fixed changed customer in stripe

modules/serviceCenter/services/serviceSubscription/mainServiceSubscription.py

@@ -283,14 +283,34 @@ class SubscriptionService:
             subscriptionData["trial_end"] = trialEndTs
             self._interface.updateFields(subRecord["id"], {"effectiveFrom": periodEnd.isoformat()})
 
-        session = stripe.checkout.Session.create(
-            mode="subscription",
-            customer=stripeCustomerId,
-            line_items=lineItems,
-            success_url=successUrl,
-            cancel_url=cancelUrl,
-            subscription_data=subscriptionData,
-        )
+        session = None
+        for attempt in range(2):
+            try:
+                session = stripe.checkout.Session.create(
+                    mode="subscription",
+                    customer=stripeCustomerId,
+                    line_items=lineItems,
+                    success_url=successUrl,
+                    cancel_url=cancelUrl,
+                    subscription_data=subscriptionData,
+                )
+                break
+            except Exception as e:
+                if attempt == 0 and self._isStripeMissingCustomerError(e):
+                    logger.warning(
+                        "Stripe reports missing customer %s for mandate %s — "
+                        "clearing stored stripeCustomerId (wrong account, deleted customer, or copied DB).",
+                        stripeCustomerId,
+                        mandateId,
+                    )
+                    self._clearStoredStripeCustomerId(mandateId)
+                    stripeCustomerId = self._resolveStripeCustomer(mandateId)
+                    if not stripeCustomerId:
+                        raise ValueError(
+                            f"Could not recreate Stripe customer for mandate {mandateId}"
+                        ) from e
+                    continue
+                raise
 
         if not session or not session.url:
             raise ValueError("Stripe Checkout Session creation failed")
@@ -298,6 +318,32 @@ class SubscriptionService:
         logger.info("Checkout session %s created for mandate %s, plan %s", session.id, mandateId, plan.planKey)
         return session.url
 
+    @staticmethod
+    def _isStripeMissingCustomerError(exc: BaseException) -> bool:
+        code = getattr(exc, "code", None)
+        param = getattr(exc, "param", None)
+        if code == "resource_missing" and param == "customer":
+            return True
+        body = getattr(exc, "json_body", None)
+        if isinstance(body, dict):
+            err = body.get("error")
+            if isinstance(err, dict):
+                return err.get("code") == "resource_missing" and err.get("param") == "customer"
+        return False
+
+    def _clearStoredStripeCustomerId(self, mandateId: str) -> None:
+        try:
+            from modules.interfaces.interfaceDbBilling import getInterface as getBillingInterface
+
+            billingIf = getBillingInterface(self.currentUser, mandateId)
+            settings = billingIf.getSettings(mandateId)
+            if not settings or not settings.get("stripeCustomerId"):
+                return
+            billingIf.updateSettings(settings["id"], {"stripeCustomerId": None})
+            logger.info("Cleared stripeCustomerId on billing settings for mandate %s", mandateId)
+        except Exception as e:
+            logger.error("Failed to clear stripeCustomerId for mandate %s: %s", mandateId, e)
+
     def _resolveStripeCustomer(self, mandateId: str) -> Optional[str]:
         try:
             from modules.interfaces.interfaceDbBilling import getInterface as getBillingInterface