email service and template using resend

features/refund/actions.ts

@@ -6,6 +6,8 @@ import { authOptions } from "@/lib/auth";
 import { isAdminEmail } from "@/lib/admin";
 import { refundService } from "@/server/services/refund.service";
 import { auditLog } from "@/server/services/audit-log.service";
+import { emailService } from "@/lib/email/send";
+import { prisma } from "@/lib/prisma";
 import { createRefundSchema, refundDecisionSchema } from "./schemas";
 
 async function requireAdmin() {
@@ -51,6 +53,9 @@ export async function createRefundAction(formData: FormData) {
         reason: parsed.data.reason,
       },
     });
+
+    void notifyRefundCreated(refund.id);
+
     revalidatePath("/admin/refunds");
     return { success: true };
   } catch (err) {
@@ -58,6 +63,77 @@ export async function createRefundAction(formData: FormData) {
   }
 }
 
+async function notifyRefundCreated(refundId: string) {
+  const refund = await prisma.refund.findUnique({
+    where: { id: refundId },
+    include: {
+      booking: {
+        include: {
+          user: { select: { email: true, name: true } },
+          trip: { select: { title: true } },
+        },
+      },
+    },
+  });
+  if (!refund) return;
+  await emailService.send({
+    to: refund.booking.user.email,
+    idempotencyKey: `refund_created-${refund.id}`,
+    template: {
+      template: "refund_created",
+      data: {
+        userName: refund.booking.user.name,
+        tripTitle: refund.booking.trip.title,
+        amount: refund.amount,
+        reason: refund.reason,
+      },
+    },
+  });
+}
+
+async function notifyRefundDecision(
+  refundId: string,
+  decision: "SUCCEEDED" | "FAILED",
+  adminNote: string
+) {
+  const refund = await prisma.refund.findUnique({
+    where: { id: refundId },
+    include: {
+      booking: {
+        include: {
+          user: { select: { email: true, name: true } },
+          trip: { select: { title: true } },
+        },
+      },
+    },
+  });
+  if (!refund) return;
+  await emailService.send({
+    to: refund.booking.user.email,
+    idempotencyKey: `refund_${decision.toLowerCase()}-${refund.id}`,
+    template:
+      decision === "SUCCEEDED"
+        ? {
+            template: "refund_succeeded",
+            data: {
+              userName: refund.booking.user.name,
+              tripTitle: refund.booking.trip.title,
+              amount: refund.amount,
+              adminNote,
+            },
+          }
+        : {
+            template: "refund_failed",
+            data: {
+              userName: refund.booking.user.name,
+              tripTitle: refund.booking.trip.title,
+              amount: refund.amount,
+              adminNote,
+            },
+          },
+  });
+}
+
 export async function decideRefundAction(formData: FormData) {
   const admin = await requireAdmin();
   if (!admin) return { error: "Tidak memiliki akses admin" };
@@ -110,6 +186,13 @@ export async function decideRefundAction(formData: FormData) {
       entityId: refundId,
       payload: adminNote ? { adminNote } : undefined,
     });
+
+    // Notif email user kalau decision final (SUCCEEDED/FAILED) — APPROVE/REJECT
+    // intermediate, refund_created sudah dikirim sebelumnya.
+    if (decision === "SUCCEEDED" || decision === "FAILED") {
+      void notifyRefundDecision(refundId, decision, adminNote ?? "");
+    }
+
     revalidatePath("/admin/refunds");
     return { success: true };
   } catch (err) {