Refactor: blake3 hasing util functions

backend/utils/hash.py

@@ -1,29 +1,47 @@
 from blake3 import blake3
-
 from tqdm.auto import tqdm
 
 
-def compute_file_hash_black3(self, file_path):
-    """Compute BLAKE3 hash of the file"""
+def compute_blake3_hash(data, is_file=False, logger=None):
+    """
+    Compute BLAKE3 hash of a file or string.
+
+    Args:
+        data (str): File path (if is_file=True) or raw string.
+        is_file (bool): Whether the input is a file path. Defaults to False.
+        logger: Optional logger for error messages (e.g., Django `self` or `tqdm`).
+
+    Returns:
+        str: BLAKE3 hash or None if an error occurs.
+    """
     try:
         hasher = blake3()
-        with open(file_path, "rb") as f:
-            while chunk := f.read(65536):
-                hasher.update(chunk)
+
+        if is_file:
+            with open(data, "rb") as f:
+                while chunk := f.read(65536):
+                    hasher.update(chunk)
+        else:
+            hasher.update(data.encode())
+
         return hasher.hexdigest()
+
     except Exception as e:
-        # self.stdout.write(self.style.WARNING(f"Error computing file hash: {e}"))
-        tqdm.write(self.style.WARNING(f"Error computing file hash: {e}"))
+        error_message = f"Error computing hash: {e}"
+
+        if logger:
+            if hasattr(logger, "style") and hasattr(logger, "stdout"):  # Django command
+                logger.stdout.write(logger.style.WARNING(error_message))
+            else:  # Default to tqdm
+                tqdm.write(error_message)
+
         return None
 
 
-def compute_string_hash_black3(self, string):
-    """Compute BLAKE3 hash of the string"""
-    try:
-        hasher = blake3()
-        hasher.update(string.encode())
-        return hasher.hexdigest()
-    except Exception as e:
-        # self.stdout.write(self.style.WARNING(f"Error computing string hash: {e}"))
-        tqdm.write(self.style.WARNING(f"Error computing string hash: {e}"))
-        return None
+# Convenience wrappers for readability
+def compute_file_hash_blake3(file_path, logger=None):
+    return compute_blake3_hash(file_path, is_file=True, logger=logger)
+
+
+def compute_string_hash_blake3(string, logger=None):
+    return compute_blake3_hash(string, is_file=False, logger=logger)