Add KMP + Unity winback code samples

code_blocks/subscription-guidance/subscription-offers/ios-winback-offers-fetch-eligible-winback-offers-kmp.kt

@@ -0,0 +1,9 @@
+Purchases.sharedInstance.getEligibleWinBackOffersForPackage(
+    packageToCheck = packageToCheck,
+    onError = { error: PurchasesError -> 
+        // TODO: handle the error in your UI
+    },
+    onSuccess = { eligibleWinBackOffers: List<WinBackOffer> ->
+        // TODO: display eligible win-back offers in your UI
+    }
+)

code_blocks/subscription-guidance/subscription-offers/ios-winback-offers-fetch-eligible-winback-offers-unity.cs

@@ -0,0 +1,11 @@
+Purchases purchases = GetComponent<Purchases>();
+purchases.GetEligibleWinBackOffersForPackage(package, (winBackOffers, error) => {
+    if (error != null)
+    {
+        // TODO: handle the error in your UI
+    }
+    else
+    {
+        // TODO: display eligible win-back offers in your UI
+    }
+});

code_blocks/subscription-guidance/subscription-offers/ios-winback-offers-purchase-winback-offer-kmp.kt

@@ -0,0 +1,10 @@
+Purchases.sharedInstance.purchase(
+    packageToPurchase = packageToPurchase,
+    winBackOffer = winBackOffer,
+    onError = { error: PurchasesError, userCancelled: Boolean -> 
+        // TODO: handle failed purchase in your UI
+    },
+    onSuccess = { transaction: StoreTransaction, customerInfo: CustomerInfo -> 
+        // TODO: handle successful purchase in your UI
+    }
+)

code_blocks/subscription-guidance/subscription-offers/ios-winback-offers-purchase-winback-offer-unity.cs

@@ -0,0 +1,15 @@
+Purchases purchases = GetComponent<Purchases>();
+purchases.PurchasePackageWithWinBackOffer(
+    package, 
+    winBackOffers[0],
+    (productIdentifier, customerInfo, userCancelled, purchaseError) =>
+    {
+        if (purchaseError != null)
+        {
+            // TODO: handle failed purchase in your UI
+            return;
+        }
+
+        // TODO: handle successful purchase in your UI
+    }
+);

docs/subscription-guidance/subscription-offers/ios-subscription-offers.mdx

@@ -341,6 +341,8 @@ import fetchEligibleWinbacksReactNative from "!!raw-loader!@site/code_blocks/sub
 import fetchEligibleWinbacksFlutter from "!!raw-loader!@site/code_blocks/subscription-guidance/subscription-offers/ios-winback-offers-fetch-eligible-winback-offers-flutter.dart";
 import fetchEligibleWinbacksCordova from "!!raw-loader!@site/code_blocks/subscription-guidance/subscription-offers/ios-winback-offers-fetch-eligible-winback-offers-cordova.js";
 import fetchEligibleWinBacksCapacitor from "!!raw-loader!@site/code_blocks/subscription-guidance/subscription-offers/ios-winback-offers-fetch-eligible-winback-offers-capacitor.ts";
+import fetchEligibleWinBacksKMP from "!!raw-loader!@site/code_blocks/subscription-guidance/subscription-offers/ios-winback-offers-fetch-eligible-winback-offers-kmp.kt";
+import fetchEligibleWinBacksUnity from "!!raw-loader!@site/code_blocks/subscription-guidance/subscription-offers/ios-winback-offers-fetch-eligible-winback-offers-unity.cs";
 
 <RCCodeBlock
   tabs={[
@@ -365,12 +367,21 @@ import fetchEligibleWinBacksCapacitor from "!!raw-loader!@site/code_blocks/subsc
       content: fetchEligibleWinbacksCordova,
     },
     {
-      type: "capacitor",
-      title: "Capacitor",
-      content: fetchEligibleWinBacksCapacitor,
+        type: 'capacitor',
+        title: "Capacitor",
+        content: fetchEligibleWinBacksCapacitor,
     },
-  ]}
-/>
+    {
+        type: 'kotlin',
+        title: "Kotlin Multiplatform",
+        content: fetchEligibleWinBacksKMP,
+    },
+    {
+        type: 'unity',
+        title: "Unity",
+        content: fetchEligibleWinBacksUnity,
+    }
+]}/>
 
 :::info ☝️
 Note: The `eligibleWinBackOffers` function only returns the win-back offers that the current subscriber is eligible for, not all of the win-back offers that you've created for a product. It will return an empty array when the subscriber is not eligible for any win-back offers.
@@ -383,6 +394,8 @@ import purchaseWinbackOfferReactNative from "!!raw-loader!@site/code_blocks/subs
 import purchaseWinbackOfferFlutter from "!!raw-loader!@site/code_blocks/subscription-guidance/subscription-offers/ios-winback-offers-purchase-winback-offer-flutter.dart";
 import purchaseWinbackOfferCordova from "!!raw-loader!@site/code_blocks/subscription-guidance/subscription-offers/ios-winback-offers-purchase-winback-offer-cordova.js";
 import purchaseWinbackOfferCapacitor from "!!raw-loader!@site/code_blocks/subscription-guidance/subscription-offers/ios-winback-offers-purchase-winback-offer-capacitor.ts";
+import purchaseWinbackOfferKMP from "!!raw-loader!@site/code_blocks/subscription-guidance/subscription-offers/ios-winback-offers-purchase-winback-offer-kmp.kt";
+import purchaseWinbackOfferUnity from "!!raw-loader!@site/code_blocks/subscription-guidance/subscription-offers/ios-winback-offers-purchase-winback-offer-unity.cs";
 
 <RCCodeBlock
   tabs={[
@@ -407,12 +420,21 @@ import purchaseWinbackOfferCapacitor from "!!raw-loader!@site/code_blocks/subscr
       content: purchaseWinbackOfferCordova,
     },
     {
-      type: "capacitor",
-      title: "Capacitor",
-      content: purchaseWinbackOfferCapacitor,
+        type: 'capacitor',
+        title: "Capacitor",
+        content: purchaseWinbackOfferCapacitor,
     },
-  ]}
-/>
+    {
+        type: 'kotlin',
+        title: "Kotlin Multiplatform",
+        content: purchaseWinbackOfferKMP,
+    },
+    {
+        type: 'unity',
+        title: "Unity",
+        content: purchaseWinbackOfferUnity,
+    }
+]}/>
 
 For more information on displaying and purchasing products on your paywall, check out our [Displaying Products](https://www.revenuecat.com/docs/getting-started/displaying-products) and [Making Purchases](https://www.revenuecat.com/docs/getting-started/making-purchases) guides.