// Code generated by sqlc. DO NOT EDIT.
// versions:
//   sqlc v1.31.1
// source: duplicates.sql

package dbq

import (
	"context"

	"github.com/jackc/pgx/v5/pgtype"
)

const addDuplicateGroupMember = `-- name: AddDuplicateGroupMember :exec
INSERT INTO duplicate_group_members (group_id, track_id)
VALUES ($1, $2)
ON CONFLICT DO NOTHING
`

type AddDuplicateGroupMemberParams struct {
	GroupID pgtype.UUID
	TrackID pgtype.UUID
}

func (q *Queries) AddDuplicateGroupMember(ctx context.Context, arg AddDuplicateGroupMemberParams) error {
	_, err := q.db.Exec(ctx, addDuplicateGroupMember, arg.GroupID, arg.TrackID)
	return err
}

const countPendingDuplicateGroups = `-- name: CountPendingDuplicateGroups :one
SELECT count(*)::bigint
  FROM duplicate_groups g
 WHERE g.status = 'pending'
   AND (SELECT count(*) FROM duplicate_group_members m WHERE m.group_id = g.id) >= 2
`

// Proposals awaiting review. A group left with one member — its other tracks
// deleted since the sweep — is no proposal at all and is not counted; the next
// sweep retires it.
func (q *Queries) CountPendingDuplicateGroups(ctx context.Context) (int64, error) {
	row := q.db.QueryRow(ctx, countPendingDuplicateGroups)
	var column_1 int64
	err := row.Scan(&column_1)
	return column_1, err
}

const deleteStalePendingDuplicateGroups = `-- name: DeleteStalePendingDuplicateGroups :execrows
DELETE FROM duplicate_groups g
 WHERE g.status = 'pending'
   AND g.last_seen_sweep_id IS DISTINCT FROM $1
   AND (g.last_seen_sweep_id IS NULL
        OR (SELECT s.started_at FROM duplicate_sweeps s WHERE s.id = g.last_seen_sweep_id)
           < (SELECT s.started_at FROM duplicate_sweeps s WHERE s.id = $1))
`

// A pending proposal this sweep did not find again no longer describes the
// library: a member was re-fingerprinted, merged away or went missing. Dismissed
// groups are kept regardless — they are the memory of a decision.
//
// Only proposals last confirmed by an EARLIER sweep go. Should two sweeps ever
// overlap (a manual trigger racing the worker), neither may delete what the other
// has just found.
func (q *Queries) DeleteStalePendingDuplicateGroups(ctx context.Context, sweepID pgtype.UUID) (int64, error) {
	result, err := q.db.Exec(ctx, deleteStalePendingDuplicateGroups, sweepID)
	if err != nil {
		return 0, err
	}
	return result.RowsAffected(), nil
}

const dismissDuplicateGroup = `-- name: DismissDuplicateGroup :execrows
UPDATE duplicate_groups
   SET status = 'dismissed', resolved_at = now()
 WHERE id = $1 AND status = 'pending'
`

// "These are not duplicates." Only a pending group can be dismissed; zero rows
// means it was already resolved or no longer exists.
func (q *Queries) DismissDuplicateGroup(ctx context.Context, id pgtype.UUID) (int64, error) {
	result, err := q.db.Exec(ctx, dismissDuplicateGroup, id)
	if err != nil {
		return 0, err
	}
	return result.RowsAffected(), nil
}

const finishDuplicateSweep = `-- name: FinishDuplicateSweep :exec
UPDATE duplicate_sweeps
   SET finished_at       = now(),
       candidates        = $1,
       groups_found      = $2,
       oversize_clusters = $3,
       error_message     = NULLIF($4::text, '')
 WHERE id = $5
`

type FinishDuplicateSweepParams struct {
	Candidates       *int32
	GroupsFound      *int32
	OversizeClusters *int32
	ErrorMessage     string
	ID               pgtype.UUID
}

func (q *Queries) FinishDuplicateSweep(ctx context.Context, arg FinishDuplicateSweepParams) error {
	_, err := q.db.Exec(ctx, finishDuplicateSweep,
		arg.Candidates,
		arg.GroupsFound,
		arg.OversizeClusters,
		arg.ErrorMessage,
		arg.ID,
	)
	return err
}

const getInFlightDuplicateSweep = `-- name: GetInFlightDuplicateSweep :one
SELECT id, started_at
  FROM duplicate_sweeps
 WHERE finished_at IS NULL
 ORDER BY started_at DESC
 LIMIT 1
`

type GetInFlightDuplicateSweepRow struct {
	ID        pgtype.UUID
	StartedAt pgtype.Timestamptz
}

