//#if UNITY_ANDROID || UNITY_IPHONE || UNITY_STANDALONE_OSX || UNITY_TVOS
//// You must obfuscate your secrets using Window > Unity IAP > Receipt Validation Obfuscator
//// before receipt validation will compile in this sample.
//// #define RECEIPT_VALIDATION
//#endif
////#define DELAY_CONFIRMATION // Returns PurchaseProcessingResult.Pending from ProcessPurchase, then calls ConfirmPendingPurchase after a delay
////#define USE_PAYOUTS // Enables use of PayoutDefinitions to specify what the player should receive when a product is purchased
//using System;
//using System.Collections;
//using System.Collections.Generic;

//using UnityEngine;
//using UnityEngine.Purchasing;
//using UnityEngine.Store; // UnityChannel
//using UnityEngine.UI;
//#if RECEIPT_VALIDATION
//using UnityEngine.Purchasing.Security;
//#endif

///// <summary>
///// An example of Unity IAP functionality.
///// To use with your account, configure the product ids (AddProduct).
///// </summary>
//[AddComponentMenu("Unity IAP/Demo")]
//public class IAPDemo : MonoBehaviour, IStoreListener
//{
//    // Unity IAP objects
//    private IStoreController m_Controller;
//    private IAppleExtensions m_AppleExtensions;
//    private IMoolahExtension m_MoolahExtensions;
//    private ISamsungAppsExtensions m_SamsungExtensions;
//    private IMicrosoftExtensions m_MicrosoftExtensions;
//    private IUnityChannelExtensions m_UnityChannelExtensions;

//    #pragma warning disable 0414
//    private bool m_IsGooglePlayStoreSelected;
//    #pragma warning restore 0414
//    private bool m_IsSamsungAppsStoreSelected;
//    private bool m_IsCloudMoolahStoreSelected;
//    private bool m_IsUnityChannelSelected;

//    private string m_LastTransationID;
//    private string m_LastReceipt;
//    private string m_CloudMoolahUserName;
//    private bool m_IsLoggedIn = false;
//    private UnityChannelLoginHandler unityChannelLoginHandler; // Helper for interfacing with UnityChannel API
//    private bool m_FetchReceiptPayloadOnPurchase = false;

//    private int m_SelectedItemIndex = -1; // -1 == no product
//    private bool m_PurchaseInProgress;
//    private Selectable m_InteractableSelectable; // Optimization used for UI state management

//    #if RECEIPT_VALIDATION
//    private CrossPlatformValidator validator;
//    #endif

//    /// <summary>
//    /// This will be called when Unity IAP has finished initialising.
//    /// </summary>
//    public void OnInitialized(IStoreController controller, IExtensionProvider extensions)
//    {
//        m_Controller = controller;
//        m_AppleExtensions = extensions.GetExtension<IAppleExtensions> ();
//        m_SamsungExtensions = extensions.GetExtension<ISamsungAppsExtensions> ();
//        m_MoolahExtensions = extensions.GetExtension<IMoolahExtension> ();
//        m_MicrosoftExtensions = extensions.GetExtension<IMicrosoftExtensions> ();
//        m_UnityChannelExtensions = extensions.GetExtension<IUnityChannelExtensions> ();

//        InitUI(controller.products.all);

//        // On Apple platforms we need to handle deferred purchases caused by Apple's Ask to Buy feature.
//        // On non-Apple platforms this will have no effect; OnDeferred will never be called.
//        m_AppleExtensions.RegisterPurchaseDeferredListener(OnDeferred);

//        Debug.Log("Available items:");
//        foreach (var item in controller.products.all)
//        {
//            if (item.availableToPurchase)
//            {
//                Debug.Log(string.Join(" - ",
//                    new[]
//                    {
//                        item.metadata.localizedTitle,
//                        item.metadata.localizedDescription,
//                        item.metadata.isoCurrencyCode,
//                        item.metadata.localizedPrice.ToString(),
//                        item.metadata.localizedPriceString,
//                        item.transactionID,
//                        item.receipt
//                    }));
//            }
//        }

//        // Prepare model for purchasing
//        if (m_Controller.products.all.Length > 0)
//        {
//            m_SelectedItemIndex = 0;
//        }

