fix(dbfs): file modified_at should not be updated by ent

pkg/filemanager/fs/dbfs/props.go

@@ -3,6 +3,7 @@ package dbfs
 import (
 	"context"
 	"fmt"
+	"time"
 
 	"github.com/cloudreve/Cloudreve/v4/inventory"
 	"github.com/cloudreve/Cloudreve/v4/inventory/types"
@@ -100,6 +101,7 @@ func (f *DBFS) PatchMetadata(ctx context.Context, path []*fs.URI, metas ...fs.Me
 	metadataMap := make(map[string]string)
 	privateMap := make(map[string]bool)
 	deleted := make([]string, 0)
+	updateModifiedAt := false
 	for _, meta := range metas {
 		if meta.Remove {
 			deleted = append(deleted, meta.Key)
@@ -109,6 +111,9 @@ func (f *DBFS) PatchMetadata(ctx context.Context, path []*fs.URI, metas ...fs.Me
 		if meta.Private {
 			privateMap[meta.Key] = meta.Private
 		}
+		if meta.UpdateModifiedAt {
+			updateModifiedAt = true
+		}
 	}
 
 	fc, tx, ctx, err := inventory.WithTx(ctx, f.fileClient)
@@ -128,6 +133,13 @@ func (f *DBFS) PatchMetadata(ctx context.Context, path []*fs.URI, metas ...fs.Me
 				return fmt.Errorf("failed to remove metadata: %w", err)
 			}
 		}
+
+		if updateModifiedAt {
+			if err := fc.UpdateModifiedAt(ctx, target.Model, time.Now()); err != nil {
+				_ = inventory.Rollback(tx)
+				return fmt.Errorf("failed to update file modified at: %w", err)
+			}
+		}
 	}
 
 	if err := inventory.Commit(tx); err != nil {