fb4431207d
Milestone #127 step 2 (#1249). For You deliberately blends two populations — a head of top-scored taste picks and a tail sampled from deeper ranking (the freshness injection) — but the metrics judged it as one blob, so its skip rate couldn't distinguish "the taste engine is missing" from "the freshness tax is too high". That number decides the exploration share before we tune it. - Migration 0038: nullable pick_kind ('taste'|'fresh') on both playlist_tracks (stamped at snapshot build) and play_events (frozen at play-ingestion — the snapshot rebuilds daily, so attribution cannot be reconstructed at read time). - Builder: pickHeadAndTail marks head=taste / tail=fresh; the small-pool fallback is all taste (top-N-by-score IS the taste mechanism). Other variants persist NULL. - Ingestion: for_you plays (live + offline replay) look the track up in the user's current snapshot; not found → unattributed, never guessed. - Metrics: For You's row gains a breakdown (taste / fresh / earlier unattributed plays), parent row stays the sum; web card renders the sub-rows indented with the same baseline deltas + low-data dimming. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01TsF3cNoKrqCYsU78cXC8U6
387 lines
10 KiB
Go
387 lines
10 KiB
Go
// Code generated by sqlc. DO NOT EDIT.
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// versions:
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// sqlc v1.31.1
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// source: events.sql
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package dbq
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import (
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"context"
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"github.com/jackc/pgx/v5/pgtype"
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)
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const getCurrentSessionVectorForUser = `-- name: GetCurrentSessionVectorForUser :one
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SELECT pe.session_vector_at_play
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FROM play_events pe
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JOIN play_sessions s ON s.id = pe.session_id
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WHERE pe.user_id = $1
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AND s.ended_at IS NULL
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ORDER BY pe.started_at DESC
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LIMIT 1
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`
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// Returns the session_vector_at_play of the user's most recent play_event
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// in a still-active (un-timed-out) session. NoRows means no current vector.
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// Joined with play_sessions so closed sessions don't leak stale vectors.
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func (q *Queries) GetCurrentSessionVectorForUser(ctx context.Context, userID pgtype.UUID) ([]byte, error) {
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row := q.db.QueryRow(ctx, getCurrentSessionVectorForUser, userID)
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var session_vector_at_play []byte
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err := row.Scan(&session_vector_at_play)
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return session_vector_at_play, err
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}
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const getForYouPickKindForTrack = `-- name: GetForYouPickKindForTrack :one
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SELECT pt.pick_kind
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FROM playlist_tracks pt
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JOIN playlists p ON p.id = pt.playlist_id
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WHERE p.user_id = $1
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AND p.system_variant = 'for_you'
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AND pt.track_id = $2
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LIMIT 1
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`
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type GetForYouPickKindForTrackParams struct {
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UserID pgtype.UUID
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TrackID pgtype.UUID
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}
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// Looks a track up in the user's CURRENT For You snapshot and returns
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// its pick_kind ('taste'/'fresh'). Used at play-ingestion time to
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// freeze exploration attribution onto the play_event — the snapshot is
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// rebuilt daily, so attribution can't be reconstructed at read time
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// (#1249). No row = track not in today's snapshot (caller stores NULL).
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func (q *Queries) GetForYouPickKindForTrack(ctx context.Context, arg GetForYouPickKindForTrackParams) (*string, error) {
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row := q.db.QueryRow(ctx, getForYouPickKindForTrack, arg.UserID, arg.TrackID)
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var pick_kind *string
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err := row.Scan(&pick_kind)
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return pick_kind, err
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}
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const getMostRecentPlaySessionForUser = `-- name: GetMostRecentPlaySessionForUser :one
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SELECT id, user_id, started_at, ended_at, last_event_at, track_count, client_id FROM play_sessions
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WHERE user_id = $1
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ORDER BY last_event_at DESC
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LIMIT 1
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`
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func (q *Queries) GetMostRecentPlaySessionForUser(ctx context.Context, userID pgtype.UUID) (PlaySession, error) {
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row := q.db.QueryRow(ctx, getMostRecentPlaySessionForUser, userID)
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var i PlaySession
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err := row.Scan(
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&i.ID,
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&i.UserID,
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&i.StartedAt,
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&i.EndedAt,
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&i.LastEventAt,
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&i.TrackCount,
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&i.ClientID,
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)
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return i, err
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}
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const getOpenPlayEventForUser = `-- name: GetOpenPlayEventForUser :one
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SELECT id, user_id, track_id, session_id, started_at, ended_at, duration_played_ms, completion_ratio, was_skipped, client_id, session_vector_at_play, scrobbled_at, source, pick_kind FROM play_events
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WHERE user_id = $1 AND ended_at IS NULL
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ORDER BY started_at DESC
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LIMIT 1
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`
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// Returns the most recent play_event for a user where ended_at IS NULL.
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// Used by the auto-close-prior step in playevents.RecordPlayStarted.
