feat: change segment_size to decimal in Product model

flower/utils/mingdaoyun/parsers.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+from decimal import Decimal, InvalidOperation
 from typing import Any
 
 from .mappings import customer_type_map, fabric_type_map, product_type_map
@@ -26,8 +27,16 @@ def pick_product(fields: dict[str, Any]) -> Product:
         except (TypeError, ValueError):
             return None
 
+    def _to_decimal(value):
+        if value in ("", None):
+            return None
+        try:
+            return Decimal(str(value))
+        except (InvalidOperation, TypeError, ValueError):
+            return None
+
     data["pieces"] = _to_int(data.get("pieces"))
-    data["segment_size"] = _to_int(data.get("segment_size"))
+    data["segment_size"] = _to_decimal(data.get("segment_size"))
 
     return Product(**data)