fix(iap): acknowledge Google Play purchases only after the entitlement is persisted

server/supabase/functions/_shared/google-play.ts

@@ -416,3 +416,24 @@ export async function verifyGooglePlaySubscription(
     ownsExpiredPurchaseToken,
   )
 }
+
+/**
+ * Google Play Developer API adapter for the purchase-application use case
+ * (structurally satisfies GooglePlayPurchaseApi in google-play-apply.ts).
+ */
+export function createGooglePlayPurchaseApi(fetchImpl: typeof fetch = fetch): {
+  verify(
+    userId: string,
+    productId: string,
+    purchaseToken: string,
+    ownsExpiredPurchaseToken: (expiredPurchaseToken: string) => Promise<boolean>,
+  ): Promise<NormalizedGooglePlayPurchase>
+  acknowledge(productId: string, purchaseToken: string): Promise<void>
+} {
+  return {
+    verify: (userId, productId, purchaseToken, ownsExpiredPurchaseToken) =>
+      verifyGooglePlaySubscription(userId, productId, purchaseToken, fetchImpl, ownsExpiredPurchaseToken),
+    acknowledge: (productId, purchaseToken) =>
+      acknowledgeGooglePlaySubscription(productId, purchaseToken, fetchImpl),
+  }
+}