Line data    Source code

       1             : // Copyright 2023 The terCAD team. All rights reserved.
       2             : // Use of this source code is governed by a CC BY-NC-ND 4.0 license that can be found in the LICENSE file.
       3             : 
       4             : import 'dart:async';
       5             : 
       6             : import 'package:in_app_purchase/in_app_purchase.dart';
       7             : 
       8             : class PurchaseController {
       9             :   static const pCoffee = 'fin_consumable_coffee';
      10             :   static const pDinner = 'fin_consumable_dinner';
      11             :   static const pInitial = 'fin_consumable_init';
      12             :   // static const pSubApple = 'fin_subscription_tiny'; Restricted without extended functionality
      13             :   // static const pSubGoogle = 'fin-subscription-tiny';
      14             : 
      15           0 :   static InAppPurchase iap = InAppPurchase.instance;
      16             :   late StreamSubscription<List<PurchaseDetails>> _subscription;
      17             :   Function? callback;
      18             : 
      19           0 :   PurchaseController([this.callback]) {
      20           0 :     final purchaseUpdated = iap.purchaseStream;
      21           0 :     _subscription = purchaseUpdated.listen(
      22           0 :       _onUpdate,
      23           0 :       onDone: dispose,
      24           0 :       onError: _onError,
      25             :     );
      26             :   }
      27             : 
      28           0 :   dispose() {
      29           0 :     _subscription.cancel();
      30             :   }
      31             : 
      32           0 :   void _onError(dynamic error) {
      33             :     // ... trace error
      34             :   }
      35             : 
      36           0 :   Future<void> _onUpdate(List<PurchaseDetails> purchaseDetailsList) async {
      37           0 :     for (var purchaseDetails in purchaseDetailsList) {
      38           0 :       if (purchaseDetails.pendingCompletePurchase) {
      39           0 :         await iap.completePurchase(purchaseDetails);
      40             :       }
      41             :     }
      42           0 :     if (callback != null) {
      43           0 :       callback!(purchaseDetailsList);
      44             :     }
      45             :   }
      46             : 
      47           0 :   Future<List<ProductDetails>> load() async {
      48           0 :     final available = await iap.isAvailable();
      49             :     if (!available) {
      50           0 :       return [];
      51             :     }
      52           0 :     final response = await iap.queryProductDetails(<String>{
      53           0 :       pCoffee,
      54           0 :       pDinner,
      55           0 :       pInitial,
      56             :       // pSubApple,
      57             :       // pSubGoogle,
      58             :     });
      59           0 :     iap.restorePurchases();
      60           0 :     return response.productDetails;
      61             :   }
      62             : 
      63           0 :   static Future<void> buy(ProductDetails product) async {
      64           0 :     final purchaseParam = PurchaseParam(productDetails: product);
      65           0 :     if (product.id.contains('subscription')) {
      66           0 :       await iap.buyNonConsumable(purchaseParam: purchaseParam);
      67             :     } else {
      68           0 :       await iap.buyConsumable(purchaseParam: purchaseParam);
      69             :     }
      70             :   }
      71             : }