feat(promo): Добавлена поддержка промокодов на скидку для всех платёжных систем

bot/handlers/user/subscription/payments_severpay.py

@@ -9,6 +9,7 @@ from bot.middlewares.i18n import JsonI18n
 from bot.services.severpay_service import SeverPayService
 from config.settings import Settings
 from db.dal import payment_dal
+from bot.handlers.user.subscription.payment_discount_helper import apply_discount_to_payment
 
 router = Router(name="user_subscription_payments_severpay_router")
 
@@ -20,6 +21,7 @@ async def pay_severpay_callback_handler(
     i18n_data: dict,
     severpay_service: SeverPayService,
     session: AsyncSession,
+    promo_code_service=None,
 ):
     current_lang = i18n_data.get("current_language", settings.DEFAULT_LANGUAGE)
     i18n: Optional[JsonI18n] = i18n_data.get("i18n_instance")
@@ -67,14 +69,22 @@ async def pay_severpay_callback_handler(
     )
     currency_code = settings.DEFAULT_CURRENCY_SYMBOL or "RUB"
 
+    # Apply active discount if exists
+    final_price_rub, discount_amount, promo_code_id = await apply_discount_to_payment(
+        session, user_id, price_rub, promo_code_service
+    )
+
     payment_record_payload = {
         "user_id": user_id,
-        "amount": price_rub,
+        "amount": final_price_rub,
+        "original_amount": price_rub if discount_amount else None,
+        "discount_applied": discount_amount,
         "currency": currency_code,
         "status": "pending_severpay",
         "description": payment_description,
         "subscription_duration_months": int(months),
         "provider": "severpay",
+        "promo_code_id": promo_code_id,
     }
 
     try:
@@ -100,7 +110,7 @@ async def pay_severpay_callback_handler(
         payment_db_id=payment_record.payment_id,
         user_id=user_id,
         months=months,
-        amount=price_rub,
+        amount=final_price_rub,
         currency=currency_code,
         description=payment_description,
     )