feat(db): add paged + count queries for library reads

internal/db/dbq/artists.sql.go

@@ -11,6 +11,28 @@ import (
 	"github.com/jackc/pgx/v5/pgtype"
 )
 
+const countArtists = `-- name: CountArtists :one
+SELECT COUNT(*) FROM artists
+`
+
+func (q *Queries) CountArtists(ctx context.Context) (int64, error) {
+	row := q.db.QueryRow(ctx, countArtists)
+	var count int64
+	err := row.Scan(&count)
+	return count, err
+}
+
+const countArtistsMatching = `-- name: CountArtistsMatching :one
+SELECT COUNT(*) FROM artists WHERE name ILIKE '%' || $1::text || '%'
+`
+
+func (q *Queries) CountArtistsMatching(ctx context.Context, dollar_1 string) (int64, error) {
+	row := q.db.QueryRow(ctx, countArtistsMatching, dollar_1)
+	var count int64
+	err := row.Scan(&count)
+	return count, err
+}
+
 const getArtistByID = `-- name: GetArtistByID :one
 SELECT id, name, sort_name, mbid, created_at, updated_at FROM artists WHERE id = $1
 `
@@ -78,6 +100,79 @@ func (q *Queries) ListArtists(ctx context.Context) ([]Artist, error) {
 	return items, nil
 }
 
+const listArtistsAlpha = `-- name: ListArtistsAlpha :many
+SELECT id, name, sort_name, mbid, created_at, updated_at FROM artists ORDER BY sort_name, name, id LIMIT $1 OFFSET $2
+`
+
+type ListArtistsAlphaParams struct {
+	Limit  int32
+	Offset int32
+}
+
+func (q *Queries) ListArtistsAlpha(ctx context.Context, arg ListArtistsAlphaParams) ([]Artist, error) {
+	rows, err := q.db.Query(ctx, listArtistsAlpha, arg.Limit, arg.Offset)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []Artist
+	for rows.Next() {
+		var i Artist
+		if err := rows.Scan(
+			&i.ID,
+			&i.Name,
+			&i.SortName,
+			&i.Mbid,
+			&i.CreatedAt,
+			&i.UpdatedAt,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const listArtistsNewest = `-- name: ListArtistsNewest :many
+SELECT id, name, sort_name, mbid, created_at, updated_at FROM artists ORDER BY created_at DESC, id DESC LIMIT $1 OFFSET $2
+`
+
+type ListArtistsNewestParams struct {
+	Limit  int32
+	Offset int32
+}
+
+// Secondary id tiebreaker keeps pagination stable when created_at ties.
+func (q *Queries) ListArtistsNewest(ctx context.Context, arg ListArtistsNewestParams) ([]Artist, error) {
+	rows, err := q.db.Query(ctx, listArtistsNewest, arg.Limit, arg.Offset)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []Artist
+	for rows.Next() {
+		var i Artist
+		if err := rows.Scan(
+			&i.ID,
+			&i.Name,
+			&i.SortName,
+			&i.Mbid,
+			&i.CreatedAt,
+			&i.UpdatedAt,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
 const searchArtists = `-- name: SearchArtists :many
 SELECT id, name, sort_name, mbid, created_at, updated_at FROM artists
 WHERE name ILIKE '%' || $1 || '%'