//        // Populate the product menu now that we have Products
//        for (int t = 0; t < m_Controller.products.all.Length; t++)
//        {
//            var item = m_Controller.products.all[t];
//            var description = string.Format("{0} | {1} => {2}", item.metadata.localizedTitle, item.metadata.localizedPriceString, item.metadata.localizedPrice);

//            // NOTE: my options list is created in InitUI
//            GetDropdown().options[t] = new Dropdown.OptionData(description);
//        }

//        // Ensure I render the selected list element
//        GetDropdown().RefreshShownValue();

//        // Now that I have real products, begin showing product purchase history
//        UpdateHistoryUI();

//        LogProductDefinitions();
//    }

//    /// <summary>
//    /// This will be called when a purchase completes.
//    /// </summary>
//    public PurchaseProcessingResult ProcessPurchase(PurchaseEventArgs e)
//    {
//        Debug.Log("Purchase OK: " + e.purchasedProduct.definition.id);
//        Debug.Log("Receipt: " + e.purchasedProduct.receipt);

//        m_LastTransationID = e.purchasedProduct.transactionID;
//        m_LastReceipt = e.purchasedProduct.receipt;
//        m_PurchaseInProgress = false;

//        // Decode the UnityChannelPurchaseReceipt, extracting the gameOrderId
//        if (m_IsUnityChannelSelected)
//        {
//            var unifiedReceipt = JsonUtility.FromJson<UnifiedReceipt>(e.purchasedProduct.receipt);
//            if (unifiedReceipt != null && !string.IsNullOrEmpty(unifiedReceipt.Payload))
//            {
//                var purchaseReceipt = JsonUtility.FromJson<UnityChannelPurchaseReceipt>(unifiedReceipt.Payload);
//                Debug.LogFormat("UnityChannel receipt: storeSpecificId = {0}, transactionId = {1}, orderQueryToken = {2}",
//                    purchaseReceipt.storeSpecificId, purchaseReceipt.transactionId, purchaseReceipt.orderQueryToken);
//            }
//        }

//        #if RECEIPT_VALIDATION
//        // Local validation is available for GooglePlay, Apple, and UnityChannel stores
//        if (m_IsGooglePlayStoreSelected ||
//            (m_IsUnityChannelSelected && m_FetchReceiptPayloadOnPurchase) ||
//            Application.platform == RuntimePlatform.IPhonePlayer ||
//            Application.platform == RuntimePlatform.OSXPlayer ||
//            Application.platform == RuntimePlatform.tvOS) {
//            try {
//                var result = validator.Validate(e.purchasedProduct.receipt);
//                Debug.Log("Receipt is valid. Contents:");
//                foreach (IPurchaseReceipt productReceipt in result) {
//                    Debug.Log(productReceipt.productID);
//                    Debug.Log(productReceipt.purchaseDate);
//                    Debug.Log(productReceipt.transactionID);

//                    GooglePlayReceipt google = productReceipt as GooglePlayReceipt;
//                    if (null != google) {
//                        Debug.Log(google.purchaseState);
//                        Debug.Log(google.purchaseToken);
//                    }

//                    UnityChannelReceipt unityChannel = productReceipt as UnityChannelReceipt;
//                    if (null != unityChannel) {
//                        Debug.Log(unityChannel.productID);
//                        Debug.Log(unityChannel.purchaseDate);
//                        Debug.Log(unityChannel.transactionID);
//                    }

//                    AppleInAppPurchaseReceipt apple = productReceipt as AppleInAppPurchaseReceipt;
//                    if (null != apple) {
//                        Debug.Log(apple.originalTransactionIdentifier);
//                        Debug.Log(apple.subscriptionExpirationDate);
//                        Debug.Log(apple.cancellationDate);
//                        Debug.Log(apple.quantity);
//                    }

//                    // For improved security, consider comparing the signed
//                    // IPurchaseReceipt.productId, IPurchaseReceipt.transactionID, and other data
//                    // embedded in the signed receipt objects to the data which the game is using
//                    // to make this purchase.
//                }
//            } catch (IAPSecurityException ex) {
//                Debug.Log("Invalid receipt, not unlocking content. " + ex);
//                return PurchaseProcessingResult.Complete;
//            }
//        }
//        #endif

