Enhance error handling and logging in CryptoPayService payment processing

- Added error handling for payment record creation and updates, ensuring database transactions are rolled back on failure.
- Implemented logging for errors during payment record creation and updates, improving traceability and debugging capabilities.
- Committed changes to ensure that payment records are properly persisted or rolled back in case of exceptions.

bot/services/crypto_pay_service.py

@@ -67,6 +67,8 @@ class CryptoPayService:
             logging.error("CryptoPayService not configured")
             return None
 
+        # Create pending payment in DB and commit to persist
+        try:
             payment_record = await payment_dal.create_payment_record(
                 session,
                 {
@@ -79,6 +81,14 @@ class CryptoPayService:
                     "provider": "cryptopay",
                 },
             )
+            await session.commit()
+        except Exception as e_db_create:
+            await session.rollback()
+            logging.error(
+                f"Failed to create cryptopay payment record for user {user_id}: {e_db_create}",
+                exc_info=True,
+            )
+            return None
         payload = json.dumps({
             "user_id": str(user_id),
             "subscription_months": str(months),
@@ -93,12 +103,21 @@ class CryptoPayService:
                 description=description,
                 payload=payload,
             )
+            try:
                 await payment_dal.update_provider_payment_and_status(
                     session,
                     payment_record.payment_id,
                     str(invoice.invoice_id),
                     str(invoice.status),
                 )
+                await session.commit()
+            except Exception as e_db_update:
+                await session.rollback()
+                logging.error(
+                    f"Failed to update cryptopay payment record {payment_record.payment_id}: {e_db_update}",
+                    exc_info=True,
+                )
+                return None
             return invoice.bot_invoice_url
         except Exception as e:
             logging.error(f"CryptoPay invoice creation failed: {e}", exc_info=True)