Stripes Java API sending email when payment is successful - vaadin

Question

I'm implementing an annual subscription for my web app in java. So I first create a customer using the following code :
public Customer createCustomer() {
Stripe.apiKey = key;
Customer customer = null;
CustomerCreateParams params =
CustomerCreateParams
.builder()
.setEmail(this.person.getEmail())
.setPaymentMethod("pm_card_visa")
.setInvoiceSettings(
CustomerCreateParams.InvoiceSettings
.builder()
.setDefaultPaymentMethod("pm_card_visa")
.build()
).build();
try {
customer = Customer.create(params);
this.personService.update(customer.getId(), person);
subscribe(customer);
}catch (StripeException ex) {
System.out.println(ex.getMessage());
}
return customer;
}
and then I subscribe to a service with the price specified
public void subscribe(Customer customer) throws StripeException {
Stripe.apiKey = key;
List<Object> phases = new ArrayList<>();
List<Object> items = new ArrayList<>();
Map<String, Object> item1 = new HashMap<>();
item1.put(
"price",
"price_1KYAvqCLVCGN5jA7yGSJzUam"
);
item1.put("quantity", 1);
items.add(item1);
Map<String, Object> phase1 = new HashMap<>();
phase1.put("items", items);
phase1.put("iterations", 12);
phases.add(phase1);
Map<String, Object> params = new HashMap<>();
params.put("customer", customer.getId());
params.put("start_date", 1646485214);
params.put("end_behavior", "release");
params.put("phases", phases);
SubscriptionSchedule subscriptionSchedule = SubscriptionSchedule.create(params);
}
And when I run my code I can see in the dashboard the following logs
As I'm in test mode I don't know if it's in half to make a correct implementation of a subscription for a new customer who got a visa (as you can see I never ask for card id and card holder and CVC)
Thanks for your kindly support
EDIT :
I'm looking on the implementation of check out demo app written in Java and as I can see their is first an handler on create-checkout-session :
post("/create-checkout-session", (request, response) -> {
String domainUrl = dotenv.get("DOMAIN");
// Create new Checkout Session for the order
// Other optional params include:
// [billing_address_collection] - to display billing address details on the page
// [customer] - if you have an existing Stripe Customer ID
// [payment_intent_data] - lets capture the payment later
// [customer_email] - lets you prefill the email input in the form
// [automatic_tax] - to automatically calculate sales tax, VAT and GST in the checkout page
// For full details see https://stripe.com/docs/api/checkout/sessions/create
// ?session_id={CHECKOUT_SESSION_ID} means the redirect will have the session ID
// set as a query param
SessionCreateParams params = new SessionCreateParams.Builder()
.setSuccessUrl(domainUrl + "/success.html?session_id={CHECKOUT_SESSION_ID}")
.setCancelUrl(domainUrl + "/canceled.html")
.setMode(SessionCreateParams.Mode.SUBSCRIPTION)
.addLineItem(new SessionCreateParams.LineItem.Builder()
.setQuantity(1L)
.setPrice(request.queryParams("priceId"))
.build()
)
// .setAutomaticTax(SessionCreateParams.AutomaticTax.builder().setEnabled(true).build()).
.build();
try {
Session session = Session.create(params);
response.redirect(session.getUrl(), 303);
return "";
} catch(Exception e) {
Map<String, Object> messageData = new HashMap<>();
messageData.put("message", e.getMessage());
Map<String, Object> responseData = new HashMap<>();
responseData.put("error", messageData);
response.status(400);
return gson.toJson(responseData);
}
});
As I think I need to create another Vaadin view that will create this session