//        // Unlock content from purchases here.
//#if USE_PAYOUTS
//        if (e.purchasedProduct.definition.payouts != null) {
//            Debug.Log("Purchase complete, paying out based on defined payouts");
//            foreach (var payout in e.purchasedProduct.definition.payouts) {
//                Debug.Log(string.Format("Granting {0} {1} {2} {3}", payout.quantity, payout.typeString, payout.subtype, payout.data));
//            }
//        }
//#endif
//        // Indicate if we have handled this purchase.
//        //   PurchaseProcessingResult.Complete: ProcessPurchase will not be called
//        //     with this product again, until next purchase.
//        //   PurchaseProcessingResult.Pending: ProcessPurchase will be called
//        //     again with this product at next app launch. Later, call
//        //     m_Controller.ConfirmPendingPurchase(Product) to complete handling
//        //     this purchase. Use to transactionally save purchases to a cloud
//        //     game service.
//#if DELAY_CONFIRMATION
//        StartCoroutine(ConfirmPendingPurchaseAfterDelay(e.purchasedProduct));
//        return PurchaseProcessingResult.Pending;
//#else
//        UpdateHistoryUI();
//        return PurchaseProcessingResult.Complete;
//#endif
//    }

//#if DELAY_CONFIRMATION
//    private HashSet<string> m_PendingProducts = new HashSet<string>();

//    private IEnumerator ConfirmPendingPurchaseAfterDelay(Product p)
//    {
//        m_PendingProducts.Add(p.definition.id);
//        Debug.Log("Delaying confirmation of " + p.definition.id + " for 5 seconds.");
//        UpdateHistoryUI();

//        yield return new WaitForSeconds(5f);

//        Debug.Log("Confirming purchase of " + p.definition.id);
//        m_Controller.ConfirmPendingPurchase(p);
//        m_PendingProducts.Remove(p.definition.id);
//        UpdateHistoryUI();
//    }
//#endif

//    /// <summary>
//    /// This will be called is an attempted purchase fails.
//    /// </summary>
//    public void OnPurchaseFailed(Product item, PurchaseFailureReason r)
//    {
//        Debug.Log("Purchase failed: " + item.definition.id);
//        Debug.Log(r);

//        if (m_IsUnityChannelSelected)
//        {
//            var extra = m_UnityChannelExtensions.GetLastPurchaseError();
//            var purchaseError = JsonUtility.FromJson<UnityChannelPurchaseError>(extra);

//            if (purchaseError != null && purchaseError.purchaseInfo != null)
//            {
//                // Additional information about purchase failure.
//                var purchaseInfo = purchaseError.purchaseInfo;
//                Debug.LogFormat("UnityChannel purchaseInfo: productCode = {0}, gameOrderId = {1}, orderQueryToken = {2}",
//                    purchaseInfo.productCode, purchaseInfo.gameOrderId, purchaseInfo.orderQueryToken);
//            }

//            // Determine if the user already owns this item and that it can be added to
//            // their inventory, if not already present.
//#if UNITY_5_6_OR_NEWER 
//            if (r == PurchaseFailureReason.DuplicateTransaction) 
//            {
//                // Unlock `item` in inventory if not already present.
//                Debug.Log("Duplicate transaction detected, unlock this item");
//            }
//#else // Building using Unity strictly less than 5.6; e.g 5.3-5.5.
//            // In Unity 5.3 the enum PurchaseFailureReason.DuplicateTransaction 
//            // may not be available (is available in 5.6 ... specifically 
//            // 5.5.1p1+, 5.4.4p2+) and can be substituted with this call. 
//            if (r == PurchaseFailureReason.Unknown)
//            {
//                if (purchaseError != null && purchaseError.error != null && purchaseError.error.Equals("DuplicateTransaction"))
//                {
//                    // Unlock `item` in inventory if not already present.
//                    Debug.Log("Duplicate transaction detected, unlock this item");
//                }
//            }
//#endif
//        }

