Run modernise on the project

This will be available in "go fix" within Go 1.26 but in the meantime:

go run golang.org/x/tools/gopls/internal/analysis/modernize/cmd/modernize@latest -fix -test ./...

backend/imagemanager.go

@@ -46,7 +46,7 @@ type ImageManager struct {
 	maxOnDiskCacheSizeBytes    int64
 	filesWrittenSinceLastPrune bool
 
-	serverFetchSema chan interface{}
+	serverFetchSema chan any
 }
 
 // NewImageManager returns a new ImageManager.
@@ -64,7 +64,7 @@ func NewImageManager(ctx context.Context, s *ServerManager, baseCacheDir string)
 			DefaultTTL: 1 * time.Minute,
 		},
 		maxOnDiskCacheSizeBytes: defaultDiskCacheSizeBytes,
-		serverFetchSema:         make(chan interface{}, maxConcurrentServerFetches),
+		serverFetchSema:         make(chan any, maxConcurrentServerFetches),
 	}
 	s.OnLogout(func() {
 		i.thumbnailCache.Clear()

backend/ipc/server.go

@@ -144,7 +144,7 @@ func (s *serverImpl) createHandler() http.Handler {
 		search = strings.ToLower(search)
 
 		filtered := make([]mediaprovider.Playlist, 0)
-		for i := 0; i < len(all); i++ {
+		for i := range all {
 			playlist := all[i]
 			name := strings.ReplaceAll(playlist.Name, " ", "")
 			name = strings.ToLower(name)

backend/mediaprovider/jellyfin/jellyfinmediaprovider.go

@@ -344,7 +344,7 @@ func (j *jellyfinMediaProvider) SetFavorite(params mediaprovider.RatingFavoriteP
 	}
 
 	numBatches := int(math.Ceil(float64(len(allIDs)) / float64(batchSize)))
-	for i := 0; i < numBatches; i++ {
+	for i := range numBatches {
 		var wg sync.WaitGroup
 		batchSetFavorite(i*batchSize, &wg)
 		wg.Wait()

backend/mediaprovider/subsonic/subsonicmediaprovider.go

@@ -342,7 +342,7 @@ func (s *subsonicMediaProvider) SetRating(params mediaprovider.RatingFavoritePar
 	}
 
 	numBatches := int(math.Ceil(float64(len(params.TrackIDs)) / float64(batchSize)))
-	for i := 0; i < numBatches; i++ {
+	for i := range numBatches {
 		var wg sync.WaitGroup
 		batchSetRating(i*batchSize, &wg)
 		wg.Wait()

backend/playbackmanager.go

@@ -498,7 +498,7 @@ func (p *PlaybackManager) PlayRandomAlbums(genreName string) error {
 	}
 	iter := mp.IterateAlbums(mediaprovider.AlbumSortRandom, mediaprovider.NewAlbumFilter(options))
 	insertMode := Replace
-	for i := 0; i < 20; i++ {
+	for i := range 20 {
 		al := iter.Next()
 		if al == nil {
 			break

backend/player/dlna/dlnaplayer.go

@@ -618,7 +618,7 @@ func (d *DLNAPlayer) lookupProxyURL(key string) (string, bool) {
 	d.proxyURLLock.Lock()
 	defer d.proxyURLLock.Unlock()
 
-	for i := 0; i < len(d.proxyURLs); i++ {
+	for i := range len(d.proxyURLs) {
 		if d.proxyURLs[i].key == key {
 			url := d.proxyURLs[i].url
 			// Move accessed entry to the most recent position
@@ -632,7 +632,7 @@ func (d *DLNAPlayer) lookupProxyURL(key string) (string, bool) {
 
 func (d *DLNAPlayer) _updateProxyURL(key, url string) {
 	// Check if the key already exists, and if so, move it to the most recently used position
-	for i := 0; i < len(d.proxyURLs); i++ {
+	for i := range len(d.proxyURLs) {
 		if d.proxyURLs[i].key == key {
 			if i < len(d.proxyURLs)-1 {
 				// Shift elements to the left from found position to the end
@@ -652,19 +652,19 @@ func (d *DLNAPlayer) _updateProxyURL(key, url string) {
 
 type retryLogger struct{}
 
-func (retryLogger) Error(msg string, keysAndValues ...interface{}) {
+func (retryLogger) Error(msg string, keysAndValues ...any) {
 	log.Println(msg, keysAndValues)
 }
 
-func (retryLogger) Info(msg string, keysAndValues ...interface{}) {
+func (retryLogger) Info(msg string, keysAndValues ...any) {
 	log.Println(msg, keysAndValues)
 }
 
-func (retryLogger) Warn(msg string, keysAndValues ...interface{}) {
+func (retryLogger) Warn(msg string, keysAndValues ...any) {
 	log.Println(msg, keysAndValues)
 }
 
-func (retryLogger) Debug(msg string, keysAndValues ...interface{}) {
+func (retryLogger) Debug(msg string, keysAndValues ...any) {
 	// log only retries, not every request
 	if strings.Contains(msg, "retrying request") {
 		log.Println(msg, keysAndValues)

backend/waveformimage.go

@@ -86,7 +86,7 @@ func (w *WaveformImageJob) Get() *WaveformImage {
 	result := NewWaveformImage()
 
 	// Copy each scanline from w.img to result
-	for y := 0; y < height; y++ {
+	for y := range height {
 		srcOffset := w.img.PixOffset(0, y)
 		dstOffset := result.PixOffset(0, y)
 		copy(result.Pix[dstOffset:dstOffset+w.progress*4], w.img.Pix[srcOffset:srcOffset+w.progress*4])
@@ -226,7 +226,7 @@ func generateWaveformImage(ctx context.Context, data *waveformData, job *Wavefor
 	opaqueColor := color.NRGBA{R: 255, G: 255, B: 255, A: 255}
 	translucentColor := color.NRGBA{R: 255, G: 255, B: 255, A: 128}
 
-	for x := 0; x < 1024; x++ {
+	for x := range 1024 {
 		for data.progress <= x {
 			if data.done {
 				return
@@ -341,7 +341,7 @@ func analyzeWavFile(ctx context.Context, transcodeFile string, data *waveformDat
 		}
 
 		// Process samples
-		for i := 0; i < n; i++ {
+		for i := range n {
 			sample := float64(buf.Data[i]) / float64(1<<15) // Normalize to [-1, 1]
 			chunkSamples = append(chunkSamples, sample)