feat(tip): add coffee tipping page

src/lib/payment/__tests__/pending_payment_order.test.ts

@@ -12,4 +12,13 @@ describe("pending payment order helpers", () => {
       }),
     ).toBe("/subscription?type=topup&payChannel=ezpay&paymentReturn=1&returnTo=chat");
   });
+
+  it("routes tip payments back to the tip page", () => {
+    expect(
+      buildPendingPaymentSubscriptionUrl({
+        payChannel: "ezpay",
+        subscriptionType: "tip",
+      }),
+    ).toBe("/tip?payChannel=ezpay&paymentReturn=1");
+  });
 });

src/lib/payment/pending_payment_order.ts

@@ -48,6 +48,14 @@ export function buildPendingPaymentSubscriptionUrl(
     "payChannel" | "returnTo" | "subscriptionType"
   >,
 ): string {
+  if (order.subscriptionType === "tip") {
+    const params = new URLSearchParams({
+      payChannel: order.payChannel,
+      paymentReturn: "1",
+    });
+    return `${ROUTES.tip}?${params.toString()}`;
+  }
+
   const params = new URLSearchParams({
     type: order.subscriptionType,
     payChannel: order.payChannel,