From f7de5c3fb4f9e7e77c81c966bbf8ffedfd668385 Mon Sep 17 00:00:00 2001
From: Kamo Spertsyan <spertsiankamo@gmail.com>
Date: Fri, 22 Nov 2024 11:52:26 +0300
Subject: [PATCH 1/2] Promo offers implementation for iOS.

---
 QonversionCapacitorPlugin.podspec             |  2 +-
 android/build.gradle                          |  2 +-
 example/ios/App/Podfile.lock                  | 20 +++++------
 example/src/index.html                        |  5 +++
 example/src/js/index.js                       | 28 +++++++++++++++
 .../QonversionPlugin/QonversionPlugin.swift   | 15 ++++++--
 src/QonversionApi.ts                          | 15 ++++++++
 src/QonversionNativePlugin.ts                 |  7 +++-
 src/dto/PromotionalOffer.ts                   | 15 ++++++++
 src/dto/PurchaseOptions.ts                    |  6 +++-
 src/dto/PurchaseOptionsBuilder.ts             | 23 ++++++++++++-
 src/dto/Transaction.ts                        |  3 ++
 src/dto/storeProducts/SKPaymentDiscount.ts    | 21 ++++++++++++
 src/index.ts                                  |  2 ++
 src/internal/Mapper.ts                        | 34 +++++++++++++++++++
 src/internal/QonversionInternal.ts            | 27 ++++++++++++++-
 src/internal/web.ts                           |  6 +++-
 17 files changed, 212 insertions(+), 19 deletions(-)
 create mode 100644 src/dto/PromotionalOffer.ts
 create mode 100644 src/dto/storeProducts/SKPaymentDiscount.ts

diff --git a/QonversionCapacitorPlugin.podspec b/QonversionCapacitorPlugin.podspec
index d6f4091..69c19a3 100644
--- a/QonversionCapacitorPlugin.podspec
+++ b/QonversionCapacitorPlugin.podspec
@@ -14,5 +14,5 @@ Pod::Spec.new do |s|
   s.ios.deployment_target  = '13.0'
   s.dependency 'Capacitor'
   s.swift_version = '5.1'
-  s.dependency "QonversionSandwich", "5.1.6"
+  s.dependency "QonversionSandwich", "5.2.0"
 end
diff --git a/android/build.gradle b/android/build.gradle
index 3e16529..95a06cf 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -61,7 +61,7 @@ dependencies {
     implementation project(':capacitor-android')
     implementation "androidx.appcompat:appcompat:$androidxAppCompatVersion"
     implementation 'androidx.core:core-ktx:1.13.1'
-    implementation "io.qonversion.sandwich:sandwich:5.1.6"
+    implementation "io.qonversion.sandwich:sandwich:5.2.0"
     testImplementation "junit:junit:$junitVersion"
     androidTestImplementation "androidx.test.ext:junit:$androidxJunitVersion"
     androidTestImplementation "androidx.test.espresso:espresso-core:$androidxEspressoCoreVersion"
diff --git a/example/ios/App/Podfile.lock b/example/ios/App/Podfile.lock
index 364abc4..7d80951 100644
--- a/example/ios/App/Podfile.lock
+++ b/example/ios/App/Podfile.lock
@@ -6,14 +6,14 @@ PODS:
   - CapacitorCordova (6.1.2)
   - CapacitorSplashScreen (6.0.2):
     - Capacitor
-  - Qonversion (5.12.4):
-    - Qonversion/Main (= 5.12.4)
-  - Qonversion/Main (5.12.4)
-  - QonversionCapacitorPlugin (0.1.1):
+  - Qonversion (5.13.0):
+    - Qonversion/Main (= 5.13.0)
+  - Qonversion/Main (5.13.0)
+  - QonversionCapacitorPlugin (0.1.3):
     - Capacitor
-    - QonversionSandwich (= 5.1.6)
-  - QonversionSandwich (5.1.6):
-    - Qonversion (= 5.12.4)
+    - QonversionSandwich (= 5.2.0)
+  - QonversionSandwich (5.2.0):
+    - Qonversion (= 5.13.0)
 
