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Purge unused genres at the end of the scan

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Deluan 2021-07-16 18:32:22 -04:00 • committed by Deluan Quintão
parent b56e034ce3
commit c56c7c865e
2 changed files with 26 additions and 0 deletions
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21
persistence/genre_repository.go
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@ -3,6 +3,8 @@ package persistence
import (
"context"
"github.com/navidrome/navidrome/log"
"github.com/deluan/rest"
. "github.com/Masterminds/squirrel"
@ -68,5 +70,24 @@ func (r *genreRepository) NewInstance() interface{} {
return &model.Genre{}
}
func (r *genreRepository) purgeEmpty() error {
del := Delete(r.tableName).Where(`id in (
select genre.id from genre
left join album_genres ag on genre.id = ag.genre_id
left join artist_genres a on genre.id = a.genre_id
left join media_file_genres mfg on genre.id = mfg.genre_id
where ag.genre_id is null
and a.genre_id is null
and mfg.genre_id is null
)`)
c, err := r.executeSQL(del)
if err == nil {
if c > 0 {
log.Debug(r.ctx, "Purged unused genres", "totalDeleted", c)
}
}
return err
}
var _ model.GenreRepository = (*genreRepository)(nil)
var _ model.ResourceRepository = (*genreRepository)(nil)

5
persistence/persistence.go
View file

@ -165,6 +165,11 @@ func (s *SQLStore) GC(ctx context.Context, rootFolder string) error {
if err != nil {
log.Error(ctx, "Error tidying up playlists", err)
}
err = s.Genre(ctx).(*genreRepository).purgeEmpty()
if err != nil {
log.Error(ctx, "Error removing unused genres", err)
return err
}
return err
}