//        m_PurchaseInProgress = false;
//    }

//    public void OnInitializeFailed(InitializationFailureReason error)
//    {
//        Debug.Log("Billing failed to initialize!");
//        switch (error)
//        {
//            case InitializationFailureReason.AppNotKnown:
//                Debug.LogError("Is your App correctly uploaded on the relevant publisher console?");
//                break;
//            case InitializationFailureReason.PurchasingUnavailable:
//                // Ask the user if billing is disabled in device settings.
//                Debug.Log("Billing disabled!");
//                break;
//            case InitializationFailureReason.NoProductsAvailable:
//                // Developer configuration error; check product metadata.
//                Debug.Log("No products available for purchase!");
//                break;
//        }
//    }

//    [Serializable]
//    public class UnityChannelPurchaseError
//    {
//        public string error;
//        public UnityChannelPurchaseInfo purchaseInfo;
//    }

//    [Serializable]
//    public class UnityChannelPurchaseInfo
//    {
//        public string productCode; // Corresponds to storeSpecificId
//        public string gameOrderId; // Corresponds to transactionId
//        public string orderQueryToken;
//    }

//    public void Awake()
//    {
//        var module = StandardPurchasingModule.Instance();

//        // The FakeStore supports: no-ui (always succeeding), basic ui (purchase pass/fail), and
//        // developer ui (initialization, purchase, failure code setting). These correspond to
//        // the FakeStoreUIMode Enum values passed into StandardPurchasingModule.useFakeStoreUIMode.
//        module.useFakeStoreUIMode = FakeStoreUIMode.StandardUser;

//        var builder = ConfigurationBuilder.Instance(module);

//        // This enables the Microsoft IAP simulator for local testing.
//        // You would remove this before building your release package.
//        builder.Configure<IMicrosoftConfiguration>().useMockBillingSystem = true;
//        m_IsGooglePlayStoreSelected = Application.platform == RuntimePlatform.Android && module.appStore == AppStore.GooglePlay;

//        // CloudMoolah Configuration setings
//        // All games must set the configuration. the configuration need to apply on the CloudMoolah Portal.
//        // CloudMoolah APP Key
//        builder.Configure<IMoolahConfiguration>().appKey = "d93f4564c41d463ed3d3cd207594ee1b";
//        // CloudMoolah Hash Key
//        builder.Configure<IMoolahConfiguration>().hashKey = "cc";
//        // This enables the CloudMoolah test mode for local testing.
//        // You would remove this, or set to CloudMoolahMode.Production, before building your release package.
//        builder.Configure<IMoolahConfiguration>().SetMode(CloudMoolahMode.AlwaysSucceed);
//        // This records whether we are using Cloud Moolah IAP.
//        // Cloud Moolah requires logging in to access your Digital Wallet, so:
//        // A) IAPDemo (this) displays the Cloud Moolah GUI button for Cloud Moolah
//        m_IsCloudMoolahStoreSelected = Application.platform == RuntimePlatform.Android && module.appStore == AppStore.CloudMoolah;

//        // UnityChannel, provides access to Xiaomi MiPay.
//	    // Products are required to be set in the IAP Catalog window.  The file "MiProductCatalog.prop"
//        // is required to be generated into the project's
//        // Assets/Plugins/Android/assets folder, based off the contents of the
//        // IAP Catalog window, for MiPay.
//        m_IsUnityChannelSelected = Application.platform == RuntimePlatform.Android && module.appStore == AppStore.XiaomiMiPay;
//        // UnityChannel supports receipt validation through a backend fetch.
//        builder.Configure<IUnityChannelConfiguration>().fetchReceiptPayloadOnPurchase = m_FetchReceiptPayloadOnPurchase;

//	    // Define our products.
//	    // Either use the Unity IAP Catalog, or manually use the ConfigurationBuilder.AddProduct API.
//        // Use IDs from both the Unity IAP Catalog and hardcoded IDs via the ConfigurationBuilder.AddProduct API.

