fix(scanner): make activity panel update rate configurable

conf/configuration.go

@@ -100,6 +100,7 @@ type configOptions struct {
 	DevAutoCreateAdminPassword       string
 	DevAutoLoginUsername             string
 	DevActivityPanel                 bool
+	DevActivityPanelUpdateRate       time.Duration
 	DevSidebarPlaylists              bool
 	DevEnableBufferedScrobble        bool
 	DevShowArtistPage                bool
@@ -370,6 +371,7 @@ func init() {
 	viper.SetDefault("devautocreateadminpassword", "")
 	viper.SetDefault("devautologinusername", "")
 	viper.SetDefault("devactivitypanel", true)
+	viper.SetDefault("devactivitypanelupdaterate", 300*time.Millisecond)
 	viper.SetDefault("enablesharing", false)
 	viper.SetDefault("shareurl", "")
 	viper.SetDefault("defaultdownloadableshare", false)

scanner/scanner.go

@@ -7,6 +7,7 @@ import (
 	"sync"
 	"time"
 
+	"github.com/navidrome/navidrome/conf"
 	"github.com/navidrome/navidrome/core"
 	"github.com/navidrome/navidrome/core/artwork"
 	"github.com/navidrome/navidrome/log"
@@ -119,7 +120,7 @@ func (s *scanner) startProgressTracker(library string) (chan uint32, context.Can
 	// Must be a new context (not the one passed to the scan method) to allow broadcasting the scan status to all clients
 	ctx, cancel := context.WithCancel(context.Background())
 	progress := make(chan uint32, 1000)
-	limiter := rate.Sometimes{Every: 10}
+	limiter := rate.Sometimes{Interval: conf.Server.DevActivityPanelUpdateRate}
 	go func() {
 		s.broker.SendMessage(ctx, &events.ScanStatus{Scanning: true, Count: 0, FolderCount: 0})
 		defer func() {