phase 7 blockers

server/src/Infrastructure/Baya.Infrastructure.CrossCutting/Seams/MockPaymentProvider.cs

@@ -1,23 +1,28 @@
 #nullable enable
+using System.Net;
 using Baya.Application.Contracts.Payments;
 
 namespace Baya.Infrastructure.CrossCutting.Seams;
 
 /// <summary>
 /// Deterministic mock <see cref="IPaymentProvider"/> — no external call. <see cref="InitPaymentAsync"/> returns
-/// a stable fake reference derived from the request + idempotency key and a fake redirect URL;
-/// <see cref="VerifyAsync"/> instantly succeeds and echoes the expected amount (the server-side re-check always
-/// passes in the mock); <see cref="RefundAsync"/> always succeeds (so b11 can call it). A real
-/// ZarinPal/Sadad/Vandar/Jibit adapter (acquirer-with-تسهیم, Shaparak reference, sandbox flag from the
-/// gateway's encrypted config) replaces this registration only — no mock behaviour is baked into a handler.
+/// a stable fake reference derived from the request + idempotency key, and an app-relative <c>redirectUrl</c>
+/// pointing at the client's mock-gateway harness (<c>bookings/checkout/gateway</c>, `ROUTES.CHECKOUT_GATEWAY`) —
+/// the client's `initiatePayment` success handler already branches on an absolute vs. relative URL, so this
+/// harness round-trips without a real PSP; <see cref="VerifyAsync"/> instantly succeeds and echoes the expected
+/// amount (the server-side re-check always passes in the mock); <see cref="RefundAsync"/> always succeeds (so
+/// b11 can call it). A real ZarinPal/Sadad/Vandar/Jibit adapter (acquirer-with-تسهیم, Shaparak reference,
+/// sandbox flag from the gateway's encrypted config) replaces this registration only — no mock behaviour is
+/// baked into a handler.
 /// </summary>
 public sealed class MockPaymentProvider : IPaymentProvider
 {
     public ValueTask<PaymentInitResult> InitPaymentAsync(long bookingRequestId, long amountIrr, string idempotencyKey, CancellationToken cancellationToken = default)
     {
         var reference = $"mock-ref-{bookingRequestId}-{idempotencyKey}";
+        var redirectUrl = $"/bookings/checkout/gateway?request_id={bookingRequestId}&transaction_id={WebUtility.UrlEncode(reference)}";
         return ValueTask.FromResult(new PaymentInitResult(
-            RedirectUrl: $"https://mock-psp.local/pay/{reference}",
+            RedirectUrl: redirectUrl,
             GatewayReferenceCode: reference));
     }