siftlode/backend/alembic/versions/0030_search_finds.py
npeter83 6cef826ecc feat(feed): per-user search finds in Mine scope + full-text relevance search
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.
2026-06-30 00:39:09 +02:00

47 lines
1.8 KiB
Python

"""per-user search finds
Revision ID: 0030_search_finds
Revises: 0029_unaccent_search
Create Date: 2026-06-30
Adds the `search_finds` table: a per-user record of which videos a user surfaced via their own
live YouTube search. This lets "videos I searched for" appear in that user's Mine feed (and the
Mine Source filter), independent of the global `videos.via_search` flag (which marks a video as
search-discovered by anyone, for the shared Library's Source filter).
"""
from typing import Sequence, Union
import sqlalchemy as sa
from alembic import op
revision: str = "0030_search_finds"
down_revision: Union[str, None] = "0029_unaccent_search"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None
def upgrade() -> None:
op.create_table(
"search_finds",
sa.Column("id", sa.Integer(), nullable=False),
sa.Column("user_id", sa.Integer(), nullable=False),
sa.Column("video_id", sa.String(), nullable=False),
sa.Column(
"created_at",
sa.DateTime(timezone=True),
server_default=sa.text("now()"),
nullable=False,
),
sa.ForeignKeyConstraint(["user_id"], ["users.id"], ondelete="CASCADE"),
sa.ForeignKeyConstraint(["video_id"], ["videos.id"], ondelete="CASCADE"),
sa.PrimaryKeyConstraint("id"),
sa.UniqueConstraint("user_id", "video_id", name="uq_user_search_video"),
)
op.create_index("ix_search_finds_user_id", "search_finds", ["user_id"])
op.create_index("ix_search_finds_video_id", "search_finds", ["video_id"])
def downgrade() -> None:
op.drop_index("ix_search_finds_video_id", table_name="search_finds")
op.drop_index("ix_search_finds_user_id", table_name="search_finds")
op.drop_table("search_finds")