feat(wiki): docs-lookup plugin against Quartz contentIndex

New maubot plugin that points at any Quartz-rendered docs site and
answers chat queries by full-text searching its emitted
/static/contentIndex.json. Default config targets docs.ariege.io
(castle-docs).

Commands:
  !ask <query>            search corpus; top-N hits with snippet + link
  !doc <slug-or-title>    open a specific page (fuzzy title match)
  !wiki / !wiki refresh   status / force re-index

Architecture:
- Periodic fetch (default 10 min) of /static/contentIndex.json
- In-memory inverted-ish scoring: title hit 5pt, content hit 1pt + freq
- No LLM — pure deterministic keyword search; RAG is future Phase 2b
- No DB — index is upstream-derived cache, repopulates on bot restart

Deployment posture: docs.ariege.io is served from cfaun alongside
maubot, so the bot hits it over the host's internal network — works
during WAN outages. base-config.yaml exposes docs_url + index_path
for adopters pointing at their own site.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Padreug 2026-05-24 16:40:11 +02:00
commit 8f83d8df5e
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import asyncio
import difflib
import re
import time
from typing import Optional
from maubot import MessageEvent, Plugin
from maubot.handlers import command
from mautrix.util.config import BaseProxyConfig, ConfigUpdateHelper
class Config(BaseProxyConfig):
def do_update(self, helper: ConfigUpdateHelper) -> None:
helper.copy("docs_url")
helper.copy("index_path")
helper.copy("refresh_minutes")
helper.copy("max_results")
helper.copy("snippet_chars")
helper.copy("site_name")
_CMD_RE = re.compile(r"^!(ask|doc|wiki)(?:[ \t\r\n]+(.*))?$", re.DOTALL)
_TOKEN_RE = re.compile(r"[a-z0-9]+", re.IGNORECASE)
_STOPWORDS = frozenset({
"a", "an", "and", "as", "at", "be", "by", "for", "from", "how", "i",
"in", "is", "it", "of", "on", "or", "than", "that", "the", "this",
"to", "was", "what", "when", "where", "which", "who", "why", "with",
"do", "does", "did", "are", "we", "you", "our", "my", "me",
})
def _tokens(s: str) -> list[str]:
return [t.lower() for t in _TOKEN_RE.findall(s) if t.lower() not in _STOPWORDS]
def _make_url(base: str, slug: str) -> str:
return f"{base.rstrip('/')}/{slug.lstrip('/')}"
def _snippet(content: str, terms: list[str], width: int) -> str:
if not content:
return ""
lc = content.lower()
first = -1
matched_term = None
for t in terms:
idx = lc.find(t)
if idx != -1 and (first == -1 or idx < first):
first = idx
matched_term = t
if first == -1:
return content[:width].strip() + ("" if len(content) > width else "")
start = max(0, first - width // 2)
end = min(len(content), start + width)
chunk = content[start:end].strip().replace("\n", " ")
if matched_term:
chunk = re.sub(
rf"(?i)\b({re.escape(matched_term)})\b",
r"**\1**",
chunk,
)
prefix = "" if start > 0 else ""
suffix = "" if end < len(content) else ""
return f"{prefix}{chunk}{suffix}"
class WikiBot(Plugin):
config: Config
_index: dict
_slug_titles: list[tuple[str, str]]
_last_refresh: float
_refresh_task: Optional[asyncio.Task]
@classmethod
def get_config_class(cls):
return Config
async def start(self) -> None:
await super().start()
self.config.load_and_update()
self._index = {}
self._slug_titles = []
self._last_refresh = 0.0
self._refresh_task = asyncio.create_task(self._refresh_loop())
async def stop(self) -> None:
if self._refresh_task:
self._refresh_task.cancel()
await super().stop()
async def on_external_config_update(self) -> None:
self.config.load_and_update()
async def _refresh_loop(self) -> None:
try:
while True:
try:
await self._refresh()
except Exception:
self.log.exception("wiki refresh failed; will retry")
await asyncio.sleep(self.config["refresh_minutes"] * 60)
except asyncio.CancelledError:
raise
async def _refresh(self) -> None:
url = _make_url(self.config["docs_url"], self.config["index_path"])
async with self.http.get(url) as resp:
resp.raise_for_status()
data = await resp.json(content_type=None)
