Merge pull request #576 from qonversion/feature/acknowledgeFix

Updated logic to fix rare cases for acknowledging purchases issue

sdk/src/main/java/com/qonversion/android/sdk/internal/QProductCenterManager.kt

@@ -89,6 +89,8 @@ internal class QProductCenterManager internal constructor(
     private var advertisingID: String? = null
     private var pendingInitRequestData: InitRequestData? = null
 
+    private var processingPurchases: List<Purchase> = emptyList()
+
     private var converter: PurchaseConverter = GooglePurchaseConverter()
 
     @Volatile
@@ -616,6 +618,8 @@ internal class QProductCenterManager internal constructor(
             val completedPurchases =
                 purchases.filter { it.purchaseState == Purchase.PurchaseState.PURCHASED }
 
+            processingPurchases = completedPurchases
+
             val purchasesInfo = converter.convertPurchases(completedPurchases)
 
             val handledPurchasesCallback =
@@ -658,6 +662,13 @@ internal class QProductCenterManager internal constructor(
 
                 loadStoreProductsIfPossible()
 
+                if (processingPurchases.isNotEmpty()) {
+                    handledPurchasesCache.saveHandledPurchases(processingPurchases)
+
+                    billingService.consumePurchases(processingPurchases.toList())
+                    processingPurchases = emptyList()
+                }
+
                 handleCachedPurchases()
 
                 callback?.onSuccess(launchResult)