fix: calculating telegram starts amount

app/config.py

@@ -1,6 +1,7 @@
 import hashlib
 import hmac
 import logging
+import math
 import os
 import re
 import html
@@ -1280,7 +1281,7 @@ class Settings(BaseSettings):
         return stars * self.get_stars_rate()
     
     def rubles_to_stars(self, rubles: float) -> int:
-        return max(1, int(rubles / self.get_stars_rate()))
+        return max(1, math.ceil(rubles / self.get_stars_rate()))
 
     def get_admin_notifications_chat_id(self) -> Optional[int]:
         if not self.ADMIN_NOTIFICATIONS_CHAT_ID:

app/services/payment/stars.py

@@ -56,14 +56,7 @@ class TelegramStarsMixin:
 
             # Если количество звёзд не задано, вычисляем его из курса.
             if stars_amount is None:
-                rate = Decimal(str(settings.get_stars_rate()))
-                if rate <= 0:
-                    raise ValueError("Stars rate must be positive")
-
-                normalized_stars = (amount_rubles / rate).to_integral_value(
-                    rounding=ROUND_FLOOR
-                )
-                stars_amount = int(normalized_stars) or 1
+                stars_amount = settings.rubles_to_stars(float(amount_rubles))
 
             if stars_amount <= 0:
                 raise ValueError("Stars amount must be positive")