// The guard against two sweeps at once: "in flight" is finished_at IS NULL.
func (q *Queries) GetInFlightDuplicateSweep(ctx context.Context) (GetInFlightDuplicateSweepRow, error) {
	row := q.db.QueryRow(ctx, getInFlightDuplicateSweep)
	var i GetInFlightDuplicateSweepRow
	err := row.Scan(&i.ID, &i.StartedAt)
	return i, err
}

const getLatestDuplicateSweep = `-- name: GetLatestDuplicateSweep :one
SELECT id, started_at, finished_at, candidates, groups_found, oversize_clusters, error_message
  FROM duplicate_sweeps
 ORDER BY started_at DESC
 LIMIT 1
`

func (q *Queries) GetLatestDuplicateSweep(ctx context.Context) (DuplicateSweep, error) {
	row := q.db.QueryRow(ctx, getLatestDuplicateSweep)
	var i DuplicateSweep
	err := row.Scan(
		&i.ID,
		&i.StartedAt,
		&i.FinishedAt,
		&i.Candidates,
		&i.GroupsFound,
		&i.OversizeClusters,
		&i.ErrorMessage,
	)
	return i, err
}

const getLatestFingerprintComputedAt = `-- name: GetLatestFingerprintComputedAt :one
SELECT max(computed_at)::timestamptz AS latest FROM track_fingerprints
`

// Whether a sweep has anything new to look at: fingerprints written since the
// last sweep started.
func (q *Queries) GetLatestFingerprintComputedAt(ctx context.Context) (pgtype.Timestamptz, error) {
	row := q.db.QueryRow(ctx, getLatestFingerprintComputedAt)
	var latest pgtype.Timestamptz
	err := row.Scan(&latest)
	return latest, err
}

const listDismissedDuplicateMemberSets = `-- name: ListDismissedDuplicateMemberSets :many
SELECT g.id, array_agg(m.track_id ORDER BY m.track_id)::uuid[] AS track_ids
  FROM duplicate_groups g
  JOIN duplicate_group_members m ON m.group_id = g.id
 WHERE g.status = 'dismissed'
 GROUP BY g.id
`

type ListDismissedDuplicateMemberSetsRow struct {
	ID       pgtype.UUID
	TrackIds []pgtype.UUID
}

// What the operator has already said are not duplicates. A new proposal whose
// every member sat together in one of these is not proposed again.
func (q *Queries) ListDismissedDuplicateMemberSets(ctx context.Context) ([]ListDismissedDuplicateMemberSetsRow, error) {
	rows, err := q.db.Query(ctx, listDismissedDuplicateMemberSets)
	if err != nil {
		return nil, err
	}
	defer rows.Close()
	var items []ListDismissedDuplicateMemberSetsRow
	for rows.Next() {
		var i ListDismissedDuplicateMemberSetsRow
		if err := rows.Scan(&i.ID, &i.TrackIds); err != nil {
			return nil, err
		}
		items = append(items, i)
	}
	if err := rows.Err(); err != nil {
		return nil, err
	}
	return items, nil
}

const listDuplicateCandidates = `-- name: ListDuplicateCandidates :many
SELECT t.id, t.duration_ms, f.audio_stream_sha256, f.chromaprint
  FROM tracks t
  JOIN track_fingerprints f ON f.track_id = t.id
 WHERE t.missing_since IS NULL
   AND f.fingerprint_version >= $1
   AND f.chromaprint IS NOT NULL
   -- Only chromaprints taken at the current length: prints at two lengths are not
   -- comparable, and after a length change the backfill is still re-deriving the
   -- rest (#3913).
   AND f.chromaprint_length_sec = $2
   AND (t.duration_ms, t.id) > ($3::integer, $4::uuid)
 ORDER BY t.duration_ms, t.id
 LIMIT $5
`

type ListDuplicateCandidatesParams struct {
	CurrentVersion       int16
	ChromaprintLengthSec int32
	AfterDurationMs      int32
	AfterID              pgtype.UUID
	PageLimit            int32
}

type ListDuplicateCandidatesRow struct {
	ID                pgtype.UUID
	DurationMs        int32
	AudioStreamSha256 []byte
	Chromaprint       []int32
}