//        // Use the products defined in the IAP Catalog GUI.
//        // E.g. Menu: "Window" > "Unity IAP" > "IAP Catalog", then add products, then click "App Store Export".
//        var catalog = ProductCatalog.LoadDefaultCatalog();

//        foreach (var product in catalog.allProducts) {
//            if (product.allStoreIDs.Count > 0) {
//                var ids = new IDs();
//                foreach (var storeID in product.allStoreIDs) {
//                    ids.Add(storeID.id, storeID.store);
//                }
//                builder.AddProduct(product.id, product.type, ids);
//            } else {
//                builder.AddProduct(product.id, product.type);
//            }
//        }

//		// In this case our products have the same identifier across all the App stores,
//        // except on the Mac App store where product IDs cannot be reused across both Mac and
//        // iOS stores.
//        // So on the Mac App store our products have different identifiers,
//        // and we tell Unity IAP this by using the IDs class.
//        builder.AddProduct("100.gold.coins", ProductType.Consumable, new IDs
//        {
//            {"100.gold.coins.mac", MacAppStore.Name},
//            {"000000596586", TizenStore.Name},
//            {"com.ff", MoolahAppStore.Name},
//        }
//#if USE_PAYOUTS
//        , new PayoutDefinition(PayoutType.Currency, "gold", 100)
//#endif //USE_PAYOUTS
//        );

//        builder.AddProduct("500.gold.coins", ProductType.Consumable, new IDs
//        {
//            {"500.gold.coins.mac", MacAppStore.Name},
//            {"000000596581", TizenStore.Name},
//            {"com.ee", MoolahAppStore.Name},
//        }
//#if USE_PAYOUTS
//        , new PayoutDefinition(PayoutType.Currency, "gold", 500)
//#endif //USE_PAYOUTS
//        );

//        builder.AddProduct("sword", ProductType.NonConsumable, new IDs
//        {
//            {"sword.mac", MacAppStore.Name},
//            {"000000596583", TizenStore.Name},
//        }
//#if USE_PAYOUTS
//        , new List<PayoutDefinition> {
//            new PayoutDefinition(PayoutType.Item, "", 1, "item_id:76543"),
//            new PayoutDefinition(PayoutType.Currency, "gold", 50)
//        }
//#endif //USE_PAYOUTS
//        );

//        builder.AddProduct("subscription", ProductType.Subscription, new IDs
//        {
//            {"subscription.mac", MacAppStore.Name}
//        });

//        // Write Amazon's JSON description of our products to storage when using Amazon's local sandbox.
//        // This should be removed from a production build.
//        builder.Configure<IAmazonConfiguration>().WriteSandboxJSON(builder.products);

//        // This enables simulated purchase success for Samsung IAP.
//        // You would remove this, or set to SamsungAppsMode.Production, before building your release package.
//        builder.Configure<ISamsungAppsConfiguration>().SetMode(SamsungAppsMode.AlwaysSucceed);
//        // This records whether we are using Samsung IAP. Currently ISamsungAppsExtensions.RestoreTransactions
//        // displays a blocking Android Activity, so:
//        // A) Unity IAP does not automatically restore purchases on Samsung Galaxy Apps
//        // B) IAPDemo (this) displays the "Restore" GUI button for Samsung Galaxy Apps
//        m_IsSamsungAppsStoreSelected = Application.platform == RuntimePlatform.Android && module.appStore == AppStore.SamsungApps;


//        // This selects the GroupId that was created in the Tizen Store for this set of products
//        // An empty or non-matching GroupId here will result in no products available for purchase
//        builder.Configure<ITizenStoreConfiguration>().SetGroupId("100000085616");


//        #if RECEIPT_VALIDATION
//        string appIdentifier;
//        #if UNITY_5_6_OR_NEWER
//        appIdentifier = Application.identifier;
//        #else
//        appIdentifier = Application.bundleIdentifier;
//        #endif
//        validator = new CrossPlatformValidator(GooglePlayTangle.Data(), AppleTangle.Data(),
//            UnityChannelTangle.Data(), appIdentifier);
//        #endif

//        Action initializeUnityIap = () =>
//        {
//            // Now we're ready to initialize Unity IAP.
//            UnityPurchasing.Initialize(this, builder);
//        };

//        bool needExternalLogin = m_IsUnityChannelSelected;

//        if (!needExternalLogin)
//        {
//            initializeUnityIap();
//        }
//        else
//        {
//            // Call UnityChannel initialize and (later) login asynchronously

