implments cronjob to do the sheet archiving

src/utils/misc.py

@@ -4,4 +4,14 @@ from fastapi.encoders import jsonable_encoder
 def custom_jsonable_encoder(obj):
     if isinstance(obj, bytes):
         return base64.b64encode(obj).decode('utf-8')
-    return jsonable_encoder(obj)
+    return jsonable_encoder(obj)
+
+def fnv1a_hash_mod(s: str, modulo:int) -> int:
+    # receives a string and returns a number in [0:modulo-1], ensures an even distribution over the modulo range
+    hash = 0x811c9dc5 # FNV offset basis
+    fnv_prime = 0x01000193 # FNV prime
+    for char in s:
+        hash ^= ord(char)
+        hash *= fnv_prime
+        hash &= 0xFFFFFFFF # Keep it 32-bit
+    return (hash if hash < 0x80000000 else hash - 0x100000000) % modulo