From f60cedce7c26a35a41e85d2c2144a403a657a348 Mon Sep 17 00:00:00 2001
From: philogicae <38438271+philogicae@users.noreply.github.com>
Date: Tue, 20 Feb 2024 13:17:32 +0200
Subject: [PATCH] Revert fix on enum_as_str

---
 src/aleph/sdk/chains/common.py | 4 ++--
 src/aleph/sdk/utils.py         | 6 +++---
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/aleph/sdk/chains/common.py b/src/aleph/sdk/chains/common.py
index 9f6b45f4..3c7e634e 100644
--- a/src/aleph/sdk/chains/common.py
+++ b/src/aleph/sdk/chains/common.py
@@ -27,9 +27,9 @@ def get_verification_buffer(message: Dict) -> bytes:
     # Convert Enum values to strings
     return "\n".join(
         (
-            enum_as_str(message["chain"]),
+            enum_as_str(message["chain"]) or "",
             message["sender"],
-            enum_as_str(message["type"]),
+            enum_as_str(message["type"]) or "",
             message["item_hash"],
         )
     ).encode()
diff --git a/src/aleph/sdk/utils.py b/src/aleph/sdk/utils.py
index f8042898..ab17f44a 100644
--- a/src/aleph/sdk/utils.py
+++ b/src/aleph/sdk/utils.py
@@ -115,14 +115,14 @@ async def copy_async_readable_to_buffer(
         buffer.write(chunk)
 
 
-def enum_as_str(obj: Optional[Union[str, Enum]]) -> str:
+def enum_as_str(obj: Optional[Union[str, Enum]]) -> Optional[str]:
     """Returns the value of an Enum, or the string itself when passing a string.
 
     Python 3.11 adds a new formatting of string enums.
     `str(MyEnum.value)` becomes `MyEnum.value` instead of `value`.
     """
-    if obj is None:
-        return ""
+    if not obj:
+        return None
     if not isinstance(obj, str):
         raise TypeError(f"Unsupported enum type: {type(obj)}")