 DEPENDENCIES:
   - "Capacitor (from `../../node_modules/@capacitor/ios`)"
@@ -44,9 +44,9 @@ SPEC CHECKSUMS:
   CapacitorCamera: ed022171dbf3853e68eec877b4d78995378af6b7
   CapacitorCordova: f48c89f96c319101cd2f0ce8a2b7449b5fb8b3dd
   CapacitorSplashScreen: 250df9ef8014fac5c7c1fd231f0f8b1d8f0b5624
-  Qonversion: cca480020597aa8bb74d9c5d0bf1916e68b8440e
-  QonversionCapacitorPlugin: e1ef7bcf16b785b6edbe6c2f35a323fcb4bb07b4
-  QonversionSandwich: 5ed2ecfc84e4af49e49ddb1250ccf00dc9a7c0a5
+  Qonversion: 37addeba74c5b328de9e1173b580c971b6d764ec
+  QonversionCapacitorPlugin: 96d479bb23452fd216f8119d8375fc41e31822e2
+  QonversionSandwich: 3ffa118b7214ebd2dcd3f3a1a0a33a39f9c48c8e
 
 PODFILE CHECKSUM: 238528980101a97d01a6a29581a5e0d56d489a11
 
diff --git a/example/src/index.html b/example/src/index.html
index ced23e5..ad8e9bc 100644
--- a/example/src/index.html
+++ b/example/src/index.html
@@ -21,6 +21,11 @@ <h1>Qonversion Capacitor Sample Project</h1>
           <button onclick="purchase()" type="button" class="qon-button">Purchase</button>
         </div>
         <button onclick="getProducts()" type="button" class="qon-button top-margin">Get Products</button>
+        <div class="row top-margin">
+          <input placeholder="Product id" id="product-id-promo" type="text" class="qon-input" name="product-id" />
+          <input placeholder="Discount id" id="discount-id-promo" type="text" class="qon-input" name="discount-id" />
+          <button onclick="getPromoOffer()" type="button" class="qon-button">Get Promo Offer</button>
+        </div>
         <div class="row top-margin">
           <input placeholder="context key" id="context-key" type="text" class="qon-input" name="context-key" />
           <button onclick="getRemoteConfig()" type="button" class="qon-button">Get Remote Config</button>
diff --git a/example/src/js/index.js b/example/src/js/index.js
index e6041aa..308653f 100644
--- a/example/src/js/index.js
+++ b/example/src/js/index.js
@@ -44,6 +44,34 @@ window.getProducts = async () => {
   console.log('Qonversion products:', products);
 }
 
+window.getPromoOffer = async () => {
+  const productId = document.getElementById('product-id-promo').value;
+  const discountId = document.getElementById('discount-id-promo').value;
+  const products = await Qonversion.getSharedInstance().products();
+
+  const product = products.get(productId);
+  if (!product) {
+    console.log('Qonversion product not found: ', productId);
+    return;
+  }
+
+  const discount = product.skProduct.discounts.find(discount => discount.identifier === discountId);
+  if (!discount) {
+    console.log('Qonversion discount not found for requested product: ', discountId);
+    return;
+  }
+
+  try {
+    const promoOffer = await Qonversion.getSharedInstance().getPromotionalOffer(product, discount);
+    console.log('Qonversion getPromotionalOffer:', promoOffer);
+
+    const entitlements = await Qonversion.getSharedInstance().purchaseProduct(product, new PurchaseOptionsBuilder().setPromotionalOffer(promoOffer).build());
+    console.log('Entitlements: ', entitlements);
+  } catch (e) {
+    console.log('Qonversion getPromotionalOffer failed', e);
+  }
+}
+
 window.getRemoteConfig = async () => {
   const contextKey = document.getElementById('context-key').value;
   const key = contextKey?.length > 0 ? contextKey : undefined;
diff --git a/ios/Sources/QonversionPlugin/QonversionPlugin.swift b/ios/Sources/QonversionPlugin/QonversionPlugin.swift
index 8bd49c6..6f19549 100644
--- a/ios/Sources/QonversionPlugin/QonversionPlugin.swift
+++ b/ios/Sources/QonversionPlugin/QonversionPlugin.swift
@@ -11,6 +11,7 @@ public class QonversionPlugin: CAPPlugin, CAPBridgedPlugin {
     CAPPluginMethod(name: "identify", returnType: CAPPluginReturnPromise),
     CAPPluginMethod(name: "logout", returnType: CAPPluginReturnPromise),
     CAPPluginMethod(name: "products", returnType: CAPPluginReturnPromise),
+    CAPPluginMethod(name: "getPromotionalOffer", returnType: CAPPluginReturnPromise),
     CAPPluginMethod(name: "purchase", returnType: CAPPluginReturnPromise),
     CAPPluginMethod(name: "promoPurchase", returnType: CAPPluginReturnPromise),
     CAPPluginMethod(name: "checkEntitlements", returnType: CAPPluginReturnPromise),
@@ -80,14 +81,24 @@ public class QonversionPlugin: CAPPlugin, CAPBridgedPlugin {
     qonversionSandwich?.products(getDefaultCompletion(call))
   }
 
