From 50a5457a9a1764606a2cb090438ed0b629821989 Mon Sep 17 00:00:00 2001
From: Quentin <quentin@deuxfleurs.fr>
Date: Tue, 31 Aug 2021 10:31:26 +0200
Subject: [PATCH] WIP rename

---
 s3_fs.go | 46 +++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 45 insertions(+), 1 deletion(-)

diff --git a/s3_fs.go b/s3_fs.go
index 93ce8ac..f8983ef 100644
--- a/s3_fs.go
+++ b/s3_fs.go
@@ -95,7 +95,51 @@ func (s S3FS) RemoveAll(ctx context.Context, name string) error {
 
 func (s S3FS) Rename(ctx context.Context, oldName, newName string) error {
 	s.ctx = ctx
-	return errors.New("Not implemented Rename")
+
+	po := NewS3Path(oldName)
+	pn := NewS3Path(newName)
+	if po.class == ROOT || pn.class == ROOT {
+		return errors.New("Unable to rename root folder")
+	} else if po.class == BUCKET || pn.class == BUCKET {
+		log.Println("Moving a bucket is not implemented yet")
+		return nil
+	}
+
+	//Check that newName is not inside oldName
+	if len(newName) > len(oldName) && newName[:len(oldName)] == oldName {
+		return errors.New("Cannot move an entity inside itself (eg. moving /data in /data/test is impossible)")
+	}
+
+	//Gather all keys, copy the object, delete the original
+	objCh := s.mc.ListObjects(s.ctx, po.bucket, minio.ListObjectsOptions{Prefix: po.key, Recursive: true})
+	for obj := range objCh {
+		log.Println("found object", obj)
+		src := minio.CopySrcOptions{
+			Bucket: po.bucket,
+			Object: obj.Key,
+		}
+
+		dst := minio.CopyDestOptions{
+			Bucket: pn.bucket,
+			Object: path.Join(pn.key, obj.Key[len(po.key):]),
+		}
+
+		_, err := s.mc.CopyObject(s.ctx, dst, src)
+		log.Println("copy", obj)
+		if err != nil {
+			log.Println("copy err", err)
+			return err
+		}
+
+		log.Println("delete", obj)
+		err = s.mc.RemoveObject(s.ctx, po.bucket, obj.Key, minio.RemoveObjectOptions{})
+		if err != nil /*&& err.Code != 200*/ /* @FIXME workaround for garage's bug #98 */ {
+			log.Println("delete err", err)
+			return err
+		}
+	}
+
+	return nil
 }
 
 func (s S3FS) Stat(ctx context.Context, name string) (os.FileInfo, error) {