// The acoustic tier's input, one page at a time in (duration_ms, id) order so the
// sweep holds only a sliding window of durations. Tracks without a chromaprint
// cannot be compared acoustically and are left out; any exact duplicates among
// them come from ListExactDuplicateHashes.
func (q *Queries) ListDuplicateCandidates(ctx context.Context, arg ListDuplicateCandidatesParams) ([]ListDuplicateCandidatesRow, error) {
	rows, err := q.db.Query(ctx, listDuplicateCandidates,
		arg.CurrentVersion,
		arg.ChromaprintLengthSec,
		arg.AfterDurationMs,
		arg.AfterID,
		arg.PageLimit,
	)
	if err != nil {
		return nil, err
	}
	defer rows.Close()
	var items []ListDuplicateCandidatesRow
	for rows.Next() {
		var i ListDuplicateCandidatesRow
		if err := rows.Scan(
			&i.ID,
			&i.DurationMs,
			&i.AudioStreamSha256,
			&i.Chromaprint,
		); err != nil {
			return nil, err
		}
		items = append(items, i)
	}
	if err := rows.Err(); err != nil {
		return nil, err
	}
	return items, nil
}

const listExactDuplicateHashes = `-- name: ListExactDuplicateHashes :many
SELECT f.audio_stream_sha256,
       array_agg(t.id ORDER BY t.id)::uuid[] AS track_ids
  FROM track_fingerprints f
  JOIN tracks t ON t.id = f.track_id
 WHERE t.missing_since IS NULL
   AND f.fingerprint_version >= $1
   AND f.audio_stream_sha256 IS NOT NULL
 GROUP BY f.audio_stream_sha256
HAVING count(*) > 1
`

type ListExactDuplicateHashesRow struct {
	AudioStreamSha256 []byte
	TrackIds          []pgtype.UUID
}

// The exact tier, library-wide in one pass: identical encoded audio shared by
// more than one present track.
func (q *Queries) ListExactDuplicateHashes(ctx context.Context, currentVersion int16) ([]ListExactDuplicateHashesRow, error) {
	rows, err := q.db.Query(ctx, listExactDuplicateHashes, currentVersion)
	if err != nil {
		return nil, err
	}
	defer rows.Close()
	var items []ListExactDuplicateHashesRow
	for rows.Next() {
		var i ListExactDuplicateHashesRow
		if err := rows.Scan(&i.AudioStreamSha256, &i.TrackIds); err != nil {
			return nil, err
		}
		items = append(items, i)
	}
	if err := rows.Err(); err != nil {
		return nil, err
	}
	return items, nil
}

const listPendingDuplicateGroupMembers = `-- name: ListPendingDuplicateGroupMembers :many
WITH page AS (
    SELECT g.id, g.tier, g.worst_bit_error_rate, g.detected_at
      FROM duplicate_groups g
     WHERE g.status = 'pending'
       AND (SELECT count(*) FROM duplicate_group_members m WHERE m.group_id = g.id) >= 2
     ORDER BY g.detected_at DESC, g.id
     LIMIT $2 OFFSET $1
)
SELECT p.id                  AS group_id,
       p.tier,
       p.worst_bit_error_rate,
       p.detected_at,
       t.id                  AS track_id,
       t.title,
       artists.name          AS artist_name,
       albums.id             AS album_id,
       albums.title          AS album_title,
       t.file_path,
       t.file_format,
       t.file_size,
       t.duration_ms,
       t.added_at,
       (SELECT count(*) FROM general_likes l WHERE l.track_id = t.id)::bigint AS like_count,
       (SELECT count(*) FROM play_events e WHERE e.track_id = t.id)::bigint   AS play_count
  FROM page p
  JOIN duplicate_group_members m ON m.group_id = p.id
  JOIN tracks t  ON t.id = m.track_id
  JOIN albums    ON albums.id  = t.album_id
  JOIN artists   ON artists.id = t.artist_id
 ORDER BY p.detected_at DESC, p.id, t.id
`