//	        // UnityChannel configuration settings. Required for Xiaomi MiPay.
//	        // Collect this app configuration from the Unity Developer website at
//	        // [2017-04-17 PENDING - Contact support representative]
//	        // https://developer.cloud.unity3d.com/ providing your Xiaomi MiPay App
//	        // ID, App Key, and App Secret. This permits Unity to proxy from the
//	        // user's device into the MiPay system.
//	        // IMPORTANT PRE-BUILD STEP: For mandatory Chinese Government app auditing
//	        // and for MiPay testing, enable debug mode (test mode)
//	        // using the `AppInfo.debug = true;` when initializing Unity Channel.

//            AppInfo unityChannelAppInfo = new AppInfo();
//            unityChannelAppInfo.appId     = "abc123appId";
//            unityChannelAppInfo.appKey    = "efg456appKey";
//            unityChannelAppInfo.clientId  = "hij789clientId";
//            unityChannelAppInfo.clientKey = "klm012clientKey";
//            unityChannelAppInfo.debug = false;

//            // Shared handler for Unity Channel initialization, here, and login, later
//            unityChannelLoginHandler = new UnityChannelLoginHandler();
//            unityChannelLoginHandler.initializeFailedAction = (string message) =>
//            {
//                Debug.LogError("Failed to initialize and login to UnityChannel: " + message);
//            };
//            unityChannelLoginHandler.initializeSucceededAction = () =>
//            {
//                initializeUnityIap();
//            };

//            StoreService.Initialize(unityChannelAppInfo, unityChannelLoginHandler);
//        }
//    }

//    // For handling initialization and login of UnityChannel, returning control to our store after.
//    class UnityChannelLoginHandler : ILoginListener
//    {
//        internal Action initializeSucceededAction;
//        internal Action<string> initializeFailedAction;
//        internal Action<UserInfo> loginSucceededAction;
//        internal Action<string> loginFailedAction;

//        public void OnInitialized()
//        {
//            initializeSucceededAction();
//        }

//        public void OnInitializeFailed(string message)
//        {
//            initializeFailedAction(message);
//        }

//        public void OnLogin(UserInfo userInfo)
//        {
//            loginSucceededAction(userInfo);
//        }

//        public void OnLoginFailed(string message)
//        {
//            loginFailedAction(message);
//        }
//    }

//    /// <summary>
//    /// This will be called after a call to IAppleExtensions.RestoreTransactions().
//    /// </summary>
//    private void OnTransactionsRestored(bool success)
//    {
//        Debug.Log("Transactions restored.");
//    }

//    /// <summary>
//    /// iOS Specific.
//    /// This is called as part of Apple's 'Ask to buy' functionality,
//    /// when a purchase is requested by a minor and referred to a parent
//    /// for approval.
//    ///
//    /// When the purchase is approved or rejected, the normal purchase events
//    /// will fire.
//    /// </summary>
//    /// <param name="item">Item.</param>
//    private void OnDeferred(Product item)
//    {
//        Debug.Log("Purchase deferred: " + item.definition.id);
//    }

//    private void InitUI(IEnumerable<Product> items)
//    {
//        // Disable the UI while IAP is initializing
//        // See also UpdateInteractable()
//        m_InteractableSelectable = GetDropdown(); // References any one of the disabled components

//        // Show Restore button on supported platforms
//        if (! (NeedRestoreButton()) )
//        {
//            GetRestoreButton().gameObject.SetActive(false);
//        }

//        // Show Register, Login, and Validate buttons on supported platform
//        GetRegisterButton().gameObject.SetActive(NeedRegisterButton());
//        GetLoginButton().gameObject.SetActive(NeedLoginButton());
//        GetValidateButton().gameObject.SetActive(NeedValidateButton());

//        foreach (var item in items)
//        {
//            // Add initial pre-IAP-initialization content. Update later in OnInitialized.
//            var description = string.Format("{0} - {1}", item.definition.id, item.definition.type);

//            GetDropdown().options.Add(new Dropdown.OptionData(description));
//        }

//        // Ensure I render the selected list element
//        GetDropdown().RefreshShownValue();