+  @objc func getPromotionalOffer(_ call: CAPPluginCall) {
+    guard let productId = call.getString("productId"),
+          let discountId = call.getString("discountId") else {
+      return call.noNecessaryDataError()
+    }
+
+    qonversionSandwich?.getPromotionalOffer(productId, productDiscountId:discountId, completion: getDefaultCompletion(call))
+  }
+
   @objc func purchase(_ call: CAPPluginCall) {
     guard let productId = call.getString("productId") else {
       return call.noNecessaryDataError()
     }
     let quantity = call.getInt("quantity") ?? 1
-      let contextKeys = call.getArray("contextKeys")?.capacitor.replacingNullValues().compactMap({$0}) as? [String] ?? []
+    let contextKeys = call.getArray("contextKeys")?.capacitor.replacingNullValues().compactMap({$0}) as? [String] ?? []
+    let promoOffer = call.getObject("promoOffer") ?? [:]
 
-    qonversionSandwich?.purchase(productId, quantity:quantity, contextKeys:contextKeys, completion: getDefaultCompletion(call))
+    qonversionSandwich?.purchase(productId, quantity:quantity, contextKeys:contextKeys, promoOffer:promoOffer, completion: getDefaultCompletion(call))
   }
 
   @objc func promoPurchase(_ call: CAPPluginCall) {
diff --git a/src/QonversionApi.ts b/src/QonversionApi.ts
index 392ec70..7247320 100644
--- a/src/QonversionApi.ts
+++ b/src/QonversionApi.ts
@@ -10,6 +10,8 @@ import {AttributionProvider, UserPropertyKey} from './dto/enums';
 import {UserProperties} from './dto/UserProperties';
 import {EntitlementsUpdateListener} from './dto/EntitlementsUpdateListener';
 import {PromoPurchasesListener} from './dto/PromoPurchasesListener';
+import {SKProductDiscount} from './dto/storeProducts/SKProductDiscount';
+import {PromotionalOffer} from './dto/PromotionalOffer';
 
 export interface QonversionApi {
   /**
@@ -24,6 +26,19 @@ export interface QonversionApi {
    */
   syncStoreKit2Purchases(): void;
 
+  /**
+   * iOS only.
+   * Retrieve the promotional offer for the product if it exists.
+   * Make sure to call this function before displaying product details to the user.
+   * The generated signature for the promotional offer is valid for a single transaction.
+   * If the purchase fails, you need to call this function again to obtain a new promotional offer signature.
+   * Use this signature to complete the purchase through the purchase function, along with the purchase options object.
+   * @param product - product you want to purchase.
+   * @param discount - discount to create promotional offer signature.
+   * @returns the promise with the PromotionalOffer.
+   */
+  getPromotionalOffer(product: Product, discount: SKProductDiscount): Promise<PromotionalOffer | null>;
+
   /**
    * Make a purchase and validate it through server-to-server using Qonversion's Backend
    * @param product product to purchase
diff --git a/src/QonversionNativePlugin.ts b/src/QonversionNativePlugin.ts
index 9321a2e..d386959 100644
--- a/src/QonversionNativePlugin.ts
+++ b/src/QonversionNativePlugin.ts
@@ -2,10 +2,12 @@ import {
   QEntitlement,
   QOfferings,
   QProduct,
+  QPromotionalOffer,
   QRemoteConfig,
   QRemoteConfigList,
   QTrialIntroEligibility,
-  QUser, QUserProperties
+  QUser,
+  QUserProperties
 } from './internal/Mapper';
 
