invoices, order handling, db updates

misc/utils.py

@@ -1,3 +1,6 @@
+import base64
+import json
+from typing import Any
 import phonenumbers
 from phonenumbers import NumberParseException
 
@@ -8,3 +11,17 @@ def is_valid_phone(phone: str, region="RU") -> bool:
         return phonenumbers.is_valid_number(parsed)
     except NumberParseException:
         return False
+
+
+def dict_to_b64(payload: dict) -> str:
+    json_str = json.dumps(payload, separators=(",", ":"))
+    json_bytes = json_str.encode("utf-8")
+    b64 = base64.urlsafe_b64encode(json_bytes).decode("ascii")
+    return b64.rstrip("=")
+
+
+def b64_to_dict(payload: str) -> dict["str", Any]:
+    padding = "=" * (-len(payload) % 4)
+    payload += padding
+    json_bytes = base64.urlsafe_b64decode(payload)
+    return json.loads(json_bytes.decode("utf-8"))