//        GetDropdown().onValueChanged.AddListener((int selectedItem) => {
//            Debug.Log("OnClickDropdown item " + selectedItem);
//            m_SelectedItemIndex = selectedItem;
//        });

//        // Initialize my button event handling
//        GetBuyButton().onClick.AddListener(() => {
//            if (m_PurchaseInProgress == true) {
//                Debug.Log("Please wait, purchasing ...");
//                return;
//            }

//            // For platforms needing Login, games utilizing a connected backend
//            // game server may wish to login.
//            // Standalone games may not need to login.
//            if (NeedLoginButton() && m_IsLoggedIn == false)
//            {
//                Debug.LogWarning("Purchase notifications will not be forwarded server-to-server. Login incomplete.");
//            }

//            // Don't need to draw our UI whilst a purchase is in progress.
//            // This is not a requirement for IAP Applications but makes the demo
//            // scene tidier whilst the fake purchase dialog is showing.
//            m_PurchaseInProgress = true;
//            m_Controller.InitiatePurchase(m_Controller.products.all[m_SelectedItemIndex], "aDemoDeveloperPayload");
//        });

//        if (GetRestoreButton() != null)
//        {
//            GetRestoreButton().onClick.AddListener(() => {
//                if (m_IsCloudMoolahStoreSelected)
//                {
//                    if (m_IsLoggedIn == false)
//                    {
//                        Debug.LogError("CloudMoolah purchase restoration aborted. Login incomplete.");
//                    }
//                    else
//                    {
//                        // Restore abnornal transaction identifer, if Client don't receive transaction identifer.
//                        m_MoolahExtensions.RestoreTransactionID((RestoreTransactionIDState restoreTransactionIDState) => {
//                            Debug.Log("restoreTransactionIDState = " + restoreTransactionIDState.ToString());
//                            bool success =
//                                restoreTransactionIDState != RestoreTransactionIDState.RestoreFailed &&
//                                restoreTransactionIDState != RestoreTransactionIDState.NotKnown;
//                            OnTransactionsRestored(success);
//                        });
//                    }
//                }
//                else if (m_IsSamsungAppsStoreSelected)
//                {
//                    m_SamsungExtensions.RestoreTransactions(OnTransactionsRestored);
//                }
//                else if (Application.platform == RuntimePlatform.WSAPlayerX86 ||
//                         Application.platform == RuntimePlatform.WSAPlayerX64 ||
//                         Application.platform == RuntimePlatform.WSAPlayerARM)
//                {
//                    m_MicrosoftExtensions.RestoreTransactions();
//                }
//                else
//                {
//                    m_AppleExtensions.RestoreTransactions(OnTransactionsRestored);
//                }
//            });
//        }

//        if (GetLoginButton() != null)
//        {
//            if (m_IsUnityChannelSelected)
//            {
//                GetLoginButton().onClick.AddListener(() =>
//                {
//                    unityChannelLoginHandler.loginSucceededAction = (UserInfo userInfo) =>
//                    {
//                        m_IsLoggedIn = true;
//                        Debug.LogFormat("Succeeded logging into UnityChannel. channel {0}, userId {1}, userLoginToken {2} ",
//                            userInfo.channel, userInfo.userId, userInfo.userLoginToken);
//                    };
//                    unityChannelLoginHandler.loginFailedAction = (string message) =>
//                    {
//                        m_IsLoggedIn = false;
//                        Debug.LogError("Failed logging into UnityChannel. " + message);
//                    };

//                    StoreService.Login(unityChannelLoginHandler);
//                });
//            }
//        }

//        // For local validation, see ProcessPurchase.
//        if (GetValidateButton() != null)
//        {
//            if (m_IsUnityChannelSelected)
//            {
//                GetValidateButton()
//                    .onClick.AddListener(() =>
//                    {
//                        string txId = m_LastTransationID;
//                        m_UnityChannelExtensions.ValidateReceipt(txId, (bool success, string signData, string signature) =>
//                        {
//                            Debug.LogFormat("ValidateReceipt transactionId {0}, success {1}, signData {2}, signature {3}",
//                                txId, success, signData, signature);