 export interface QonversionNativePlugin {
@@ -26,6 +28,8 @@ export interface QonversionNativePlugin {
 
   storeSdkInfo(params: {source: string, version: string}): void;
 
+  getPromotionalOffer(params: {productId: string, discountId: string | undefined}): Promise<QPromotionalOffer>;
+
   purchase(params: {
     productId: string,
     quantity?: number,
@@ -34,6 +38,7 @@ export interface QonversionNativePlugin {
     applyOffer?: boolean | undefined,
     oldProductId?: string | undefined,
     updatePolicyKey?: string | null | undefined,
+    promoOffer?: Object | null,
   }): Promise<Record<string, QEntitlement> | null | undefined>;
 
   products(): Promise<Record<string, QProduct> | null | undefined>;
diff --git a/src/dto/PromotionalOffer.ts b/src/dto/PromotionalOffer.ts
new file mode 100644
index 0000000..57d33e7
--- /dev/null
+++ b/src/dto/PromotionalOffer.ts
@@ -0,0 +1,15 @@
+import {SKProductDiscount} from './storeProducts/SKProductDiscount';
+import {SKPaymentDiscount} from './storeProducts/SKPaymentDiscount';
+
+export class PromotionalOffer {
+    public readonly productDiscount: SKProductDiscount;
+    public readonly paymentDiscount: SKPaymentDiscount;
+
+    constructor (
+        productDiscount: SKProductDiscount,
+        paymentDiscount: SKPaymentDiscount
+    ) {
+        this.productDiscount = productDiscount;
+        this.paymentDiscount = paymentDiscount;
+    }
+}
diff --git a/src/dto/PurchaseOptions.ts b/src/dto/PurchaseOptions.ts
index f1f9bd8..e033a86 100644
--- a/src/dto/PurchaseOptions.ts
+++ b/src/dto/PurchaseOptions.ts
@@ -1,5 +1,6 @@
 import {Product} from "./Product";
 import {PurchaseUpdatePolicy} from "./enums";
+import {PromotionalOffer} from './PromotionalOffer';
 
 export class PurchaseOptions {
     public readonly offerId: string | null;
@@ -8,6 +9,7 @@ export class PurchaseOptions {
     public readonly updatePolicy: PurchaseUpdatePolicy | null;
     public readonly contextKeys: string[] | null;
     public readonly quantity: number;
+    public readonly promotionalOffer: PromotionalOffer | null;
 
     constructor (
         offerId: string | null,
@@ -15,7 +17,8 @@ export class PurchaseOptions {
         oldProduct: Product | null,
         updatePolicy: PurchaseUpdatePolicy | null,
         contextKeys: string[] | null,
-        quantity: number
+        quantity: number,
+        promotionalOffer: PromotionalOffer | null
     ) {
         this.offerId = offerId;
         this.applyOffer = applyOffer;
@@ -23,5 +26,6 @@ export class PurchaseOptions {
         this.updatePolicy = updatePolicy;
         this.contextKeys = contextKeys;
         this.quantity = quantity;
+        this.promotionalOffer = promotionalOffer;
     }
 }
diff --git a/src/dto/PurchaseOptionsBuilder.ts b/src/dto/PurchaseOptionsBuilder.ts
index 54d4c94..b096405 100644
--- a/src/dto/PurchaseOptionsBuilder.ts
+++ b/src/dto/PurchaseOptionsBuilder.ts
@@ -2,6 +2,7 @@ import {Product} from './Product';
 import {PurchaseUpdatePolicy} from './enums';
 import {ProductOfferDetails} from './storeProducts/ProductOfferDetails';
 import {PurchaseOptions} from './PurchaseOptions';
+import {PromotionalOffer} from './PromotionalOffer';
 
 export class PurchaseOptionsBuilder {
     private offerId: string | null = null;
@@ -10,6 +11,7 @@ export class PurchaseOptionsBuilder {
     private updatePolicy: PurchaseUpdatePolicy | null = null;
     private contextKeys: string[] | null = null;
     private quantity: number = 1;
+    private promoOffer: PromotionalOffer | null = null;
 
