Files
siftlode/backend/app/utils.py
T
peter 2ab188d873 refactor: address code-review — layering + public API naming
Applies the three findings from the /code-review high pass on this stack:

1. to_tsquery_str moved from app.feedquery to app.utils — it's a generic
   tsquery sanitizer with no feed dependency; housing it in the feed
   read-model coupled the Plex browse module to the feed domain. Both feed
   and plex now import it from the neutral util module.

2. feedquery.decode_cursor no longer raises fastapi.HTTPException — it raises
   a plain ValueError, and routes/feed.get_feed translates it to the HTTP 400.
   The read-model no longer imports fastapi, matching its "no request state"
   docstring.

3. Dropped the leading underscore on the helpers that are now a cross-module
   public API: feedquery {filtered_query, sort_keys, order_by, keyset_predicate,
   encode_cursor, decode_cursor}; plex.query {TS_CONFIG, FIELD_COLUMNS,
   field_recheck, split_csv, added_cutoff, meta_filter_conds, apply_meta_filters,
   like_escape}; plex.cards {movie_card, show_card, episode_card, leaf_card}.
   Genuinely-internal helpers (_channel_url, _saved_expr, _ADDED_WINDOWS,
   _lib_key) keep their underscore.

Pure code motion + rename. DB-lane suite 287 passed / 2 skipped; ruff clean.
2026-08-17 18:23:03 +02:00

39 lines
1.8 KiB
Python

"""Small cross-cutting helpers shared across modules (kept dependency-light on purpose)."""
import re
from datetime import date, datetime, timezone
def iso(dt: date | None) -> str | None:
"""Serialize a date/datetime for a JSON response: ISO-8601, or None when the column is
NULL. Single source of truth for the `x.isoformat() if x else None` idiom the routes had
hand-rolled ~17 times — so a future tz/format tweak lands in one place. Accepts `date`
too (datetime is a subclass) — e.g. MediaAsset.upload_date is a plain `date`."""
return dt.isoformat() if dt is not None else None
# Single source of truth for "looks like an email" — used by every endpoint that accepts an
# address (auth register/reset/demo, admin invites + demo whitelist, the setup wizard). Keep
# the strictness in one place so routes don't drift between this and a looser "@"-in check.
_EMAIL_RE = re.compile(r"^[^@\s]+@[^@\s]+\.[^@\s]+$")
def valid_email(value: str | None) -> bool:
return bool(value and _EMAIL_RE.match(value))
def now_utc() -> datetime:
"""Current time as a timezone-aware UTC datetime."""
return datetime.now(timezone.utc)
def to_tsquery_str(q: str) -> str | None:
"""Turn free-text into a to_tsquery() string: word runs ANDed together, the LAST word
prefix-matched (`:*`) for as-you-type search — e.g. "ti amo magyar" → "ti & amo & magyar:*".
Only `\\w` runs containing an alphanumeric are kept, so no tsquery operators can leak in
(the string is built from sanitised tokens, never the raw query). Shared by the YouTube feed
search and the Plex library search, hence this neutral home rather than either domain module."""
tokens = [t for t in re.findall(r"\w+", q, flags=re.UNICODE) if any(c.isalnum() for c in t)]
if not tokens:
return None
tokens[-1] = tokens[-1] + ":*"
return " & ".join(tokens)