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func (q *Queries) GetOpenPlayEventForUser(ctx context.Context, userID pgtype.UUID) (PlayEvent, error) {
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row := q.db.QueryRow(ctx, getOpenPlayEventForUser, userID)
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var i PlayEvent
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err := row.Scan(
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&i.ID,
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&i.UserID,
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&i.TrackID,
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&i.SessionID,
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&i.StartedAt,
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&i.EndedAt,
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&i.DurationPlayedMs,
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&i.CompletionRatio,
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&i.WasSkipped,
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&i.ClientID,
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&i.SessionVectorAtPlay,
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&i.ScrobbledAt,
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&i.Source,
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&i.PickKind,
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)
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return i, err
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}
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const getPlayEventByID = `-- name: GetPlayEventByID :one
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SELECT id, user_id, track_id, session_id, started_at, ended_at, duration_played_ms, completion_ratio, was_skipped, client_id, session_vector_at_play, scrobbled_at, source, pick_kind FROM play_events WHERE id = $1
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`
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func (q *Queries) GetPlayEventByID(ctx context.Context, id pgtype.UUID) (PlayEvent, error) {
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row := q.db.QueryRow(ctx, getPlayEventByID, id)
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var i PlayEvent
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err := row.Scan(
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&i.ID,
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&i.UserID,
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&i.TrackID,
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&i.SessionID,
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&i.StartedAt,
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&i.EndedAt,
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&i.DurationPlayedMs,
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&i.CompletionRatio,
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&i.WasSkipped,
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&i.ClientID,
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&i.SessionVectorAtPlay,
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&i.ScrobbledAt,
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&i.Source,
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&i.PickKind,
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)
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return i, err
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}
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const insertPlayEvent = `-- name: InsertPlayEvent :one
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INSERT INTO play_events (
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user_id, track_id, session_id, started_at, client_id, source, pick_kind
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) VALUES ($1, $2, $3, $4, $5, $6, $7::text)
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RETURNING id, user_id, track_id, session_id, started_at, ended_at, duration_played_ms, completion_ratio, was_skipped, client_id, session_vector_at_play, scrobbled_at, source, pick_kind
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`
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type InsertPlayEventParams struct {
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UserID pgtype.UUID
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TrackID pgtype.UUID
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SessionID pgtype.UUID
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StartedAt pgtype.Timestamptz
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ClientID *string
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Source *string
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PickKind *string
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}
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// pick_kind is non-NULL only for source='for_you' plays whose track was
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// found in the user's live For You snapshot at ingestion time (#1249).
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func (q *Queries) InsertPlayEvent(ctx context.Context, arg InsertPlayEventParams) (PlayEvent, error) {
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row := q.db.QueryRow(ctx, insertPlayEvent,
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arg.UserID,
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arg.TrackID,
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arg.SessionID,
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arg.StartedAt,
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arg.ClientID,
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arg.Source,
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arg.PickKind,
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)
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var i PlayEvent
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err := row.Scan(
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&i.ID,
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&i.UserID,
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&i.TrackID,
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&i.SessionID,
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&i.StartedAt,
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&i.EndedAt,
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&i.DurationPlayedMs,
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&i.CompletionRatio,
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&i.WasSkipped,
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&i.ClientID,
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&i.SessionVectorAtPlay,
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&i.ScrobbledAt,
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&i.Source,
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&i.PickKind,
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)
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return i, err
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}
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const insertPlaySession = `-- name: InsertPlaySession :one
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INSERT INTO play_sessions (user_id, started_at, last_event_at, client_id)
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VALUES ($1, $2, $2, $3)
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RETURNING id, user_id, started_at, ended_at, last_event_at, track_count, client_id
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`
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type InsertPlaySessionParams struct {
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UserID pgtype.UUID
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StartedAt pgtype.Timestamptz
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ClientID *string
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}
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func (q *Queries) InsertPlaySession(ctx context.Context, arg InsertPlaySessionParams) (PlaySession, error) {
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row := q.db.QueryRow(ctx, insertPlaySession, arg.UserID, arg.StartedAt, arg.ClientID)
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var i PlaySession
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err := row.Scan(
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&i.ID,
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&i.UserID,
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&i.StartedAt,
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&i.EndedAt,
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&i.LastEventAt,
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&i.TrackCount,
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&i.ClientID,
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)
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return i, err
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}
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const insertSkipEvent = `-- name: InsertSkipEvent :one
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INSERT INTO skip_events (user_id, track_id, session_id, skipped_at, position_ms)
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VALUES ($1, $2, $3, $4, $5)
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RETURNING id, user_id, track_id, session_id, skipped_at, position_ms
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`
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type InsertSkipEventParams struct {
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UserID pgtype.UUID
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TrackID pgtype.UUID
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SessionID pgtype.UUID
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SkippedAt pgtype.Timestamptz
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PositionMs int32
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}
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func (q *Queries) InsertSkipEvent(ctx context.Context, arg InsertSkipEventParams) (SkipEvent, error) {
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row := q.db.QueryRow(ctx, insertSkipEvent,
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arg.UserID,
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arg.TrackID,
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arg.SessionID,
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arg.SkippedAt,
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arg.PositionMs,
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)
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var i SkipEvent
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err := row.Scan(
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&i.ID,
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&i.UserID,
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&i.TrackID,
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&i.SessionID,
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&i.SkippedAt,
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&i.PositionMs,
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)
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return i, err
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}
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const listRecentSessionTracks = `-- name: ListRecentSessionTracks :many
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SELECT t.id, t.title, t.album_id, t.artist_id, t.track_number, t.disc_number, t.duration_ms, t.file_path, t.file_size, t.file_format, t.bitrate, t.mbid, t.genre, t.added_at, t.updated_at FROM tracks t
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JOIN play_events pe ON pe.track_id = t.id
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WHERE pe.session_id = $1
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AND pe.started_at < $2
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ORDER BY pe.started_at DESC
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LIMIT $3
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`
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type ListRecentSessionTracksParams struct {
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SessionID pgtype.UUID
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StartedAt pgtype.Timestamptz
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Limit int32
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}
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// Returns up to $3 tracks in session $1 whose play_event started before
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// $2, ordered newest-first. Used by playevents.RecordPlayStarted to
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// build the session_vector for the just-inserted play_event.
