Better workaround for Go 1.20 missing context.WithoutCancel

scanner/rescanall.go

@@ -4,30 +4,8 @@ package scanner
 
 import (
 	"context"
-
-	"github.com/navidrome/navidrome/core"
-	"github.com/navidrome/navidrome/log"
 )
 
-// TODO: Move this to scanner/scanner.go when we drop support for go 1.20
-func (s *scanner) RescanAll(ctx context.Context, fullRescan bool) error {
-	ctx = context.WithoutCancel(ctx)
-	if !isScanning.TryLock() {
-		log.Debug("Scanner already running, ignoring request for rescan.")
-		return ErrAlreadyScanning
-	}
-	defer isScanning.Unlock()
-
-	var hasError bool
-	for folder := range s.folders {
-		err := s.rescan(ctx, folder, fullRescan)
-		hasError = hasError || err != nil
-	}
-	if hasError {
-		log.Error("Errors while scanning media. Please check the logs")
-		core.WriteAfterScanMetrics(ctx, s.ds, false)
-		return ErrScanError
-	}
-	core.WriteAfterScanMetrics(ctx, s.ds, true)
-	return nil
+func contextWithoutCancel(ctx context.Context) context.Context {
+	return context.WithoutCancel(ctx)
 }