Fix small lint errors found by gocritic

.golangci.yml

@@ -2,10 +2,10 @@ linters:
   enable:
     - bodyclose
     - deadcode
+    - depguard
     - dogsled
     - errcheck
     - gocyclo
-    - goimports
     - goprintffuncname
     - gosec
     - gosimple

core/agents/agents.go

@@ -106,7 +106,7 @@ func (a *Agents) GetSimilar(ctx context.Context, id, name, mbid string, limit in
 			continue
 		}
 		similar, err := agent.GetSimilar(ctx, id, name, mbid, limit)
-		if len(similar) >= 0 && err == nil {
+		if len(similar) > 0 && err == nil {
 			log.Debug(ctx, "Got Similar Artists", "agent", ag.AgentName(), "artist", name, "similar", similar, "elapsed", time.Since(start))
 			return similar, err
 		}

core/scrobbler/buffered_scrobbler.go

@@ -8,7 +8,7 @@ import (
 	"github.com/navidrome/navidrome/model"
 )
 
-func NewBufferedScrobbler(ds model.DataStore, s Scrobbler, service string) *bufferedScrobbler {
+func newBufferedScrobbler(ds model.DataStore, s Scrobbler, service string) *bufferedScrobbler {
 	b := &bufferedScrobbler{ds: ds, wrapped: s, service: service}
 	b.wakeSignal = make(chan struct{}, 1)
 	go b.run()

core/scrobbler/play_tracker.go

@@ -53,7 +53,7 @@ func GetPlayTracker(ds model.DataStore, broker events.Broker) PlayTracker {
 		for name, constructor := range constructors {
 			s := constructor(ds)
 			if conf.Server.DevEnableBufferedScrobble {
-				s = NewBufferedScrobbler(ds, s, name)
+				s = newBufferedScrobbler(ds, s, name)
 			}
 			p.scrobblers[name] = s
 		}

core/transcoder/ffmpeg.go

@@ -47,8 +47,8 @@ func (ff *ffmpeg) Start(ctx context.Context, command, path string, maxBitRate in
 func createTranscodeCommand(cmd, path string, maxBitRate int) []string {
 	split := strings.Split(cmd, " ")
 	for i, s := range split {
-		s = strings.Replace(s, "%s", path, -1)
-		s = strings.Replace(s, "%b", strconv.Itoa(maxBitRate), -1)
+		s = strings.ReplaceAll(s, "%s", path)
+		s = strings.ReplaceAll(s, "%b", strconv.Itoa(maxBitRate))
 		split[i] = s
 	}
 

persistence/mediafile_repository.go

@@ -98,7 +98,7 @@ func (r mediaFileRepository) FindByPath(path string) (*model.MediaFile, error) {
 func cleanPath(path string) string {
 	path = filepath.Clean(path)
 	if !strings.HasSuffix(path, string(os.PathSeparator)) {
-		path = path + string(os.PathSeparator)
+		path += string(os.PathSeparator)
 	}
 	return path
 }

utils/index_group_parser.go

@@ -25,7 +25,7 @@ func ParseIndexGroups(spec string) IndexGroups {
 		sub := re.FindStringSubmatch(g)
 		if len(sub) > 0 {
 			i := 0
-			chars := strings.SplitN(sub[2], "", -1)
+			chars := strings.Split(sub[2], "")
 			for _, c := range chars {
 				parsed[c] = sub[1]
 				i++