//                            // May use signData and signature results to validate server-to-server
//                        });
//                    });
//            }
//        }
//    }

//    public void UpdateHistoryUI()
//    {
//        if (m_Controller == null)
//        {
//            return;
//        }

//        var itemText = "Item\n\n";
//        var countText = "Purchased\n\n";

//        foreach (var item in m_Controller.products.all) {
//            // Collect history status report
//            itemText += "\n\n" + item.definition.id;
//            countText += "\n\n";
//#if DELAY_CONFIRMATION
//            if (m_PendingProducts.Contains(item.definition.id))
//                countText += "(Pending) ";
//#endif
//            countText += item.hasReceipt.ToString();
//        }

//        // Show history
//        GetText(false).text = itemText;
//        GetText(true).text = countText;
//    }

//    protected void UpdateInteractable()
//    {
//        if (m_InteractableSelectable == null)
//        {
//            return;
//        }

//        bool interactable = m_Controller != null;
//        if (interactable != m_InteractableSelectable.interactable)
//        {
//            if (GetRestoreButton() != null)
//            {
//                GetRestoreButton().interactable = interactable;
//            }
//            GetBuyButton().interactable = interactable;
//            GetDropdown().interactable = interactable;
//            GetRegisterButton().interactable = interactable;
//            GetLoginButton().interactable = interactable;
//        }
//    }

//    public void Update()
//    {
//        UpdateInteractable();
//    }

//    private bool NeedRestoreButton()
//    {
//        return Application.platform == RuntimePlatform.IPhonePlayer ||
//            Application.platform == RuntimePlatform.OSXPlayer ||
//            Application.platform == RuntimePlatform.tvOS ||
//            Application.platform == RuntimePlatform.WSAPlayerX86 ||
//            Application.platform == RuntimePlatform.WSAPlayerX64 ||
//            Application.platform == RuntimePlatform.WSAPlayerARM ||
//            m_IsSamsungAppsStoreSelected ||
//            m_IsCloudMoolahStoreSelected;
//    }

//    private bool NeedRegisterButton()
//    {
//        // Deprecated
//        return false;
//    }

//    private bool NeedLoginButton()
//    {
//        return m_IsUnityChannelSelected;
//    }

//    private bool NeedValidateButton()
//    {
//        return m_IsUnityChannelSelected;
//    }

//    private Text GetText(bool right)
//    {
//        var which = right ? "TextR" : "TextL";
//        return GameObject.Find(which).GetComponent<Text>();
//    }

//    private Dropdown GetDropdown()
//    {
//        return GameObject.Find("Dropdown").GetComponent<Dropdown>();
//    }

//    private Button GetBuyButton()
//    {
//        return GameObject.Find("Buy").GetComponent<Button>();
//    }

//    /// <summary>
//    /// Gets the restore button when available
//    /// </summary>
//    /// <returns><c>null</c> or the restore button.</returns>
//    private Button GetRestoreButton()
//    {
//        return GetButton ("Restore");
//    }

//    private Button GetRegisterButton()
//    {
//        return GetButton ("Register");
//    }

//    private Button GetLoginButton()
//    {
//        return GetButton ("Login");
//    }

//    private Button GetValidateButton()
//    {
//        return GetButton ("Validate");
//    }

//    private  Button GetButton(string buttonName)
//    {
//        GameObject obj = GameObject.Find(buttonName);
//        if (obj != null)
//        {
//            return obj.GetComponent <Button>();
//        }
//        else
//        {
//            return null;
//        }
//    }

//    private void LogProductDefinitions()
//    {
//        var products = m_Controller.products.all;
//        foreach (var product in products) {
//#if UNITY_5_6_OR_NEWER
//            Debug.Log(string.Format("id: {0}\nstore-specific id: {1}\ntype: {2}\nenabled: {3}\n", product.definition.id, product.definition.storeSpecificId, product.definition.type.ToString(), product.definition.enabled ? "enabled" : "disabled"));
//#else
//            Debug.Log(string.Format("id: {0}\nstore-specific id: {1}\ntype: {2}\n", product.definition.id, product.definition.storeSpecificId, product.definition.type.ToString()));
//#endif
//        }
//    }
//}