Fix scrobble error spam in the logs.

Relates to #2831 and #2975

db/migration/20240426202913_add_id_to_scrobble_buffer.go

@@ -0,0 +1,30 @@
+package migrations
+
+import (
+	"context"
+	"database/sql"
+
+	"github.com/pressly/goose/v3"
+)
+
+func init() {
+	goose.AddMigrationContext(upAddIdToScrobbleBuffer, downAddIdToScrobbleBuffer)
+}
+
+func upAddIdToScrobbleBuffer(ctx context.Context, tx *sql.Tx) error {
+	_, err := tx.ExecContext(ctx, `
+delete from scrobble_buffer where user_id <> '';
+alter table scrobble_buffer add id varchar not null default '';
+create unique index scrobble_buffer_id_ix
+    on scrobble_buffer (id);
+`)
+	return err
+}
+
+func downAddIdToScrobbleBuffer(ctx context.Context, tx *sql.Tx) error {
+	_, err := tx.ExecContext(ctx, `
+drop index scrobble_buffer_id_ix;
+alter table scrobble_buffer drop id;
+`)
+	return err
+}

model/scrobble_buffer.go

@@ -3,11 +3,13 @@ package model
 import "time"
 
 type ScrobbleEntry struct {
-	MediaFile
+	ID          string
 	Service     string
-	UserID      string `structs:"user_id"`
+	UserID      string
 	PlayTime    time.Time
 	EnqueueTime time.Time
+	MediaFileID string
+	MediaFile
 }
 
 type ScrobbleEntries []ScrobbleEntry

persistence/scrobble_buffer_repository.go

@@ -6,6 +6,7 @@ import (
 	"time"
 
 	. "github.com/Masterminds/squirrel"
+	"github.com/google/uuid"
 	"github.com/navidrome/navidrome/model"
 	"github.com/pocketbase/dbx"
 )
@@ -37,6 +38,7 @@ func (r *scrobbleBufferRepository) UserIDs(service string) ([]string, error) {
 
 func (r *scrobbleBufferRepository) Enqueue(service, userId, mediaFileId string, playTime time.Time) error {
 	ins := Insert(r.tableName).SetMap(map[string]interface{}{
+		"id":            uuid.NewString(),
 		"user_id":       userId,
 		"service":       service,
 		"media_file_id": mediaFileId,
@@ -48,7 +50,8 @@ func (r *scrobbleBufferRepository) Enqueue(service, userId, mediaFileId string,
 }
 
 func (r *scrobbleBufferRepository) Next(service string, userId string) (*model.ScrobbleEntry, error) {
-	sql := Select().Columns("s.*, m.*").
+	// Put `s.*` last or else m.id overrides s.id
+	sql := Select().Columns("m.*, s.*").
 		From(r.tableName+" s").
 		LeftJoin("media_file m on m.id = s.media_file_id").
 		Where(And{
@@ -57,24 +60,20 @@ func (r *scrobbleBufferRepository) Next(service string, userId string) (*model.S
 		}).
 		OrderBy("play_time", "s.rowid").Limit(1)
 
-	res := model.ScrobbleEntries{}
-	// TODO Rewrite queryOne to use QueryRows, to workaround the recursive embedded structs issue
-	err := r.queryAll(sql, &res)
-	if errors.Is(err, model.ErrNotFound) || len(res) == 0 {
+	res := &model.ScrobbleEntry{}
+	err := r.queryOne(sql, res)
+	if errors.Is(err, model.ErrNotFound) {
 		return nil, nil
 	}
 	if err != nil {
 		return nil, err
 	}
-	return &res[0], nil
+	res.MediaFile.ID = res.MediaFileID
+	return res, nil
 }
 
 func (r *scrobbleBufferRepository) Dequeue(entry *model.ScrobbleEntry) error {
-	return r.delete(And{
-		Eq{"service": entry.Service},
-		Eq{"media_file_id": entry.MediaFile.ID},
-		Eq{"play_time": entry.PlayTime},
-	})
+	return r.delete(Eq{"id": entry.ID})
 }
 
 func (r *scrobbleBufferRepository) Length() (int64, error) {

persistence/sql_base_repository.go

@@ -157,8 +157,6 @@ func (r sqlRepository) toSQL(sq Sqlizer) (string, dbx.Params, error) {
 	return query, params, nil
 }
 
-// Note: Due to a bug in the QueryRow method, this function does not map any embedded structs (ex: annotations)
-// In this case, use the queryAll method and get the first item of the returned list
 func (r sqlRepository) queryOne(sq Sqlizer, response interface{}) error {
 	query, args, err := r.toSQL(sq)
 	if err != nil {