fix issue with Ed Sheeran albums

app/utils/hashing.py

@@ -1,5 +1,4 @@
 import hashlib
-import re
 
 from unidecode import unidecode
 
@@ -8,26 +7,21 @@ def create_hash(*args: str, decode=False, limit=10) -> str:
     """
     Creates a simple hash for an album
     """
-    str_ = "".join(args)
+
+    def remove_non_alnum(token: str) -> str:
+        token = token.lower().strip().replace(" ", "")
+        t = "".join(t for t in token if t.isalnum())
+
+        if t == "":
+            return token
+
+        return t
+
+    str_ = "".join(remove_non_alnum(t) for t in args)
 
     if decode:
         str_ = unidecode(str_)
 
-    str_ = str_.lower().strip().replace(" ", "")
-    str_ = "".join(t for t in str_ if t.isalnum())
-    str_ = re.sub(r"[^a-zA-Z0-9\s]", "", str_)
     str_ = str_.encode("utf-8")
     str_ = hashlib.sha256(str_).hexdigest()
     return str_[-limit:]
-
-
-def create_folder_hash(*args: str, limit=10) -> str:
-    """
-    Creates a simple hash for an album
-    """
-    strings = [s.lower().strip().replace(" ", "") for s in args]
-
-    strings = ["".join([t for t in s if t.isalnum()]) for s in strings]
-    strings = [s.encode("utf-8") for s in strings]
-    strings = [hashlib.sha256(s).hexdigest()[-limit:] for s in strings]
-    return "".join(strings)