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);
@@ -245,31 +245,36 @@ async function handleOrderConfirmed(order: SaleorOrder) {
   const customerEmail = order.userEmail;
   const phone = order.shippingAddress?.phone || order.billingAddress?.phone;
 
-  await sendEmailToCustomer({
-    to: customerEmail,
-    subject:
-      language === "sr"
-        ? `Potvrda narudžbine #${order.number}`
-        : language === "de"
-          ? `Bestellbestätigung #${order.number}`
-          : language === "fr"
-            ? `Confirmation de commande #${order.number}`
-            : `Order Confirmation #${order.number}`,
-    react: OrderConfirmation({
+  // 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:
+        language === "sr"
+          ? `Potvrda narudžbine #${order.number}`
+          : language === "de"
+            ? `Bestellbestätigung #${order.number}`
+            : language === "fr"
+              ? `Confirmation de commande #${order.number}`
+              : `Order Confirmation #${order.number}`,
+      react: OrderConfirmation({
+        language,
+        orderId: order.id,
+        orderNumber: order.number,
+        customerEmail,
+        customerName,
+        items: parseOrderItems(order.lines, currency),
+        total: formatPrice(order.total.gross.amount, currency),
+        shippingAddress: formatAddress(order.shippingAddress),
+        siteUrl: SITE_URL,
+      }),
       language,
-      orderId: order.id,
-      orderNumber: order.number,
-      customerEmail,
-      customerName,
-      items: parseOrderItems(order.lines, currency),
-      total: formatPrice(order.total.gross.amount, currency),
-      shippingAddress: formatAddress(order.shippingAddress),
-      siteUrl: SITE_URL,
-    }),
-    language,
-    idempotencyKey: `order-confirmed/${order.id}`,
-  });
+      idempotencyKey: `order-confirmed/${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);