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minstrel/internal/db/dbq/taste_profile.sql.go
bvandeusen 6e0d0e5723
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feat(taste): phase 1 — persistent per-user taste profile from graded engagement (#796)
Build a persistent, decaying model of each user's taste, recomputed daily,
that later phases consume across every recommendation surface. Phase 1 only
BUILDS the object — no behaviour change to what's surfaced yet.

Core mechanic — graded engagement (replaces binary was_skipped for learning;
was_skipped stays for History): a play's completion ratio maps to a signal in
[-1,+1] via two linear ramps (instant-skip → -1, ~0.30 neutral, ≥0.90 → +1).
Time-decayed (half-life ~75d) so recent behaviour dominates and the profile
tracks drift.

Per operator constraints:
- No explicit dislike button — negatives come only from passive behaviour
  (early skips). Nothing recorded to regret or opt out of.
- Negatives are track-scoped; artist/tag weight is the decayed SUM of their
  tracks' engagement, so one skip nets out against many good plays (a
  DB test asserts a liked artist stays positive despite an early-skipped
  track). A floor clamp bounds how negative any single entity can get.

- migration 0035: taste_profile_artists / taste_profile_tags (signed weight,
  indexed by (user, weight DESC)).
- internal/taste: engagement.go (pure curve + decay) + profile.go
  (accumulate plays + like bonuses, floor damping, size caps, atomic-replace).
- scheduler: rebuildUserDaily recomputes the profile before the playlist
  build (so phase 2 can read it), best-effort — a taste failure never blocks
  playlist building. Wired into the daily job + startup catch-up only (not
  manual/lazy rebuilds).
- tests: pure (engagement curve, decay, ranking, floor, genre split) +
  DB-backed (positive/negative weights, aggregation-protects-artist, like
  bonus, atomic replace). All green vs real Postgres.

Config knobs live in taste.DefaultConfig() for now; wiring them into the
server RecommendationConfig is a later follow-up.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-11 20:55:14 -04:00

