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feat(feed): per-user search finds in Mine scope + full-text relevance search

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Two related search improvements:

1) Your own live-search results now belong to your Mine feed. A new per-user
   search_finds table (migration 0030) records each video you surface via your
   YouTube search (the route inserts them idempotently). The Mine feed becomes
   'your non-hidden subscriptions OR your search finds', and the Source filter
   now applies in Mine too: organic = subscriptions, search = your search finds,
   all = both (default stays organic, so the main feed is unchanged). The shared
   Library keeps using the global via_search flag.

2) Feed search ranks by relevance instead of a whole-phrase substring. A custom
   unaccent_simple text-search config + GIN index (migration 0031) back a
   YouTube-like fuzzy match: word-order-independent, multi-word AND, prefix on
   the word being typed, accent-insensitive. A new 'relevance' sort orders by
   ts_rank; the channel name still matches as a substring. The rank is scaled to
   an integer so the keyset cursor pages it exactly (a raw float4 breaks paging).
   _filtered_query returns the rank expr so only the feed list uses it.
This commit is contained in:
npeter83 2026-06-30 00:39:09 +02:00
parent a4abfa402f
commit 6cef826ecc
5 changed files with 208 additions and 22 deletions
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19
backend/app/models.py
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@ -344,6 +344,25 @@ class VideoState(Base, UpdatedAtMixin):
progress_updated_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
class SearchFind(Base, TimestampMixin):
"""Per-user record of a video the user surfaced via their own live YouTube search.
Lets "videos I searched for" appear in that user's own (Mine) feed and the Mine Source
filter — distinct from the GLOBAL `Video.via_search` provenance, which marks a video as
search-discovered by *anyone* and drives the shared Library's Source filter."""
__tablename__ = "search_finds"
__table_args__ = (UniqueConstraint("user_id", "video_id", name="uq_user_search_video"),)
id: Mapped[int] = mapped_column(primary_key=True)
user_id: Mapped[int] = mapped_column(
ForeignKey("users.id", ondelete="CASCADE"), index=True
)
video_id: Mapped[str] = mapped_column(
ForeignKey("videos.id", ondelete="CASCADE"), index=True
)
class ApiQuotaUsage(Base):
"""Tracks YouTube Data API units spent per Pacific-time day (the quota resets at
midnight Pacific). The whole app shares one daily budget."""