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func (q *Queries) ListRecentSessionTracks(ctx context.Context, arg ListRecentSessionTracksParams) ([]Track, error) {
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rows, err := q.db.Query(ctx, listRecentSessionTracks, arg.SessionID, arg.StartedAt, arg.Limit)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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var items []Track
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for rows.Next() {
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var i Track
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if err := rows.Scan(
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&i.ID,
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&i.Title,
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&i.AlbumID,
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&i.ArtistID,
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&i.TrackNumber,
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&i.DiscNumber,
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&i.DurationMs,
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&i.FilePath,
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&i.FileSize,
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&i.FileFormat,
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&i.Bitrate,
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&i.Mbid,
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&i.Genre,
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&i.AddedAt,
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&i.UpdatedAt,
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); err != nil {
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return nil, err
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}
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items = append(items, i)
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}
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if err := rows.Err(); err != nil {
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return nil, err
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}
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return items, nil
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}
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const touchPlaySessionLastEvent = `-- name: TouchPlaySessionLastEvent :exec
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UPDATE play_sessions
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SET last_event_at = $2,
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track_count = track_count + 1
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WHERE id = $1
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`
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type TouchPlaySessionLastEventParams struct {
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ID pgtype.UUID
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LastEventAt pgtype.Timestamptz
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}
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func (q *Queries) TouchPlaySessionLastEvent(ctx context.Context, arg TouchPlaySessionLastEventParams) error {
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_, err := q.db.Exec(ctx, touchPlaySessionLastEvent, arg.ID, arg.LastEventAt)
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return err
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}
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const updatePlayEventEnded = `-- name: UpdatePlayEventEnded :one
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UPDATE play_events
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SET ended_at = $2,
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duration_played_ms = $3,
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completion_ratio = $4,
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was_skipped = $5
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WHERE id = $1
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RETURNING id, user_id, track_id, session_id, started_at, ended_at, duration_played_ms, completion_ratio, was_skipped, client_id, session_vector_at_play, scrobbled_at, source, pick_kind
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`
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type UpdatePlayEventEndedParams struct {
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ID pgtype.UUID
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EndedAt pgtype.Timestamptz
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DurationPlayedMs *int32
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CompletionRatio *float64
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WasSkipped bool
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}
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// Closes a play_event by id with the given ended_at, duration, and skip flag.
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// completion_ratio is computed from duration_played_ms and the track duration
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// (looked up by the caller — sqlc doesn't do joins on UPDATE).
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func (q *Queries) UpdatePlayEventEnded(ctx context.Context, arg UpdatePlayEventEndedParams) (PlayEvent, error) {
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row := q.db.QueryRow(ctx, updatePlayEventEnded,
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arg.ID,
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arg.EndedAt,
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arg.DurationPlayedMs,
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arg.CompletionRatio,
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arg.WasSkipped,
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)
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var i PlayEvent
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err := row.Scan(
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&i.ID,
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&i.UserID,
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&i.TrackID,
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&i.SessionID,
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&i.StartedAt,
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&i.EndedAt,
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&i.DurationPlayedMs,
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&i.CompletionRatio,
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&i.WasSkipped,
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&i.ClientID,
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&i.SessionVectorAtPlay,
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&i.ScrobbledAt,
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&i.Source,
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&i.PickKind,
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)
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return i, err
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}
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const updatePlayEventVector = `-- name: UpdatePlayEventVector :exec
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UPDATE play_events
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SET session_vector_at_play = $2
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WHERE id = $1
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`
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type UpdatePlayEventVectorParams struct {
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ID pgtype.UUID
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SessionVectorAtPlay []byte
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}
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// Used right after InsertPlayEvent to populate session_vector_at_play
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// once the vector has been computed.
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func (q *Queries) UpdatePlayEventVector(ctx context.Context, arg UpdatePlayEventVectorParams) error {
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_, err := q.db.Exec(ctx, updatePlayEventVector, arg.ID, arg.SessionVectorAtPlay)
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return err
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}
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