263 lines
7.3 KiB
Go

// Code generated by sqlc. DO NOT EDIT.
// versions:
// sqlc v1.31.1
// source: taste_profile.sql
package dbq
import (
"context"
"github.com/jackc/pgx/v5/pgtype"
)
const deleteTasteProfileArtistsForUser = `-- name: DeleteTasteProfileArtistsForUser :exec
DELETE FROM taste_profile_artists WHERE user_id = $1
`
func (q *Queries) DeleteTasteProfileArtistsForUser(ctx context.Context, userID pgtype.UUID) error {
_, err := q.db.Exec(ctx, deleteTasteProfileArtistsForUser, userID)
return err
}
const deleteTasteProfileTagsForUser = `-- name: DeleteTasteProfileTagsForUser :exec
DELETE FROM taste_profile_tags WHERE user_id = $1
`
func (q *Queries) DeleteTasteProfileTagsForUser(ctx context.Context, userID pgtype.UUID) error {
_, err := q.db.Exec(ctx, deleteTasteProfileTagsForUser, userID)
return err
}
const insertTasteProfileArtist = `-- name: InsertTasteProfileArtist :exec
INSERT INTO taste_profile_artists (user_id, artist_id, weight)
VALUES ($1, $2, $3)
`
type InsertTasteProfileArtistParams struct {
UserID pgtype.UUID
ArtistID pgtype.UUID
Weight float64
}
func (q *Queries) InsertTasteProfileArtist(ctx context.Context, arg InsertTasteProfileArtistParams) error {
_, err := q.db.Exec(ctx, insertTasteProfileArtist, arg.UserID, arg.ArtistID, arg.Weight)
return err
}
const insertTasteProfileTag = `-- name: InsertTasteProfileTag :exec
INSERT INTO taste_profile_tags (user_id, tag, weight)
VALUES ($1, $2, $3)
`
type InsertTasteProfileTagParams struct {
UserID pgtype.UUID
Tag string
Weight float64
}
func (q *Queries) InsertTasteProfileTag(ctx context.Context, arg InsertTasteProfileTagParams) error {
_, err := q.db.Exec(ctx, insertTasteProfileTag, arg.UserID, arg.Tag, arg.Weight)
return err
}
const listLikedArtistIDsForUser = `-- name: ListLikedArtistIDsForUser :many
SELECT artist_id FROM general_likes_artists WHERE user_id = $1
`
// Artists the user has explicitly liked; feeds the artist-like bonus.
func (q *Queries) ListLikedArtistIDsForUser(ctx context.Context, userID pgtype.UUID) ([]pgtype.UUID, error) {
rows, err := q.db.Query(ctx, listLikedArtistIDsForUser, userID)
if err != nil {
return nil, err
}
defer rows.Close()
var items []pgtype.UUID
for rows.Next() {
var artist_id pgtype.UUID
if err := rows.Scan(&artist_id); err != nil {
return nil, err
}
items = append(items, artist_id)
}
if err := rows.Err(); err != nil {
return nil, err
}
return items, nil
}
const listLikedTrackTasteInputsForUser = `-- name: ListLikedTrackTasteInputsForUser :many
SELECT t.artist_id, t.genre
FROM general_likes gl
JOIN tracks t ON t.id = gl.track_id
WHERE gl.user_id = $1
`
type ListLikedTrackTasteInputsForUserRow struct {
ArtistID pgtype.UUID
Genre *string
}
// (artist_id, genre) for each track the user has explicitly liked. Feeds the
// track-like bonus into the liked track's artist and tags.
func (q *Queries) ListLikedTrackTasteInputsForUser(ctx context.Context, userID pgtype.UUID) ([]ListLikedTrackTasteInputsForUserRow, error) {
rows, err := q.db.Query(ctx, listLikedTrackTasteInputsForUser, userID)
if err != nil {
return nil, err
}
defer rows.Close()
var items []ListLikedTrackTasteInputsForUserRow
for rows.Next() {
var i ListLikedTrackTasteInputsForUserRow
if err := rows.Scan(&i.ArtistID, &i.Genre); err != nil {
return nil, err
}
items = append(items, i)
}
if err := rows.Err(); err != nil {
return nil, err
}
return items, nil
}
const listPlayEngagementInputsForUser = `-- name: ListPlayEngagementInputsForUser :many
SELECT
t.artist_id,
t.genre,
LEAST(GREATEST(
COALESCE(pe.completion_ratio,
pe.duration_played_ms::float8 / NULLIF(t.duration_ms, 0),
0), 0), 1)::float8 AS completion,
(EXTRACT(epoch FROM now() - pe.started_at) / 86400.0)::float8 AS age_days
FROM play_events pe
JOIN tracks t ON t.id = pe.track_id
WHERE pe.user_id = $1
AND pe.started_at > now() - ($2::float8 * INTERVAL '1 day')
AND NOT EXISTS (
SELECT 1 FROM lidarr_quarantine q
WHERE q.user_id = $1 AND q.track_id = t.id
)
`
type ListPlayEngagementInputsForUserParams struct {
UserID pgtype.UUID
Column2 float64
}
type ListPlayEngagementInputsForUserRow struct {
ArtistID pgtype.UUID
Genre *string
Completion float64
AgeDays float64
}
// Taste profile (#796 phase 1). The daily build computes signed artist/tag
// weights in Go (graded engagement + decay + like bonus) and atomic-replaces
// them here. Read queries serve "top taste" lookups (used in phase 2).
// One row per play in the decay-relevant window. completion is the play's
// completion ratio (precomputed column when present, else duration_played /
// track duration, clamped to [0,1]); age_days drives the time-decay. Genre
// is split into tags in Go. Quarantined tracks are excluded.
func (q *Queries) ListPlayEngagementInputsForUser(ctx context.Context, arg ListPlayEngagementInputsForUserParams) ([]ListPlayEngagementInputsForUserRow, error) {
rows, err := q.db.Query(ctx, listPlayEngagementInputsForUser, arg.UserID, arg.Column2)
if err != nil {
return nil, err
}
defer rows.Close()
var items []ListPlayEngagementInputsForUserRow
for rows.Next() {
var i ListPlayEngagementInputsForUserRow
if err := rows.Scan(
&i.ArtistID,
&i.Genre,
&i.Completion,
&i.AgeDays,
); err != nil {
return nil, err
}
items = append(items, i)
}
if err := rows.Err(); err != nil {
return nil, err
}
return items, nil
}
const listTasteProfileArtistsForUser = `-- name: ListTasteProfileArtistsForUser :many
SELECT artist_id, weight
FROM taste_profile_artists
WHERE user_id = $1
ORDER BY weight DESC
LIMIT $2
`
type ListTasteProfileArtistsForUserParams struct {
UserID pgtype.UUID
Limit int32
}
type ListTasteProfileArtistsForUserRow struct {
ArtistID pgtype.UUID
Weight float64
}
// Top-weighted taste artists (phase-2 consumption + tests).
func (q *Queries) ListTasteProfileArtistsForUser(ctx context.Context, arg ListTasteProfileArtistsForUserParams) ([]ListTasteProfileArtistsForUserRow, error) {
rows, err := q.db.Query(ctx, listTasteProfileArtistsForUser, arg.UserID, arg.Limit)
if err != nil {
return nil, err
}
defer rows.Close()
var items []ListTasteProfileArtistsForUserRow
for rows.Next() {
var i ListTasteProfileArtistsForUserRow
if err := rows.Scan(&i.ArtistID, &i.Weight); err != nil {
return nil, err
}
items = append(items, i)
}
if err := rows.Err(); err != nil {
return nil, err
}
return items, nil
}
const listTasteProfileTagsForUser = `-- name: ListTasteProfileTagsForUser :many
SELECT tag, weight
FROM taste_profile_tags
WHERE user_id = $1
ORDER BY weight DESC
LIMIT $2
`
type ListTasteProfileTagsForUserParams struct {
UserID pgtype.UUID
Limit int32
}
type ListTasteProfileTagsForUserRow struct {
Tag string
Weight float64
}
func (q *Queries) ListTasteProfileTagsForUser(ctx context.Context, arg ListTasteProfileTagsForUserParams) ([]ListTasteProfileTagsForUserRow, error) {
rows, err := q.db.Query(ctx, listTasteProfileTagsForUser, arg.UserID, arg.Limit)
if err != nil {
return nil, err
}
defer rows.Close()
var items []ListTasteProfileTagsForUserRow
for rows.Next() {
var i ListTasteProfileTagsForUserRow
if err := rows.Scan(&i.Tag, &i.Weight); err != nil {
return nil, err
}
items = append(items, i)
}
if err := rows.Err(); err != nil {
return nil, err
}
return items, nil
}