feat(thank-you): make extension APP_URL shop-aware (dev shop -> dev backend)

extensions/invoice-thank-you-payment/src/Checkout.tsx

@@ -2,7 +2,16 @@ import "@shopify/ui-extensions/preact";
 import { render } from "preact";
 import { useEffect, useState } from "preact/hooks";
 
-const APP_URL = "https://invoice-app.linumiq.com";
+const APP_URL_PROD = "https://invoice-app.linumiq.com";
+const APP_URL_DEV = "https://invoice-app-dev.linumiq.com";
+const DEV_SHOPS = new Set(["linumiq-dev.myshopify.com"]);
+
+function resolveAppUrl(shopify: any): string {
+  const shop: string | undefined =
+    shopify?.shop?.myshopifyDomain ?? shopify?.shop?.value?.myshopifyDomain;
+  if (shop && DEV_SHOPS.has(shop)) return APP_URL_DEV;
+  return APP_URL_PROD;
+}
 
 interface PaymentInstructions {
   language: "de" | "en";
@@ -45,8 +54,9 @@ function Extension() {
           return;
         }
         const token: string = await shopify.sessionToken.get();
+        const appUrl = resolveAppUrl(shopify);
         const res = await fetch(
-          `${APP_URL}/api/public/payment-info?orderId=${encodeURIComponent(orderId)}`,
+          `${appUrl}/api/public/payment-info?orderId=${encodeURIComponent(orderId)}`,
           { headers: { Authorization: `Bearer ${token}` } },
         );
         if (!res.ok) {