push notifications: a mentioned offline recipient gets "X mentioned you: ..." instead of the generic "X: ...", still per-recipient since the same message can page some room members and not others. - Message rendering: a validated @username is highlighted inline, implemented by turning it into a `[@username](mention:username)` link before markdown parsing and overriding link rendering to style `mention:`-scheme links as a span instead of an anchor -- reuses markdown-to-jsx's existing parser rather than hand-rolling text-node splitting. - Composer: typing @ opens an autocomplete dropdown of matching room members (arrow keys to navigate, Enter/Tab/click to insert, Escape or moving the cursor away to dismiss). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
50 lines
1.7 KiB
Python
50 lines
1.7 KiB
Python
import re
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import uuid
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from sqlalchemy import select
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from sqlalchemy.ext.asyncio import AsyncSession
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from app.models import RoomMembership, User
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MENTION_PATTERN = re.compile(r"@([a-zA-Z0-9_.-]+)")
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def _strip_code_spans(content: str) -> str:
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"""Blanks out fenced code blocks and inline code spans (replacing with
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equal-length whitespace, so a bare '@' in pasted code -- a decorator, an
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email fragment -- doesn't page someone. Mirrors the same skip logic
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frontend/src/components/MessageContent.tsx already uses for emoji
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shortcode conversion."""
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lines = content.split("\n")
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in_fence = False
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out = []
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for line in lines:
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if re.match(r"^\s*```", line):
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in_fence = not in_fence
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out.append(line)
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continue
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if in_fence:
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out.append(line)
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continue
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parts = re.split(r"(`+[^`]*`+)", line)
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out.append("".join(part if i % 2 == 0 else " " * len(part) for i, part in enumerate(parts)))
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return "\n".join(out)
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async def extract_mentioned_user_ids(
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db: AsyncSession, room_id: uuid.UUID, content: str
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) -> set[uuid.UUID]:
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"""Resolves `@username` tokens in `content` against this room's actual
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members -- a bare '@' followed by prose that happens to not match
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anyone's username is just text, not a mention."""
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usernames = set(MENTION_PATTERN.findall(_strip_code_spans(content)))
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if not usernames:
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return set()
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result = await db.execute(
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select(RoomMembership.user_id)
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.join(User, User.id == RoomMembership.user_id)
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.where(RoomMembership.room_id == room_id, User.username.in_(usernames))
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)
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return {row[0] for row in result.all()}
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