purchase method

Implementation

Future<void> purchase(ProductCommon product) async {
  try {
    final iap = FlutterInappPurchase.instance;

    // 🎯 1. Handle In-App (one-time) products
    if (product.type == ProductType.InApp) {
      final requestProps = RequestPurchaseProps.inApp((
        ios: RequestPurchaseIosProps(sku: product.id),
        android: RequestPurchaseAndroidProps(
          skus: [product.id],
          obfuscatedAccountIdAndroid: "user_id", // optional
          obfuscatedProfileIdAndroid: "profile_id", // optional
        ),
        useAlternativeBilling: null,
      ));

      await iap.requestPurchase(requestProps);
      return;
    }

    // 💳 2. Handle Subscriptions
    if (product.type == ProductType.Subs) {
      if (Platform.isAndroid) {
        final offers = _getAndroidOffers(product);
        final requestProps = RequestPurchaseProps.subs((
          ios: null,
          android: RequestSubscriptionAndroidProps(
            skus: [product.id],
            subscriptionOffers: offers.isNotEmpty ? offers : null,
          ),
          useAlternativeBilling: null,
        ));

        await iap.requestPurchase(requestProps);
      } else if (Platform.isIOS) {
        final requestProps = RequestPurchaseProps.subs((
          ios: RequestSubscriptionIosProps(
            sku: product.id,
          ),
          android: null,
          useAlternativeBilling: null,
        ));

        await iap.requestPurchase(requestProps);
      }
    }
  } catch (e) {
    if (kDebugMode) {
      print("❌ Failed to purchase: $e");
    }
  }
}