     /**
      * iOS only.
@@ -95,11 +97,30 @@ export class PurchaseOptionsBuilder {
         return this;
     }
 
+    /**
+     * Set the promotional offer details.
+     *
+     * @param promoOffer promotional offer details.
+     * @return builder instance for chain calls.
+     */
+    setPromotionalOffer(promoOffer: PromotionalOffer): PurchaseOptionsBuilder {
+        this.promoOffer = promoOffer;
+        return this;
+    }
+
     /**
      * Generate {@link PurchaseOptions} instance with all the provided options.
      * @return the complete {@link PurchaseOptions} instance.
      */
     build(): PurchaseOptions {
-        return new PurchaseOptions(this.offerId, this.applyOffer, this.oldProduct, this.updatePolicy, this.contextKeys, this.quantity);
+        return new PurchaseOptions(
+          this.offerId,
+          this.applyOffer,
+          this.oldProduct,
+          this.updatePolicy,
+          this.contextKeys,
+          this.quantity,
+          this.promoOffer
+        );
     }
 }
diff --git a/src/dto/Transaction.ts b/src/dto/Transaction.ts
index f1352da..f83a8f0 100644
--- a/src/dto/Transaction.ts
+++ b/src/dto/Transaction.ts
@@ -10,6 +10,7 @@ export class Transaction {
     expirationDate?: Date;
     transactionRevocationDate?: Date;
     offerCode?: string;
+    promoOfferId?: string;
 
     constructor(
         originalTransactionId: string,
@@ -21,6 +22,7 @@ export class Transaction {
         expirationTimestamp: number | undefined,
         transactionRevocationTimestamp: number | undefined,
         offerCode: string | undefined,
+        promoOfferId: string | undefined,
     ) {
         this.originalTransactionId = originalTransactionId;
         this.transactionId = transactionId;
@@ -31,5 +33,6 @@ export class Transaction {
         this.expirationDate = expirationTimestamp ? new Date(expirationTimestamp) : undefined;
         this.transactionRevocationDate = transactionRevocationTimestamp ? new Date(transactionRevocationTimestamp) : undefined;
         this.offerCode = offerCode;
+        this.promoOfferId = promoOfferId;
     }
 }
diff --git a/src/dto/storeProducts/SKPaymentDiscount.ts b/src/dto/storeProducts/SKPaymentDiscount.ts
new file mode 100644
index 0000000..73f3238
--- /dev/null
+++ b/src/dto/storeProducts/SKPaymentDiscount.ts
@@ -0,0 +1,21 @@
+export class SKPaymentDiscount {
+    identifier: string;
+    keyIdentifier: string;
+    nonce: string;
+    signature: string;
+    timestamp: number;
+
+    constructor (
+        identifier: string,
+        keyIdentifier: string,
+        nonce: string,
+        signature: string,
+        timestamp: number,
+    ) {
+        this.identifier = identifier;
+        this.keyIdentifier = keyIdentifier;
+        this.nonce = nonce;
+        this.signature = signature;
+        this.timestamp = timestamp;
+    }
+}
diff --git a/src/index.ts b/src/index.ts
index 817eee9..361d231 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -5,6 +5,7 @@ export * from './dto/IntroEligibility';
 export * from './dto/Offering';
 export * from './dto/Offerings';
 export * from './dto/Product';
+export * from './dto/PromotionalOffer';
 export * from './dto/QonversionError';
 export * from './dto/User';
 export * from './dto/UserProperty';
@@ -28,6 +29,7 @@ export * from './dto/PurchaseOptions';
 export * from './dto/PurchaseOptionsBuilder';
 export * from './dto/EntitlementsUpdateListener';
 export * from './dto/PromoPurchasesListener';
+export * from './dto/storeProducts/SKPaymentDiscount';
 export * from './dto/storeProducts/SKProduct';
 export * from './dto/storeProducts/SKProductDiscount';
 export * from './dto/storeProducts/SKSubscriptionPeriod';
diff --git a/src/internal/Mapper.ts b/src/internal/Mapper.ts
index 94579dc..4b09c8f 100644
--- a/src/internal/Mapper.ts
+++ b/src/internal/Mapper.ts
@@ -47,6 +47,8 @@ import {ProductInAppDetails} from "../dto/storeProducts/ProductInAppDetails";
 import {ProductPrice} from "../dto/storeProducts/ProductPrice";
 import {ProductPricingPhase} from "../dto/storeProducts/ProductPricingPhase";
 import {ProductInstallmentPlanDetails} from '../dto/storeProducts/ProductInstallmentPlanDetails';
+import {PromotionalOffer} from '../dto/PromotionalOffer';
+import {SKPaymentDiscount} from '../dto/storeProducts/SKPaymentDiscount';
 
