fix(webhook): prevent duplicate customer emails by only sending on ORDER_CONFIRMED

Both ORDER_CREATED and ORDER_CONFIRMED were sending customer emails,
causing duplicates. Now only ORDER_CONFIRMED sends customer emails,
while both events still notify admins.

src/app/api/webhooks/saleor/route.ts

@@ -237,7 +237,7 @@ function parseOrderItems(lines: SaleorLineItem[], currency: string) {
   }));
 }
 
-async function handleOrderConfirmed(order: SaleorOrder) {
+async function handleOrderConfirmed(order: SaleorOrder, eventType: string) {
   const language = getCustomerLanguage(order);
   const currency = order.total.gross.currency;
   const customerName = getCustomerName(order);
@@ -245,6 +245,9 @@ async function handleOrderConfirmed(order: SaleorOrder) {
   const customerEmail = order.userEmail;
   const phone = order.shippingAddress?.phone || order.billingAddress?.phone;
 
+  // Only send customer email for ORDER_CONFIRMED, not ORDER_CREATED
+  // This prevents duplicate emails when both events fire
+  if (eventType === "ORDER_CONFIRMED") {
     await sendEmailToCustomer({
       to: customerEmail,
       subject:
@@ -269,7 +272,9 @@ async function handleOrderConfirmed(order: SaleorOrder) {
       language,
       idempotencyKey: `order-confirmed/${order.id}`,
     });
+  }
 
+  // Always send admin notification for both ORDER_CREATED and ORDER_CONFIRMED
   await sendEmailToAdmin({
     subject: `🎉 New Order #${order.number} - ${formatPrice(order.total.gross.amount, currency)}`,
     react: OrderConfirmation({
@@ -469,7 +474,7 @@ async function handleSaleorWebhook(
   switch (event) {
     case "ORDER_CREATED":
     case "ORDER_CONFIRMED":
-      await handleOrderConfirmed(order);
+      await handleOrderConfirmed(order, event);
       break;
     case "ORDER_FULFILLED":
       await handleOrderFulfilled(order);