feat(MED-100): update montonio redirect

app/home/(user)/_components/cart/index.tsx

@@ -1,5 +1,7 @@
 "use client";
 
+import { useState } from "react";
+import { Loader2 } from "lucide-react";
 import { StoreCart, StoreCartLineItem } from "@medusajs/types"
 import CartItems from "./cart-items"
 import { Trans } from '@kit/ui/trans';
@@ -10,7 +12,6 @@ import {
   CardHeader,
 } from '@kit/ui/card';
 import DiscountCode from "./discount-code";
-import { useRouter } from "next/navigation";
 import { initiatePaymentSession } from "@lib/data/cart";
 import { formatCurrency } from "@/packages/shared/src/utils";
 import { useTranslation } from "react-i18next";
@@ -27,9 +28,10 @@ export default function Cart({
   analysisPackages: StoreCartLineItem[];
   otherItems: StoreCartLineItem[];
 }) {
-  const router = useRouter();
   const { i18n: { language } } = useTranslation();
 
+  const [isInitiatingSession, setIsInitiatingSession] = useState(false);
+
   const items = cart?.items ?? [];
 
   if (!cart || items.length === 0) {
@@ -49,13 +51,18 @@ export default function Cart({
     );
   }
 
-  async function handlePayment() {
+  async function initiatePayment() {
+    setIsInitiatingSession(true);
     const response = await initiatePaymentSession(cart!, {
-      provider_id: 'pp_system_default',
+      provider_id: 'pp_montonio_montonio',
     });
     if (response.payment_collection) {
-      const url = await handleNavigateToPayment({ language });
-      router.push(url);
+      const { payment_sessions } = response.payment_collection;
+      const paymentSessionId = payment_sessions![0]!.id;
+      const url = await handleNavigateToPayment({ language, paymentSessionId });
+      window.location.href = url;
+    } else {
+      setIsInitiatingSession(false);
     }
   }
 
@@ -102,7 +109,8 @@ export default function Cart({
       </div>
 
       <div>
-        <Button className="h-10" onClick={handlePayment}>
+        <Button className="h-10" onClick={initiatePayment} disabled={isInitiatingSession}>
+          {isInitiatingSession && <Loader2 className="w-4 h-4 mr-2 animate-spin" />}
           <Trans i18nKey="cart:checkout.goToCheckout" />
         </Button>
       </div>