email service and template using resend

server/services/payment.service.ts

@@ -11,6 +11,7 @@ import {
 } from "@/lib/midtrans";
 import { isTripDepartureDayPast } from "@/lib/trip-dates";
 import { payoutService } from "@/server/services/payout.service";
+import { emailService } from "@/lib/email/send";
 
 const SERIAL_TX_ATTEMPTS = 6;
 
@@ -177,6 +178,12 @@ async function applyGatewayStatus(
       });
       const isConflict =
         newStatus === "PAID" && finalBooking?.status !== "PAID";
+
+      // Notif email user kalau payment benar-benar berhasil di-apply ke booking.
+      if (newStatus === "PAID" && !isConflict) {
+        void notifyPaymentPaid(payment.id);
+      }
+
       return {
         ok: true,
         status: isConflict ? "booking_conflict" : "updated",
@@ -469,6 +476,34 @@ export const paymentService = {
   },
 };
 
+async function notifyPaymentPaid(paymentId: string) {
+  const payment = await prisma.payment.findUnique({
+    where: { id: paymentId },
+    include: {
+      booking: {
+        include: {
+          user: { select: { email: true, name: true } },
+          trip: { select: { id: true, title: true } },
+        },
+      },
+    },
+  });
+  if (!payment) return;
+  await emailService.send({
+    to: payment.booking.user.email,
+    idempotencyKey: `payment_paid-${payment.id}`,
+    template: {
+      template: "payment_paid",
+      data: {
+        userName: payment.booking.user.name,
+        tripTitle: payment.booking.trip.title,
+        tripId: payment.booking.trip.id,
+        amount: payment.amount,
+      },
+    },
+  });
+}
+
 // Re-export untuk testing langsung kalau perlu (tetap private dari modul lain).
 export const _internal = { applyGatewayStatus };
 export type { MidtransTransactionStatus };