type ListPendingDuplicateGroupMembersParams struct {
	PageOffset int32
	PageLimit  int32
}

type ListPendingDuplicateGroupMembersRow struct {
	GroupID           pgtype.UUID
	Tier              string
	WorstBitErrorRate *float32
	DetectedAt        pgtype.Timestamptz
	TrackID           pgtype.UUID
	Title             string
	ArtistName        string
	AlbumID           pgtype.UUID
	AlbumTitle        string
	FilePath          string
	FileFormat        string
	FileSize          int64
	DurationMs        int32
	AddedAt           pgtype.Timestamptz
	LikeCount         int64
	PlayCount         int64
}

// One page of proposals, newest first, flattened to one row per member so the
// handler folds them without a query per group. What each copy carries — likes
// and plays from every user — is here because it is what the operator weighs
// when deciding which copy to keep.
func (q *Queries) ListPendingDuplicateGroupMembers(ctx context.Context, arg ListPendingDuplicateGroupMembersParams) ([]ListPendingDuplicateGroupMembersRow, error) {
	rows, err := q.db.Query(ctx, listPendingDuplicateGroupMembers, arg.PageOffset, arg.PageLimit)
	if err != nil {
		return nil, err
	}
	defer rows.Close()
	var items []ListPendingDuplicateGroupMembersRow
	for rows.Next() {
		var i ListPendingDuplicateGroupMembersRow
		if err := rows.Scan(
			&i.GroupID,
			&i.Tier,
			&i.WorstBitErrorRate,
			&i.DetectedAt,
			&i.TrackID,
			&i.Title,
			&i.ArtistName,
			&i.AlbumID,
			&i.AlbumTitle,
			&i.FilePath,
			&i.FileFormat,
			&i.FileSize,
			&i.DurationMs,
			&i.AddedAt,
			&i.LikeCount,
			&i.PlayCount,
		); err != nil {
			return nil, err
		}
		items = append(items, i)
	}
	if err := rows.Err(); err != nil {
		return nil, err
	}
	return items, nil
}

const startDuplicateSweep = `-- name: StartDuplicateSweep :one
INSERT INTO duplicate_sweeps DEFAULT VALUES RETURNING id, started_at
`

type StartDuplicateSweepRow struct {
	ID        pgtype.UUID
	StartedAt pgtype.Timestamptz
}

func (q *Queries) StartDuplicateSweep(ctx context.Context) (StartDuplicateSweepRow, error) {
	row := q.db.QueryRow(ctx, startDuplicateSweep)
	var i StartDuplicateSweepRow
	err := row.Scan(&i.ID, &i.StartedAt)
	return i, err
}

const upsertDuplicateGroup = `-- name: UpsertDuplicateGroup :one
INSERT INTO duplicate_groups (member_key, tier, worst_bit_error_rate, last_seen_sweep_id)
VALUES ($1, $2, $3, $4)
ON CONFLICT (member_key) DO UPDATE
   SET tier                 = EXCLUDED.tier,
       worst_bit_error_rate = EXCLUDED.worst_bit_error_rate,
       last_seen_sweep_id   = EXCLUDED.last_seen_sweep_id
 WHERE duplicate_groups.status = 'pending'
RETURNING id
`

type UpsertDuplicateGroupParams struct {
	MemberKey         string
	Tier              string
	WorstBitErrorRate *float32
	SweepID           pgtype.UUID
}

// Proposes a group, or refreshes one already pending. A group already dismissed
// or merged is left exactly as it is: the WHERE on the update makes the conflict
// a no-op, and the caller sees no row.
func (q *Queries) UpsertDuplicateGroup(ctx context.Context, arg UpsertDuplicateGroupParams) (pgtype.UUID, error) {
	row := q.db.QueryRow(ctx, upsertDuplicateGroup,
		arg.MemberKey,
		arg.Tier,
		arg.WorstBitErrorRate,
		arg.SweepID,
	)
	var id pgtype.UUID
	err := row.Scan(&id)
	return id, err
}