 export type QProduct = {
   id: string;
@@ -104,6 +106,11 @@ type QProductInstallmentPlanDetails = {
   subsequentCommitmentPaymentsCount: number;
 }
 
+export type QPromotionalOffer = {
+  productDiscount: QProductDiscount,
+  paymentDiscount: QPaymentDiscount,
+}
+
 type QProductOfferDetails = {
   basePlanId: string,
   offerId?: string | null,
@@ -185,6 +192,14 @@ type QProductDiscount = {
   priceLocale: QLocale;
 };
 
+type QPaymentDiscount = {
+  identifier: string;
+  keyIdentifier: string;
+  nonce: string;
+  signature: string;
+  timestamp: number;
+};
+
 type QLocale = {
   currencySymbol: string | null;
   currencyCode: string | null;
@@ -226,6 +241,7 @@ type QTransaction = {
   environment: string;
   ownershipType: string;
   type: string;
+  promoOfferId: string;
 }
 
 export type QOfferings = {
@@ -286,6 +302,19 @@ export type QUserProperties = {
 const priceMicrosRatio = 1000000;
 
 class Mapper {
+  static convertPromoOffer(
+    promoOffer: QPromotionalOffer | null | undefined
+  ): PromotionalOffer | null {
+    if (!promoOffer) {
+      return null;
+    }
+
+    const productDiscount = this.convertProductDiscount(promoOffer.productDiscount);
+    const paymentDiscount = this.convertPaymentDiscount(promoOffer.paymentDiscount);
+
+    return new PromotionalOffer(productDiscount, paymentDiscount);
+  }
+
   static convertEntitlements(
     entitlements: Record<string, QEntitlement> | null | undefined
   ): Map<string, Entitlement> {
@@ -364,6 +393,7 @@ class Mapper {
         transaction.expirationTimestamp,
         transaction.transactionRevocationTimestamp,
         transaction.offerCode,
+        transaction.promoOfferId,
     );
   }
 
@@ -907,6 +937,10 @@ class Mapper {
     );
   }
 
+  static convertPaymentDiscount(discount: QPaymentDiscount): SKPaymentDiscount {
+    return new SKPaymentDiscount(discount.identifier, discount.keyIdentifier, discount.nonce, discount.signature, discount.timestamp)
+  }
+
   static convertProductDiscount(discount: QProductDiscount): SKProductDiscount {
     let subscriptionPeriod: SKSubscriptionPeriod | undefined = undefined;
     if (discount.subscriptionPeriod != null) {
diff --git a/src/internal/QonversionInternal.ts b/src/internal/QonversionInternal.ts
index 9483d48..4497205 100644
--- a/src/internal/QonversionInternal.ts
+++ b/src/internal/QonversionInternal.ts
@@ -17,6 +17,8 @@ import {RemoteConfigList} from '../dto/RemoteConfigList';
 import {QonversionApi} from '../QonversionApi';
 import {QonversionNativePlugin} from '../QonversionNativePlugin';
 import {PurchaseOptionsBuilder} from '../dto/PurchaseOptionsBuilder';
+import {SKProductDiscount} from '../dto/storeProducts/SKProductDiscount';
+import {PromotionalOffer} from '../dto/PromotionalOffer';
 
 const sdkVersion = "0.1.3";
 
