feat: google alternative billing

android/src/play/java/com/dooboolab/rniap/RNIapModule.kt

@@ -16,6 +16,8 @@ import com.android.billingclient.api.PurchasesUpdatedListener
 import com.android.billingclient.api.QueryProductDetailsParams
 import com.android.billingclient.api.QueryPurchaseHistoryParams
 import com.android.billingclient.api.QueryPurchasesParams
+import com.android.billingclient.api.UserChoiceBillingListener
+import com.android.billingclient.api.UserChoiceDetails
 import com.facebook.react.bridge.Arguments
 import com.facebook.react.bridge.LifecycleEventListener
 import com.facebook.react.bridge.Promise
@@ -41,7 +43,8 @@ class RNIapModule(
     private val builder: BillingClient.Builder = BillingClient.newBuilder(reactContext).enablePendingPurchases(),
     private val googleApiAvailability: GoogleApiAvailability = GoogleApiAvailability.getInstance(),
 ) : ReactContextBaseJavaModule(reactContext),
-    PurchasesUpdatedListener {
+    PurchasesUpdatedListener,
+    UserChoiceBillingListener {
     private var billingClientCache: BillingClient? = null
     private val skus: MutableMap<String, ProductDetails> = mutableMapOf()
 
@@ -145,7 +148,7 @@ class RNIapModule(
             promise.safeResolve(true)
             return
         }
-        builder.setListener(this).build().also {
+        builder.setListener(this).enableUserChoiceBilling(this).build().also {
             billingClientCache = it
             it.startConnection(
                 object : BillingClientStateListener {
@@ -450,6 +453,7 @@ class RNIapModule(
         type: String,
         skuArr: ReadableArray,
         purchaseToken: String?,
+        externalTransactionID: String?,
         replacementMode: Int,
         obfuscatedAccountId: String?,
         obfuscatedProfileId: String?,
@@ -508,6 +512,9 @@ class RNIapModule(
             builder.setProductDetailsParamsList(productParamsList).setIsOfferPersonalized(isOfferPersonalized)
 
             val subscriptionUpdateParamsBuilder = SubscriptionUpdateParams.newBuilder()
+            if (externalTransactionID != null) {
+                subscriptionUpdateParamsBuilder.setOriginalExternalTransactionId(externalTransactionID)
+            }
             if (purchaseToken != null) {
                 subscriptionUpdateParamsBuilder.setOldPurchaseToken(purchaseToken)
 
@@ -719,6 +726,7 @@ class RNIapModule(
 
     companion object {
         private const val PROMISE_BUY_ITEM = "PROMISE_BUY_ITEM"
+        private const val USER_ALTER_ITEM = "USER_ALTER_ITEM"
         const val TAG = "RNIapModule"
     }
 
@@ -736,4 +744,14 @@ class RNIapModule(
             }
         reactContext.addLifecycleEventListener(lifecycleEventListener)
     }
+
+    override fun userSelectedAlternativeBilling(userChoiceDetails: UserChoiceDetails) {
+        val products = userChoiceDetails.products
+        val externalToken = userChoiceDetails.externalTransactionToken
+        val result = Arguments.createMap()
+        result.putString("products", userChoiceDetails.products.toString())
+        result.putString("externalTransactionToken", userChoiceDetails.externalTransactionToken)
+        sendEvent(reactContext, "user-alternative-billing", result)
+        PromiseUtils.resolvePromisesForKey(USER_ALTER_ITEM, null)
+    }
 }

src/eventEmitter.ts

@@ -65,6 +65,27 @@ export const purchaseUpdatedListener = (
   return emitterSubscription;
 };
 
+export const userChoiceBillingUpdateListenerAndroid = (
+  listener: (event: Purchase) => void,
+) => {
+  const eventEmitter = new NativeEventEmitter(getNativeModule());
+  const proxyListener = isIosStorekit2()
+    ? (event: Purchase) => {
+        listener(transactionSk2ToPurchaseMap(event as any));
+      }
+    : listener;
+  const emitterUserChoiceBilling = eventEmitter.addListener(
+    'user-alternative-billing',
+    proxyListener,
+  );
+
+  if (isAndroid) {
+    getAndroidModule().startListening();
+  }
+
+  return emitterUserChoiceBilling;
+};
+
 /**
  * Add IAP purchase error event
  * Register a callback that gets called when there has been an error with a purchase. Returns a React Native `EmitterSubscription` on which you can call `.remove()` to stop receiving updates.

