Update stats of Smart Playlist when it is created

Also fix loadTracks

core/playlists.go

@@ -11,6 +11,7 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
+	"time"
 
 	"github.com/navidrome/navidrome/log"
 	"github.com/navidrome/navidrome/model"
@@ -156,6 +157,7 @@ func (s *playlists) updatePlaylist(ctx context.Context, newPls *model.Playlist)
 		newPls.Comment = pls.Comment
 		newPls.Owner = pls.Owner
 		newPls.Public = pls.Public
+		newPls.EvaluatedAt = time.Time{}
 	} else {
 		log.Info(ctx, "Adding synced playlist", "playlist", newPls.Name, "path", newPls.Path, "owner", owner)
 		newPls.Owner = owner

core/playlists_test.go

@@ -81,10 +81,10 @@ type mockedPlaylist struct {
 	model.PlaylistRepository
 }
 
-func (r *mockedPlaylist) FindByPath(path string) (*model.Playlist, error) {
+func (r *mockedPlaylist) FindByPath(string) (*model.Playlist, error) {
 	return nil, model.ErrNotFound
 }
 
-func (r *mockedPlaylist) Put(pls *model.Playlist) error {
+func (r *mockedPlaylist) Put(*model.Playlist) error {
 	return nil
 }