@@ -55,6 +57,20 @@ export default class QonversionInternal implements QonversionApi {
     }
   }
 
+  async getPromotionalOffer(product: Product, discount: SKProductDiscount): Promise<PromotionalOffer | null> {
+    if (isAndroid()) {
+      return null;
+    }
+
+    const promoOffer = await QonversionNative.getPromotionalOffer({
+      productId: product.qonversionID,
+      discountId: discount.identifier,
+    });
+    const mappedPromoOffer: PromotionalOffer | null = Mapper.convertPromoOffer(promoOffer);
+
+    return mappedPromoOffer;
+  }
+
   async purchaseProduct(product: Product, options: PurchaseOptions | undefined): Promise<Map<string, Entitlement>> {
     try {
       if (!options) {
@@ -62,11 +78,20 @@ export default class QonversionInternal implements QonversionApi {
       }
 
       let purchasePromise: Promise<Record<string, QEntitlement> | null | undefined>;
+      const promoOffer = {
+        productDiscountId: options.promotionalOffer?.productDiscount.identifier,
+        keyIdentifier: options.promotionalOffer?.paymentDiscount.keyIdentifier,
+        nonce: options.promotionalOffer?.paymentDiscount.nonce,
+        signature: options.promotionalOffer?.paymentDiscount.signature,
+        timestamp: options.promotionalOffer?.paymentDiscount.timestamp
+      };
+
       if (isIos()) {
         purchasePromise = QonversionNative.purchase({
           productId: product.qonversionID,
           quantity: options.quantity,
-          contextKeys: options.contextKeys
+          contextKeys: options.contextKeys,
+          promoOffer: promoOffer
         });
       } else {
         purchasePromise = QonversionNative.purchase({
diff --git a/src/internal/web.ts b/src/internal/web.ts
index 84654e5..187f0c3 100644
--- a/src/internal/web.ts
+++ b/src/internal/web.ts
@@ -3,7 +3,7 @@ import {QonversionNativePlugin} from '../QonversionNativePlugin';
 import {
     QEntitlement,
     QOfferings,
-    QProduct,
+    QProduct, QPromotionalOffer,
     QRemoteConfig,
     QRemoteConfigList,
     QTrialIntroEligibility,
@@ -50,6 +50,10 @@ export class QonversionWeb extends WebPlugin implements QonversionNativePlugin {
         throw this.unimplemented("not implemented yet");
     }
 
+    getPromotionalOffer(params: { productId: string; discountId: string | undefined }): Promise<QPromotionalOffer> {
+        throw this.unimplemented("not implemented yet");
+    }
+
     identify(params: { userId: string }): Promise<QUser> {
         throw this.unimplemented("not implemented yet");
     }

From 793b7473429224589642a530a85fcf6ec1d91d79 Mon Sep 17 00:00:00 2001
From: Kamo Spertsyan <spertsiankamo@gmail.com>
Date: Fri, 22 Nov 2024 11:55:37 +0300
Subject: [PATCH 2/2] Fix sample

---
 example/src/js/index.js | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/example/src/js/index.js b/example/src/js/index.js
index 308653f..17f5366 100644
--- a/example/src/js/index.js
+++ b/example/src/js/index.js
@@ -64,9 +64,6 @@ window.getPromoOffer = async () => {
   try {
     const promoOffer = await Qonversion.getSharedInstance().getPromotionalOffer(product, discount);
     console.log('Qonversion getPromotionalOffer:', promoOffer);
-
-    const entitlements = await Qonversion.getSharedInstance().purchaseProduct(product, new PurchaseOptionsBuilder().setPromotionalOffer(promoOffer).build());
-    console.log('Entitlements: ', entitlements);
   } catch (e) {
     console.log('Qonversion getPromotionalOffer failed', e);
   }