new_index = {}
slug_titles = []
for slug, entry in data.items():
title = (entry.get("title") or slug).strip()
content = entry.get("content") or ""
new_index[slug] = {
"title": title,
"content": content,
"tags": entry.get("tags") or [],
}
slug_titles.append((slug, title.lower()))
self._index = new_index
self._slug_titles = slug_titles
self._last_refresh = time.time()
self.log.info("wiki refresh: %d docs from %s", len(new_index), url)
def _search(self, query: str, limit: int) -> list[tuple[float, str, dict]]:
terms = _tokens(query)
if not terms:
return []
hits = []
for slug, doc in self._index.items():
title_lc = doc["title"].lower()
content_lc = doc["content"].lower()
score = 0.0
for t in terms:
if t in title_lc:
score += 5.0
if t in content_lc:
score += 1.0 + 0.1 * content_lc.count(t)
if score > 0:
hits.append((score, slug, doc))
hits.sort(key=lambda x: x[0], reverse=True)
return hits[:limit]
def _lookup(self, query: str) -> tuple[Optional[str], Optional[dict]]:
q = query.strip().lower()
if not q:
return None, None
if q in self._index:
return q, self._index[q]
for slug in self._index:
if slug.lower().endswith("/" + q) or slug.lower() == q:
return slug, self._index[slug]
candidates = [t for _, t in self._slug_titles]
match = difflib.get_close_matches(q, candidates, n=1, cutoff=0.6)
if match:
for slug, title in self._slug_titles:
if title == match[0]:
return slug, self._index[slug]
return None, None
@command.passive(regex=_CMD_RE)
async def dispatch(self, evt: MessageEvent, match) -> None:
verb = match[1].lower()
body = (match[2] or "").strip()
if verb == "ask":
await self._handle_ask(evt, body)
elif verb == "doc":
await self._handle_doc(evt, body)
elif verb == "wiki":
await self._handle_wiki(evt, body)
async def _handle_ask(self, evt: MessageEvent, body: str) -> None:
if not body:
await evt.reply(
f"Usage: `!ask <question>` — search {self.config['site_name']}."
)
return
if not self._index:
await evt.reply("Wiki index isn't ready yet; try again in a moment.")
return
hits = self._search(body, self.config["max_results"])
if not hits:
await evt.reply(f"No matches in {self.config['site_name']} for that.")
return
terms = _tokens(body)
snippet_chars = self.config["snippet_chars"]
lines = [f"**{self.config['site_name']}{len(hits)} match(es):**"]
for score, slug, doc in hits:
url = _make_url(self.config["docs_url"], slug)
snip = _snippet(doc["content"], terms, snippet_chars)
lines.append(f"- **[{doc['title']}]({url})** — {snip}")
await evt.reply("\n".join(lines))
async def _handle_doc(self, evt: MessageEvent, body: str) -> None:
if not body:
await evt.reply("Usage: `!doc <slug-or-title>` — open a specific page.")
return
if not self._index:
await evt.reply("Wiki index isn't ready yet; try again in a moment.")
return
slug, doc = self._lookup(body)
if slug is None or doc is None:
await evt.reply(
f"No page matches `{body}`. Try `!ask {body}` for a fuzzy search."
)
return
url = _make_url(self.config["docs_url"], slug)
snippet_chars = self.config["snippet_chars"] * 2
preview = (doc["content"] or "").strip().replace("\n", " ")
if len(preview) > snippet_chars:
preview = preview[:snippet_chars].rstrip() + ""
await evt.reply(f"**[{doc['title']}]({url})**\n{preview}")
async def _handle_wiki(self, evt: MessageEvent, body: str) -> None:
body = body.strip().lower()
if body == "refresh":
try:
await self._refresh()
await evt.reply(f"🔄 Refreshed {len(self._index)} docs.")
except Exception as e:
await evt.reply(f"Refresh failed: {e}")
return
if body in ("", "status"):
age = int(time.time() - self._last_refresh) if self._last_refresh else None
age_str = f"{age}s ago" if age is not None else "never"
await evt.reply(
f"**{self.config['site_name']}** — {len(self._index)} docs, "
f"last refresh: {age_str}\n"
f"Source: {_make_url(self.config['docs_url'], self.config['index_path'])}\n"
f"Use `!ask <query>` or `!doc <slug-or-title>`."
)
return
await evt.reply("Usage: `!wiki` (status) or `!wiki refresh` (re-index).")