refund roadmap pr-1 and pr-2

app/trips/[id]/page.tsx

@@ -6,17 +6,21 @@ import Image from "next/image";
 import { authOptions } from "@/lib/auth";
 import { tripService } from "@/server/services/trip.service";
 import { bookingService } from "@/server/services/booking.service";
+import { bookingRepo } from "@/server/repositories/booking.repo";
 import { trustService } from "@/server/services/trust.service";
 import { formatRupiah } from "@/lib/utils";
 import { formatTripCalendarDateRangeLong } from "@/lib/trip-dates";
 import { siteConfig, siteUrl, absoluteUrl } from "@/lib/site";
 import { JoinTripButton } from "@/features/trip/components/join-trip-button";
+import { CancelTripButton } from "@/features/trip/components/cancel-trip-button";
+import { CancelBookingButton } from "@/features/booking/components/cancel-booking-button";
 import { OrganizerJoinRequests } from "@/features/trip/components/organizer-join-requests";
 import { OrganizerTrustPanel } from "@/features/trip/components/organizer-trust-panel";
 import { TripProgramBlock } from "@/features/trip/components/trip-program-block";
 import { OrganizerPaymentQueue } from "@/features/booking/components/organizer-payment-queue";
 import { ImageGallery } from "@/features/trip/components/image-gallery";
 import { TripReviewSection } from "@/features/review/components/trip-review-section";
+import { RefundPolicySection } from "@/features/refund/components/refund-policy-section";
 import { categoryMeta } from "@/lib/activity-category";
 import { vibeMeta } from "@/lib/vibe";
 import { isFreeTrip } from "@/lib/trip-pricing";
@@ -24,6 +28,7 @@ import {
   isPastTripLastDayForReview,
   isTripDepartureDayPast,
 } from "@/lib/trip-dates";
+import { previewRefund } from "@/lib/refund-policy";
 
 export async function generateMetadata({
   params,
@@ -137,6 +142,31 @@ export default async function TripDetailPage({
       ? await bookingService.getAwaitingManualForTrip(trip.id)
       : [];
 
+  // Booking peserta saat ini — dipakai untuk render CancelBookingButton vs
+  // tombol "Batal Ikut" biasa. Hanya untuk non-organizer yang ikut trip.
+  const myBooking =
+    session?.user && !isOrganizer && currentParticipation
+      ? await bookingService.getByTripAndUser(trip.id, session.user.id)
+      : null;
+
+  // Untuk CancelTripButton: jumlah booking PAID/PARTIALLY_REFUNDED (yang akan
+  // auto-refund). Hanya dihitung saat organizer mengakses trip yang masih
+  // bisa dibatalkan.
+  const canOrganizerCancel =
+    isOrganizer &&
+    (trip.status === "OPEN" || trip.status === "FULL") &&
+    !isDeparturePast;
+  const paidBookingCount = canOrganizerCancel
+    ? await bookingRepo.countSettledForTrip(trip.id)
+    : 0;
+
+  // Preview refund untuk CancelBookingButton (server-side supaya konsisten
+  // dengan service yang juga pakai policy yang sama).
+  const refundPreview =
+    myBooking && myBooking.status === "PAID" && !isDeparturePast
+      ? previewRefund(myBooking.amount, trip.date)
+      : null;
+
   const catMeta = categoryMeta(trip.category);
 
   const tripUrl = absoluteUrl(`/trips/${trip.id}`);
@@ -480,8 +510,33 @@ export default async function TripDetailPage({
             isFull={spotsLeft <= 0}
             tripStatus={trip.status}
             isDeparturePast={isDeparturePast}
+            hideCancelButton={!!refundPreview}
           />
 
+          {/* Peserta PAID: cancel + request refund (lewat policy default). */}
+          {refundPreview && (
+            <CancelBookingButton
+              tripId={trip.id}
+              preview={{
+                days: refundPreview.days,
+                refundAmount: refundPreview.refundAmount,
+                bookingAmount: refundPreview.bookingAmount,
+                tierLabel: refundPreview.tier.label,
+              }}
+            />
+          )}
+
+          {/* Organizer: batalkan trip (auto-refund peserta PAID). */}
+          {canOrganizerCancel && (
+            <CancelTripButton
+              tripId={trip.id}
+              paidParticipantCount={paidBookingCount}
+            />
+          )}
+
+          {/* Kebijakan refund — transparency sebelum user cancel. */}
+          {!tripIsFree && <RefundPolicySection />}
+
           <TripReviewSection
             tripId={trip.id}
             reviews={trip.reviews.map((r) => ({