src/hooks/withIAPContext.tsx

@@ -4,6 +4,7 @@ import {
   promotedProductListener,
   purchaseErrorListener,
   purchaseUpdatedListener,
+  userChoiceBillingUpdateListenerAndroid,
   transactionListener,
 } from '../eventEmitter';
 import {IapIos, initConnection} from '../iap';
@@ -71,6 +72,9 @@ export function withIAPContext<T>(Component: React.ComponentType<T>) {
 
     const [currentPurchaseError, setCurrentPurchaseError] =
       useState<PurchaseError>();
+      const [alternativePurchase, setAlternativePurchase] = useState<Purchase>();
+    const [alternativePurchaseError, setAlternativePurchaseError] =
+      useState<PurchaseError>();
 
     const [initConnectionError, setInitConnectionError] = useState<Error>();
 
@@ -85,13 +89,17 @@ export function withIAPContext<T>(Component: React.ComponentType<T>) {
         currentPurchase,
         currentTransaction,
         currentPurchaseError,
+        alternativePurchase,
+        alternativePurchaseError,
         initConnectionError,
         setProducts,
         setSubscriptions,
         setPurchaseHistory,
         setAvailablePurchases,
         setCurrentPurchase,
         setCurrentPurchaseError,
+        setAlternativePurchase,
+        setAlternativePurchaseError,
       }),
       [
         connected,
@@ -103,13 +111,17 @@ export function withIAPContext<T>(Component: React.ComponentType<T>) {
         currentPurchase,
         currentTransaction,
         currentPurchaseError,
+        alternativePurchase,
+        alternativePurchaseError,
         initConnectionError,
         setProducts,
         setSubscriptions,
         setPurchaseHistory,
         setAvailablePurchases,
         setCurrentPurchase,
         setCurrentPurchaseError,
+        setAlternativePurchase,
+        setAlternativePurchaseError,
       ],
     );
 
@@ -134,6 +146,13 @@ export function withIAPContext<T>(Component: React.ComponentType<T>) {
         },
       );
 
+      const userChoiceBillingUpdateSubscription = userChoiceBillingUpdateListenerAndroid(
+        async (purchase: ProductPurchase | SubscriptionPurchase) => {
+          setAlternativePurchaseError(undefined);
+          setAlternativePurchase(purchase);
+        },
+      );
+
       const transactionUpdateSubscription = transactionListener(
         async (transactionOrError: TransactionEvent) => {
           setCurrentPurchaseError(transactionOrError?.error);
@@ -162,6 +181,7 @@ export function withIAPContext<T>(Component: React.ComponentType<T>) {
         purchaseErrorSubscription.remove();
         promotedProductSubscription?.remove();
         transactionUpdateSubscription?.remove();
+        userChoiceBillingUpdateSubscription?.remove();
       };
     }, [connected]);
 

src/iap.ts

@@ -642,6 +642,7 @@ export const requestPurchase = (
             ANDROID_ITEM_TYPE_IAP,
             skus,
             undefined,
+            undefined,
             -1,
             obfuscatedAccountIdAndroid,
             obfuscatedProfileIdAndroid,
@@ -797,6 +798,7 @@ export const requestSubscription = (
           const {
             subscriptionOffers,
             purchaseTokenAndroid,
+            externalTransactionIdAndroid,
             replacementModeAndroid = -1,
             obfuscatedAccountIdAndroid,
             obfuscatedProfileIdAndroid,
@@ -807,6 +809,7 @@ export const requestSubscription = (
             ANDROID_ITEM_TYPE_SUBSCRIPTION,
             subscriptionOffers?.map((so) => so.sku),
             purchaseTokenAndroid,
+            externalTransactionIdAndroid,
             replacementModeAndroid,
             obfuscatedAccountIdAndroid,
             obfuscatedProfileIdAndroid,

src/modules/android.ts

@@ -39,6 +39,7 @@ export type BuyItemByType = (
   type: string,
   skus: Sku[],
   purchaseToken: string | undefined,
+  externalTransactionIdAndroid: string | undefined,
   replacementModeAndroid: ReplacementModesAndroid | -1,
   obfuscatedAccountId: string | undefined,
   obfuscatedProfileId: string | undefined,

src/types/index.ts

@@ -92,6 +92,8 @@ export interface ProductPurchase {
   userMarketplaceAmazon?: string;
   userJsonAmazon?: string;
   isCanceledAmazon?: boolean;
+  //UserChoiceBilling
+  externalTransactionTokenAndroid?: string;
 }
 
 export interface PurchaseResult {
@@ -254,6 +256,7 @@ export interface SubscriptionOffer {
 
 export interface RequestSubscriptionAndroid extends RequestPurchaseBaseAndroid {
   purchaseTokenAndroid?: string;
+  externalTransactionIdAndroid?: string;
   replacementModeAndroid?: ReplacementModesAndroid;
   subscriptionOffers: SubscriptionOffer[];
 }